/* === GoCognigo — Dark Mode Design System === */

:root {
    --bg-primary: #06060a;
    --bg-secondary: #0d0d14;
    --bg-card: rgba(15, 15, 25, 0.75);
    --bg-card-hover: rgba(20, 20, 35, 0.85);
    --bg-input: rgba(12, 12, 20, 0.9);
    --border: rgba(255, 255, 255, 0.06);
    --border-focus: rgba(168, 85, 247, 0.4);
    --text-primary: #f0f0f5;
    --text-secondary: #8888a0;
    --text-muted: #55556a;
    --accent-purple: #a855f7;
    --accent-cyan: #06b6d4;
    --accent-gradient: linear-gradient(135deg, #a855f7, #06b6d4);
    --accent-gradient-subtle: linear-gradient(135deg, rgba(168, 85, 247, 0.15), rgba(6, 182, 212, 0.15));
    --success: #22c55e;
    --warning: #f59e0b;
    --danger: #ef4444;
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --shadow-glow: 0 0 40px rgba(168, 85, 247, 0.08);
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --sidebar-width: 260px;
}

/* Light theme overrides */
[data-theme="light"] {
    --bg-primary: #f8f9fb;
    --bg-secondary: #ffffff;
    --bg-card: rgba(255, 255, 255, 0.85);
    --bg-card-hover: rgba(245, 245, 250, 0.95);
    --bg-input: rgba(245, 245, 250, 0.95);
    --border: rgba(0, 0, 0, 0.08);
    --border-focus: rgba(168, 85, 247, 0.5);
    --text-primary: #1a1a2e;
    --text-secondary: #555570;
    --text-muted: #8888a0;
    --accent-gradient-subtle: linear-gradient(135deg, rgba(168, 85, 247, 0.08), rgba(6, 182, 212, 0.08));
    --shadow-glow: 0 0 40px rgba(168, 85, 247, 0.05);
}

[data-theme="light"] .ambient-bg {
    opacity: 0.3;
}

[data-theme="light"] .sidebar {
    background: rgba(255, 255, 255, 0.9);
}

[data-theme="light"] .header {
    background: rgba(255, 255, 255, 0.9);
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

[data-theme="light"] .stats-bar {
    background: rgba(245, 245, 250, 0.9);
    border-color: rgba(0, 0, 0, 0.08);
}

[data-theme="light"] .settings-btn {
    background: rgba(245, 245, 250, 0.9);
    border-color: rgba(0, 0, 0, 0.1);
    color: #555;
}

[data-theme="light"] .settings-btn:hover {
    background: rgba(235, 235, 245, 0.95);
    color: #333;
}

[data-theme="light"] .settings-dropdown {
    background: rgba(255, 255, 255, 0.97);
    border-color: rgba(0, 0, 0, 0.1);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.12);
}

[data-theme="light"] .settings-select {
    background: #f5f5fa;
    border-color: rgba(0, 0, 0, 0.1);
    color: #1a1a2e;
}

[data-theme="light"] .settings-select option {
    background: #fff;
    color: #1a1a2e;
}

[data-theme="light"] .settings-input {
    background: #f5f5fa;
    border-color: rgba(0, 0, 0, 0.1);
    color: #1a1a2e;
}

[data-theme="light"] .settings-input:-webkit-autofill,
[data-theme="light"] .settings-input:-webkit-autofill:hover,
[data-theme="light"] .settings-input:-webkit-autofill:focus {
    -webkit-box-shadow: 0 0 0 30px #f5f5fa inset !important;
    -webkit-text-fill-color: #1a1a2e !important;
    border: 1px solid rgba(0, 0, 0, 0.1) !important;
}

[data-theme="light"] .validate-btn {
    background: rgba(168, 85, 247, 0.08);
    border-color: rgba(168, 85, 247, 0.3);
    color: #7c3aed;
}

[data-theme="light"] .msg-answer-text code {
    color: #7c3aed;
    background: rgba(124, 58, 237, 0.08);
}

[data-theme="light"] .msg-answer-text pre {
    background: #f0f0f5;
}

[data-theme="light"] .msg-answer-text pre code {
    color: #333;
}

[data-theme="light"] .search-result-text mark {
    background: rgba(250, 204, 21, 0.35);
    color: #92400e;
}

[data-theme="light"] .conv-item.active {
    background: rgba(168, 85, 247, 0.08);
}

/* Theme toggle button */
.theme-toggle-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border-radius: 50%;
    border: 1px solid var(--border);
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
}

.theme-toggle-btn:hover {
    color: var(--accent-purple);
    border-color: var(--border-focus);
    background: rgba(168, 85, 247, 0.08);
}

/* Dark mode: show moon, hide sun */
.theme-icon-sun {
    display: none;
}

.theme-icon-moon {
    display: block;
}

/* Light mode: show sun, hide moon */
[data-theme="light"] .theme-icon-sun {
    display: block;
}

[data-theme="light"] .theme-icon-moon {
    display: none;
}

[data-theme="light"] .theme-toggle-btn {
    border-color: rgba(0, 0, 0, 0.12);
    color: #555;
}

[data-theme="light"] .theme-toggle-btn:hover {
    color: #7c3aed;
    border-color: rgba(124, 58, 237, 0.4);
    background: rgba(124, 58, 237, 0.06);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 15px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

/* === Ambient Background === */
.ambient-bg {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    overflow: hidden;
}

.orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.3;
    animation: drift 20s ease-in-out infinite alternate;
}

.orb-1 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, #a855f7 0%, transparent 70%);
    top: -10%;
    left: -5%;
    animation-delay: 0s;
}

.orb-2 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, #06b6d4 0%, transparent 70%);
    bottom: -10%;
    right: -5%;
    animation-delay: -7s;
}

.orb-3 {
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, #7c3aed 0%, transparent 70%);
    top: 40%;
    left: 50%;
    animation-delay: -14s;
    opacity: 0.15;
}

@keyframes drift {
    0% {
        transform: translate(0, 0) scale(1);
    }

    100% {
        transform: translate(40px, -30px) scale(1.1);
    }
}

/* === Header === */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.8rem 2rem;
    background: rgba(6, 6, 10, 0.8);
    backdrop-filter: blur(20px) saturate(1.5);
    border-bottom: 1px solid var(--border);
}

.header-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.header-right {
    display: flex;
    align-items: center;
}

.sidebar-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.4rem;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.sidebar-toggle:hover {
    color: var(--text-primary);
    background: var(--bg-card);
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon {
    flex-shrink: 0;
}

.logo-text h1 {
    font-size: 1.3rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-subtitle {
    font-size: 0.7rem;
    color: var(--text-muted);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    font-weight: 500;
}

/* Stats */
.stats-bar {
    display: flex;
    align-items: center;
    gap: 1.2rem;
    padding: 0.5rem 1.2rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(10px);
}

.stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
}

.stat-value {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
}

.stat-label {
    font-size: 0.6rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.stat-divider {
    width: 1px;
    height: 28px;
    background: var(--border);
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 6px;
}

.pulse {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--success);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
        transform: scale(1);
    }

    50% {
        opacity: 0.5;
        transform: scale(0.8);
    }
}

/* === App Layout === */
.app-layout {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: var(--sidebar-width) 1fr;
    min-height: calc(100vh - 60px);
}

/* === Sidebar === */
.sidebar {
    position: sticky;
    top: 60px;
    height: calc(100vh - 60px);
    display: flex;
    flex-direction: column;
    background: rgba(10, 10, 18, 0.85);
    backdrop-filter: blur(16px);
    border-right: 1px solid var(--border);
    overflow: hidden;
    transition: transform 0.3s ease;
}

.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.2rem 1rem 0.8rem;
    border-bottom: 1px solid var(--border);
}

.sidebar-title {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
    font-weight: 600;
}

.new-chat-btn {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 0.4rem 0.7rem;
    background: var(--accent-gradient-subtle);
    border: 1px solid var(--border-focus);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.72rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.new-chat-btn:hover {
    background: var(--accent-gradient);
    color: white;
    transform: translateY(-1px);
}

.sidebar-list {
    flex: 1;
    overflow-y: auto;
    padding: 0.5rem;
}

.sidebar-list::-webkit-scrollbar {
    width: 4px;
}

.sidebar-list::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 2px;
}

/* Sidebar Tools (pinned to bottom) */
.sidebar-tools {
    border-top: 1px solid var(--border);
    flex-shrink: 0;
}

.sidebar-tools-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.6rem 1rem;
    cursor: pointer;
    transition: var(--transition);
}

.sidebar-tools-header:hover {
    background: rgba(255, 255, 255, 0.03);
}

.sidebar-tools-title {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.68rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    font-weight: 600;
}

.sidebar-tools-chevron {
    color: var(--text-muted);
    transition: transform 0.2s ease;
    transform: rotate(-90deg);
}

.sidebar-tools-chevron.open {
    transform: rotate(0deg);
}

.sidebar-tools-list {
    padding: 0 0.5rem 0.5rem;
}

.sidebar-tool-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.45rem 0.6rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
}

.sidebar-tool-item:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
}

.sidebar-tool-item.active {
    background: var(--accent-gradient-subtle);
    color: var(--text-primary);
    border: 1px solid var(--border-focus);
}

.chat-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.7rem 0.8rem;
    margin-bottom: 2px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid transparent;
}

.chat-item:hover {
    background: var(--bg-card-hover);
    border-color: var(--border);
}

.chat-item.active {
    background: var(--accent-gradient-subtle);
    border-color: var(--border-focus);
}

.chat-item-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
    flex: 1;
}

.chat-item-name {
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.chat-item-meta {
    font-size: 0.65rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
}

.chat-item-status {
    display: inline-block;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    margin-right: 4px;
    flex-shrink: 0;
}

.chat-item-status.upload {
    background: var(--warning);
}

.chat-item-status.processing {
    background: var(--accent-cyan);
    animation: pulse 1.5s infinite;
}

.chat-item-status.ready {
    background: var(--success);
}

.chat-item-delete {
    opacity: 0;
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    transition: var(--transition);
    flex-shrink: 0;
}

.chat-item:hover .chat-item-delete {
    opacity: 1;
}

.chat-item-delete:hover {
    color: var(--danger);
    background: rgba(239, 68, 68, 0.1);
}

.sidebar-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem 1rem;
    color: var(--text-muted);
    font-size: 0.8rem;
    text-align: center;
    gap: 0.5rem;
}

/* Rename input inline */
.chat-item-rename-input {
    width: 100%;
    background: var(--bg-input);
    border: 1px solid var(--border-focus);
    border-radius: 4px;
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.82rem;
    font-weight: 500;
    padding: 0.2rem 0.4rem;
    outline: none;
}

.chat-item-rename {
    opacity: 0;
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    transition: var(--transition);
    flex-shrink: 0;
}

.chat-item:hover .chat-item-rename {
    opacity: 1;
}

.chat-item-rename:hover {
    color: var(--accent-cyan);
    background: rgba(6, 182, 212, 0.1);
}

/* Project items in sidebar */
.project-item {
    margin-bottom: 2px;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    transition: var(--transition);
}

.project-item.active {
    background: var(--accent-gradient-subtle);
    border-color: var(--border-focus);
}

.project-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.6rem 0.7rem;
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.project-header:hover {
    background: var(--bg-card-hover);
}

.project-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
    flex: 1;
}

.project-name {
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    display: flex;
    align-items: center;
    gap: 4px;
}

.project-actions {
    display: flex;
    gap: 2px;
    flex-shrink: 0;
}

.project-item:hover .project-actions .chat-item-rename,
.project-item:hover .project-actions .chat-item-delete {
    opacity: 1;
}

/* Conversation sub-list nested under active project */
.conv-list {
    padding: 0.15rem 0 0.3rem 1.2rem;
    border-left: 2px solid var(--border);
    margin-left: 1.1rem;
    margin-bottom: 0.3rem;
}

.conv-item {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 0.35rem 0.6rem;
    margin-bottom: 1px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.75rem;
    color: var(--text-secondary);
    transition: var(--transition);
}

.conv-item:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
}

.conv-item.active {
    color: var(--accent-cyan);
    font-weight: 600;
    background: rgba(6, 182, 212, 0.08);
}

.conv-name {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    flex: 1;
}

.conv-delete {
    opacity: 0;
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 0.9rem;
    padding: 0 4px;
    line-height: 1;
    transition: var(--transition);
}

.conv-item:hover .conv-delete {
    opacity: 1;
}

.conv-delete:hover {
    color: var(--danger);
}

.conv-item.conv-new {
    color: var(--text-muted);
    font-size: 0.7rem;
    margin-top: 2px;
}

.conv-item.conv-new:hover {
    color: var(--accent-cyan);
}

/* Indexed files panel in chat phase */
.indexed-files-panel {
    margin-bottom: 1rem;
}

.indexed-files-toggle {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    width: 100%;
    padding: 0.6rem 0.8rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-family: var(--font-sans);
    font-size: 0.78rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.indexed-files-toggle:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
    border-color: rgba(255, 255, 255, 0.1);
}

.toggle-chevron {
    margin-left: auto;
    transition: transform 0.2s ease;
}

.indexed-files-panel.open .toggle-chevron {
    transform: rotate(180deg);
}

.indexed-files-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    padding: 0.6rem 0.4rem 0;
}

.indexed-file-tag {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 0.3rem 0.65rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 100px;
    font-size: 0.7rem;
    font-weight: 500;
    color: var(--text-secondary);
    font-family: var(--font-mono);
    position: relative;
    transition: var(--transition);
}

.indexed-file-tag:hover {
    border-color: rgba(239, 68, 68, 0.3);
}

.indexed-file-tag.viewable {
    cursor: pointer;
}

.indexed-file-tag.viewable:hover {
    border-color: rgba(168, 85, 247, 0.4);
    background: rgba(168, 85, 247, 0.06);
}

.indexed-file-view {
    font-size: 0.7rem;
    opacity: 0;
    transition: opacity 0.2s ease;
    margin-left: 2px;
}

.indexed-file-tag.viewable:hover .indexed-file-view {
    opacity: 0.7;
}

.indexed-file-delete {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 0.85rem;
    line-height: 1;
    padding: 0 2px;
    margin-left: 2px;
    opacity: 0;
    transition: var(--transition);
}

.indexed-file-tag:hover .indexed-file-delete {
    opacity: 1;
}

.indexed-file-delete:hover {
    color: var(--danger);
}

.indexed-file-tag .file-ext {
    font-size: 0.6rem;
    font-weight: 700;
    text-transform: uppercase;
    padding: 1px 4px;
    border-radius: 3px;
}

.indexed-file-tag .file-ext.pdf {
    background: rgba(239, 68, 68, 0.15);
    color: #ef4444;
}

.indexed-file-tag .file-ext.docx {
    background: rgba(59, 130, 246, 0.15);
    color: #3b82f6;
}

/* === Main === */
.main {
    max-width: 900px;
    margin: 0 auto;
    padding: 2rem 1.5rem 4rem;
    width: 100%;
}

.hidden {
    display: none !important;
}

/* === Phase Header === */
.phase-header {
    margin-bottom: 1.5rem;
}

.phase-title {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 0.3rem;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.phase-title svg {
    flex-shrink: 0;
    stroke: var(--accent-purple);
}

.phase-desc {
    font-size: 0.88rem;
    color: var(--text-secondary);
    padding-left: 2.3rem;
}

/* === Upload Zone === */
.upload-zone {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 3rem 2rem;
    border: 2px dashed rgba(168, 85, 247, 0.25);
    border-radius: var(--radius-lg);
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    cursor: pointer;
    transition: var(--transition);
    margin-bottom: 1rem;
}

.upload-zone:hover,
.upload-zone.drag-over {
    border-color: var(--accent-purple);
    background: var(--accent-gradient-subtle);
    box-shadow: var(--shadow-glow);
}

.upload-zone.drag-over {
    transform: scale(1.01);
}

.upload-icon {
    margin-bottom: 1rem;
    color: var(--accent-purple);
    opacity: 0.7;
}

.upload-text {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 0.4rem;
}

.upload-browse {
    color: var(--accent-purple);
    cursor: pointer;
    font-weight: 600;
    text-decoration: underline;
    text-underline-offset: 3px;
}

.upload-browse:hover {
    color: var(--accent-cyan);
}

.upload-hint {
    font-size: 0.72rem;
    color: var(--text-muted);
}

/* === File list === */
.file-list {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    margin-bottom: 1rem;
}

.file-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.7rem 1rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    animation: fadeIn 0.3s ease;
    position: relative;
    overflow: hidden;
}

.file-icon {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    font-family: var(--font-mono);
    flex-shrink: 0;
}

.file-icon.pdf {
    background: rgba(239, 68, 68, 0.15);
    color: #ef4444;
}

.file-icon.docx {
    background: rgba(59, 130, 246, 0.15);
    color: #3b82f6;
}

.file-name {
    flex: 1;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.file-size {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--text-muted);
    flex-shrink: 0;
}

.file-status {
    font-size: 0.72rem;
    color: var(--success);
    font-weight: 600;
}

.file-status.uploading {
    color: var(--accent-cyan);
    animation: pulse 1.2s infinite;
}

.file-status.error {
    color: var(--danger);
}

/* Upload progress bar — thin bar at bottom of .file-item */
.file-progress-bar {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: rgba(255, 255, 255, 0.05);
}

.file-progress-fill {
    height: 100%;
    width: 0%;
    background: var(--accent-gradient);
    border-radius: 2px;
    transition: width 0.25s ease;
}

.file-remove {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px 6px;
    border-radius: 4px;
    transition: var(--transition);
    flex-shrink: 0;
    font-size: 0.9rem;
    line-height: 1;
    opacity: 0.6;
}

.file-remove:hover {
    color: var(--danger);
    background: rgba(239, 68, 68, 0.12);
    opacity: 1;
}

/* === Empty State === */
.empty-state-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 50vh;
    text-align: center;
    padding: 3rem 2rem;
}

.empty-state-icon {
    margin-bottom: 1.5rem;
    color: var(--accent-purple);
    opacity: 0.5;
}

.empty-state-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.empty-state-desc {
    font-size: 0.92rem;
    color: var(--text-secondary);
    max-width: 400px;
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

/* === Process Button === */
.process-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    width: 100%;
    padding: 1rem;
    background: var(--accent-gradient);
    border: none;
    border-radius: var(--radius-md);
    color: white;
    font-family: var(--font-sans);
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    letter-spacing: 0.02em;
}

.process-btn:hover {
    transform: translateY(-2px);
    filter: brightness(1.1);
    box-shadow: 0 12px 40px rgba(168, 85, 247, 0.3);
}

.process-btn:active {
    transform: translateY(0);
}

/* === Processing Phase === */
.processing-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    backdrop-filter: blur(10px);
    text-align: center;
}

.processing-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 0.8rem;
}

.processing-spinner {
    width: 28px;
    height: 28px;
    border: 3px solid var(--border);
    border-top-color: var(--accent-purple);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.processing-title {
    font-size: 1.2rem;
    font-weight: 700;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.processing-phase {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.processing-progress {
    max-width: 400px;
    margin: 0 auto;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 0.8rem;
}

.progress-fill {
    height: 100%;
    width: 0%;
    background: var(--accent-gradient);
    border-radius: 4px;
    transition: width 0.5s ease;
    position: relative;
}

.progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
    0% {
        transform: translateX(-100%);
    }

    100% {
        transform: translateX(100%);
    }
}

.progress-stats {
    display: flex;
    justify-content: space-between;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--text-muted);
}

/* === Chat Actions === */
.chat-actions {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.chat-action-btn {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.45rem 0.8rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-family: var(--font-sans);
    font-size: 0.75rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.chat-action-btn:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
    border-color: rgba(255, 255, 255, 0.1);
}

.chat-action-btn.danger:hover {
    color: var(--danger);
    border-color: rgba(239, 68, 68, 0.3);
    background: rgba(239, 68, 68, 0.08);
}

/* === Controls row === */
.controls-row {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    gap: 1rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

/* Stats bar inside controls-row floats to the right */
.controls-row .stats-bar {
    margin-left: auto;
    align-self: center;
}

/* Provider Toggle */
.provider-toggle {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.provider-label {
    font-size: 0.6rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
    font-weight: 600;
}

.provider-buttons {
    display: flex;
    gap: 0.35rem;
}

.provider-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 0.5rem 0.85rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-family: var(--font-sans);
    font-size: 0.78rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.provider-btn:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
    border-color: rgba(255, 255, 255, 0.12);
}

.provider-btn.active {
    background: var(--accent-gradient-subtle);
    border-color: var(--border-focus);
    color: var(--text-primary);
    font-weight: 600;
}

.provider-btn.unavailable {
    opacity: 0.35;
    cursor: not-allowed;
}

.provider-btn.unavailable:hover {
    background: var(--bg-card);
    color: var(--text-secondary);
    border-color: var(--border);
}

.provider-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
}

/* Model selector dropdown */
.model-selector-wrap {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.model-select {
    appearance: none;
    -webkit-appearance: none;
    padding: 0.5rem 2rem 0.5rem 0.85rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.78rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23999' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.6rem center;
    min-width: 140px;
}

.model-select:hover {
    background-color: var(--bg-card-hover);
    border-color: rgba(255, 255, 255, 0.12);
}

.model-select:focus {
    outline: none;
    border-color: var(--border-focus);
    box-shadow: var(--shadow-glow);
}

.model-select option {
    background: #1a1a2e;
    color: var(--text-primary);
    padding: 0.5rem;
}

/* Mode selector */
.mode-selector {
    display: flex;
    gap: 0.5rem;
}

.mode-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-family: var(--font-sans);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.mode-btn:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
    border-color: rgba(255, 255, 255, 0.1);
}

.mode-btn.active {
    background: var(--accent-gradient-subtle);
    border-color: var(--border-focus);
    color: var(--text-primary);
}

/* Panels */
.panel {
    margin-bottom: 1.5rem;
}

/* Query input */
.query-input-wrap {
    position: relative;
    display: flex;
    align-items: flex-end;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 0.75rem;
    transition: var(--transition);
}

.query-input-wrap:focus-within {
    border-color: var(--border-focus);
    box-shadow: var(--shadow-glow);
}

#queryInput {
    flex: 1;
    background: none;
    border: none;
    outline: none;
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    line-height: 1.5;
    resize: none;
    padding: 0.3rem 0.5rem;
}

#queryInput::placeholder {
    color: var(--text-muted);
}

.submit-btn {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-gradient);
    border: none;
    border-radius: var(--radius-sm);
    color: white;
    cursor: pointer;
    transition: var(--transition);
}

.submit-btn:hover {
    transform: scale(1.05);
    filter: brightness(1.1);
}

.submit-btn:active {
    transform: scale(0.97);
}

/* Batch controls */
.batch-controls {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.run-batch-btn {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.85rem 1.8rem;
    background: var(--accent-gradient);
    border: none;
    border-radius: var(--radius-md);
    color: white;
    font-family: var(--font-sans);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.run-batch-btn:hover {
    transform: translateY(-1px);
    filter: brightness(1.1);
    box-shadow: 0 8px 30px rgba(168, 85, 247, 0.25);
}

.run-batch-btn:active {
    transform: translateY(0);
}

.run-batch-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
    filter: none;
}

.batch-timer {
    flex: 1;
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: 0.4rem;
}

.timer-value {
    font-family: var(--font-mono);
    font-size: 1.6rem;
    font-weight: 700;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.timer-label {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.timer-bar {
    width: 100%;
    height: 4px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 2px;
    overflow: hidden;
}

.timer-fill {
    height: 100%;
    width: 0%;
    background: var(--accent-gradient);
    border-radius: 2px;
    transition: width 0.1s linear;
}

.stop-icon {
    display: none;
}

/* Submit button — loading state (spinner replaces send icon) */
.submit-btn.loading {
    background: var(--bg-card);
    border: 1px solid var(--border);
    cursor: default;
    pointer-events: auto;
}

.submit-btn.loading .send-icon {
    display: none;
}

.submit-btn.loading .stop-icon {
    display: none;
}

.submit-btn.loading::after {
    content: '';
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.15);
    border-top-color: var(--accent-purple);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* Hover on loading button → show stop icon instead of spinner */
.submit-btn.loading:hover {
    background: var(--bg-card);
    border-color: var(--text-muted);
    cursor: pointer;
}

.submit-btn.loading:hover::after {
    content: none;
    display: none;
}

.submit-btn.loading:hover .stop-icon {
    display: block;
    color: var(--text-primary);
    width: 16px;
    height: 16px;
}

/* Subtle status hint below input box */
.query-status-hint {
    text-align: center;
    font-size: 0.7rem;
    color: var(--text-muted);
    padding: 0.3rem 0 0;
    opacity: 0.6;
    transition: opacity 0.3s ease;
    letter-spacing: 0.02em;
}

/* Index loading banner */
.index-loading-banner {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.6rem 1rem;
    background: var(--accent-gradient-subtle);
    border: 1px solid var(--border-focus);
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    transition: opacity 0.3s ease;
}

/* === Conversation Thread === */
.conversation-thread {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    max-height: 55vh;
    overflow-y: auto;
    padding: 0.5rem 0.25rem;
    margin-bottom: 1rem;
    scroll-behavior: smooth;
}

.conversation-thread::-webkit-scrollbar {
    width: 4px;
}

.conversation-thread::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 2px;
}

/* Question bubble */
.msg-question {
    align-self: flex-end;
    max-width: 85%;
    padding: 0.75rem 1rem;
    background: var(--accent-gradient-subtle);
    border: 1px solid var(--border-focus);
    border-radius: var(--radius-md) var(--radius-md) 4px var(--radius-md);
    font-size: 0.9rem;
    color: var(--text-primary);
    animation: fadeIn 0.3s ease;
}

/* Answer card */
.msg-answer {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 1.25rem 1.5rem;
    backdrop-filter: blur(10px);
    animation: fadeIn 0.35s ease;
}

/* Thinking toggle (collapsed by default) */

/* Enhanced query banner — shown when the backend rewrites a vague question */
.msg-enhanced-query {
    margin-bottom: 0.6rem;
    padding: 0.4rem 0.7rem;
    background: rgba(56, 189, 248, 0.06);
    border: 1px solid rgba(56, 189, 248, 0.15);
    border-radius: var(--radius-sm);
    font-size: 0.72rem;
    color: var(--text-muted);
    line-height: 1.5;
}

.msg-enhanced-query em {
    color: var(--accent-cyan);
    font-style: italic;
}

.msg-thinking {
    margin-bottom: 0.75rem;
}

.msg-thinking-toggle {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.35rem 0.7rem;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    font-family: var(--font-sans);
    font-size: 0.72rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.msg-thinking-toggle:hover {
    background: rgba(255, 255, 255, 0.06);
    color: var(--text-secondary);
    border-color: rgba(255, 255, 255, 0.1);
}

.thinking-icon {
    font-size: 0.85rem;
    line-height: 1;
}

.thinking-label {
    letter-spacing: 0.02em;
}

.thinking-chevron {
    font-size: 0.55rem;
    transition: transform 0.2s ease;
    display: inline-block;
}

.msg-thinking.open .thinking-chevron {
    transform: rotate(90deg);
}

.msg-thinking.open .thinking-label::after {
    content: none;
}

.msg-thinking-content {
    display: none;
    margin-top: 0.5rem;
    padding: 0.75rem 1rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-size: 0.8rem;
    line-height: 1.65;
    color: var(--text-secondary);
    max-height: 300px;
    overflow-y: auto;
}

.msg-thinking-content::-webkit-scrollbar {
    width: 3px;
}

.msg-thinking-content::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 2px;
}

.msg-thinking.open .msg-thinking-content {
    display: block;
    animation: fadeIn 0.2s ease;
}

.msg-answer-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
}

.msg-answer-label {
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--accent-purple);
    font-weight: 600;
}

.msg-answer-time {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--text-muted);
}

.msg-answer-text {
    font-size: 0.92rem;
    line-height: 1.7;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

/* Blinking cursor shown during token streaming */
.stream-cursor {
    display: inline-block;
    width: 2px;
    height: 1em;
    background: var(--accent-primary);
    margin-left: 2px;
    vertical-align: text-bottom;
    animation: blink 0.8s step-end infinite;
}
@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

/* Markdown-rendered content in answers */
.msg-answer-text p,
.batch-answer p {
    margin: 0 0 0.6em 0;
}

.msg-answer-text p:last-child,
.batch-answer p:last-child {
    margin-bottom: 0;
}

.msg-answer-text ol,
.msg-answer-text ul,
.batch-answer ol,
.batch-answer ul {
    margin: 0.5em 0;
    padding-left: 1.6em;
}

.msg-answer-text li,
.batch-answer li {
    margin-bottom: 0.35em;
    line-height: 1.6;
}

.msg-answer-text strong,
.batch-answer strong {
    color: #e2e8f0;
    font-weight: 600;
}

.msg-answer-text code,
.batch-answer code {
    background: rgba(255, 255, 255, 0.08);
    padding: 0.15em 0.4em;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.85em;
    color: var(--accent-cyan);
}

.msg-answer-text pre,
.batch-answer pre {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 0.75rem 1rem;
    margin: 0.6em 0;
    overflow-x: auto;
}

.msg-answer-text pre code,
.batch-answer pre code {
    background: none;
    padding: 0;
    font-size: 0.82rem;
    color: var(--text-primary);
}

.msg-answer-text h2,
.msg-answer-text h3,
.msg-answer-text h4,
.batch-answer h2,
.batch-answer h3,
.batch-answer h4 {
    margin: 0.8em 0 0.4em 0;
    color: var(--text-primary);
    font-weight: 600;
}

.msg-answer-text h2,
.batch-answer h2 {
    font-size: 1.1em;
}

.msg-answer-text h3,
.batch-answer h3 {
    font-size: 1em;
}

.msg-answer-text h4,
.batch-answer h4 {
    font-size: 0.95em;
}

/* Inline footnote markers — subtle superscript style */
.footnote-ref {
    display: inline;
    font-size: 0.6em;
    font-weight: 600;
    color: var(--accent-cyan);
    vertical-align: super;
    margin: 0 1px;
    cursor: default;
    line-height: 1;
    opacity: 0.85;
}

.footnote-ref.clickable {
    cursor: pointer;
    transition: var(--transition);
    border-bottom: 1px dotted transparent;
}

.footnote-ref.clickable:hover {
    opacity: 1;
    color: var(--accent-purple);
    border-bottom-color: var(--accent-purple);
}

/* Footnotes section */
.msg-footnotes {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
    padding: 0.75rem 0;
    border-top: 1px solid var(--border);
    margin-bottom: 0.75rem;
}

.msg-footnotes-title {
    font-size: 0.6rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
    font-weight: 600;
    margin-bottom: 0.2rem;
}

.footnote-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-family: var(--font-mono);
    padding: 0.25rem 0.4rem;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.footnote-item.clickable {
    cursor: pointer;
}

.footnote-item.clickable:hover {
    background: rgba(168, 85, 247, 0.08);
    border-color: rgba(168, 85, 247, 0.2);
}

.footnote-view-icon {
    font-size: 0.75rem;
    opacity: 0;
    transition: opacity 0.2s ease;
    margin-left: auto;
}

.footnote-item.clickable:hover .footnote-view-icon {
    opacity: 0.7;
}

.footnote-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 18px;
    height: 18px;
    background: var(--accent-gradient-subtle);
    border: 1px solid var(--border-focus);
    border-radius: 50%;
    font-size: 0.6rem;
    font-weight: 700;
    color: var(--text-primary);
    flex-shrink: 0;
}

.footnote-doc {
    color: var(--text-primary);
    font-weight: 500;
}

.footnote-page {
    color: var(--accent-cyan);
    font-weight: 600;
}

/* Legacy source tags (still used in batch mode) */
.msg-sources {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-bottom: 0.8rem;
}

.source-tag {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 0.3rem 0.7rem;
    background: var(--accent-gradient-subtle);
    border: 1px solid rgba(168, 85, 247, 0.2);
    border-radius: 100px;
    font-size: 0.72rem;
    font-weight: 500;
    color: var(--text-primary);
    font-family: var(--font-mono);
}

.source-page {
    color: var(--accent-cyan);
    font-weight: 600;
}

/* Confidence with tooltip */
.msg-confidence {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.confidence-bar {
    flex: 1;
    max-width: 120px;
    height: 4px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 2px;
    overflow: hidden;
}

.confidence-fill {
    height: 100%;
    border-radius: 2px;
    transition: width 0.6s ease;
}

.confidence-text {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--text-muted);
}

.confidence-info {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--border);
    cursor: help;
    color: var(--text-muted);
    font-size: 0.6rem;
    font-weight: 700;
    flex-shrink: 0;
}

.confidence-tooltip {
    display: none;
    position: absolute;
    bottom: calc(100% + 8px);
    right: 0;
    width: 240px;
    padding: 0.6rem 0.75rem;
    background: #1a1a2e;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 0.72rem;
    font-weight: 400;
    color: var(--text-secondary);
    line-height: 1.4;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
    z-index: 100;
    pointer-events: none;
    white-space: normal;
    word-wrap: break-word;
}

.confidence-tooltip::after {
    content: '';
    position: absolute;
    top: 100%;
    right: 12px;
    border: 6px solid transparent;
    border-top-color: var(--border);
}

.confidence-info:hover .confidence-tooltip {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(12px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Result card (kept for batch mode) */
.result-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    backdrop-filter: blur(10px);
    animation: fadeIn 0.35s ease;
}

.result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.result-label {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--accent-purple);
    font-weight: 600;
}

.result-time {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
}

.result-answer {
    font-size: 0.95rem;
    line-height: 1.7;
    color: var(--text-primary);
    margin-bottom: 1.2rem;
}

.result-sources {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-bottom: 0.8rem;
}

.source-tag {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 0.3rem 0.7rem;
    background: var(--accent-gradient-subtle);
    border: 1px solid rgba(168, 85, 247, 0.2);
    border-radius: 100px;
    font-size: 0.72rem;
    font-weight: 500;
    color: var(--text-primary);
    font-family: var(--font-mono);
}

.source-page {
    color: var(--accent-cyan);
    font-weight: 600;
}

.result-confidence {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.confidence-bar {
    flex: 1;
    max-width: 120px;
    height: 4px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 2px;
    overflow: hidden;
}

.confidence-fill {
    height: 100%;
    border-radius: 2px;
    transition: width 0.6s ease;
}

.confidence-text {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--text-muted);
}

/* Batch results */
.batch-results {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.batch-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 1.25rem;
    backdrop-filter: blur(10px);
    animation: fadeIn 0.35s ease;
    animation-fill-mode: backwards;
}

.batch-card:nth-child(2) {
    animation-delay: 0.05s;
}

.batch-card:nth-child(3) {
    animation-delay: 0.1s;
}

.batch-card:nth-child(4) {
    animation-delay: 0.15s;
}

.batch-card:nth-child(5) {
    animation-delay: 0.2s;
}

.batch-q-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    background: var(--accent-gradient);
    border-radius: 6px;
    font-size: 0.7rem;
    font-weight: 700;
    color: white;
    margin-right: 0.5rem;
}

.batch-question {
    font-size: 0.82rem;
    color: var(--text-secondary);
    margin-bottom: 0.6rem;
    line-height: 1.4;
}

.batch-answer {
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--text-primary);
    margin-bottom: 0.6rem;
}

/* Summary card */
.batch-summary {
    background: var(--accent-gradient-subtle);
    border: 1px solid var(--border-focus);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    margin-bottom: 1rem;
    display: flex;
    justify-content: space-around;
    text-align: center;
}

.summary-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.summary-value {
    font-family: var(--font-mono);
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.summary-label {
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
}

/* === Footer === */
.footer {
    position: relative;
    z-index: 1;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    border-top: 1px solid var(--border);
    font-size: 0.72rem;
    color: var(--text-muted);
}

.footer-accent {
    font-weight: 600;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-version {
    font-weight: 400;
    font-size: 0.65rem;
    opacity: 0.7;
}

/* === Batch Question Editor === */
.batch-questions-editor {
    margin-bottom: 1rem;
}

.batch-editor-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.6rem;
}

.batch-editor-title {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.batch-editor-actions {
    display: flex;
    gap: 0.4rem;
}

.batch-action-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.35rem 0.65rem;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-family: var(--font-sans);
    font-size: 0.72rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.batch-action-btn:hover {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
    border-color: rgba(255, 255, 255, 0.12);
}

.batch-action-btn.danger:hover {
    color: var(--danger);
    border-color: rgba(239, 68, 68, 0.3);
}

.batch-questions-list {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    max-height: 300px;
    overflow-y: auto;
    padding-right: 0.25rem;
}

.batch-questions-list::-webkit-scrollbar {
    width: 3px;
}

.batch-questions-list::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 2px;
}

.batch-q-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.15rem 0;
}

.batch-q-item .batch-q-num {
    flex-shrink: 0;
    width: 22px;
    height: 22px;
    font-size: 0.65rem;
}

.batch-q-input {
    flex: 1;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 0.45rem 0.65rem;
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.82rem;
    transition: var(--transition);
}

.batch-q-input:focus {
    outline: none;
    border-color: var(--border-focus);
    box-shadow: var(--shadow-glow);
}

.batch-q-input::placeholder {
    color: var(--text-muted);
}

.batch-q-remove {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 26px;
    height: 26px;
    background: none;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    cursor: pointer;
    transition: var(--transition);
    opacity: 0.4;
}

.batch-q-item:hover .batch-q-remove {
    opacity: 1;
}

.batch-q-remove:hover {
    color: var(--danger);
    border-color: rgba(239, 68, 68, 0.3);
    background: rgba(239, 68, 68, 0.08);
}

/* === Settings Panel === */
.settings-wrap {
    position: relative;
    margin-left: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.settings-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
}

.settings-btn:hover {
    color: var(--text-primary);
    border-color: var(--border-focus);
    background: var(--bg-card-hover);
}

.settings-btn:hover svg {
    transform: rotate(45deg);
    transition: transform 0.3s ease;
}

.settings-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    width: 320px;
    background: rgba(15, 15, 25, 0.97);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 1.25rem;
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(20px);
    z-index: 100;
    animation: fadeIn 0.2s ease;
}

.settings-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border);
}

.settings-header h3 {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.settings-close {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 0 4px;
    line-height: 1;
    transition: var(--transition);
}

.settings-close:hover {
    color: var(--text-primary);
}

.settings-group {
    margin-bottom: 0.75rem;
}

.settings-label {
    display: block;
    font-size: 0.68rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    margin-bottom: 0.35rem;
}

.settings-select {
    width: 100%;
    padding: 0.5rem 0.75rem;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.82rem;
    cursor: pointer;
    transition: var(--transition);
}

.settings-select:focus {
    outline: none;
    border-color: var(--border-focus);
}

.settings-select option {
    background: #1a1a2e;
    color: var(--text-primary);
}

.settings-input {
    width: 100%;
    padding: 0.5rem 0.75rem;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.78rem;
    transition: var(--transition);
    box-sizing: border-box;
}

.settings-input:focus {
    outline: none;
    border-color: var(--border-focus);
    box-shadow: var(--shadow-glow);
}

.settings-input::placeholder {
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: 0.75rem;
}

/* Override browser autofill styling (yellow background + border) */
.settings-input:-webkit-autofill,
.settings-input:-webkit-autofill:hover,
.settings-input:-webkit-autofill:focus,
.settings-input:-webkit-autofill:active {
    -webkit-box-shadow: 0 0 0 30px var(--bg-input) inset !important;
    -webkit-text-fill-color: var(--text-primary) !important;
    border: 1px solid var(--border) !important;
    outline: none !important;
    caret-color: var(--text-primary) !important;
    transition: background-color 5000s ease-in-out 0s;
}

.settings-divider {
    height: 1px;
    background: var(--border);
    margin: 0.75rem 0;
}

.settings-save-btn {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.6rem;
    margin-top: 0.5rem;
    background: var(--accent-gradient);
    border: none;
    border-radius: var(--radius-sm);
    color: white;
    font-family: var(--font-sans);
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.settings-save-btn:hover {
    filter: brightness(1.1);
    transform: translateY(-1px);
}

.settings-save-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.settings-hint {
    font-size: 0.72rem;
    text-align: center;
    margin-top: 0.5rem;
    min-height: 1em;
}

.settings-hint-inline {
    font-size: 0.65rem;
    font-weight: 400;
    text-transform: none;
    letter-spacing: 0;
    margin-left: 0.3rem;
}

/* === API Key Test Buttons === */
.settings-key-row {
    display: flex;
    gap: 0.4rem;
    align-items: center;
}

.settings-key-row .settings-input {
    flex: 1;
    min-width: 0;
}

.key-test-btn {
    flex-shrink: 0;
    padding: 0.45rem 0.7rem;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-family: var(--font-sans);
    font-size: 0.72rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.key-test-btn:hover {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
    border-color: var(--border-focus);
}

.key-test-btn:disabled {
    opacity: 0.5;
    cursor: wait;
}

.key-status {
    display: block;
    font-size: 0.7rem;
    font-weight: 500;
    min-height: 1.1em;
    margin-top: 0.2rem;
    transition: color 0.2s ease;
}

.key-status.valid {
    color: var(--success);
}

.key-status.invalid {
    color: var(--danger);
}

.key-status.testing {
    color: var(--warning);
}

/* === Cancel Ingestion Button === */
.cancel-ingest-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 1.2rem;
    padding: 0.6rem 1.4rem;
    background: transparent;
    border: 1px solid var(--danger, #ef4444);
    border-radius: var(--radius-sm);
    color: var(--danger, #ef4444);
    font-family: var(--font-sans);
    font-size: 0.82rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.cancel-ingest-btn:hover {
    background: rgba(239, 68, 68, 0.1);
    border-color: #f87171;
    color: #f87171;
}

.cancel-ingest-btn:active {
    transform: scale(0.97);
}

.cancel-ingest-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* === Retry Bar (embedding failure recovery) === */
.retry-bar {
    margin-top: 1.5rem;
    padding: 1.2rem;
    background: rgba(245, 158, 11, 0.06);
    border: 1px solid rgba(245, 158, 11, 0.25);
    border-radius: var(--radius-md);
    animation: fadeIn 0.4s ease;
}

.retry-error-msg {
    display: flex;
    align-items: flex-start;
    gap: 0.6rem;
    margin-bottom: 1rem;
    color: var(--text-secondary);
    font-size: 0.82rem;
    line-height: 1.5;
}

.retry-error-msg svg {
    flex-shrink: 0;
    margin-top: 1px;
}

.retry-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.retry-btn {
    background: linear-gradient(135deg, #f59e0b, #d97706) !important;
}

.retry-btn:hover {
    filter: brightness(1.15);
}

/* === Ingestion Results Summary === */
.ingest-results {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
    animation: fadeIn 0.4s ease;
}

.ingest-results-header h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin: 0 0 0.3rem;
}

.ingest-results-summary {
    font-size: 0.82rem;
    color: var(--text-secondary);
    margin: 0 0 1rem;
}

.ingest-results-list {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    max-height: 300px;
    overflow-y: auto;
    margin-bottom: 1.2rem;
    padding-right: 0.25rem;
}

.ingest-results-list::-webkit-scrollbar {
    width: 4px;
}

.ingest-results-list::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 2px;
}

.ingest-result-item {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.55rem 0.8rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    animation: fadeIn 0.3s ease;
    animation-fill-mode: backwards;
}

.ingest-result-item.result-ok {
    border-left: 3px solid var(--success);
}

.ingest-result-item.result-fail {
    border-left: 3px solid var(--danger);
    background: rgba(239, 68, 68, 0.04);
}

.result-icon {
    font-size: 0.9rem;
    font-weight: 700;
    flex-shrink: 0;
    width: 18px;
    text-align: center;
}

.result-ok .result-icon {
    color: var(--success);
}

.result-fail .result-icon {
    color: var(--danger);
}

.result-name {
    flex: 1;
    color: var(--text-primary);
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    min-width: 0;
}

.result-detail {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--text-muted);
    white-space: nowrap;
    flex-shrink: 0;
    max-width: 250px;
    overflow: hidden;
    text-overflow: ellipsis;
}

.result-fail .result-detail {
    color: var(--danger);
    opacity: 0.85;
}

/* === Responsive === */
@media (max-width: 900px) {
    .sidebar-toggle {
        display: block;
    }

    .app-layout {
        grid-template-columns: 1fr;
    }

    .sidebar-overlay {
        position: fixed;
        top: 60px;
        /* Below header */
        left: 0;
        width: 100%;
        height: calc(100vh - 60px);
        background: rgba(0, 0, 0, 0.4);
        backdrop-filter: blur(2px);
        z-index: 40;
        /* Below sidebar (50) */
        opacity: 0;
        pointer-events: none;
        transition: opacity 0.3s ease;
    }

    .sidebar-overlay.open {
        opacity: 1;
        pointer-events: auto;
    }

    .sidebar {
        position: fixed;
        top: 60px;
        left: 0;
        z-index: 50;
        width: var(--sidebar-width);
        transform: translateX(-100%);
        box-shadow: 4px 0 24px rgba(0, 0, 0, 0.4);
        transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .header {
        padding: 0.8rem 1rem;
    }

    .main {
        padding: 1.5rem 1rem 3rem;
        width: 100% !important;
        max-width: 100vw !important;
        margin: 0;
    }

    /* Force chat structural elements to span full width */
    .phase,
    .query-panel,
    .conversation-thread,
    .controls-row {
        width: 100%;
        max-width: 100%;
    }

    .controls-row {
        flex-direction: column;
        align-items: stretch;
    }

    .batch-controls {
        flex-direction: column;
    }

    .batch-summary {
        flex-direction: column;
        gap: 1rem;
    }

    .mode-selector {
        flex-direction: row;
        width: 100%;
    }
}

@media (max-width: 650px) {
    .logo-subtitle {
        display: none;
    }

    .stats-bar {
        display: none;
    }
}

@media (max-width: 480px) {
    .upload-zone {
        padding: 2rem 1rem;
    }

    /* Reduce main padding to give chat more room */
    .main {
        padding: 1rem 0.5rem 2rem;
    }

    /* Tighten controls */
    .controls-row {
        gap: 0.75rem;
        margin-bottom: 1rem;
    }

    .provider-btn {
        padding: 0.4rem 0.6rem;
        font-size: 0.75rem;
    }

    .model-select {
        font-size: 0.75rem;
        padding: 0.4rem 1.7rem 0.4rem 0.6rem;
    }

    .mode-btn {
        padding: 0.6rem;
        font-size: 0.8rem;
    }

    .chat-actions {
        gap: 0.5rem;
    }

    .chat-action-btn {
        padding: 0.4rem 0.6rem;
        font-size: 0.75rem;
    }

    /* Thinner chat bubbles */
    .chat-container {
        gap: 0.75rem;
    }

    .msg-answer {
        padding: 0.85rem 1rem;
    }

    .msg-question {
        padding: 0.6rem 0.85rem;
        max-width: 95%;
    }
}

/* ========== Search Panel ========== */

.search-panel {
    display: flex;
    flex-direction: column;
    height: 100%;
    padding: 1rem;
    gap: 0.75rem;
}

.search-input-wrap {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 0.5rem 0.75rem;
    transition: var(--transition);
}

.search-input-wrap:focus-within {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 2px rgba(139, 92, 246, 0.15);
}

.search-input-icon {
    flex-shrink: 0;
    color: var(--text-muted);
}

.search-input {
    flex: 1;
    background: none;
    border: none;
    outline: none;
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.85rem;
    min-width: 0;
}

.search-input::placeholder {
    color: var(--text-muted);
}

.search-clear-btn {
    flex-shrink: 0;
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0.2rem;
    border-radius: 4px;
    transition: var(--transition);
    display: flex;
    align-items: center;
}

.search-clear-btn:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.08);
}

.search-summary {
    font-size: 0.72rem;
    color: var(--text-muted);
    font-weight: 500;
    min-height: 1rem;
}

.search-results {
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.search-empty {
    color: var(--text-muted);
    text-align: center;
    padding: 3rem 1rem;
    font-size: 0.85rem;
}

.search-result-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 0.75rem;
    transition: var(--transition);
}

.search-result-card:hover {
    border-color: var(--border-focus);
    background: rgba(255, 255, 255, 0.04);
}

.search-result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.4rem;
    gap: 0.5rem;
}

.search-result-doc {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent-primary);
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.search-result-doc svg {
    flex-shrink: 0;
}

.search-result-meta {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    flex-shrink: 0;
}

.search-result-page {
    font-size: 0.68rem;
    color: var(--text-muted);
    background: rgba(255, 255, 255, 0.06);
    padding: 0.1rem 0.4rem;
    border-radius: 4px;
    font-weight: 500;
}

.search-result-section {
    font-size: 0.68rem;
    color: var(--text-muted);
    max-width: 120px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.search-result-score {
    font-size: 0.65rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
    opacity: 0.6;
}

.search-result-text {
    font-size: 0.78rem;
    color: var(--text-secondary);
    line-height: 1.5;
    max-height: 6rem;
    overflow: hidden;
    word-break: break-word;
}

.search-result-text mark {
    background: rgba(250, 204, 21, 0.25);
    color: #fcd34d;
    border-radius: 2px;
    padding: 0 1px;
}

/* ========== Conversation Actions (Export + Delete) ========== */

.conv-actions {
    display: flex;
    align-items: center;
    gap: 2px;
    flex-shrink: 0;
    opacity: 0;
    transition: opacity 0.15s;
}

.conv-item:hover .conv-actions {
    opacity: 1;
}

.conv-export {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 2px 3px;
    border-radius: 3px;
    display: flex;
    align-items: center;
    transition: var(--transition);
}

.conv-export:hover {
    color: var(--accent-primary);
    background: rgba(139, 92, 246, 0.12);
}

/* ========== Rendered Markdown in Answers ========== */

.msg-answer-text h2,
.msg-answer-text h3,
.msg-answer-text h4,
.batch-answer h2,
.batch-answer h3,
.batch-answer h4 {
    margin: 0.8em 0 0.4em;
    color: var(--text-primary);
    line-height: 1.3;
}

.msg-answer-text h2,
.batch-answer h2 {
    font-size: 1.1rem;
}

.msg-answer-text h3,
.batch-answer h3 {
    font-size: 0.95rem;
}

.msg-answer-text h4,
.batch-answer h4 {
    font-size: 0.85rem;
}

.msg-answer-text p,
.batch-answer p {
    margin: 0 0 0.5em;
}

.msg-answer-text strong,
.batch-answer strong {
    color: var(--text-primary);
    font-weight: 600;
}

/* Inline code */
.msg-answer-text code,
.batch-answer code {
    font-family: var(--font-mono);
    font-size: 0.82em;
    background: rgba(255, 255, 255, 0.06);
    padding: 0.15em 0.35em;
    border-radius: 4px;
    color: #e2b3ff;
}

/* Code blocks */
.msg-answer-text pre,
.batch-answer pre {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 0.75rem 1rem;
    margin: 0.6em 0;
    overflow-x: auto;
    line-height: 1.5;
}

.msg-answer-text pre code,
.batch-answer pre code {
    background: none;
    padding: 0;
    font-size: 0.78rem;
    color: var(--text-secondary);
}

/* Tables */
.msg-answer-text table,
.batch-answer table {
    width: 100%;
    border-collapse: collapse;
    margin: 0.6em 0;
    font-size: 0.8rem;
}

.msg-answer-text th,
.batch-answer th {
    text-align: left;
    padding: 0.45rem 0.65rem;
    background: rgba(255, 255, 255, 0.05);
    border-bottom: 2px solid var(--border);
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.msg-answer-text td,
.batch-answer td {
    padding: 0.4rem 0.65rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    color: var(--text-secondary);
}

.msg-answer-text tbody tr:hover,
.batch-answer tbody tr:hover {
    background: rgba(255, 255, 255, 0.02);
}

/* Lists */
.msg-answer-text ul,
.msg-answer-text ol,
.batch-answer ul,
.batch-answer ol {
    margin: 0.4em 0;
    padding-left: 1.5em;
}

.msg-answer-text li,
.batch-answer li {
    margin: 0.15em 0;
    line-height: 1.5;
}

.msg-answer-text ul li::marker {
    color: var(--accent-primary);
}

/* Horizontal rules */
.msg-answer-text hr,
.batch-answer hr {
    border: none;
    border-top: 1px solid var(--border);
    margin: 0.8em 0;
}

/* === Document Viewer Overlay === */
.doc-viewer-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10000;
    opacity: 0;
    transition: opacity 0.25s ease;
    pointer-events: none;
}

.doc-viewer-overlay.visible {
    opacity: 1;
    pointer-events: auto;
}

.doc-viewer-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
}

.doc-viewer-container {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.95);
    width: 90vw;
    height: 90vh;
    max-width: 1200px;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.5);
    transition: transform 0.25s ease;
}

.doc-viewer-overlay.visible .doc-viewer-container {
    transform: translate(-50%, -50%) scale(1);
}

.doc-viewer-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1.25rem;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}

.doc-viewer-file-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    min-width: 0;
}

.doc-viewer-file-info svg {
    flex-shrink: 0;
    opacity: 0.6;
}

.doc-viewer-filename {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-family: var(--font-mono);
}

.doc-viewer-page-badge {
    font-size: 0.65rem;
    font-weight: 600;
    color: var(--accent-cyan);
    background: rgba(6, 182, 212, 0.1);
    border: 1px solid rgba(6, 182, 212, 0.2);
    border-radius: 100px;
    padding: 0.15rem 0.5rem;
    white-space: nowrap;
}

.doc-viewer-page-badge:empty {
    display: none;
}

.doc-viewer-controls {
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.doc-viewer-nav-btn,
.doc-viewer-close-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
}

.doc-viewer-nav-btn:hover,
.doc-viewer-close-btn:hover {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
    border-color: var(--border-focus);
}

.doc-viewer-close-btn:hover {
    background: rgba(239, 68, 68, 0.1);
    border-color: rgba(239, 68, 68, 0.3);
    color: #ef4444;
}

.doc-viewer-body {
    flex: 1;
    overflow: hidden;
    position: relative;
}

.doc-viewer-iframe {
    width: 100%;
    height: 100%;
    border: none;
    background: var(--bg-secondary);
}

/* === Mobile Responsiveness === */

@media (max-width: 900px) {
    .app-layout {
        grid-template-columns: 1fr;
    }

    .sidebar-toggle {
        display: flex;
    }

    .sidebar {
        position: fixed;
        left: calc(var(--sidebar-width) * -1);
        width: var(--sidebar-width);
        z-index: 1000;
        box-shadow: 10px 0 30px rgba(0, 0, 0, 0.5);
    }

    .sidebar.open {
        transform: translateX(var(--sidebar-width));
    }

    .sidebar-overlay {
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, 0.5);
        backdrop-filter: blur(3px);
        z-index: 999;
        opacity: 0;
        pointer-events: none;
        transition: opacity var(--transition);
        display: none;
    }

    .sidebar-overlay.open {
        display: block;
        opacity: 1;
        pointer-events: auto;
    }

    .sidebar-overlay.hidden {
        display: none !important;
    }

    /* Adjust main content padding */
    .query-input-wrap {
        margin: 0 1rem 1rem;
    }

    .controls-row {
        flex-direction: column;
        align-items: stretch;
        gap: 0.8rem;
    }

    .provider-toggle .provider-buttons,
    .mode-selector {
        width: 100%;
        display: flex;
    }

    .provider-toggle {
        width: 100%;
        align-items: flex-start;
    }

    .provider-btn,
    .mode-btn {
        flex: 1;
        justify-content: center;
    }

    .model-selector-wrap {
        width: 100%;
        margin-left: 0;
    }

    .model-select {
        width: 100%;
    }
}

@media (max-width: 600px) {
    .header {
        padding: 0.8rem 1rem;
    }

    .logo-text h1 {
        font-size: 1.1rem;
    }

    .logo-subtitle {
        display: none;
    }

    .stats-bar {
        display: none;
    }

    .msg-content {
        padding: 0.8rem 1rem;
    }

    .chat-actions {
        flex-direction: column;
        width: 100%;
    }

    .chat-action-btn {
        width: 100%;
        justify-content: center;
    }

    .upload-zone {
        padding: 2rem 1rem;
    }
}

/* === Community & Project Settings === */

/* Modal Overlay */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.modal-overlay.hidden {
    display: none;
}

.modal-container {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    max-width: 600px;
    width: 100%;
    max-height: 85vh;
    display: flex;
    flex-direction: column;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.2rem 1.5rem;
    border-bottom: 1px solid var(--border);
}

.modal-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.modal-close:hover {
    color: var(--text-primary);
    background: var(--bg-card);
}

.modal-body {
    padding: 1.5rem;
    overflow-y: auto;
    flex: 1;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border);
}

/* Project Settings Modal */
.project-settings-modal {
    max-width: 560px;
}

.settings-textarea {
    resize: vertical;
    min-height: 60px;
    font-family: var(--font-sans);
    line-height: 1.5;
}

.publish-section {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 1.2rem;
    margin-top: 0.5rem;
}

.publish-section h4 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.3rem;
}

.publish-info .settings-hint {
    margin-bottom: 0.8rem;
}

.publish-status {
    margin-bottom: 0.5rem;
}

.publish-active {
    color: var(--success);
    font-size: 0.85rem;
    font-weight: 500;
}

.publish-btn {
    width: 100%;
}

.publish-btn.unpublish {
    background: var(--danger);
}

.publish-btn.unpublish:hover {
    background: #dc2626;
}

/* Published Badge in Sidebar */
.published-badge {
    display: inline-block;
    font-size: 0.6rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--success);
    background: rgba(34, 197, 94, 0.12);
    padding: 1px 5px;
    border-radius: 4px;
    margin-left: 4px;
    vertical-align: middle;
}

/* Project Settings Button in Sidebar */
.chat-item-settings {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    transition: var(--transition);
    display: flex;
    align-items: center;
}

.chat-item-settings:hover {
    color: var(--accent-purple);
    background: rgba(168, 85, 247, 0.1);
}

/* Community Hub Modal */
.community-hub-modal {
    max-width: 800px;
    max-height: 90vh;
}

.community-search-bar {
    padding: 1rem 1.5rem 0.5rem;
    border-bottom: 1px solid var(--border);
}

.community-search-bar .settings-input {
    margin-bottom: 0.75rem;
}

.community-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    padding-bottom: 0.75rem;
}

.community-tag {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 0.3rem 0.8rem;
    font-size: 0.78rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-sans);
}

.community-tag:hover {
    border-color: var(--accent-purple);
    color: var(--text-primary);
}

.community-tag.active {
    background: rgba(168, 85, 247, 0.15);
    border-color: var(--accent-purple);
    color: var(--accent-purple);
}

.tag-count {
    opacity: 0.6;
    font-size: 0.7rem;
    margin-left: 2px;
}

/* Community Grid */
.community-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1rem;
    padding: 1.5rem !important;
}

.community-empty {
    grid-column: 1 / -1;
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-muted);
}

.community-empty p {
    margin-top: 0.75rem;
    font-size: 0.9rem;
}

/* Community Card */
.community-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 1.2rem;
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    transition: var(--transition);
}

.community-card:hover {
    border-color: rgba(168, 85, 247, 0.3);
    box-shadow: 0 4px 20px rgba(168, 85, 247, 0.08);
}

.community-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
}

.community-card-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.community-card-badge {
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--accent-cyan);
    background: rgba(6, 182, 212, 0.1);
    padding: 2px 6px;
    border-radius: 4px;
    white-space: nowrap;
    flex-shrink: 0;
}

.community-card-desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin: 0;
}

.community-card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.3rem;
}

.community-card-tag {
    font-size: 0.7rem;
    color: var(--accent-purple);
    background: rgba(168, 85, 247, 0.1);
    padding: 2px 8px;
    border-radius: 12px;
}

.community-card-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: auto;
}

.community-clone-btn {
    margin-top: 0.5rem;
    font-size: 0.85rem;
    padding: 0.5rem 1rem;
    width: 100%;
    justify-content: center;
}

/* Sidebar Header Actions */
.sidebar-header-actions {
    display: flex;
    gap: 0.4rem;
}

.community-hub-btn {
    font-size: 0.75rem !important;
    padding: 0.4rem 0.6rem !important;
    background: var(--bg-card) !important;
    border: 1px solid var(--border) !important;
}

.community-hub-btn:hover {
    border-color: var(--accent-purple) !important;
    color: var(--accent-purple) !important;
}

/* Mobile responsive for modals */
@media (max-width: 600px) {
    .modal-container {
        max-height: 95vh;
        border-radius: var(--radius-md);
    }

    .community-hub-modal {
        max-width: 100%;
    }

    .community-grid {
        grid-template-columns: 1fr;
    }
}

/* ========== Auth Screen ========== */

.auth-screen {
    position: fixed;
    inset: 0;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-primary);
}

.auth-screen.hidden {
    display: none;
}

.auth-card {
    width: 100%;
    max-width: 380px;
    padding: 2.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    text-align: center;
}

.auth-logo {
    margin-bottom: 2rem;
}

.auth-logo h2 {
    margin: 0.5rem 0 0.25rem;
    font-size: 1.5rem;
    color: var(--text-primary);
}

.auth-subtitle {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin: 0;
}

.auth-google-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    width: 100%;
    padding: 0.75rem;
    background: white;
    color: #333;
    border: 1px solid #ddd;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.auth-google-btn:hover {
    background: #f5f5f5;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.auth-divider {
    display: flex;
    align-items: center;
    margin: 1.25rem 0;
    color: var(--text-muted);
    font-size: 0.8rem;
}

.auth-divider::before,
.auth-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border);
}

.auth-divider span {
    padding: 0 1rem;
}

.auth-email-form {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.auth-input {
    padding: 0.7rem 1rem;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.9rem;
    font-family: var(--font-sans);
    outline: none;
    transition: var(--transition);
}

.auth-input:focus {
    border-color: var(--border-focus);
}

.auth-input::placeholder {
    color: var(--text-muted);
}

.auth-email-btn {
    padding: 0.7rem;
    background: var(--accent-gradient);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.auth-email-btn:hover {
    opacity: 0.9;
}

/* Auth User Info (sidebar bottom) */

.auth-user-info {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.8rem 1rem;
    border-top: 1px solid var(--border);
    flex-shrink: 0;
    transition: var(--transition);
}

.auth-user-info:hover {
    background: rgba(255, 255, 255, 0.03);
}

.auth-user-info.hidden {
    display: none;
}

.auth-user {
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.auth-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    object-fit: cover;
}

.auth-avatar-placeholder {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--accent-gradient);
    opacity: 0.8;
}

.auth-name {
    color: var(--text-primary);
    font-size: 0.85rem;
    font-weight: 500;
    max-width: 120px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.auth-signout-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 6px;
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.auth-signout-btn:hover {
    color: var(--danger);
    background: rgba(239, 68, 68, 0.1);
}

@media (max-width: 768px) {
    .auth-name {
        display: none;
    }
}
/* ========== Feature Request Button ========== */

.feature-request-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.4rem;
    border-radius: 8px;
    color: var(--text-muted);
    transition: color 0.2s, background 0.2s;
    display: flex;
    align-items: center;
}
.feature-request-btn:hover {
    color: var(--accent-primary);
    background: rgba(168, 85, 247, 0.1);
}

/* ========== Modal ========== */

.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
}
.modal-overlay.hidden {
    display: none;
}
.modal-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: 16px;
    width: min(480px, 90vw);
    box-shadow: 0 24px 64px rgba(0,0,0,0.4);
    overflow: hidden;
}
.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.2rem 1.5rem 1rem;
    border-bottom: 1px solid var(--border-subtle);
}
.modal-header h3 {
    margin: 0;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}
.modal-close {
    background: none;
    border: none;
    font-size: 1.4rem;
    cursor: pointer;
    color: var(--text-muted);
    line-height: 1;
    padding: 0 0.2rem;
}
.modal-close:hover { color: var(--text-primary); }
.modal-body {
    padding: 1.2rem 1.5rem;
}
.modal-hint {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin: 0 0 0.8rem;
}
.modal-textarea {
    width: 100%;
    background: var(--bg-input, rgba(255,255,255,0.05));
    border: 1px solid var(--border-subtle);
    border-radius: 10px;
    padding: 0.75rem 1rem;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.9rem;
    resize: vertical;
    box-sizing: border-box;
    line-height: 1.6;
}
.modal-textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
}
.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    padding: 0.75rem 1.5rem 1.2rem;
}
.modal-cancel-btn {
    background: none;
    border: 1px solid var(--border-subtle);
    border-radius: 8px;
    padding: 0.5rem 1.1rem;
    color: var(--text-muted);
    font-size: 0.88rem;
    cursor: pointer;
}
.modal-cancel-btn:hover { color: var(--text-primary); }
.modal-submit-btn {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary, #06b6d4));
    border: none;
    border-radius: 8px;
    padding: 0.5rem 1.3rem;
    color: #fff;
    font-size: 0.88rem;
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.2s;
}
.modal-submit-btn:disabled { opacity: 0.6; cursor: default; }
.modal-submit-btn:not(:disabled):hover { opacity: 0.9; }