/* fcc-light — site-specific Field Bulletin layer. * * Per-site accent: sunlight lemon yellow — the color of a quantum-dot * solar cell's peak emission and the bright lemon of a halogen lamp. * Distinct from morse signal-amber (#f5c43c) by being cleaner and more * lemon vs. morse's mustard. */ /* !important required because /shared/fcc-theme-boot.js writes --accent as inline-style on , beating stylesheet specificity. */ :root, html[data-mode="dark"] { --accent: #fde047 !important; --accent-2: #fef08a !important; --accent-wash: color-mix(in srgb, #fde047 12%, transparent) !important; --accent-ink: #0a0b0d !important; } html[data-mode="light"] { --accent: #a16207 !important; --accent-2: #b8770e !important; --accent-wash: color-mix(in srgb, #a16207 8%, transparent) !important; --accent-ink: #ffffff !important; } /* ── Hero — Ray tracer ──────────────────────────────────────── */ .hero-card { padding: 1.75rem 1.5rem 1.5rem; } .hero-lab { display: flex; flex-direction: column; gap: 0.85rem; } .hero-canvas { width: 100%; height: 420px; display: block; background: var(--bg); border-top: 1px solid var(--border); cursor: crosshair; } .hero-controls { display: flex; gap: 0.75rem; flex-wrap: wrap; align-items: end; } .hero-controls .control-group { flex: 0 0 auto; min-width: 180px; } .component-palette { display: flex; gap: 0.4rem; flex-wrap: wrap; } .component-btn { font: 500 0.74rem/1 var(--mono); letter-spacing: 0.04em; padding: 0.45rem 0.85rem; border-radius: var(--r-1); background: transparent; border: 1px solid var(--border); color: var(--ink-3, var(--dim)); cursor: pointer; transition: color var(--dur-1) var(--ease-in-out), border-color var(--dur-1) var(--ease-in-out), background var(--dur-1) var(--ease-in-out); } .component-btn:hover { color: var(--ink-2, var(--text)); border-color: var(--rule-strong); } .component-btn.active { color: var(--accent); border-color: var(--accent); background: var(--accent-wash); } /* ── Snell's Law ────────────────────────────────────────────── */ .snell-layout { display: flex; flex-direction: column; gap: 0.85rem; } .snell-controls { display: grid; gap: 0.75rem; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); } .snell-canvas { width: 100%; height: 320px; display: block; background: var(--bg); border-top: 1px solid var(--border); } .snell-result { padding: 0.85rem 1rem; background: var(--panel-2); border-top: 1px solid var(--border); font: 500 0.95rem var(--mono); color: var(--accent); font-feature-settings: "tnum" 1, "zero" 1; letter-spacing: -0.01em; } /* ── EM Spectrum ────────────────────────────────────────────── */ .spectrum-layout { display: flex; flex-direction: column; gap: 0.85rem; } .spectrum-bar { width: 100%; height: 80px; background: linear-gradient( 90deg, #6c1f7a 0%, /* gamma */ #4f1e9c 8%, /* X-ray */ #5f4cc0 16%, /* UV */ #9b7cc9 22%, /* near-UV */ #5e9bbf 30%, /* visible-violet */ #5dade2 35%, /* blue */ #22d3ee 40%, /* cyan */ #34d399 45%, /* green */ #fde047 50%, /* yellow */ #fb923c 55%, /* orange */ #ef4444 60%, /* red */ #b91c1c 68%, /* near-IR */ #7c2d12 76%, /* IR */ #c2410c 86%, /* microwave */ #78350f 100% /* radio */ ); cursor: pointer; border-top: 1px solid var(--border); position: relative; } .spectrum-info { padding: 0.85rem 1rem; background: var(--panel-2); border-top: 1px solid var(--border); font: 500 0.92rem var(--serif); color: var(--text); line-height: 1.55; } .spectrum-table { display: grid; gap: 0.5rem; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); } .spectrum-row { padding: 0.65rem 0.85rem; background: var(--panel-2); border-top: 1px solid var(--border); cursor: pointer; display: flex; flex-direction: column; gap: 0.3rem; transition: border-top-color var(--dur-1) var(--ease-in-out); } .spectrum-row:hover, .spectrum-row.active { border-top-color: var(--accent); } .spectrum-row-name { font: 600 0.92rem var(--serif); color: var(--text); } .spectrum-row-range { font: 500 0.78rem var(--mono); color: var(--accent); font-feature-settings: "tnum" 1, "zero" 1; } .spectrum-row-use { font: 500 0.7rem/1 var(--sans); letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-3, var(--dim)); } /* ── Inverse Square Law ─────────────────────────────────────── */ .inverse-layout { display: flex; flex-direction: column; gap: 0.85rem; } .inverse-controls { display: grid; gap: 0.75rem; grid-template-columns: 1fr; } .inverse-visual { width: 100%; height: 220px; background: var(--bg); border-top: 1px solid var(--border); position: relative; overflow: hidden; } .inverse-examples { display: grid; gap: 0.5rem; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); } .inverse-example { padding: 0.7rem 0.9rem; background: var(--panel-2); border-top: 1px solid var(--border); } .inverse-example-label { display: block; font: 500 0.66rem/1 var(--sans); letter-spacing: 0.18em; text-transform: uppercase; color: var(--ink-3, var(--dim)); margin-bottom: 0.35rem; } .inverse-example-value { display: block; font: 500 0.95rem var(--mono); color: var(--accent); font-feature-settings: "tnum" 1, "zero" 1; } @media (max-width: 720px) { .hero-canvas { height: 320px; } .snell-canvas { height: 240px; } .spectrum-bar { height: 60px; } } @media (max-width: 480px) { .hero-canvas { height: 260px; } }