/* ==========================================================================
   Theme System — Light (default) & Dark
   ========================================================================== */

:root, [data-theme="light"] {
    /* ── Core backgrounds ─────────────────────────────────────── */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #f0f1f3;
    --bg-hover: #e9ecef;
    --bg-code: #f5f5f5;

    /* ── Text ──────────────────────────────────────────────────── */
    --text-primary: #1a1a1a;
    --text-secondary: #555555;
    --text-muted: #999999;
    --text-code: #333333;
    --text-code-inline: #a3365a;

    /* ── Borders ───────────────────────────────────────────────── */
    --border-color: #d0d5dd;
    --border-light: #e4e7ec;
    --border-heavy: #b0b8c4;

    /* ── Accent / brand ────────────────────────────────────────── */
    --accent-color: #2563eb;
    --accent-hover: #1d4ed8;
    --accent-muted: rgba(37, 99, 235, 0.1);
    --accent-glow: rgba(37, 99, 235, 0.35);

    /* ── Links ─────────────────────────────────────────────────── */
    --link-color: #2563eb;
    --link-hover: #1d4ed8;

    /* ── Status colors ─────────────────────────────────────────── */
    --success-color: #16a34a;
    --success-text: #15803d;
    --danger-color: #dc2626;
    --danger-text: #b91c1c;
    --danger-bg: rgba(220, 38, 38, 0.08);
    --warning-color: #d97706;
    --warning-text: #92400e;
    --warning-bg: rgba(217, 119, 6, 0.08);
    --info-bg: #e0f2fe;
    --info-text: #0369a1;
    --orange-color: #ea580c;

    /* ── Sidebar ──────────────────────────────────────────────── */
    --sidebar-bg: #f3f4f6;
    --sidebar-text: #1f2937;
    --sidebar-text-muted: #6b7280;
    --sidebar-text-dim: #9ca3af;
    --sidebar-text-faint: #d1d5db;
    --sidebar-hover: rgba(0, 0, 0, 0.05);
    --sidebar-active: rgba(37, 99, 235, 0.1);
    --sidebar-border: #e5e7eb;

    /* ── Navigation ───────────────────────────────────────────── */
    --nav-bg: #ffffff;
    --nav-border: #e5e7eb;
    --nav-text: #1f2937;
    --nav-text-muted: #6b7280;
    --nav-hover: #f3f4f6;
    --nav-active: rgba(37, 99, 235, 0.1);

    /* ── Tool / code panel ─────────────────────────────────────── */
    --tool-name-color: #2563eb;
    --tool-duration-color: #16a34a;
    --tool-label-color: #6b7280;

    /* ── Thought / narrative ────────────────────────────────────── */
    --thought-accent: #7c3aed;
    --thought-text: #6d28d9;
    --thought-label: #7c3aed;
    --thought-code-bg: rgba(124, 58, 237, 0.06);
    --thought-code-text: #5b21b6;

    /* ── Scrollbar ─────────────────────────────────────────────── */
    --scrollbar-track: #f0f0f0;
    --scrollbar-thumb: #c4c4c4;
    --scrollbar-thumb-hover: #a0a0a0;

    /* ── Misc semantic ─────────────────────────────────────────── */
    --copied-bg: #dcfce7;
    --copied-text: #15803d;
    --error-bg: #fef2f2;
    --error-panel-bg: #fff5f5;
    --api-error-bg-start: #fff7ed;
    --api-error-bg-end: #fffbeb;
    --api-error-text: #9a3412;
    --api-error-body: #44403c;
    --api-error-quote: #c2410c;
    --secondary-badge: #9ca3af;
    --bubble-bg: rgba(255, 255, 255, 0.9);
    --bubble-hover-bg: rgba(243, 244, 246, 0.95);
    --bubble-border: #d1d5db;
    --bubble-text: #374151;
    --surface-overlay: rgba(0, 0, 0, 0.03);
    --surface-overlay-hover: rgba(0, 0, 0, 0.06);
    --agent-surface: #f9fafb;
    --tool-reason-bg: #f3f4f6;
    --validation-valid: #16a34a;
    --validation-invalid: #dc2626;

    /* ── System message ──────────────────────────────────────────── */
    --system-bg: #eff6ff;
    --system-border: #bfdbfe;
    --system-text: #1e40af;

    /* ── Admin utilities ─────────────────────────────────────────── */
    --admin-surface: var(--bg-tertiary);
    --admin-surface-alt: var(--bg-hover);
    --resize-handle: #c4c4c4;

    /* ── Chat bubbles ─────────────────────────────────────────── */
    --user-bubble-bg: #2563eb;
    --user-bubble-text: #ffffff;
    --assistant-bubble-bg: #f3f4f6;
    --assistant-bubble-text: #1a1a1a;

    /* ── Login gradient ───────────────────────────────────────── */
    --login-gradient-start: #eff6ff;
    --login-gradient-mid: #f0f9ff;
    --login-gradient-end: #faf5ff;

    /* ── Button close filter ──────────────────────────────────── */
    --btn-close-filter: none;
}

[data-theme="dark"] {
    /* ── Core backgrounds ─────────────────────────────────────── */
    --bg-primary: #0f0f0f;
    --bg-secondary: #1a1a1a;
    --bg-tertiary: #242424;
    --bg-hover: #2d2d2d;
    --bg-code: #1a1a1a;

    /* ── Text ──────────────────────────────────────────────────── */
    --text-primary: #e0e0e0;
    --text-secondary: #a0a0a0;
    --text-muted: #6c6c6c;
    --text-code: #d4d4d4;
    --text-code-inline: #b06080;

    /* ── Borders ───────────────────────────────────────────────── */
    --border-color: #333333;
    --border-light: #2a2a2a;
    --border-heavy: #444444;

    /* ── Accent / brand ────────────────────────────────────────── */
    --accent-color: #3b82f6;
    --accent-hover: #2563eb;
    --accent-muted: rgba(59, 130, 246, 0.15);
    --accent-glow: rgba(59, 130, 246, 0.5);

    /* ── Links ─────────────────────────────────────────────────── */
    --link-color: #60a5fa;
    --link-hover: #93bbfd;

    /* ── Status colors ─────────────────────────────────────────── */
    --success-color: #198754;
    --success-text: #98c379;
    --danger-color: #dc3545;
    --danger-text: #ff6b6b;
    --danger-bg: rgba(220, 53, 69, 0.15);
    --warning-color: #ffc107;
    --warning-text: #ffda6a;
    --warning-bg: rgba(255, 193, 7, 0.15);
    --info-bg: #1a7480;
    --info-text: #9ad4dc;
    --orange-color: #fd7e14;

    /* ── Notebook badge colors (dark variants) ───────────────── */
    --badge-sql-bg: #1e3a5f;
    --badge-sql-fg: #93c5fd;
    --badge-python-bg: #422006;
    --badge-python-fg: #fcd34d;
    --badge-markdown-bg: #312e81;
    --badge-markdown-fg: #a5b4fc;
    --badge-chart-bg: #064e3b;
    --badge-chart-fg: #6ee7b7;
    --badge-params-bg: #831843;
    --badge-params-fg: #f9a8d4;

    /* ── Sidebar (keep gradient vars for transition compatibility) ── */
    --sidebar-start: #1a1a2e;
    --sidebar-mid: #16213e;
    --sidebar-end: #0f3460;
    --sidebar-bg: #141414;
    --sidebar-text: rgba(255, 255, 255, 0.9);
    --sidebar-text-muted: rgba(255, 255, 255, 0.6);
    --sidebar-text-dim: rgba(255, 255, 255, 0.4);
    --sidebar-text-faint: rgba(255, 255, 255, 0.3);
    --sidebar-hover: rgba(255, 255, 255, 0.1);
    --sidebar-active: rgba(255, 255, 255, 0.2);
    --sidebar-border: rgba(255, 255, 255, 0.1);

    /* ── Navigation ───────────────────────────────────────────── */
    --nav-bg: #141414;
    --nav-border: #2a2a2a;
    --nav-text: #e0e0e0;
    --nav-text-muted: #888888;
    --nav-hover: #1f1f1f;
    --nav-active: rgba(59, 130, 246, 0.15);

    /* ── Tool / code panel ─────────────────────────────────────── */
    --tool-name-color: #5590b8;
    --tool-duration-color: #6a9a52;
    --tool-label-color: #abb2bf;

    /* ── Thought / narrative ────────────────────────────────────── */
    --thought-accent: #4a3e90;
    --thought-text: #8c80b8;
    --thought-label: #7868a8;
    --thought-code-bg: rgba(74, 62, 144, 0.15);
    --thought-code-text: #a0a0bc;

    /* ── Scrollbar ─────────────────────────────────────────────── */
    --scrollbar-track: #1a1a1a;
    --scrollbar-thumb: #404040;
    --scrollbar-thumb-hover: #555555;

    /* ── Misc semantic ─────────────────────────────────────────── */
    --copied-bg: #1a3a2a;
    --copied-text: #98c379;
    --error-bg: #3d1f1f;
    --error-panel-bg: #2d1f1f;
    --api-error-bg-start: #4a2a1a;
    --api-error-bg-end: #3d1f0f;
    --api-error-text: #ffc9a8;
    --api-error-body: #e0d0c0;
    --api-error-quote: #ff9a6a;
    --secondary-badge: #6c757d;
    --bubble-bg: rgba(50, 50, 50, 0.85);
    --bubble-hover-bg: rgba(70, 70, 70, 0.95);
    --bubble-border: #555;
    --bubble-text: #ccc;
    --surface-overlay: rgba(255, 255, 255, 0.05);
    --surface-overlay-hover: rgba(255, 255, 255, 0.1);
    --agent-surface: #1a1c20;
    --tool-reason-bg: #252830;
    --validation-valid: #26b050;
    --validation-invalid: #e50000;

    /* ── System message ──────────────────────────────────────────── */
    --system-bg: #1a3a5c;
    --system-border: #2d5a8a;
    --system-text: #7aacc8;

    /* ── Admin utilities ─────────────────────────────────────────── */
    --admin-surface: var(--bg-tertiary);
    --admin-surface-alt: var(--bg-hover);
    --resize-handle: #555;

    /* ── Chat bubbles ─────────────────────────────────────────── */
    --user-bubble-bg: #2563eb;
    --user-bubble-text: #ffffff;
    --assistant-bubble-bg: #1e1e1e;
    --assistant-bubble-text: #e0e0e0;

    /* ── Login gradient ───────────────────────────────────────── */
    --login-gradient-start: #0a0a1a;
    --login-gradient-mid: #0f1629;
    --login-gradient-end: #0a1a3a;

    /* ── Button close filter ──────────────────────────────────── */
    --btn-close-filter: invert(1) grayscale(100%) brightness(200%);

    /* ── Form input color scheme ─────────────────────────────── */
    color-scheme: dark;
}

/* ==========================================================================
   Navigation Loading Bar
   ========================================================================== */

#nav-loading-bar {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    width: 0%;
    background: linear-gradient(90deg, var(--accent-color), #60a5fa);
    z-index: 99999;
    pointer-events: none;
    opacity: 0;
    box-shadow: 0 0 8px var(--accent-glow);
}

/* ==========================================================================
   Base
   ========================================================================== */

html, body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    font-size: 14px;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    margin: 0;
    padding: 0;
    overflow: hidden;
    height: 100%;
}

a, .btn-link {
    color: var(--link-color);
    transition: color 0.12s ease;
}

a:hover {
    color: var(--link-hover);
}

/* Global button transitions for instant feedback */
.btn {
    transition: background-color 0.12s ease, border-color 0.12s ease, color 0.12s ease,
                box-shadow 0.12s ease, transform 0.08s ease, opacity 0.12s ease;
}

.btn:active:not(:disabled) {
    transform: scale(0.97);
}

/* Tab link press feedback */
.nav-tabs .nav-link {
    transition: background-color 0.12s ease, border-color 0.12s ease, color 0.12s ease,
                transform 0.08s ease;
}

.nav-tabs .nav-link:active:not(.active) {
    transform: scale(0.96);
}

/* Tab content fade-in on switch */
.tab-content > .tab-pane,
.nav-tabs ~ .card,
.nav-tabs ~ div > .card {
    animation: tabFadeIn 0.15s ease-out;
}

@keyframes tabFadeIn {
    from { opacity: 0; transform: translateY(4px); }
    to   { opacity: 1; transform: translateY(0); }
}

.btn-primary {
    color: #fff;
    background-color: var(--accent-color);
    border-color: var(--accent-color);
}

.btn-primary:hover {
    background-color: var(--accent-hover);
    border-color: var(--accent-hover);
}

.btn-outline-primary {
    color: var(--link-color);
    border-color: var(--link-color);
}

.btn-outline-primary:hover {
    background-color: var(--accent-color);
    border-color: var(--accent-color);
    color: #fff;
}

.btn-outline-secondary {
    color: var(--text-secondary);
    border-color: var(--border-color);
}

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

.btn-outline-warning {
    color: var(--warning-color);
    border-color: var(--warning-color);
}

.btn-outline-warning:hover {
    background-color: var(--warning-color);
    color: #000;
}

.btn-outline-danger {
    color: var(--danger-color);
    border-color: var(--danger-color);
}

.btn-outline-danger:hover {
    background-color: var(--danger-color);
    color: #fff;
}

.btn-outline-success {
    color: var(--success-color);
    border-color: var(--success-color);
}

.btn-outline-success:hover {
    background-color: var(--success-color);
    color: #fff;
}

.btn:focus, .btn:active:focus {
    box-shadow: 0 0 0 2px var(--bg-primary), 0 0 0 4px var(--accent-muted);
}

.btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
    box-shadow: 0 0 0 0.1rem var(--bg-primary), 0 0 0 0.25rem var(--accent-glow);
}

.content {
    padding-top: 1.1rem;
    animation: pageFadeIn 0.2s ease-out;
}

@keyframes pageFadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to   { opacity: 1; transform: translateY(0); }
}

h1:focus {
    outline: none;
}

h1, h2, h3, h4, h5, h6 {
    color: var(--text-primary);
}

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

/* Bootstrap text colors override */
.text-secondary {
    color: var(--text-secondary) !important;
}

.text-dark {
    color: var(--text-primary) !important;
}

.text-body {
    color: var(--text-primary) !important;
}

/* Form Controls */
.form-control {
    background-color: var(--bg-tertiary);
    border-color: var(--border-color);
    color: var(--text-primary);
    border-radius: 6px;
}

.form-control:focus {
    background-color: var(--bg-secondary);
    border-color: var(--accent-color);
    color: var(--text-primary);
}

.form-control::placeholder {
    color: var(--text-muted);
}

.form-control:disabled {
    background-color: var(--bg-primary);
    color: var(--text-muted);
}

.form-select {
    background-color: var(--bg-tertiary);
    border-color: var(--border-color);
    color: var(--text-primary);
    border-radius: 6px;
}

.form-select:focus {
    background-color: var(--bg-secondary);
    border-color: var(--accent-color);
    color: var(--text-primary);
}

.form-check-input {
    background-color: var(--bg-tertiary);
    border-color: var(--border-color);
}

.form-check-input:checked {
    background-color: var(--accent-color);
    border-color: var(--accent-color);
}

.form-check-label {
    color: var(--text-secondary);
}

/* Cards */
.card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
    color: var(--text-primary);
}

.card-header {
    background-color: var(--bg-tertiary);
    border-bottom-color: var(--border-color);
    color: var(--text-primary);
}

.card-footer {
    background-color: var(--bg-tertiary);
    border-top-color: var(--border-color);
}

.card-title {
    color: var(--text-primary);
}

.card-text {
    color: var(--text-secondary);
}

.card-body {
    color: var(--text-primary);
}

/* Tables - Dark Mode */
.table {
    color: var(--text-primary);
    border-color: var(--border-color);
}

.table > :not(caption) > * > * {
    background-color: transparent;
    border-bottom-color: var(--border-color);
}

.table > thead {
    background-color: var(--bg-tertiary);
}

.table > tbody > tr {
    transition: background-color 0.1s ease;
}

.table > tbody > tr:hover {
    background-color: var(--bg-hover);
}

.table-secondary {
    background-color: var(--bg-tertiary) !important;
}

/* Modals - Dark Mode */
.modal-content {
    background-color: var(--bg-secondary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

.modal-header {
    border-bottom-color: var(--border-color);
}

.modal-footer {
    border-top-color: var(--border-color);
}

.modal-backdrop.show {
    opacity: 0.7;
}

/* Dark modal variant (used by DeleteConfirmation, etc.) */
.modal-dark {
    background: var(--bg-code);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.modal-dark .modal-header {
    border-bottom: 1px solid var(--border-color);
}

.modal-dark .modal-footer {
    border-top: 1px solid var(--border-color);
}

/* Modal backdrop for custom modals */
.modal-backdrop-dark {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1050;
}

.btn-close {
    filter: var(--btn-close-filter);
}

/* Badges - Dark Mode adjustments */
.badge.bg-secondary {
    background-color: var(--bg-tertiary) !important;
    color: var(--text-secondary);
}

.badge.bg-success {
    background-color: var(--success-color) !important;
}

.badge.bg-info {
    background-color: var(--info-bg) !important;
    color: var(--info-text);
}

/* Alerts - Dark Mode */
.alert-warning {
    background-color: var(--warning-bg);
    border-color: rgba(255, 193, 7, 0.3);
    color: var(--warning-text);
}

/* Nav tabs — underline style */
.nav-tabs {
    border-bottom: 2px solid var(--border-light);
    gap: 0;
    scrollbar-width: none;
}

.nav-tabs::-webkit-scrollbar {
    display: none;
}

.nav-tabs .nav-link {
    border: none;
    border-bottom: 2px solid transparent;
    border-radius: 0;
    margin-bottom: -2px;
    padding: 0.5rem 0.75rem;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.8rem;
    transition: color 0.15s, border-color 0.15s;
    white-space: nowrap;
}

.nav-tabs .nav-link:hover {
    border-bottom-color: var(--border-heavy);
    color: var(--text-primary);
    background: transparent;
}

.nav-tabs .nav-link.active {
    background: transparent;
    border-bottom-color: var(--accent-color);
    color: var(--accent-color);
    font-weight: 600;
}

/* Code elements */
code {
    background-color: var(--bg-tertiary);
    color: var(--text-code-inline);
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
}

pre {
    background-color: var(--bg-code);
    color: var(--text-code);
}

/* Validation states */
.valid.modified:not([type=checkbox]) {
    outline: 1px solid var(--validation-valid);
}

.invalid {
    outline: 1px solid var(--validation-invalid);
}

.validation-message {
    color: var(--danger-text);
}

/* Blazor error UI */
.blazor-error-boundary {
    background: url(data:image/svg+xml;base64,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) no-repeat 1rem/1.8rem, #b32121;
    padding: 1rem 1rem 1rem 3.7rem;
    color: white;
}

    .blazor-error-boundary::after {
        content: "An error has occurred."
    }

.darker-border-checkbox.form-check-input {
    border-color: var(--text-secondary);
}

.form-floating > .form-control-plaintext::placeholder, .form-floating > .form-control::placeholder {
    color: var(--bs-secondary-color);
    text-align: end;
}

.form-floating > .form-control-plaintext:focus::placeholder, .form-floating > .form-control:focus::placeholder {
    text-align: start;
}

/* Spinner - Dark Mode */
.spinner-border {
    color: var(--accent-color);
}

/* Skeleton loading animation */
@keyframes skeletonShimmer {
    0%   { background-position: -400px 0; }
    100% { background-position: 400px 0; }
}

.skeleton {
    background: linear-gradient(90deg,
        var(--bg-secondary) 25%,
        var(--bg-hover) 50%,
        var(--bg-secondary) 75%);
    background-size: 800px 100%;
    animation: skeletonShimmer 1.4s infinite linear;
    border-radius: 4px;
    color: transparent !important;
    user-select: none;
}

/* Loading state for page sections — spinner centered with subtle fade */
.page-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 3rem 1rem;
    gap: 1rem;
    animation: pageFadeIn 0.15s ease-out;
}

.page-loading .spinner-border {
    width: 2rem;
    height: 2rem;
}

.page-loading p {
    color: var(--text-secondary);
    margin: 0;
    font-size: 0.9rem;
}

/* List Groups - Dark Mode */
.list-group-item {
    background-color: var(--bg-secondary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

.list-group-item-action {
    color: var(--text-primary);
}

.list-group-item-action:hover,
.list-group-item-action:focus {
    background-color: var(--bg-hover);
    color: var(--text-primary);
}

.list-group-item-action.active {
    background-color: var(--accent-color);
    border-color: var(--accent-color);
    color: #fff;
}

.list-group-item .text-muted {
    color: var(--text-muted) !important;
}

/* Small text */
small, .small {
    color: var(--text-secondary);
}

/* Strong/bold text */
strong, b {
    color: inherit;
}

/* Paragraphs */
p {
    color: var(--text-primary);
}

/* Labels */
label, .form-label {
    color: var(--text-primary);
}

/* Lead text */
.lead {
    color: var(--text-secondary);
}

/* Override Bootstrap bg-light for dark mode */
.bg-light {
    background-color: var(--bg-tertiary) !important;
    color: var(--text-primary) !important;
}

/* Container backgrounds */
.container {
    background-color: transparent;
}

/* Alert danger for dark mode */
.alert-danger {
    background-color: var(--danger-bg);
    border-color: rgba(220, 53, 69, 0.3);
    color: var(--danger-text);
}

/* Toast styling */
.toast {
    background-color: var(--bg-tertiary);
    border-color: var(--border-color);
}

/* Dropdown menus */
.dropdown-menu {
    background-color: var(--bg-secondary);
    border-color: var(--border-color);
}

.dropdown-item {
    color: var(--text-primary);
}

.dropdown-item:hover,
.dropdown-item:focus {
    background-color: var(--bg-hover);
    color: var(--text-primary);
}

/* Select option styling (for dark dropdown arrows) */
.form-select {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%23a0a0a0' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M2 5l6 6 6-6'/%3e%3c/svg%3e");
}

/* Table header text */
.table th {
    color: var(--text-primary);
}

/* Table data text */
.table td {
    color: var(--text-primary);
}

/* Ensure option elements in selects have proper colors */
option {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}

/* ============================================================
   Styles for dynamically-injected HTML (via MarkupString).
   These MUST live in a global stylesheet — Blazor CSS isolation
   does not scope-attribute elements injected via MarkupString,
   so any rules in a .razor.css file are silently ignored.
   ============================================================ */

/* Data table styling — rendered by ChatMessageFormatter */
.data-table {
    width: auto;
    min-width: 50%;
    max-width: 100%;
    border-collapse: collapse;
    margin: 0.75rem 0;
    font-size: 0.85rem;
    background: var(--bg-tertiary);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
    border: 1px solid var(--border-color);
}

.top-bar {
    background-color: var(--bg-secondary);
}

.data-table th {
    background: var(--bg-tertiary);
    border-bottom: 2px solid var(--border-heavy);
    border-right: 1px solid var(--border-color);
    padding: 0.6rem 1.25rem;
    text-align: left;
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
}

.data-table th:last-child {
    border-right: none;
}

.data-table td {
    padding: 0.5rem 1.25rem;
    border-bottom: 1px solid var(--border-light);
    border-right: 1px solid var(--border-light);
    vertical-align: top;
    color: var(--text-primary);
    line-height: 1.5;
}

.data-table td:last-child {
    border-right: none;
}

.data-table tbody tr:hover {
    background: var(--bg-hover);
}

.data-table tbody tr:last-child td {
    border-bottom: none;
}

/* Code block styling — rendered by ChatMessageFormatter */
.code-block {
    background: var(--bg-code);
    border-radius: 6px;
    margin: 1rem 0;
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.code-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 1rem;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.code-lang {
    font-weight: 600;
    text-transform: uppercase;
}

.btn-copy {
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 0.2rem 0.6rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.btn-copy:hover {
    background: var(--bg-hover);
    border-color: var(--text-muted);
    color: var(--text-primary);
}

.btn-copy.copied {
    background: var(--copied-bg);
    border-color: var(--success-color);
    color: var(--copied-text);
}

.code-block pre {
    margin: 0;
    padding: 1rem;
    overflow-x: auto;
}

.code-block code {
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 0.9rem;
}

/* ------------------------------------------------------------------
   Styles for elements INSIDE MarkupString-injected HTML.
   FormatMessage() injects <strong>, <em>, <code>, <pre>, <h3-h5>,
   <hr>, <blockquote>, <p>, <ul>, <ol> etc. into .message-text and
   .thought-narrative-body.  These elements never receive Blazor's
   CSS isolation attribute, so descendant rules in .razor.css are
   silently ignored.  They MUST live here (global).
   ------------------------------------------------------------------ */

/* Inline code inside chat messages */
.message-text code {
    background: var(--surface-overlay-hover);
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
    font-size: 0.9em;
    font-family: 'Consolas', 'Monaco', monospace;
    color: var(--text-code-inline);
}

.message.user .message-text code {
    background: rgba(255,255,255,0.2);
    color: #fff;
}

/* Code blocks inside chat messages */
.message-text pre {
    background: var(--bg-code);
    color: var(--text-code);
    padding: 1rem;
    border-radius: 8px;
    overflow-x: auto;
    margin: 0.75rem 0;
    font-size: 0.85rem;
}

.message-text pre code {
    background: none;
    padding: 0;
    color: inherit;
}

/* Markdown headers in messages */
.message-text h3,
.message-text h4,
.message-text h5 {
    margin: 0.75rem 0 0.5rem 0;
    font-weight: 600;
    color: var(--text-primary);
}

.message-text h3 { font-size: 1.1rem; }
.message-text h4 { font-size: 1rem; }
.message-text h5 { font-size: 0.95rem; }

.message-text hr {
    margin: 0.75rem 0;
    border: none;
    border-top: 1px solid var(--surface-overlay-hover);
}

.message-text strong {
    color: inherit;
}

/* API error message — injected descendants */
.message.api-error .message-text strong {
    color: var(--api-error-text);
}

.message.api-error .message-text blockquote {
    background: rgba(0, 0, 0, 0.2);
    border-left: 3px solid var(--orange-color);
    padding: 0.5rem 1rem;
    margin: 0.5rem 0;
    border-radius: 0 4px 4px 0;
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 0.85rem;
    color: var(--api-error-quote);
}

/* Thought narrative — injected descendants */
.thought-narrative-body p {
    margin: 0 0 0.4rem 0;
}

.thought-narrative-body p:last-child {
    margin-bottom: 0;
}

.thought-narrative-body ul,
.thought-narrative-body ol {
    margin: 0.25rem 0 0.4rem 1.2rem;
    padding: 0;
}

.thought-narrative-body code {
    background: var(--thought-code-bg);
    border-radius: 3px;
    padding: 0.1em 0.3em;
    font-size: 0.82em;
    color: var(--thought-code-text);
}

/* ==========================================================================
   Admin / Utility Page Helpers
   ========================================================================== */

/* Monospace text display (logs, SQL, code previews) */
.mono-display {
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 0.85em;
}

/* Clickable elements without native button styling */
.clickable {
    cursor: pointer;
}

/* Constrained-width selects/inputs */
.max-w-sm { max-width: 400px; }

/* Scrollable result containers */
.result-scroll {
    max-height: 600px;
    overflow-y: auto;
}

/* Truncated table cells */
.cell-truncate {
    max-width: 300px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* ==========================================================================
   Login Page
   ========================================================================== */

.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, var(--login-gradient-start) 0%, var(--login-gradient-mid) 50%, var(--login-gradient-end) 100%);
}

.login-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: 12px;
    padding: 2.5rem;
    width: 100%;
    max-width: 400px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
}

/* ── Plotly chart modebar modernization ── */

/* Single unified toolbar */
.modebar {
    display: flex !important;
    align-items: center !important;
    background: var(--bg-secondary, rgba(255,255,255,0.85)) !important;
    border: 1px solid var(--border-light, #e5e7eb) !important;
    border-radius: 8px !important;
    padding: 3px 6px !important;
    backdrop-filter: blur(8px);
    box-shadow: 0 1px 4px rgba(0,0,0,0.06);
}

[data-theme="dark"] .modebar {
    background: rgba(39,39,42,0.9) !important;
    border-color: rgba(255,255,255,0.1) !important;
    box-shadow: 0 1px 4px rgba(0,0,0,0.3);
}

/* Remove per-group backgrounds — unified bar */
.modebar-group {
    display: inline-flex !important;
    align-items: center !important;
    background: none !important;
    border: none !important;
    box-shadow: none !important;
    padding: 0 2px !important;
    margin: 0 !important;
}

.modebar-group + .modebar-group {
    border-left: 1px solid var(--border-light, #e5e7eb) !important;
    margin-left: 2px !important;
    padding-left: 4px !important;
}

[data-theme="dark"] .modebar-group + .modebar-group {
    border-left-color: rgba(255,255,255,0.1) !important;
}

/* Button: Plotly uses <a> tags — force flex layout for centering */
a.modebar-btn {
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    padding: 4px !important;
    border-radius: 4px !important;
    transition: background 0.15s !important;
    font-size: 0 !important;
    line-height: 1 !important;
    text-decoration: none !important;
}

/* SVG icons — strip Plotly's 1em sizing, use fixed pixels */
a.modebar-btn svg {
    display: block !important;
    width: 16px !important;
    height: 16px !important;
    vertical-align: middle !important;
}

.modebar-btn:hover {
    background: var(--bg-hover, rgba(0,0,0,0.05)) !important;
}

.modebar-btn path {
    fill: var(--text-muted, #9ca3af) !important;
}

.modebar-btn:hover path {
    fill: var(--accent-color, #6366f1) !important;
}

.modebar-btn.active path {
    fill: var(--accent-color, #6366f1) !important;
}

/* ── CodeMirror autocomplete & tooltip styling ── */

.cm-tooltip {
    background: var(--bg-primary, #fff) !important;
    border: 1px solid var(--border-light, #e0e0e0) !important;
    border-radius: 6px !important;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1) !important;
    font-family: 'Cascadia Code', 'Fira Code', 'SF Mono', 'Consolas', monospace !important;
    font-size: 0.78rem !important;
    overflow: hidden;
}

[data-theme="dark"] .cm-tooltip {
    background: var(--bg-secondary, #27272a) !important;
    border-color: rgba(255,255,255,0.1) !important;
    box-shadow: 0 4px 12px rgba(0,0,0,0.4) !important;
}

.cm-tooltip-autocomplete ul {
    max-height: 200px;
}

.cm-tooltip-autocomplete ul li {
    padding: 3px 8px !important;
    line-height: 1.4;
}

.cm-tooltip-autocomplete ul li[aria-selected] {
    background: var(--accent-color, #6366f1) !important;
    color: #fff !important;
}

.cm-completionLabel {
    font-family: inherit !important;
}

.cm-completionDetail {
    font-style: normal !important;
    color: var(--text-muted, #6b7280);
    margin-left: 8px;
}

[data-theme="dark"] .cm-completionDetail {
    color: var(--text-muted, #a1a1aa);
}

.cm-completionIcon {
    opacity: 0.6;
}