/* ===== Mentor Bot Factory — 2026 Design System ===== */

/* ---------- Design Tokens (Dark Mode - Default) ---------- */
:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-tertiary: #1a1a26;
    --bg-elevated: #222233;
    --bg-glass: rgba(255, 255, 255, 0.03);
    --bg-glass-hover: rgba(255, 255, 255, 0.06);
    --bg-glass-active: rgba(255, 255, 255, 0.08);

    --text-primary: #f0f0f5;
    --text-secondary: #8888a0;
    --text-tertiary: #5c5c70;
    --text-inverse: #0a0a0f;

    --accent: #6c5ce7;
    --accent-light: #a29bfe;
    --accent-glow: rgba(108, 92, 231, 0.3);
    --accent-subtle: rgba(108, 92, 231, 0.1);
    --success: #00cec9;
    --success-subtle: rgba(0, 206, 201, 0.12);
    --warning: #fdcb6e;
    --warning-subtle: rgba(253, 203, 110, 0.12);
    --danger: #ff6b6b;
    --danger-subtle: rgba(255, 107, 107, 0.12);
    --info: #74b9ff;

    --border: rgba(255, 255, 255, 0.06);
    --border-hover: rgba(255, 255, 255, 0.12);
    --border-accent: rgba(108, 92, 231, 0.3);

    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 24px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 48px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 30px rgba(108, 92, 231, 0.15);

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    --font-sans: 'Inter', -apple-system, system-ui, sans-serif;
    --font-mono: 'JetBrains Mono', 'SF Mono', monospace;

    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-med: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);

    --navbar-bg: rgba(10, 10, 15, 0.85);
}

/* ---------- Light Mode Tokens ---------- */
[data-theme="light"] {
    --bg-primary: #f5f5f7;
    --bg-secondary: #ffffff;
    --bg-tertiary: #e8e8ed;
    --bg-elevated: #ffffff;
    --bg-glass: rgba(0, 0, 0, 0.02);
    --bg-glass-hover: rgba(0, 0, 0, 0.04);
    --bg-glass-active: rgba(0, 0, 0, 0.06);

    --text-primary: #1a1a2e;
    --text-secondary: #5c5c70;
    --text-tertiary: #8888a0;
    --text-inverse: #f0f0f5;

    --accent: #5b4bd6;
    --accent-light: #6c5ce7;
    --accent-glow: rgba(108, 92, 231, 0.2);
    --accent-subtle: rgba(108, 92, 231, 0.08);
    --success: #00a8a3;
    --success-subtle: rgba(0, 168, 163, 0.1);
    --warning: #e5a800;
    --warning-subtle: rgba(229, 168, 0, 0.1);
    --danger: #e55050;
    --danger-subtle: rgba(229, 80, 80, 0.1);
    --info: #4a9eff;

    --border: rgba(0, 0, 0, 0.08);
    --border-hover: rgba(0, 0, 0, 0.15);
    --border-accent: rgba(108, 92, 231, 0.25);

    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 24px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 48px rgba(0, 0, 0, 0.12);
    --shadow-glow: 0 0 30px rgba(108, 92, 231, 0.1);

    --navbar-bg: rgba(255, 255, 255, 0.9);
}

/* ---------- Reset & Base ---------- */
*, *::before, *::after { box-sizing: border-box; }

body {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* Force text color inheritance for common elements */
body p, body span, body div, body strong, body em, body li, body label {
    color: inherit;
}

/* Ensure Bootstrap text-dark doesn't override in dark mode */
.text-dark {
    color: var(--text-primary) !important;
}

::selection {
    background: var(--accent);
    color: white;
}

a { color: var(--accent-light); text-decoration: none; }
a:hover { color: var(--accent); }

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

p, strong, span, label, li {
    color: inherit;
}

.card p, .card strong, .card span {
    color: var(--text-primary);
}

.card .text-muted, .card .text-muted strong {
    color: var(--text-secondary) !important;
}

small, .small { color: var(--text-secondary); }
.text-muted { color: var(--text-secondary) !important; }

/* ---------- Scrollbar ---------- */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.2); }

[data-theme="light"] ::-webkit-scrollbar-thumb { background: rgba(0,0,0,0.15); }
[data-theme="light"] ::-webkit-scrollbar-thumb:hover { background: rgba(0,0,0,0.25); }

/* ---------- Bootstrap Overrides ---------- */
.container, .container-fluid { padding-left: 1.5rem; padding-right: 1.5rem; }

.btn {
    font-weight: 500;
    border-radius: var(--radius-sm);
    padding: 0.5rem 1.25rem;
    font-size: 0.875rem;
    transition: all var(--transition-fast);
    border: 1px solid transparent;
    letter-spacing: 0.01em;
}

.btn-primary {
    background: var(--accent);
    border-color: var(--accent);
    color: white;
}
.btn-primary:hover, .btn-primary:focus {
    background: #5b4bd6;
    border-color: #5b4bd6;
    box-shadow: var(--shadow-glow);
    transform: translateY(-1px);
}

.btn-outline-primary {
    color: var(--accent-light);
    border-color: var(--border);
    background: var(--bg-glass);
}
.btn-outline-primary:hover {
    background: var(--accent-subtle);
    border-color: var(--border-accent);
    color: var(--accent-light);
}

.btn-outline-secondary {
    color: var(--text-secondary);
    border-color: var(--border);
    background: transparent;
}
.btn-outline-secondary:hover {
    background: var(--bg-glass-hover);
    border-color: var(--border-hover);
    color: var(--text-primary);
}

.btn-outline-danger {
    color: var(--danger);
    border-color: var(--border);
    background: transparent;
}
.btn-outline-danger:hover {
    background: var(--danger-subtle);
    border-color: rgba(255, 107, 107, 0.3);
    color: var(--danger);
}

.btn-outline-success {
    color: var(--success);
    border-color: var(--border);
}
.btn-outline-success:hover {
    background: var(--success-subtle);
    border-color: rgba(0, 206, 201, 0.3);
    color: var(--success);
}

.btn-outline-warning {
    color: var(--warning);
    border-color: var(--border);
}
.btn-outline-warning:hover {
    background: var(--warning-subtle);
    border-color: rgba(253, 203, 110, 0.3);
    color: var(--warning);
}

.btn-outline-dark, .btn-outline-light {
    color: var(--text-primary);
    border-color: var(--border);
}
.btn-outline-dark:hover, .btn-outline-light:hover {
    background: var(--bg-glass-hover);
    border-color: var(--border-hover);
    color: var(--text-primary);
}

.btn-success { background: var(--success); border-color: var(--success); color: var(--text-inverse); }
.btn-danger { background: var(--danger); border-color: var(--danger); color: white; }
.btn-warning { background: var(--warning); border-color: var(--warning); color: var(--text-inverse); }
.btn-secondary { background: var(--bg-elevated); border-color: var(--border); color: var(--text-primary); }
.btn-secondary:hover { background: var(--bg-glass-hover); border-color: var(--border-hover); color: var(--text-primary); }

.btn-sm { padding: 0.3rem 0.75rem; font-size: 0.8rem; }
.btn-lg { padding: 0.75rem 2rem; font-size: 1rem; }

.btn-group .btn {
    border-color: var(--border);
}
.btn-group .btn + .btn {
    border-left-color: var(--border);
}
.btn-group .btn.active, .btn-group .btn:active {
    background: var(--accent-subtle);
    color: var(--accent-light);
}

/* --- Forms --- */
.form-control, .form-select {
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    color: var(--text-primary);
    border-radius: var(--radius-sm);
    padding: 0.6rem 0.875rem;
    font-size: 0.875rem;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.form-control:focus, .form-select:focus {
    background: var(--bg-tertiary);
    border-color: var(--accent);
    color: var(--text-primary);
    box-shadow: 0 0 0 3px var(--accent-subtle);
}
.form-control::placeholder { color: var(--text-tertiary); }
.form-label { color: var(--text-secondary); font-size: 0.8rem; font-weight: 500; text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 0.4rem; }
.form-text { color: var(--text-tertiary); font-size: 0.75rem; }
.form-check-input { background-color: var(--bg-tertiary); border-color: var(--border); }
.form-check-input:checked { background-color: var(--accent); border-color: var(--accent); }
.form-check-label { color: var(--text-secondary); }

/* Fix native select dropdown options for dark mode */
.form-select option,
.form-select optgroup {
    background: var(--bg-secondary);
    color: var(--text-primary);
}
.form-select optgroup {
    font-weight: 600;
}

/* Ensure text colors are properly inherited */
.text-body { color: var(--text-primary) !important; }
.text-body-secondary { color: var(--text-secondary) !important; }
.text-body-tertiary { color: var(--text-tertiary) !important; }
input, textarea, select { color: var(--text-primary); }
input::placeholder, textarea::placeholder { color: var(--text-tertiary); }

.form-range::-webkit-slider-runnable-track { background: var(--bg-tertiary); border-radius: 4px; height: 6px; }
.form-range::-webkit-slider-thumb { background: var(--accent); border: none; }
.form-range::-webkit-slider-thumb:hover { background: var(--accent-light); }

/* --- Cards --- */
.card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-med), box-shadow var(--transition-med), transform var(--transition-med);
    overflow: hidden;
}
.card:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-sm);
}
.card-header {
    background: var(--bg-glass);
    border-bottom: 1px solid var(--border);
    padding: 1rem 1.25rem;
    font-weight: 600;
    font-size: 0.9rem;
}
.card-body { padding: 1.25rem; }
.card-footer {
    background: transparent;
    border-top: 1px solid var(--border);
    padding: 0.875rem 1.25rem;
}

/* --- Badges --- */
.badge {
    font-weight: 500;
    font-size: 0.7rem;
    padding: 0.3em 0.65em;
    border-radius: 6px;
    letter-spacing: 0.03em;
    text-transform: uppercase;
}
.badge.bg-success, .bg-success { background: var(--success-subtle) !important; color: var(--success) !important; }
.badge.bg-warning, .bg-warning { background: var(--warning-subtle) !important; color: var(--warning) !important; }
.badge.bg-danger, .bg-danger { background: var(--danger-subtle) !important; color: var(--danger) !important; }
.badge.bg-primary, .badge.bg-info { background: var(--accent-subtle) !important; color: var(--accent-light) !important; }
.badge.bg-secondary { background: var(--bg-glass-hover) !important; color: var(--text-secondary) !important; }
.badge.bg-dark { background: rgba(255,255,255,0.08) !important; color: var(--text-primary) !important; }

/* --- Alerts --- */
.alert { border-radius: var(--radius-md); border: 1px solid var(--border); font-size: 0.875rem; }
.alert-info { background: var(--accent-subtle); border-color: var(--border-accent); color: var(--accent-light); }
.alert-warning { background: var(--warning-subtle); border-color: rgba(253,203,110,0.2); color: var(--warning); }
.alert-danger { background: var(--danger-subtle); border-color: rgba(255,107,107,0.2); color: var(--danger); }
.alert-link { color: var(--accent-light) !important; text-decoration: underline; }

/* --- Modals --- */
.modal-content {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}
.modal-header {
    border-bottom: 1px solid var(--border);
    padding: 1.25rem 1.5rem;
}
.modal-title { font-weight: 600; color: var(--text-primary); }
.modal-body { padding: 1.5rem; color: var(--text-primary); }
.modal-body p, .modal-body span, .modal-body strong, .modal-body div {
    color: var(--text-primary);
}
.modal-body .text-muted {
    color: var(--text-secondary) !important;
}
.modal-footer { border-top: 1px solid var(--border); padding: 1rem 1.5rem; }
.modal-backdrop.show { opacity: 0.7; backdrop-filter: blur(4px); }
.btn-close { filter: invert(1) grayscale(100%) brightness(200%); }
[data-theme="light"] .btn-close { filter: none; }

/* --- Toasts --- */
.toast {
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    backdrop-filter: blur(12px);
    box-shadow: var(--shadow-md);
}

/* --- Tables --- */
.table { color: var(--text-primary); }
.table > :not(caption) > * > * { background: transparent; border-bottom-color: var(--border); padding: 0.875rem; }
.table-hover > tbody > tr:hover > * { background: var(--bg-glass-hover); }
.table thead th { color: var(--text-secondary); font-size: 0.75rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; border-bottom: 1px solid var(--border); }

/* --- List Groups --- */
.list-group-item {
    background: transparent;
    border-color: var(--border);
    color: var(--text-primary);
    padding: 0.75rem 1rem;
    font-size: 0.875rem;
}
.list-group-item span,
.list-group-item .small {
    color: var(--text-primary);
}
.list-group-item-action:hover { background: var(--bg-glass-hover); color: var(--text-primary); }
.list-group-item-action:hover span,
.list-group-item-action:hover .small { color: var(--text-primary); }
.list-group-item.active { background: var(--accent-subtle); border-color: var(--border-accent); color: var(--accent-light); }
.list-group-item.active span,
.list-group-item.active .small { color: var(--accent-light); }

/* --- Spinners --- */
.spinner-border { color: var(--accent) !important; }

/* --- Accordion (form-switch) --- */
.form-switch .form-check-input { background-color: var(--bg-tertiary); border-color: var(--border); }
.form-switch .form-check-input:checked { background-color: var(--accent); border-color: var(--accent); }

/* --- Misc Bootstrap --- */
.bg-light {
    background: var(--bg-tertiary) !important;
    color: var(--text-primary) !important;
}
.bg-light *, .bg-light p, .bg-light span, .bg-light div {
    color: var(--text-primary);
}
.bg-dark { background: var(--bg-primary) !important; }
.border-bottom { border-color: var(--border) !important; }
hr { border-color: var(--border); opacity: 0.5; }
pre { color: var(--text-primary); font-family: var(--font-mono); font-size: 0.8rem; }

/* ========================================= */
/* ---------- Component Styles ---------- */
/* ========================================= */

/* ---------- Navbar ---------- */
#navbar-container {
    position: sticky;
    top: 0;
    z-index: 1000;
}

.app-navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.5rem;
    height: 60px;
    background: var(--navbar-bg);
    backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--border);
}
.app-navbar .navbar-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 700;
    font-size: 1rem;
    letter-spacing: -0.01em;
    color: var(--text-primary);
    text-decoration: none;
}
.app-navbar .brand-icon {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-subtle);
    border: 1px solid var(--border-accent);
    border-radius: var(--radius-sm);
}
.app-navbar .brand-icon i {
    font-size: 1.1rem;
    color: var(--accent-light);
}
.navbar-user {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}
.navbar-user .user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    overflow: hidden;
    background: var(--bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border);
}
.navbar-user .user-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.navbar-user .user-avatar i {
    font-size: 0.875rem;
    color: var(--text-tertiary);
}
.navbar-user .user-name {
    font-size: 0.875rem;
    color: var(--text-secondary);
    max-width: 150px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.btn-icon {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}
.btn-icon:hover {
    background: var(--bg-glass-hover);
    border-color: var(--border-hover);
    color: var(--text-primary);
}
.theme-toggle {
    font-size: 1.1rem;
}
.theme-toggle .bi-sun { display: none; }
.theme-toggle .bi-moon { display: block; }
[data-theme="light"] .theme-toggle .bi-sun { display: block; }
[data-theme="light"] .theme-toggle .bi-moon { display: none; }
@media (max-width: 768px) {
    .navbar-user .user-name { display: none; }
}

/* ---------- Login Page ---------- */
.login-hero {
    min-height: 100vh;
    background: var(--bg-primary);
    position: relative;
    overflow: hidden;
}
.login-hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 30% 40%, rgba(108, 92, 231, 0.08) 0%, transparent 50%),
                radial-gradient(circle at 70% 60%, rgba(0, 206, 201, 0.06) 0%, transparent 40%),
                radial-gradient(circle at 50% 50%, rgba(162, 155, 254, 0.04) 0%, transparent 60%);
    animation: subtleShift 20s ease-in-out infinite alternate;
}
@keyframes subtleShift {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(-2%, 2%) scale(1.05); }
}
.login-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    position: relative;
    z-index: 1;
}
.login-card h1 { font-size: 1.75rem; }

/* ---------- Studio Layout ---------- */
.studio-layout {
    display: flex;
    height: calc(100vh - 60px);
}
.studio-sidebar {
    width: 240px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    position: sticky;
    top: 60px;
    height: calc(100vh - 60px);
    overflow-y: auto;
}
.sidebar-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 0.875rem;
}
.sidebar-header .bot-avatar {
    width: 44px;
    height: 44px;
    background: var(--accent-subtle);
    border: 1px solid var(--border-accent);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.sidebar-header .bot-avatar i {
    font-size: 1.25rem;
    color: var(--accent-light);
}
.sidebar-header .bot-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.sidebar-header .bot-details h4 {
    font-size: 0.95rem;
    font-weight: 600;
    margin: 0 0 0.125rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.sidebar-header .bot-details p {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    margin: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 140px;
}
/* Inline editable fields in sidebar */
.sidebar-header .editable {
    cursor: pointer;
    border-radius: var(--radius-sm);
    padding: 1px 4px;
    margin-left: -4px;
    transition: background 0.15s;
}
.sidebar-header .editable:hover {
    background: var(--bg-glass-hover);
}
.sidebar-inline-input {
    width: 100%;
    background: var(--bg-tertiary);
    border: 1px solid var(--accent);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.95rem;
    font-weight: 600;
    padding: 1px 4px;
    outline: none;
}
.sidebar-inline-input-sm {
    font-size: 0.75rem;
    font-weight: 400;
}
.sidebar-nav {
    padding: 1rem 0.75rem;
    flex: 1;
}
.sidebar-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.7rem 1rem;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    text-decoration: none;
    transition: all var(--transition-fast);
    margin-bottom: 0.25rem;
}
.sidebar-link i {
    font-size: 1.1rem;
    width: 1.25rem;
    text-align: center;
}
.sidebar-link:hover {
    background: var(--bg-glass-hover);
    color: var(--text-primary);
}
.sidebar-link.active {
    background: var(--accent);
    color: white;
    box-shadow: var(--shadow-glow);
}
.sidebar-link.active i {
    color: white;
}
.sidebar-footer {
    padding: 0.75rem;
    border-top: 1px solid var(--border);
}
.sidebar-footer .back-link {
    color: var(--text-tertiary);
}
.sidebar-footer .back-link:hover {
    color: var(--text-primary);
    background: var(--bg-glass-hover);
}
.studio-content {
    flex: 1;
    padding: 2rem;
    min-width: 0;
    min-height: 0;
    overflow-y: auto;
    background: var(--bg-primary);
}
@media (max-width: 992px) {
    .studio-layout { flex-direction: column; }
    .studio-sidebar {
        width: 100%;
        height: auto;
        position: relative;
        top: 0;
        flex-direction: row;
        flex-wrap: wrap;
        border-right: none;
        border-bottom: 1px solid var(--border);
    }
    .sidebar-header { border-bottom: none; padding: 1rem; }
    .sidebar-nav { display: flex; gap: 0.5rem; padding: 0.5rem 1rem; overflow-x: auto; }
    .sidebar-link { margin-bottom: 0; white-space: nowrap; }
    .sidebar-footer { display: none; }
    .studio-content { padding: 1.5rem; }
}

/* ---------- Empty States ---------- */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 4rem 2rem;
}
.empty-state-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}
.empty-state-icon i {
    font-size: 2rem;
    color: var(--text-tertiary);
}
.empty-state h4 {
    color: var(--text-primary);
    font-weight: 600;
    font-size: 1.125rem;
    margin: 0 0 0.5rem;
}
.empty-state p {
    color: var(--text-secondary);
    max-width: 400px;
    margin: 0 auto 1.5rem;
    font-size: 0.875rem;
    line-height: 1.6;
}

/* ---------- Source Cards ---------- */
.source-card:hover {
    border-color: var(--border-accent);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* ---------- Chunk Viewer ---------- */
.chunk-map { max-height: 450px; overflow-y: auto; }
.chunk-map .chunk {
    padding: 0.75rem;
    border-left: 3px solid var(--accent);
    margin-bottom: 0.5rem;
    background: var(--bg-tertiary);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    cursor: pointer;
    transition: background var(--transition-fast), border-color var(--transition-fast), opacity var(--transition-fast);
    position: relative;
}
.chunk-map .chunk:hover { background: var(--bg-glass-hover); }
.chunk-map .chunk.excluded {
    border-left-color: var(--danger);
    opacity: 0.4;
    background: var(--danger-subtle);
}
.chunk-map .chunk.excluded::after {
    content: 'EXCLUDED';
    position: absolute;
    top: 4px;
    right: 8px;
    font-size: 9px;
    font-weight: 600;
    color: var(--danger);
    background: var(--danger-subtle);
    padding: 2px 6px;
    border-radius: 4px;
}
.chunk-map .chunk.keep-together {
    border-left-color: var(--success);
    background: var(--success-subtle);
}
.chunk-map .chunk.keep-together::after {
    content: 'LINKED';
    position: absolute;
    top: 4px;
    right: 8px;
    font-size: 9px;
    font-weight: 600;
    color: var(--success);
    background: var(--success-subtle);
    padding: 2px 6px;
    border-radius: 4px;
}
.chunk-legend {
    display: flex;
    gap: 1rem;
    margin-bottom: 0.75rem;
    font-size: 0.75rem;
}
.chunk-legend-item {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    color: var(--text-secondary);
}
.chunk-legend-item .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}
.chunk-legend-item .dot.normal { background: var(--accent); }
.chunk-legend-item .dot.linked { background: var(--success); }
.chunk-legend-item .dot.excluded { background: var(--danger); }

/* Chunk editor mode */
.chunk-editor {
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
}
.chunk-editor-toolbar {
    padding: 0.5rem 0.75rem;
    border-bottom: 1px solid var(--border);
    background: var(--bg-tertiary);
    border-radius: var(--radius-md) var(--radius-md) 0 0;
}
.chunk-editor-content {
    max-height: 350px;
    overflow-y: auto;
    padding: 0.5rem;
}
.chunk-editor-footer {
    padding: 0.5rem 0.75rem;
    border-top: 1px solid var(--border);
    background: var(--bg-tertiary);
    border-radius: 0 0 var(--radius-md) var(--radius-md);
}
.chunk-paragraph {
    padding: 0.5rem 0.75rem;
    white-space: pre-wrap;
    font-size: 0.85rem;
    line-height: 1.5;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    margin: 0.25rem 0;
}
.chunk-divider {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.35rem 0;
    opacity: 0.5;
    transition: opacity var(--transition-fast);
}
.chunk-divider:hover {
    opacity: 1;
}
.divider-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.25rem 0.5rem;
    font-size: 0.7rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-secondary);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}
.divider-btn.split-at-btn:hover {
    background: var(--accent-subtle);
    border-color: var(--accent);
    color: var(--accent);
}
.divider-btn.merge-at-btn:hover {
    background: var(--warning-subtle);
    border-color: var(--warning);
    color: var(--warning);
}

/* ---------- Q&A Pairs ---------- */
.pair-card {
    transition: transform var(--transition-med), opacity var(--transition-med);
}
.pair-card:hover {
    border-color: var(--border-hover);
}
.pair-card.swiping-right {
    transform: translateX(100px) rotate(5deg);
    opacity: 0;
}
.pair-card.swiping-left {
    transform: translateX(-100px) rotate(-5deg);
    opacity: 0;
}
.pair-review-stack { position: relative; min-height: 300px; }
.pair-review-stack .pair-card { position: absolute; top: 0; left: 0; right: 0; }

.pair-stats .stat-number {
    font-size: 2rem;
    font-weight: 700;
    line-height: 1;
    letter-spacing: -0.03em;
}
.stat-number.text-success { color: var(--success) !important; }
.stat-number.text-warning { color: var(--warning) !important; }
.stat-number.text-info { color: var(--info) !important; }

/* ---------- Admin Library ---------- */
.admin-library-page {
    padding: 2rem;
    max-width: 1400px;
    margin: 0 auto;
}
.library-admin-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    transition: all var(--transition-fast);
}
.library-admin-card:hover {
    border-color: var(--border-hover);
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.tag-badge { cursor: pointer; transition: all var(--transition-fast); }
.tag-badge:hover { opacity: 0.8; transform: scale(1.05); }

/* ---------- Q&A Pairs Stack View ---------- */
.pairs-stack-container {
    padding: 1rem 0;
}
.pairs-stack {
    position: relative;
    min-height: 350px;
    perspective: 1000px;
}
.pair-stack-card {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}
.pair-stack-card.stack-position-0 {
    transform: translateY(0) scale(1);
    z-index: 3;
    opacity: 1;
}
.pair-stack-card.stack-position-1 {
    transform: translateY(16px) scale(0.97);
    z-index: 2;
    opacity: 0.7;
    pointer-events: none;
}
.pair-stack-card.stack-position-2 {
    transform: translateY(32px) scale(0.94);
    z-index: 1;
    opacity: 0.5;
    pointer-events: none;
}
.stack-progress {
    font-size: 0.85rem;
}

/* ---------- Persona Tuning ---------- */
.tuning-slider {
    margin-bottom: 1.75rem;
    padding: 0 0.5rem;
}
.tuning-slider .labels {
    display: flex;
    justify-content: space-between;
    font-size: 0.7rem;
    color: var(--text-tertiary);
    margin-top: 0.25rem;
}
.voice-preview {
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 1.25rem;
    font-style: italic;
    min-height: 140px;
    transition: all var(--transition-slow);
    color: var(--text-secondary);
    line-height: 1.7;
}
.sample-card {
    border-left: 3px solid var(--accent) !important;
    background: var(--bg-tertiary) !important;
}
.sample-card.writing { border-left-color: var(--success) !important; }
.sample-card.email { border-left-color: var(--warning) !important; }
.sample-card.transcript { border-left-color: var(--accent-light) !important; }

/* ---------- Chat / Lab ---------- */
.chat-messages {
    height: 500px;
    overflow-y: auto;
    scroll-behavior: smooth;
    padding: 1.25rem;
    background: var(--bg-primary);
}
.chat-bubble {
    max-width: 80%;
    padding: 0.875rem 1.125rem;
    border-radius: var(--radius-lg);
    word-wrap: break-word;
    line-height: 1.6;
    font-size: 0.9rem;
}
.chat-bubble.user {
    background: var(--accent);
    color: white;
    border-bottom-right-radius: 4px;
}
.chat-bubble.assistant {
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-bottom-left-radius: 4px;
    color: var(--text-primary);
}
.chat-bubble .citation {
    font-size: 0.7rem;
    color: var(--text-tertiary);
    border-top: 1px solid var(--border);
    margin-top: 0.75rem;
    padding-top: 0.5rem;
}

.scenario-card {
    cursor: pointer;
    transition: all var(--transition-fast);
}
.scenario-card:hover {
    border-color: var(--border-accent) !important;
    background: var(--accent-subtle);
}
.scenario-card.active {
    border-color: var(--accent) !important;
    background: var(--accent-subtle);
}

/* ---------- A/B Testing ---------- */
.ab-panel {
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 1rem;
    background: var(--bg-glass);
}
.ab-panel.variant-a { border-color: var(--accent); }
.ab-panel.variant-b { border-color: var(--success); }

/* ---------- Memory Page ---------- */
.memory-item {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border);
}
.memory-item:last-child { border-bottom: none; }

.memory-toggle-card {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.625rem 1rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
}
.toggle-label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
}
.toggle-switch {
    position: relative;
    width: 44px;
    height: 24px;
    cursor: pointer;
}
.toggle-switch input { opacity: 0; width: 0; height: 0; }
.toggle-slider {
    position: absolute;
    inset: 0;
    background: var(--bg-tertiary);
    border-radius: 12px;
    border: 1px solid var(--border);
    transition: all var(--transition-fast);
}
.toggle-slider::before {
    content: '';
    position: absolute;
    width: 18px;
    height: 18px;
    left: 2px;
    bottom: 2px;
    background: var(--text-secondary);
    border-radius: 50%;
    transition: all var(--transition-fast);
}
.toggle-switch input:checked + .toggle-slider {
    background: var(--accent);
    border-color: var(--accent);
}
.toggle-switch input:checked + .toggle-slider::before {
    transform: translateX(20px);
    background: white;
}

/* ---------- Diagnosis Panel ---------- */
.diagnosis-card {
    border-left: 3px solid var(--warning);
    background: var(--bg-tertiary);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}
.diagnosis-card.suggestion { border-left-color: var(--accent); }
.diagnosis-card.warning { border-left-color: var(--danger); }
.diagnosis-card .apply-action-btn { font-size: 0.75rem; padding: 0.2rem 0.5rem; }
.diagnosis-card .apply-action-btn.applied { pointer-events: none; }

/* Overridden response in lab */
.overridden-response {
    border-left: 3px solid var(--success) !important;
    position: relative;
}
.override-label {
    font-size: 0.7rem;
    color: var(--success);
    margin-top: 0.375rem;
    font-weight: 500;
}

/* Lab session list items */
.lab-session-item {
    background: var(--bg-tertiary);
    border-color: var(--border);
    color: var(--text-primary);
    padding: 0.5rem 0.75rem;
}
.lab-session-item:hover { background: var(--bg-glass-hover); }
.lab-session-item.active {
    background: var(--accent-subtle);
    border-color: var(--border-accent);
}

/* ---------- Library Cards ---------- */
.library-card {
    cursor: pointer;
    transition: all var(--transition-fast);
    background: var(--bg-tertiary) !important;
}
.library-card:hover {
    border-color: var(--border-accent) !important;
    background: var(--bg-glass-hover) !important;
}
.library-card.selected {
    border-color: var(--success) !important;
    background: var(--success-subtle) !important;
}

/* ---------- Progress Ring ---------- */
.progress-ring { width: 48px; height: 48px; }
.progress-ring circle {
    transition: stroke-dashoffset var(--transition-slow);
    transform: rotate(-90deg);
    transform-origin: 50% 50%;
}
.progress-ring circle:first-child { stroke: var(--bg-tertiary); }
.progress-ring circle:last-child { stroke: var(--accent); }

/* ---------- Animations ---------- */
.fade-in {
    animation: fadeIn var(--transition-slow) ease-out;
}
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: none; }
}
.slide-in {
    animation: slideIn var(--transition-med) ease-out;
}
@keyframes slideIn {
    from { transform: translateX(-12px); opacity: 0; }
    to { transform: none; opacity: 1; }
}

/* ---------- Utility ---------- */
.cursor-pointer { cursor: pointer; }
.text-truncate-2 { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.text-truncate-3 { display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.text-accent { color: var(--accent-light) !important; }
.bg-glass { background: var(--bg-glass); }
.border-accent { border-color: var(--border-accent) !important; }

/* ---------- Page Headers ---------- */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1.5rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}
.page-header-content h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin: 0 0 0.375rem;
    letter-spacing: -0.02em;
}
.page-header-content p {
    margin: 0;
    font-size: 0.875rem;
}
.page-header-actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

/* ---------- Stats Grid ---------- */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}
.stats-grid.stats-grid-4 {
    grid-template-columns: repeat(4, 1fr);
}
.stat-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    transition: all var(--transition-fast);
}
.stat-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-2px);
}
.stat-card .stat-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    background: var(--bg-glass-hover);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 0.75rem;
}
.stat-card .stat-icon i {
    font-size: 1.1rem;
    color: var(--text-secondary);
}
.stat-card .stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1;
    color: var(--text-primary);
}
.stat-card .stat-label {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    margin-top: 0.375rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.stat-card.success .stat-icon { background: var(--success-subtle); }
.stat-card.success .stat-icon i { color: var(--success); }
.stat-card.success .stat-value { color: var(--success); }
.stat-card.warning .stat-icon { background: var(--warning-subtle); }
.stat-card.warning .stat-icon i { color: var(--warning); }
.stat-card.warning .stat-value { color: var(--warning); }
.stat-card.accent .stat-icon { background: var(--accent-subtle); }
.stat-card.accent .stat-icon i { color: var(--accent-light); }
.stat-card.accent .stat-value { color: var(--accent-light); }

/* ---------- Filter Bar ---------- */
.filter-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}
.filter-pills {
    display: flex;
    gap: 0.375rem;
}
.filter-pill {
    padding: 0.4rem 0.875rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    background: var(--bg-glass);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}
.filter-pill:hover {
    background: var(--bg-glass-hover);
    border-color: var(--border-hover);
    color: var(--text-primary);
}
.filter-pill.active {
    background: var(--accent-subtle);
    border-color: var(--border-accent);
    color: var(--accent-light);
}
.filter-pill.success.active { background: var(--success-subtle); border-color: rgba(0, 206, 201, 0.3); color: var(--success); }
.filter-pill.warning.active { background: var(--warning-subtle); border-color: rgba(253, 203, 110, 0.3); color: var(--warning); }
.filter-pill.danger.active { background: var(--danger-subtle); border-color: rgba(255, 107, 107, 0.3); color: var(--danger); }

/* ---------- Coverage Grid ---------- */
.coverage-category {
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border);
}
.coverage-category:last-child {
    border-bottom: none;
    padding-bottom: 0;
}
.coverage-topics {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}
.topic-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.375rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 500;
    border: 1px solid var(--border);
    cursor: pointer;
    transition: all var(--transition-fast);
    background: var(--bg-glass);
    color: var(--text-primary);
}
.topic-chip:hover {
    background: var(--bg-glass-hover);
    border-color: var(--border-hover);
}
.topic-chip .topic-name {
    max-width: 180px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.topic-chip .topic-count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 20px;
    height: 20px;
    padding: 0 0.375rem;
    border-radius: 10px;
    font-size: 0.65rem;
    font-weight: 600;
}
.topic-chip.coverage-none {
    border-color: rgba(255, 107, 107, 0.3);
}
.topic-chip.coverage-none .topic-count {
    background: var(--danger-subtle);
    color: var(--danger);
}
.topic-chip.coverage-low {
    border-color: rgba(253, 203, 110, 0.3);
}
.topic-chip.coverage-low .topic-count {
    background: var(--warning-subtle);
    color: var(--warning);
}
.topic-chip.coverage-good {
    border-color: rgba(0, 206, 201, 0.3);
}
.topic-chip.coverage-good .topic-count {
    background: var(--success-subtle);
    color: var(--success);
}

/* ---------- Page-level Layout ---------- */
#app > .container, #app > .container-fluid { padding-top: 2rem; padding-bottom: 2rem; }

/* ---------- How This Works Page ---------- */
.how-it-works-page {
    max-width: 900px;
    margin: 0 auto;
    padding: 2rem;
}

.pipeline-overview {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 2rem;
}

.pipeline-flow {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.pipeline-node {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem;
}

.pipeline-node .node-icon {
    width: 56px;
    height: 56px;
    background: var(--accent-subtle);
    border: 1px solid var(--border-accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.pipeline-node .node-icon i {
    font-size: 1.5rem;
    color: var(--accent-light);
}

.pipeline-node span {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.pipeline-arrow {
    color: var(--text-tertiary);
    font-size: 1.25rem;
}

.pipeline-stages {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.pipeline-stage {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
    padding: 1.5rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    position: relative;
}

.stage-number {
    position: absolute;
    top: -12px;
    left: -12px;
    width: 28px;
    height: 28px;
    background: var(--accent);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.85rem;
}

.stage-icon {
    width: 56px;
    height: 56px;
    background: var(--accent-subtle);
    border: 1px solid var(--border-accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.stage-icon i {
    font-size: 1.5rem;
    color: var(--accent-light);
}

.stage-content h5 {
    margin: 0 0 0.5rem;
    font-weight: 600;
}

.stage-content p {
    margin: 0 0 0.75rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
}

.stage-example {
    font-size: 0.85rem;
    color: var(--text-tertiary);
    padding: 0.5rem 0.75rem;
    background: var(--bg-glass);
    border-radius: var(--radius-sm);
}

@media (max-width: 768px) {
    .how-it-works-page { padding: 1rem; }
    .pipeline-stage {
        flex-direction: column;
        text-align: center;
    }
    .stage-icon {
        margin: 0 auto;
    }
    .stage-number {
        left: 50%;
        transform: translateX(-50%);
    }
}

/* ---------- Responsive ---------- */
@media (max-width: 992px) {
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .stats-grid.stats-grid-4 { grid-template-columns: repeat(2, 1fr); }
    .page-header { flex-direction: column; align-items: stretch; }
    .page-header-actions { justify-content: flex-start; }
}
@media (max-width: 768px) {
    .chat-messages { height: 350px; }
    h2 { font-size: 1.35rem; }
    h3 { font-size: 1.2rem; }
    .btn-group { flex-wrap: wrap; gap: 0.25rem; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .filter-bar { flex-direction: column; align-items: stretch; }
    .filter-pills { overflow-x: auto; padding-bottom: 0.5rem; }
    .navbar-user .user-name { display: none; }
}

/* ---------- Doc Library Page ---------- */
.studio-content:has(.library-layout) {
    padding: 0;
}
.library-layout {
    display: flex;
    height: calc(100vh - 60px);
    gap: 0;
}
.library-sidebar {
    width: 240px;
    min-width: 240px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    transition: width var(--transition-med), min-width var(--transition-med);
}
.library-sidebar.collapsed {
    width: 48px;
    min-width: 48px;
}
.library-sidebar.collapsed .library-sidebar-header h6,
.library-sidebar.collapsed .library-search-wrap,
.library-sidebar.collapsed .library-doc-list {
    display: none;
}
.library-sidebar.collapsed .library-sidebar-header {
    justify-content: center;
    padding: 0.75rem 0;
}
.library-sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border);
}
.library-sidebar-header h6 {
    margin: 0;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.library-sidebar-header .collapse-btn {
    padding: 0.25rem 0.5rem;
    color: var(--text-tertiary);
}
.library-sidebar-header .collapse-btn:hover {
    color: var(--text-primary);
    background: var(--bg-glass-hover);
}
.library-search-wrap {
    position: relative;
    padding: 0.5rem;
    border-bottom: 1px solid var(--border);
}
.library-search-icon {
    position: absolute;
    left: 0.9rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-tertiary);
    font-size: 0.75rem;
    pointer-events: none;
}
.library-search-input {
    width: 100%;
    padding: 0.35rem 0.5rem 0.35rem 1.8rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 0.8rem;
    outline: none;
}
.library-search-input:focus {
    border-color: var(--accent);
}
.library-resize-handle {
    width: 4px;
    cursor: col-resize;
    background: transparent;
    transition: background var(--transition-fast);
    flex-shrink: 0;
}
.library-resize-handle:hover,
.library-resize-handle:active {
    background: var(--accent);
}
.library-doc-list {
    flex: 1;
    overflow-y: auto;
    padding: 0.5rem;
}
.library-doc-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    width: 100%;
    padding: 0.625rem 0.75rem;
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 0.85rem;
    text-align: left;
    cursor: pointer;
    transition: all var(--transition-fast);
}
.library-doc-item:hover {
    background: var(--bg-glass-hover);
    color: var(--text-primary);
}
.library-doc-item.active {
    background: var(--accent-subtle);
    color: var(--accent-light);
}
.library-doc-item .doc-name {
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.library-doc-item .badge {
    font-size: 0.65rem;
    padding: 0.15rem 0.4rem;
}
.library-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
}
.library-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1.25rem;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
}
.library-toolbar h5 {
    font-size: 1rem;
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.library-viewer {
    flex: 1;
    overflow-y: auto;
    padding: 1rem 0.75rem;
    background: var(--bg-primary);
}
.library-viewer .empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--text-tertiary);
}
.library-viewer .empty-state i {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}
.library-viewer .rendered-content {
    max-width: none;
    margin: 0;
    line-height: 1.7;
    color: var(--text-primary);
}
.library-viewer .rendered-content h1,
.library-viewer .rendered-content h2,
.library-viewer .rendered-content h3,
.library-viewer .rendered-content h4 {
    margin-top: 1.5em;
    margin-bottom: 0.5em;
    color: var(--text-primary);
}
.library-viewer .rendered-content h1 { font-size: 1.75rem; }
.library-viewer .rendered-content h2 { font-size: 1.5rem; }
.library-viewer .rendered-content h3 { font-size: 1.25rem; }
.library-viewer .rendered-content p {
    margin-bottom: 1em;
}
.library-viewer .rendered-content ul,
.library-viewer .rendered-content ol {
    margin-bottom: 1em;
    padding-left: 1.5em;
}
.library-viewer .rendered-content li {
    margin-bottom: 0.25em;
}
.library-viewer .rendered-content code {
    background: var(--bg-tertiary);
    padding: 0.15em 0.4em;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.9em;
}
.library-viewer .rendered-content pre {
    background: var(--bg-tertiary);
    padding: 1rem;
    border-radius: var(--radius-sm);
    overflow-x: auto;
    margin-bottom: 1em;
}
.library-viewer .rendered-content pre code {
    background: none;
    padding: 0;
}
.library-viewer .rendered-content blockquote {
    border-left: 3px solid var(--accent);
    padding-left: 1rem;
    margin-left: 0;
    color: var(--text-secondary);
    font-style: italic;
}
.library-viewer .rendered-content hr {
    border: none;
    border-top: 1px solid var(--border);
    margin: 2em 0;
}
.library-viewer .markdown-source {
    max-width: none;
    margin: 0;
    padding: 0.75rem;
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    line-height: 1.6;
    white-space: pre-wrap;
    word-break: break-word;
    color: var(--text-secondary);
}

/* ---------- Detail Modals (Pairs & Sources) ---------- */
.pair-detail-modal,
.pair-detail,
.source-detail-modal {
    font-size: 0.9rem;
}
.detail-section {
    margin-bottom: 1.25rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border);
}
.detail-section:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}
.detail-section h6 {
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
}
.detail-section h6 i {
    color: var(--accent);
}
.detail-section .table {
    margin-bottom: 0;
    --bs-table-bg: transparent;
}
.detail-section .table td {
    padding: 0.4rem 0.75rem;
    border-color: var(--border);
    vertical-align: middle;
}
.detail-section .table td:first-child {
    width: 40%;
    color: var(--text-secondary);
}
.detail-section code {
    background: var(--bg-tertiary);
    padding: 0.25em 0.5em;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.85em;
    word-break: break-all;
}
.detail-section .tag-chip {
    display: inline-block;
    padding: 0.2em 0.6em;
    margin: 0.15em;
    background: var(--accent-subtle);
    border: 1px solid var(--border-accent);
    border-radius: 12px;
    font-size: 0.85em;
    color: var(--accent-light);
}
.source-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem 0.5rem;
}
.source-meta span {
    display: inline-flex;
    align-items: center;
}

/* ---------- Chunk Stats Bar ---------- */
.chunk-stats-bar {
    display: flex;
    gap: 1rem;
    padding: 0.75rem 1rem;
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    flex-wrap: wrap;
}
.chunk-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 50px;
}
.chunk-stat-value {
    font-weight: 600;
    font-size: 1.1rem;
}
.chunk-stat-label {
    font-size: 0.7rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

/* ---------- Card Loading Overlay ---------- */
.card-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-secondary);
    opacity: 0.97;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    z-index: 10;
    border-radius: inherit;
    animation: overlay-fade-in 0.2s ease;
}
.card-overlay.error {
    background: var(--danger-subtle);
}
.card-overlay .spinner-border {
    width: 2rem;
    height: 2rem;
    color: var(--accent);
}
.card-overlay-text {
    font-weight: 500;
    color: var(--text-primary);
}
.card-overlay-subtext {
    font-size: 0.85rem;
    color: var(--text-secondary);
}
.card-overlay.fade-out {
    animation: overlay-fade-out 0.3s ease forwards;
}
@keyframes overlay-fade-in {
    from { opacity: 0; }
    to { opacity: 0.97; }
}
@keyframes overlay-fade-out {
    from { opacity: 0.97; }
    to { opacity: 0; }
}

/* Card needs position relative for overlay */
.card {
    position: relative;
}

/* ---------- Shimmer Loading Effect ---------- */
.shimmer {
    background: linear-gradient(
        90deg,
        var(--bg-tertiary) 25%,
        var(--bg-glass-hover) 50%,
        var(--bg-tertiary) 75%
    );
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--radius-sm);
}
@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}
.shimmer-text {
    height: 1em;
    width: 80%;
    margin-bottom: 0.5em;
}
.shimmer-block {
    height: 4rem;
    width: 100%;
}

/* ---------- Fade Animations ---------- */
.fade-in {
    animation: fade-in 0.3s ease forwards;
}
.fade-out {
    animation: fade-out 0.3s ease forwards;
}
.slide-fade-in {
    animation: slide-fade-in 0.3s ease forwards;
}
.slide-fade-out {
    animation: slide-fade-out 0.3s ease forwards;
}
@keyframes fade-in {
    from { opacity: 0; }
    to { opacity: 1; }
}
@keyframes fade-out {
    from { opacity: 1; }
    to { opacity: 0; }
}
@keyframes slide-fade-in {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes slide-fade-out {
    from { opacity: 1; transform: translateY(0); }
    to { opacity: 0; transform: translateY(10px); }
}

/* ---------- Button Success Flash ---------- */
.btn-success-flash {
    background-color: var(--success) !important;
    border-color: var(--success) !important;
    color: white !important;
    transition: all 0.3s ease;
}

/* ---------- Voice Preview Styles ---------- */
.voice-preview {
    min-height: 80px;
    padding: 1rem;
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    border-left: 3px solid var(--accent);
}
.voice-preview.loading {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}
.voice-preview .shimmer-line {
    height: 0.875rem;
    border-radius: 4px;
}
.voice-preview .shimmer-line:nth-child(1) { width: 95%; }
.voice-preview .shimmer-line:nth-child(2) { width: 88%; }
.voice-preview .shimmer-line:nth-child(3) { width: 75%; }

/* ---------- Sample Card Animations ---------- */
.sample-card {
    transition: all 0.3s ease;
}
.sample-card.deleting {
    opacity: 0.5;
    pointer-events: none;
}
.sample-card.new {
    animation: slide-fade-in 0.3s ease;
}

/* ========================================
   Knowledge Graph Explorer Styles
   ======================================== */

/* Main container with sidebar */
.studio-content:has(.knowledge-graph-container) {
    display: flex;
    flex-direction: column;
    overflow: hidden;
}
.studio-content:has(.knowledge-graph-container) #tab-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 0;
}
.knowledge-graph-container {
    position: relative;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    flex: 1;
    min-height: 0;
    max-width: 100%;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.knowledge-graph-container:fullscreen,
.knowledge-graph-container:-webkit-full-screen {
    border-radius: 0;
    border: none;
    min-height: 100vh;
    background: var(--bg-primary);
}

/* Graph stats bar */
.graph-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    padding: 1rem;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md) var(--radius-md) 0 0;
    border-bottom: 1px solid var(--border);
}

.stat-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.35rem 0.75rem;
    background: var(--bg-primary);
    border-radius: 999px;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.stat-pill strong {
    color: var(--text-primary);
}

/* Graph Search */
.graph-search-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.graph-search-icon {
    position: absolute;
    left: 10px;
    color: var(--text-tertiary);
    font-size: 0.8rem;
    pointer-events: none;
}

.graph-search-input {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 0.35rem 0.75rem 0.35rem 2rem;
    font-size: 0.8rem;
    color: var(--text-primary);
    width: 200px;
    outline: none;
    transition: border-color var(--transition-fast), width var(--transition-fast);
}

.graph-search-input:focus {
    border-color: var(--accent);
    width: 260px;
}

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

.graph-search-count {
    font-size: 0.7rem;
    color: var(--text-muted);
    margin-left: 0.5rem;
    white-space: nowrap;
}

/* Graph Search Dropdown */
.graph-search-dropdown {
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 4px;
    width: 280px;
    max-height: 360px;
    overflow-y: auto;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    z-index: 20;
}

.graph-search-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.5rem 0.75rem;
    font-size: 0.8rem;
    color: var(--text-primary);
    cursor: pointer;
    border-bottom: 1px solid var(--border);
}

.graph-search-item:last-child {
    border-bottom: none;
}

.graph-search-item:hover,
.graph-search-item.active {
    background: var(--accent-subtle);
}

.graph-search-item strong {
    color: var(--accent);
}

.graph-search-item-count {
    font-size: 0.65rem;
    color: var(--text-tertiary);
    background: var(--bg-tertiary);
    border-radius: 999px;
    padding: 0.1rem 0.45rem;
    min-width: 20px;
    text-align: center;
    flex-shrink: 0;
    margin-left: 0.5rem;
}

/* Graph Zoom Hint */
.graph-zoom-hint {
    position: absolute;
    bottom: 1rem;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 0.4rem 1rem;
    font-size: 0.75rem;
    color: var(--text-secondary);
    pointer-events: none;
    transition: opacity 1s ease;
    z-index: 5;
}

/* D3 Graph Area */
.d3-graph-area {
    width: 100%;
    flex: 1;
    min-height: 400px;
    background-color: var(--bg-secondary);
    background-image: radial-gradient(circle, rgba(150,150,170,0.4) 1px, transparent 1px);
    background-size: 20px 20px;
    position: relative;
    overflow: hidden;
}

.knowledge-graph-svg {
    cursor: grab;
}

.knowledge-graph-svg:active {
    cursor: grabbing;
}

/* Graph Links */
.graph-link {
    stroke: #888;
    stroke-opacity: 0.4;
    transition: stroke-opacity 0.2s ease;
}

[data-theme="light"] .graph-link {
    stroke: #999;
    stroke-opacity: 0.35;
}

/* Graph Nodes */
.graph-node {
    cursor: pointer;
}

.graph-node circle {
    transition: all 0.2s ease;
    stroke: var(--bg-primary);
    stroke-width: 2px;
}

.graph-node circle:hover {
    stroke-width: 3px;
}

.graph-node circle.selected {
    stroke: var(--accent-light);
    stroke-width: 3px;
    filter: url(#glow);
}

.node-label {
    font-family: var(--font-sans);
    font-size: 11px;
    fill: var(--text-secondary);
    pointer-events: none;
    text-shadow: 0 1px 2px var(--bg-primary);
}

/* Graph Controls */
.graph-controls {
    position: absolute;
    bottom: 1rem;
    right: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    z-index: 10;
}

.graph-controls .btn {
    width: 36px;
    height: 36px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-primary);
    border-color: var(--border);
}

.graph-controls .btn:hover {
    background: var(--bg-elevated);
    border-color: var(--border-hover);
}

/* Graph Legend */
.graph-legend {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    background: var(--bg-tertiary);
    border-top: 1px solid var(--border);
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.legend-item {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}

.legend-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    flex-shrink: 0;
}

/* Concept Sidebar */
.concept-sidebar {
    position: absolute;
    top: 0;
    right: -400px;
    width: 400px;
    height: 100%;
    background: var(--bg-secondary);
    border-left: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    transition: right var(--transition-med);
}

.concept-sidebar.open {
    right: 0;
}

.concept-sidebar .sidebar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem;
    border-bottom: 1px solid var(--border);
    background: var(--bg-tertiary);
}

.concept-sidebar .sidebar-header h5 {
    margin: 0;
    font-size: 1.1rem;
    text-transform: capitalize;
}

.concept-sidebar .sidebar-content {
    flex: 1;
    overflow-y: auto;
    padding: 1rem;
}

/* Concept Sources */
.concept-sources {
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border);
    margin-bottom: 1rem;
}

/* Passages List */
.passages-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.passage-card {
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    padding: 1rem;
    border: 1px solid var(--border);
}

.passage-source {
    font-size: 0.75rem;
    color: var(--accent-light);
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.passage-content {
    font-size: 0.875rem;
    line-height: 1.6;
    color: var(--text-primary);
    max-height: 300px;
    overflow-y: auto;
}

.passage-content h4,
.passage-content h5,
.passage-content h6 {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0.5rem 0 0.25rem;
}

.passage-content h4:first-child,
.passage-content h5:first-child,
.passage-content h6:first-child {
    margin-top: 0;
}

.passage-content p {
    margin: 0 0 0.5rem;
}

.passage-content ul {
    margin: 0.25rem 0 0.5rem;
    padding-left: 1.25rem;
}

.passage-content li {
    margin-bottom: 0.15rem;
}

.passage-content strong {
    color: var(--text-primary);
}

.passage-content em {
    color: var(--text-secondary);
}

/* Concept highlighting in passages */
.concept-highlight {
    background: rgba(99, 102, 241, 0.25);
    color: inherit;
    padding: 0.1em 0.2em;
    border-radius: 3px;
    font-weight: 500;
}

[data-theme="dark"] .concept-highlight {
    background: rgba(99, 102, 241, 0.35);
}

/* Pulse animation for selected node */
@keyframes node-pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.2); }
}

/* Graph fade-in animation */
@keyframes graph-fade-in {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.d3-graph-area svg {
    animation: graph-fade-in 0.5s ease-out;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .concept-sidebar {
        width: 100%;
        right: -100%;
    }

    .graph-stats {
        gap: 0.5rem;
    }

    .stat-pill {
        font-size: 0.75rem;
        padding: 0.25rem 0.5rem;
    }
}

/* ===== Public Chat Page ===== */

/* Layout container: sidebar + chat */
.public-chat-layout {
    display: flex;
    height: 100vh;
    overflow: hidden;
}

/* --- Chat Sidebar --- */
.chat-sidebar {
    width: 260px;
    min-width: 260px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
}

.chat-sidebar-header {
    padding: 0.75rem;
    border-bottom: 1px solid var(--border);
}

.chat-sidebar-new-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    width: 100%;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: var(--bg-glass);
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.chat-sidebar-new-btn:hover {
    background: var(--bg-glass-hover);
    border-color: var(--border-hover);
    color: var(--text-primary);
}

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

.chat-sidebar-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 0.75rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    margin-bottom: 2px;
}

.chat-sidebar-item:hover {
    background: var(--bg-glass-hover);
}

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

.chat-sidebar-item-content {
    flex: 1;
    min-width: 0;
}

.chat-sidebar-item-title {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    line-height: 1.3;
}

.chat-sidebar-item.active .chat-sidebar-item-title {
    color: var(--accent-light);
}

.chat-sidebar-item-meta {
    font-size: 0.7rem;
    color: var(--text-tertiary);
    margin-top: 2px;
}

.chat-sidebar-delete {
    display: none;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    border-radius: 4px;
    border: none;
    background: transparent;
    color: var(--text-tertiary);
    cursor: pointer;
    flex-shrink: 0;
    transition: all var(--transition-fast);
}

.chat-sidebar-item:hover .chat-sidebar-delete {
    display: flex;
}

.chat-sidebar-delete:hover {
    background: var(--danger-subtle);
    color: var(--danger);
}

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

.chat-sidebar-empty i {
    font-size: 1.5rem;
    opacity: 0.5;
}

/* Sidebar toggle button (visible on mobile, hidden on desktop) */
.chat-sidebar-toggle {
    display: none;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

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

/* Sidebar overlay for mobile */
.chat-sidebar-overlay {
    display: none;
}

.public-chat {
    display: flex;
    flex-direction: column;
    height: 100vh;
    background: var(--bg-primary);
    flex: 1;
    min-width: 0;
}

.public-chat-header {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border);
    background: var(--bg-secondary);
}

.public-chat-header-inner {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    max-width: 720px;
    margin: 0 auto;
}

.public-chat-avatar img {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    object-fit: cover;
}

.public-chat-bot-info h4 {
    margin: 0;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.public-chat-bot-info p {
    margin: 0;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.public-chat-user {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-shrink: 0;
}

.public-chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 1.5rem;
    max-width: 720px;
    width: 100%;
    margin: 0 auto;
}

.public-chat-msg {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
    align-items: flex-end;
}

.public-chat-msg-user {
    justify-content: flex-end;
}

.public-chat-msg-avatar {
    width: 28px;
    height: 28px;
    border-radius: 8px;
    object-fit: cover;
    flex-shrink: 0;
    margin-bottom: 2px;
}

.public-chat-bubble {
    max-width: 75%;
    padding: 0.625rem 0.875rem;
    border-radius: 16px;
    font-size: 0.9rem;
    line-height: 1.45;
    word-wrap: break-word;
}

.public-chat-bubble.user {
    background: var(--accent);
    color: #fff;
    border-bottom-right-radius: 4px;
}

.public-chat-bubble.bot {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border-bottom-left-radius: 4px;
}

/* Markdown inside bot chat bubbles */
.public-chat-bubble.bot.markdown-body p:first-child { margin-top: 0; }
.public-chat-bubble.bot.markdown-body p:last-child { margin-bottom: 0; }
.public-chat-bubble.bot.markdown-body p { margin: 0.4em 0; }
.public-chat-bubble.bot.markdown-body ul,
.public-chat-bubble.bot.markdown-body ol { margin: 0.4em 0; padding-left: 1.4em; }
.public-chat-bubble.bot.markdown-body li { margin: 0.15em 0; }
.public-chat-bubble.bot.markdown-body h1,
.public-chat-bubble.bot.markdown-body h2,
.public-chat-bubble.bot.markdown-body h3,
.public-chat-bubble.bot.markdown-body h4 { margin: 0.5em 0 0.25em; font-size: 1em; font-weight: 600; }
.public-chat-bubble.bot.markdown-body code { background: rgba(255,255,255,0.08); padding: 0.1em 0.35em; border-radius: 4px; font-size: 0.85em; }
.public-chat-bubble.bot.markdown-body pre { background: rgba(0,0,0,0.25); padding: 0.6em; border-radius: 8px; overflow-x: auto; margin: 0.4em 0; }
.public-chat-bubble.bot.markdown-body pre code { background: none; padding: 0; }
.public-chat-bubble.bot.markdown-body blockquote { border-left: 3px solid var(--accent); padding-left: 0.6em; margin: 0.4em 0; opacity: 0.85; }
.public-chat-bubble.bot.markdown-body strong { font-weight: 600; }
.public-chat-bubble.bot.markdown-body a { color: var(--accent); text-decoration: underline; }

.public-chat-input-area {
    padding: 0.75rem 1.5rem 1.25rem;
    border-top: 1px solid var(--border);
    background: var(--bg-secondary);
}

.public-chat-form {
    display: flex;
    gap: 0.5rem;
    max-width: 720px;
    margin: 0 auto;
}

.public-chat-input {
    flex: 1;
    padding: 0.625rem 1rem;
    border: 1px solid var(--border);
    border-radius: 24px;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 0.9rem;
    outline: none;
    transition: border-color 0.15s;
}

.public-chat-input:focus {
    border-color: var(--accent);
}

.public-chat-send {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: none;
    background: var(--accent);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    flex-shrink: 0;
    transition: opacity 0.15s;
}

.public-chat-send:hover {
    opacity: 0.85;
}

/* Typing indicator */
.typing-indicator {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 0.75rem 1rem !important;
}

.typing-indicator span {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--text-secondary);
    animation: typing-bounce 1.2s ease-in-out infinite;
}

.typing-indicator span:nth-child(2) {
    animation-delay: 0.15s;
}

.typing-indicator span:nth-child(3) {
    animation-delay: 0.3s;
}

@keyframes typing-bounce {
    0%, 60%, 100% {
        transform: translateY(0);
        opacity: 0.4;
    }
    30% {
        transform: translateY(-4px);
        opacity: 1;
    }
}

/* Fade in animation for messages */
.public-chat-msg.fade-in {
    animation: msg-fade-in 0.2s ease-out;
}

@keyframes msg-fade-in {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Share chat button in sidebar */
.share-chat-btn {
    background: none;
    border: 1px solid var(--border-accent) !important;
    color: var(--accent-light) !important;
    cursor: pointer;
    width: 100%;
    text-align: left;
    transition: background 0.15s;
}

.share-chat-btn:hover {
    background: var(--accent-subtle) !important;
}

/* ---------- Chat Starters ---------- */
.chat-starters {
    max-width: 720px;
    width: 100%;
    margin: 0 auto;
    padding: 0 1.5rem 1rem;
}

.chat-starter-pills {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    justify-content: center;
}

.chat-starter-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.45rem 0.9rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    background: var(--bg-glass);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    user-select: none;
}

.chat-starter-pill i {
    font-size: 0.9rem;
}

.chat-starter-pill:hover {
    background: var(--bg-glass-hover);
    border-color: var(--border-hover);
    color: var(--text-primary);
}

.chat-starter-pill.active {
    background: var(--accent-subtle);
    border-color: var(--border-accent);
    color: var(--accent-light);
}

.chat-starter-panel {
    overflow: hidden;
    max-height: 0;
    transition: max-height var(--transition-med), opacity var(--transition-med);
    opacity: 0;
}

.chat-starter-panel.open {
    max-height: 300px;
    opacity: 1;
}

.chat-starter-panel-inner {
    padding: 0.75rem 0 0;
    display: flex;
    flex-direction: column;
}

.chat-starter-suggestion {
    padding: 0.6rem 0.875rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    border-bottom: 1px solid var(--border);
    line-height: 1.4;
}

.chat-starter-suggestion:last-child {
    border-bottom: none;
}

.chat-starter-suggestion:hover {
    background: var(--bg-glass-hover);
    color: var(--text-primary);
    padding-left: 1.125rem;
}

/* Responsive chat — mobile sidebar */
@media (max-width: 768px) {
    .chat-sidebar {
        position: fixed;
        top: 0;
        left: -280px;
        width: 280px;
        min-width: 280px;
        height: 100vh;
        z-index: 1001;
        transition: left var(--transition-med);
        box-shadow: none;
    }

    .chat-sidebar.open {
        left: 0;
        box-shadow: var(--shadow-lg);
    }

    .chat-sidebar-overlay {
        display: block;
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, 0.5);
        z-index: 1000;
        opacity: 0;
        pointer-events: none;
        transition: opacity var(--transition-med);
    }

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

    .chat-sidebar-toggle {
        display: flex;
    }
}

@media (max-width: 600px) {
    .public-chat-messages {
        padding: 1rem;
    }

    .public-chat-bubble {
        max-width: 85%;
    }

    .public-chat-input-area {
        padding: 0.5rem 1rem 1rem;
    }

    .chat-starters {
        padding: 0 1rem 0.75rem;
    }

    .chat-starter-pill {
        font-size: 0.75rem;
        padding: 0.375rem 0.75rem;
    }
}