/* ================================================================
   FacetRefractor — Gemstone Critical Angle Engine
   Prismatic dark theme with gemstone refractive glow
   ================================================================ */

/* -- Design Tokens ------------------------------------------------ */
:root {
    --color-bg: #08080f;
    --color-surface: #111118;
    --color-surface-alt: #191920;
    --color-text: #e0daf0;
    --color-text-muted: #5a5478;
    --color-accent: #f472b6;
    --color-accent-glow: rgba(244, 114, 182, 0.12);
    --color-accent-bright: #f9a8d4;
    --color-crown: #818cf8;
    --color-pavilion: #a78bfa;
    --color-ray-in: #fbbf24;
    --color-ray-reflect: #22d3ee;
    --color-ray-exit: #34d399;
    --color-ray-leak: #ef4444;
    --color-safe: #22c55e;
    --color-warning: #f59e0b;
    --color-danger: #ef4444;
    --color-gem-fill: rgba(167, 139, 250, 0.06);
    --color-gem-stroke: rgba(167, 139, 250, 0.3);
    --radius: 8px;
    --radius-lg: 12px;
    --transition: 0.3s ease;
}

/* -- Reset -------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--color-bg);
    color: var(--color-text);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 1rem;
    -webkit-font-smoothing: antialiased;
}

/* -- Header ------------------------------------------------------- */
.app-header { text-align: center; margin-bottom: 1.5rem; }
.app-header h1 { font-size: 1.8rem; font-weight: 700; letter-spacing: 0.02em; }
.app-header .accent { color: var(--color-accent); }
.app-header p { font-size: 0.85rem; color: var(--color-text-muted); margin-top: 0.3rem; }

/* -- Ad Placeholders ---------------------------------------------- */
.ad-placeholder {
    display: flex; align-items: center; justify-content: center;
    border: 2px dashed rgba(90, 84, 120, 0.3);
    background: rgba(0, 0, 0, 0.2);
    color: var(--color-text-muted); font-size: 0.75rem; font-weight: 600;
    margin: 0 auto; width: 100%;
}
.ad-mobile { height: 50px; max-width: 320px; }
.ad-desktop { display: none; height: 90px; max-width: 728px; }

/* -- Layout ------------------------------------------------------- */
.app-main { width: 100%; max-width: 1200px; display: flex; flex-direction: column; gap: 1rem; }
.dashboard { display: flex; flex-direction: column; gap: 1rem; }

/* -- Sidebar ------------------------------------------------------ */
.sidebar { width: 100%; }

.input-panel {
    background: var(--color-surface);
    border: 1px solid rgba(148, 163, 184, 0.06);
    border-radius: var(--radius-lg);
    padding: 1rem 1.25rem;
    margin-bottom: 0.6rem;
}

.input-panel h2 {
    font-size: 0.75rem; font-weight: 700; text-transform: uppercase;
    letter-spacing: 0.08em; color: var(--color-accent);
    margin-bottom: 0.75rem; padding-bottom: 0.4rem;
    border-bottom: 1px solid rgba(148, 163, 184, 0.06);
}

.input-group { margin-bottom: 0.65rem; }
.input-group label {
    display: block; font-size: 0.75rem; font-weight: 600;
    color: var(--color-text-muted); margin-bottom: 0.2rem;
}

.input-group select,
.input-group input[type="number"] {
    width: 100%;
    background: var(--color-surface-alt);
    border: 1px solid rgba(148, 163, 184, 0.1);
    color: var(--color-text);
    padding: 0.55rem 0.75rem;
    border-radius: var(--radius);
    font-size: 0.85rem;
    font-family: inherit;
    transition: border-color var(--transition);
}

.input-group select:focus,
.input-group input[type="number"]:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px var(--color-accent-glow);
}

/* Range Sliders */
input[type="range"] {
    width: 100%; -webkit-appearance: none; appearance: none;
    height: 5px; background: var(--color-surface-alt);
    border-radius: 3px; outline: none; margin-top: 0.3rem;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none; appearance: none;
    width: 16px; height: 16px; border-radius: 50%;
    background: var(--color-accent); cursor: pointer;
    border: 2px solid var(--color-bg);
    box-shadow: 0 0 6px rgba(244, 114, 182, 0.3);
}

input[type="range"]::-moz-range-thumb {
    width: 16px; height: 16px; border-radius: 50%;
    background: var(--color-accent); cursor: pointer;
    border: 2px solid var(--color-bg);
}

.input-group output {
    display: block; text-align: center;
    font-size: 0.8rem; font-weight: 700;
    color: var(--color-accent); margin-top: 0.15rem;
    font-variant-numeric: tabular-nums;
}

/* Critical Angles Panel */
.critical-panel { border: 1px solid rgba(244, 114, 182, 0.15); }

.critical-row {
    display: flex; justify-content: space-between; align-items: center;
    padding: 0.4rem 0;
    border-bottom: 1px solid rgba(148, 163, 184, 0.04);
}
.critical-row:last-child { border-bottom: none; }

.critical-label { font-size: 0.75rem; font-weight: 600; color: var(--color-text-muted); }
.critical-value { font-size: 0.9rem; font-weight: 700; color: var(--color-text); font-variant-numeric: tabular-nums; }

/* -- Main View ---------------------------------------------------- */
.main-view { width: 100%; }

.results-strip {
    display: grid; grid-template-columns: repeat(2, 1fr);
    gap: 0.6rem; margin-bottom: 0.75rem;
}

.result-card {
    background: var(--color-surface);
    border: 1px solid rgba(148, 163, 184, 0.06);
    border-radius: var(--radius); padding: 0.75rem; text-align: center;
}

.result-label {
    display: block; font-size: 0.65rem; font-weight: 600;
    text-transform: uppercase; letter-spacing: 0.06em;
    color: var(--color-text-muted); margin-bottom: 0.2rem;
}

.result-value {
    display: block; font-size: 1.1rem; font-weight: 700;
    font-variant-numeric: tabular-nums; color: var(--color-text);
}

.status-card.good { border-color: var(--color-safe); }
.status-card.good .result-value { color: var(--color-safe); }
.status-card.marginal { border-color: var(--color-warning); }
.status-card.marginal .result-value { color: var(--color-warning); }
.status-card.window { border-color: var(--color-danger); }
.status-card.window .result-value { color: var(--color-danger); }

/* SVG Viewport */
.svg-viewport {
    background: var(--color-surface);
    border: 1px solid rgba(148, 163, 184, 0.06);
    border-radius: var(--radius-lg);
    padding: 0.75rem 1rem;
    overflow: hidden;
}

.section-title {
    font-size: 0.75rem; font-weight: 700; text-transform: uppercase;
    letter-spacing: 0.06em; color: var(--color-accent);
    margin-bottom: 0.4rem; text-align: center;
}

#gemSvg { width: 100%; height: auto; min-height: 300px; }

/* Legend */
.legend {
    display: flex; flex-wrap: wrap; gap: 0.75rem;
    justify-content: center; margin-top: 0.5rem; padding: 0.5rem;
}

.legend-item {
    display: flex; align-items: center; gap: 0.35rem;
    font-size: 0.72rem; color: var(--color-text-muted); font-weight: 500;
}

.legend-swatch { width: 14px; height: 10px; border-radius: 2px; }
.crown-swatch { background: var(--color-crown); opacity: 0.6; }
.pavilion-swatch { background: var(--color-pavilion); opacity: 0.6; }

.legend-line { width: 18px; height: 2px; border-radius: 1px; }
.ray-in-line { background: var(--color-ray-in); }
.ray-reflect-line { background: var(--color-ray-reflect); }
.ray-exit-line { background: var(--color-ray-exit); }
.ray-leak-line { background: var(--color-ray-leak); }

/* Tier Table */
.table-section {
    margin-top: 0.75rem;
    background: var(--color-surface);
    border: 1px solid rgba(148, 163, 184, 0.06);
    border-radius: var(--radius-lg);
    padding: 1rem;
}

.table-section h3 {
    font-size: 0.8rem; font-weight: 700; text-transform: uppercase;
    letter-spacing: 0.06em; color: var(--color-accent);
    margin-bottom: 0.75rem;
}

.tier-table {
    width: 100%; border-collapse: collapse; font-size: 0.82rem;
}

.tier-table th {
    background: var(--color-surface-alt);
    color: var(--color-text-muted);
    font-size: 0.7rem; font-weight: 700; text-transform: uppercase;
    letter-spacing: 0.05em; padding: 0.6rem 0.75rem;
    text-align: left;
    border-bottom: 1px solid rgba(148, 163, 184, 0.1);
}

.tier-table td {
    padding: 0.5rem 0.75rem;
    border-bottom: 1px solid rgba(148, 163, 184, 0.05);
    color: var(--color-text); font-variant-numeric: tabular-nums;
}

.tier-table .above-critical { color: var(--color-safe); font-weight: 600; }
.tier-table .below-critical { color: var(--color-danger); font-weight: 600; }

/* Animations */
@keyframes rayPulse {
    0%, 100% { opacity: 0.7; }
    50% { opacity: 1; }
}

.ray-animated {
    animation: rayPulse 1.5s ease-in-out infinite;
}

/* -- Footer ------------------------------------------------------- */
.app-footer {
    margin-top: 2rem; text-align: center;
    font-size: 0.75rem; color: var(--color-text-muted);
}

/* ================================================================
   RESPONSIVE — Desktop
   ================================================================ */
@media (min-width: 768px) {
    .ad-mobile { display: none; }
    .ad-desktop { display: flex; }

    .dashboard { flex-direction: row; align-items: flex-start; }

    .sidebar { width: 300px; flex-shrink: 0; }
    .main-view { flex: 1; min-width: 0; }
    .results-strip { grid-template-columns: repeat(4, 1fr); }
}

/* ═══════════════ AFFILIATE & SEO ═══════════════ */
.seo-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1.5rem;
    margin: 2rem 0;
}
.seo-card h2 {
    color: var(--color-accent);
    margin-bottom: 0.5rem;
    font-size: 1.25rem;
}
.seo-card p {
    color: var(--color-text-muted);
    line-height: 1.6;
}
.affiliate-gear a {
    color: var(--color-accent);
    font-weight: 600;
    text-decoration: none;
}
.affiliate-gear a:hover {
    color: var(--color-text);
    text-decoration: underline;
}