/* ==========================================================================
   CVEForecast - Shared Styles
   Extracted from index.html, cna_forecast.html, and technical_details.html
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Custom Properties (Design Tokens)
   -------------------------------------------------------------------------- */
:root {
    --color-bg: #f3f4f6;
    --color-surface: #ffffff;
    --color-text: #1f2937;
    --color-text-secondary: #475569;
    --color-text-muted: #9ca3af;
    --color-text-table: #334155;
    --color-border: #e2e8f0;
    --color-border-light: #e5e7eb;
    --color-primary: #2563eb;
    --color-primary-light: #dbeafe;
    --color-primary-dark: #1e40af;
    --color-accent: #60a5fa;
    --color-row-even: #f8fafc;
    --color-row-hover: #f1f5f9;
    --color-collapsible-hover: #eff6ff;
    --color-spinner-track: #f3f3f3;
    --color-spinner-active: #3498db;
    --color-tooltip-bg: #1f2937;
    --color-tooltip-text: #ffffff;
    --color-forecast: #dc2626;
    --color-growth-positive: #dc2626;
    --color-growth-negative: #059669;
    --color-growth-neutral: #6b7280;
    --color-summary-label: #374151;
    --color-summary-value: #111827;
    --gradient-start: #1f2937;
    --gradient-mid: #374151;
    --gradient-end: #111827;
    --gradient-highlight-start: #f8fafc;
    --gradient-highlight-end: #e2e8f0;
    --shadow-card: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-content: 0 4px 6px rgba(0, 0, 0, 0.1);
    --font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

/* --------------------------------------------------------------------------
   Base Styles
   -------------------------------------------------------------------------- */
body {
    font-family: var(--font-family);
    background-color: var(--color-bg);
    color: var(--color-text);
}

/* --------------------------------------------------------------------------
   Layout & Utility Classes
   -------------------------------------------------------------------------- */
.hidden-row {
    display: none !important;
}

.gradient-bg {
    background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-mid) 50%, var(--gradient-end) 100%);
}

.rogo-blue {
    color: var(--color-accent);
}

.rogo-dark {
    color: var(--color-text);
}

.card-shadow {
    box-shadow: var(--shadow-card);
}

.chart-container {
    position: relative;
    height: 400px;
}

/* --------------------------------------------------------------------------
   Loading Spinner
   -------------------------------------------------------------------------- */
.loading-spinner {
    border: 4px solid var(--color-spinner-track);
    border-top: 4px solid var(--color-spinner-active);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 2s linear infinite;
    margin: 20px auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* --------------------------------------------------------------------------
   Metric Highlight
   -------------------------------------------------------------------------- */
.metric-highlight {
    background: linear-gradient(135deg, var(--gradient-highlight-start) 0%, var(--gradient-highlight-end) 100%);
    border-left: 4px solid var(--color-primary-dark);
}

/* --------------------------------------------------------------------------
   Validation Row
   -------------------------------------------------------------------------- */
.validation-row:hover {
    background-color: var(--color-row-hover);
}

/* --------------------------------------------------------------------------
   Tooltip
   -------------------------------------------------------------------------- */
.tooltip {
    position: relative;
}

.tooltip:hover::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-tooltip-bg);
    color: var(--color-tooltip-text);
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
    white-space: nowrap;
    z-index: 1000;
}

/* --------------------------------------------------------------------------
   Metric Link
   -------------------------------------------------------------------------- */
.metric-link {
    transition: color 0.2s ease-in-out;
    text-decoration: underline;
    text-decoration-style: dotted;
    text-underline-offset: 2px;
}

.metric-link:hover {
    color: var(--color-primary) !important;
    text-decoration-style: solid;
}

/* --------------------------------------------------------------------------
   Custom Table
   -------------------------------------------------------------------------- */
.custom-table {
    border-collapse: collapse;
    width: 100%;
    font-size: 0.9rem;
    border: 1px solid var(--color-border);
    border-radius: 0.5rem;
    overflow: hidden;
}

.custom-table th,
.custom-table td {
    padding: 0.75rem 1rem;
    text-align: left;
}

.custom-table thead {
    background-color: var(--color-row-even);
    border-bottom: 2px solid var(--color-border);
}

.custom-table th {
    font-weight: 600;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: 0.75rem;
}

.custom-table tbody tr:nth-child(even) {
    background-color: var(--color-row-even);
}

.custom-table tbody tr:hover {
    background-color: var(--color-row-hover);
}

.custom-table td {
    color: var(--color-text-table);
}

/* --------------------------------------------------------------------------
   Collapsible Row
   -------------------------------------------------------------------------- */
.collapsible-row {
    cursor: pointer;
}

.collapsible-row:hover {
    background-color: var(--color-collapsible-hover);
}

/* --------------------------------------------------------------------------
   Year Header & Nested Tables
   -------------------------------------------------------------------------- */
.year-header {
    background-color: var(--color-row-even);
}

.nested-table-container {
    padding: 0;
    background-color: var(--color-row-even);
}

.nested-table {
    width: 100%;
    border-top: 1px solid var(--color-border);
}

.nested-table td {
    padding-left: 2.5rem;
}

/* --------------------------------------------------------------------------
   Content Section (technical_details.html)
   -------------------------------------------------------------------------- */
.content-section {
    background-color: var(--color-surface);
    padding: 2rem;
    border-radius: 0.5rem;
    box-shadow: var(--shadow-content);
    margin-bottom: 2rem;
}

/* --------------------------------------------------------------------------
   Summary Card (cna_forecast.html)
   -------------------------------------------------------------------------- */
.summary-card {
    background: var(--color-surface);
    border-radius: 8px;
    padding: 1.5rem;
    box-shadow: var(--shadow-card);
}

.summary-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--color-border-light);
}

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

.summary-label {
    font-weight: 500;
    color: var(--color-summary-label);
}

.summary-value {
    font-weight: 600;
    color: var(--color-summary-value);
}

/* --------------------------------------------------------------------------
   Forecast & Growth Colors (cna_forecast.html)
   -------------------------------------------------------------------------- */
.forecast-value {
    color: var(--color-forecast);
}

.growth-positive {
    color: var(--color-growth-positive);
}

.growth-negative {
    color: var(--color-growth-negative);
}

.growth-neutral {
    color: var(--color-growth-neutral);
}

/* --------------------------------------------------------------------------
   Accessibility: Visible Focus Indicators (WCAG AA)
   -------------------------------------------------------------------------- */
*:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* --------------------------------------------------------------------------
   Accessibility: Screen Reader Only Utility
   -------------------------------------------------------------------------- */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* --------------------------------------------------------------------------
   Accessibility: Tooltip focus styles
   -------------------------------------------------------------------------- */
.tooltip:focus::after,
.tooltip:focus-within::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-tooltip-bg);
    color: var(--color-tooltip-text);
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
    white-space: nowrap;
    z-index: 1000;
}

/* --------------------------------------------------------------------------
   Dark Mode: Custom property overrides
   --------------------------------------------------------------------------
   These variables are used by our custom classes (.gradient-bg, .card-shadow,
   .custom-table, etc.) and work automatically. */

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --color-bg: #111827;
        --color-surface: #1f2937;
        --color-text: #f9fafb;
        --color-text-secondary: #d1d5db;
        --color-text-muted: #9ca3af;
        --color-text-table: #e2e8f0;
        --color-border: #374151;
        --color-border-light: #4b5563;
        --color-primary: #60a5fa;
        --color-primary-light: #1e3a5f;
        --color-primary-dark: #93c5fd;
        --color-accent: #93c5fd;
        --color-row-even: #1e293b;
        --color-row-hover: #374151;
        --color-collapsible-hover: #1e3a5f;
        --color-spinner-track: #374151;
        --color-spinner-active: #60a5fa;
        --color-tooltip-bg: #f9fafb;
        --color-tooltip-text: #1f2937;
        --color-forecast: #f87171;
        --color-growth-positive: #f87171;
        --color-growth-negative: #34d399;
        --color-growth-neutral: #9ca3af;
        --color-summary-label: #d1d5db;
        --color-summary-value: #f9fafb;
        --gradient-start: #0f172a;
        --gradient-mid: #1e293b;
        --gradient-end: #020617;
        --gradient-highlight-start: #1e293b;
        --gradient-highlight-end: #374151;
        --shadow-card: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.2);
        --shadow-content: 0 4px 6px rgba(0, 0, 0, 0.3);
    }
}

[data-theme="dark"] {
    --color-bg: #111827;
    --color-surface: #1f2937;
    --color-text: #f9fafb;
    --color-text-secondary: #d1d5db;
    --color-text-muted: #9ca3af;
    --color-text-table: #e2e8f0;
    --color-border: #374151;
    --color-border-light: #4b5563;
    --color-primary: #60a5fa;
    --color-primary-light: #1e3a5f;
    --color-primary-dark: #93c5fd;
    --color-accent: #93c5fd;
    --color-row-even: #1e293b;
    --color-row-hover: #374151;
    --color-collapsible-hover: #1e3a5f;
    --color-spinner-track: #374151;
    --color-spinner-active: #60a5fa;
    --color-tooltip-bg: #f9fafb;
    --color-tooltip-text: #1f2937;
    --color-forecast: #f87171;
    --color-growth-positive: #f87171;
    --color-growth-negative: #34d399;
    --color-growth-neutral: #9ca3af;
    --color-summary-label: #d1d5db;
    --color-summary-value: #f9fafb;
    --gradient-start: #0f172a;
    --gradient-mid: #1e293b;
    --gradient-end: #020617;
    --gradient-highlight-start: #1e293b;
    --gradient-highlight-end: #374151;
    --shadow-card: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.2);
    --shadow-content: 0 4px 6px rgba(0, 0, 0, 0.3);
}

/* --------------------------------------------------------------------------
   Dark Mode: Tailwind utility class overrides
   --------------------------------------------------------------------------
   Tailwind classes (bg-white, text-gray-900, etc.) are applied directly on
   HTML elements and override our CSS custom properties. These rules force
   dark colors when dark mode is active. Uses !important to beat Tailwind's
   specificity since we can't use Tailwind's built-in dark: variant with the
   CDN play version and data-theme attribute strategy. */

/* --- Backgrounds --- */
[data-theme="dark"] .bg-white {
    background-color: #1f2937 !important;
}
[data-theme="dark"] .bg-gray-50 {
    background-color: #1e293b !important;
}
[data-theme="dark"] .bg-gray-100 {
    background-color: #111827 !important;
}
[data-theme="dark"] .bg-gray-200 {
    background-color: #374151 !important;
}
[data-theme="dark"] .bg-gray-300 {
    background-color: #4b5563 !important;
}
[data-theme="dark"] .bg-blue-50 {
    background-color: #1e3a5f !important;
}
[data-theme="dark"] .bg-blue-100 {
    background-color: #1e3a5f !important;
}
[data-theme="dark"] .bg-blue-500 {
    background-color: #2563eb !important;
}
[data-theme="dark"] .bg-blue-600 {
    background-color: #1d4ed8 !important;
}
[data-theme="dark"] .bg-blue-700 {
    background-color: #1e40af !important;
}
[data-theme="dark"] .bg-gray-900 {
    background-color: #030712 !important;
}

/* --- Text colors --- */
[data-theme="dark"] .text-gray-500 {
    color: #9ca3af !important;
}
[data-theme="dark"] .text-gray-600 {
    color: #d1d5db !important;
}
[data-theme="dark"] .text-gray-700 {
    color: #e5e7eb !important;
}
[data-theme="dark"] .text-gray-800 {
    color: #f3f4f6 !important;
}
[data-theme="dark"] .text-gray-900 {
    color: #f9fafb !important;
}
[data-theme="dark"] .text-blue-600 {
    color: #60a5fa !important;
}
[data-theme="dark"] .text-blue-700 {
    color: #93c5fd !important;
}
[data-theme="dark"] .text-blue-800 {
    color: #93c5fd !important;
}
[data-theme="dark"] .text-blue-900 {
    color: #bfdbfe !important;
}
[data-theme="dark"] .text-green-600 {
    color: #34d399 !important;
}
[data-theme="dark"] .text-green-700 {
    color: #6ee7b7 !important;
}
[data-theme="dark"] .text-green-800 {
    color: #6ee7b7 !important;
}
[data-theme="dark"] .text-green-900 {
    color: #a7f3d0 !important;
}
[data-theme="dark"] .text-red-500 {
    color: #f87171 !important;
}
[data-theme="dark"] .text-red-600 {
    color: #f87171 !important;
}

/* --- Borders --- */
[data-theme="dark"] .border-gray-200 {
    border-color: #374151 !important;
}
[data-theme="dark"] .border-gray-300 {
    border-color: #4b5563 !important;
}
[data-theme="dark"] .border-gray-500 {
    border-color: #6b7280 !important;
}
[data-theme="dark"] .border-gray-600 {
    border-color: #6b7280 !important;
}
[data-theme="dark"] .border-blue-300 {
    border-color: #1d4ed8 !important;
}
[data-theme="dark"] .border-blue-400 {
    border-color: #2563eb !important;
}
[data-theme="dark"] .border-blue-500 {
    border-color: #3b82f6 !important;
}
[data-theme="dark"] .divide-gray-200 > :not([hidden]) ~ :not([hidden]) {
    border-color: #374151 !important;
}

/* --- Form elements --- */
[data-theme="dark"] select,
[data-theme="dark"] input[type="text"],
[data-theme="dark"] input[type="search"] {
    background-color: #374151 !important;
    color: #f9fafb !important;
    border-color: #4b5563 !important;
}

/* --- Chart canvas container --- */
[data-theme="dark"] canvas {
    filter: none;
}

/* --- Hover states --- */
[data-theme="dark"] .hover\:bg-blue-600:hover {
    background-color: #1d4ed8 !important;
}
[data-theme="dark"] .hover\:bg-gray-50:hover {
    background-color: #374151 !important;
}

/* --------------------------------------------------------------------------
   Dark Mode: Tailwind overrides for @media prefers-color-scheme
   -------------------------------------------------------------------------- */
@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) .bg-white {
        background-color: #1f2937 !important;
    }
    :root:not([data-theme="light"]) .bg-gray-50 {
        background-color: #1e293b !important;
    }
    :root:not([data-theme="light"]) .bg-gray-100 {
        background-color: #111827 !important;
    }
    :root:not([data-theme="light"]) .bg-gray-200 {
        background-color: #374151 !important;
    }
    :root:not([data-theme="light"]) .bg-gray-300 {
        background-color: #4b5563 !important;
    }
    :root:not([data-theme="light"]) .bg-blue-50 {
        background-color: #1e3a5f !important;
    }
    :root:not([data-theme="light"]) .bg-blue-100 {
        background-color: #1e3a5f !important;
    }
    :root:not([data-theme="light"]) .text-gray-500 {
        color: #9ca3af !important;
    }
    :root:not([data-theme="light"]) .text-gray-600 {
        color: #d1d5db !important;
    }
    :root:not([data-theme="light"]) .text-gray-700 {
        color: #e5e7eb !important;
    }
    :root:not([data-theme="light"]) .text-gray-800 {
        color: #f3f4f6 !important;
    }
    :root:not([data-theme="light"]) .text-gray-900 {
        color: #f9fafb !important;
    }
    :root:not([data-theme="light"]) .text-blue-600 {
        color: #60a5fa !important;
    }
    :root:not([data-theme="light"]) .text-blue-700 {
        color: #93c5fd !important;
    }
    :root:not([data-theme="light"]) .text-blue-800 {
        color: #93c5fd !important;
    }
    :root:not([data-theme="light"]) .text-green-600 {
        color: #34d399 !important;
    }
    :root:not([data-theme="light"]) .text-green-700 {
        color: #6ee7b7 !important;
    }
    :root:not([data-theme="light"]) .text-green-800 {
        color: #6ee7b7 !important;
    }
    :root:not([data-theme="light"]) .text-red-500 {
        color: #f87171 !important;
    }
    :root:not([data-theme="light"]) .text-red-600 {
        color: #f87171 !important;
    }
    :root:not([data-theme="light"]) .border-gray-200 {
        border-color: #374151 !important;
    }
    :root:not([data-theme="light"]) .border-gray-300 {
        border-color: #4b5563 !important;
    }
    :root:not([data-theme="light"]) .divide-gray-200 > :not([hidden]) ~ :not([hidden]) {
        border-color: #374151 !important;
    }
    :root:not([data-theme="light"]) select,
    :root:not([data-theme="light"]) input[type="text"],
    :root:not([data-theme="light"]) input[type="search"] {
        background-color: #374151 !important;
        color: #f9fafb !important;
        border-color: #4b5563 !important;
    }
}