/* luminant.dev — illuminated interface framework */

:root {
    --void: #000000;
    --void-soft: #0a0a12;
    --void-elev: #11111c;
    --white: #ffffff;
    --text: #c8c8d0;
    --text-dim: #7a7a86;
    --red: #ff3333;
    --orange: #ff8c33;
    --yellow: #ffd633;
    --green: #33ff88;
    --blue: #3388ff;
    --violet: #8833ff;
    --display: 'Space Grotesk', 'Inter', system-ui, sans-serif;
    --body: 'Inter', system-ui, sans-serif;
    --code: 'JetBrains Mono', 'Menlo', monospace;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    background: var(--void);
    color: var(--text);
    font-family: var(--body);
    font-size: 16px;
    line-height: 1.7;
    overflow-x: hidden;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    position: relative;
}

/* ---------- Background light ray field ---------- */
.ray-field {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.ray-field::before,
.ray-field::after {
    content: '';
    position: absolute;
    left: 50%;
    top: 30vh;
    width: 1px;
    height: 200vh;
    background: linear-gradient(180deg, transparent, var(--white), transparent);
    opacity: 0.03;
    transform-origin: top center;
}

.ray-field::before {
    transform: translateX(-50%) rotate(2deg);
}

.ray-field::after {
    transform: translateX(-50%) rotate(-2deg);
    background: linear-gradient(180deg, transparent, var(--blue), transparent);
}

.ray {
    position: absolute;
    top: 18vh;
    left: 50%;
    width: 1px;
    height: 140vh;
    transform-origin: top center;
    opacity: 0.03;
}

/* ---------- Top bar ---------- */
.topbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 50;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem 2.5rem;
    background: linear-gradient(180deg, rgba(0,0,0,0.85), rgba(0,0,0,0.4) 70%, transparent);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-family: var(--display);
    font-weight: 500;
    color: var(--white);
    letter-spacing: -0.02em;
}

.brand-mark {
    width: 14px;
    height: 14px;
    clip-path: polygon(50% 0%, 0% 100%, 100% 100%);
    background: var(--white);
    box-shadow: 0 0 14px rgba(255,255,255,0.6);
    display: inline-block;
}

.brand-mark.small {
    width: 10px;
    height: 10px;
}

.brand-name {
    font-size: 1rem;
}

.brand-dot {
    color: var(--green);
    text-shadow: 0 0 8px rgba(51,255,136,0.6);
}

.nav {
    display: flex;
    gap: 2rem;
}

.nav-link {
    color: var(--text);
    text-decoration: none;
    font-family: var(--code);
    font-size: 0.78rem;
    letter-spacing: 0.04em;
    text-transform: lowercase;
    transition: color 0.3s ease, text-shadow 0.3s ease;
    position: relative;
}

.nav-link::before {
    content: '·';
    color: var(--text-dim);
    margin-right: 0.4rem;
}

.nav-link:hover {
    color: var(--white);
    text-shadow: 0 0 10px rgba(255,255,255,0.4);
}

.luminance-meter {
    display: flex;
    align-items: baseline;
    gap: 0.55rem;
    font-family: var(--code);
    font-size: 0.78rem;
    color: var(--text);
    border: 1px solid rgba(255,255,255,0.08);
    padding: 0.4rem 0.8rem;
    border-radius: 999px;
    background: rgba(10,10,18,0.6);
}

.lm-label {
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    font-size: 0.66rem;
}

.lm-value {
    color: var(--white);
    text-shadow: 0 0 12px rgba(255,255,255,0.5);
    font-variant-numeric: tabular-nums;
}

/* ---------- Hero ---------- */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 8rem 1.5rem 4rem;
    z-index: 1;
}

.prism-stage {
    position: relative;
    width: 100%;
    max-width: 1200px;
    height: 280px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 4rem;
}

.input-beam {
    position: absolute;
    top: 50%;
    right: calc(50% + 60px);
    width: 30vw;
    max-width: 360px;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--white));
    box-shadow: 0 0 8px rgba(255,255,255,0.6), 0 0 16px rgba(255,255,255,0.3);
    transform-origin: right center;
}

.input-beam::after {
    content: '';
    position: absolute;
    right: -3px;
    top: -2px;
    width: 6px;
    height: 6px;
    background: var(--white);
    border-radius: 50%;
    box-shadow: 0 0 12px rgba(255,255,255,0.8);
}

.prism {
    position: relative;
    width: 140px;
    height: 122px;
    clip-path: polygon(50% 0%, 0% 100%, 100% 100%);
    background: linear-gradient(135deg, rgba(255,255,255,0.06), rgba(136,51,255,0.08), rgba(51,136,255,0.05));
    border: 1px solid rgba(255,255,255,0.18);
    box-shadow: 0 0 40px rgba(255,255,255,0.12), inset 0 0 30px rgba(255,255,255,0.05);
    z-index: 2;
    animation: prism-breathe 6s ease-in-out infinite;
}

.prism::before,
.prism::after {
    content: '';
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.prism::before {
    background: linear-gradient(120deg, rgba(255,255,255,0.12) 0%, transparent 50%);
    mix-blend-mode: screen;
}

.prism::after {
    background: linear-gradient(60deg, transparent 50%, rgba(136,51,255,0.18) 100%);
    mix-blend-mode: screen;
}

.prism-vertex {
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--white);
    border-radius: 50%;
    box-shadow: 0 0 8px rgba(255,255,255,0.9);
    z-index: 3;
}

.prism-vertex.v1 { top: -2px; left: 50%; transform: translateX(-50%); }
.prism-vertex.v2 { bottom: -2px; left: -2px; }
.prism-vertex.v3 { bottom: -2px; right: -2px; }

@keyframes prism-breathe {
    0%, 100% { box-shadow: 0 0 40px rgba(255,255,255,0.12), inset 0 0 30px rgba(255,255,255,0.05); }
    50% { box-shadow: 0 0 70px rgba(255,255,255,0.22), inset 0 0 50px rgba(255,255,255,0.09); }
}

.output-beams {
    position: absolute;
    top: 50%;
    left: calc(50% + 60px);
    width: 0;
    height: 0;
}

.beam {
    position: absolute;
    left: 0;
    top: 0;
    width: 30vw;
    max-width: 360px;
    height: 1px;
    transform-origin: left center;
}

.beam-red {
    background: linear-gradient(90deg, var(--red), transparent);
    box-shadow: 0 0 6px rgba(255,51,51,0.5);
    transform: rotate(-9deg);
}

.beam-orange {
    background: linear-gradient(90deg, var(--orange), transparent);
    box-shadow: 0 0 6px rgba(255,140,51,0.5);
    transform: rotate(-6deg);
}

.beam-yellow {
    background: linear-gradient(90deg, var(--yellow), transparent);
    box-shadow: 0 0 6px rgba(255,214,51,0.5);
    transform: rotate(-3deg);
}

.beam-green {
    background: linear-gradient(90deg, var(--green), transparent);
    box-shadow: 0 0 6px rgba(51,255,136,0.5);
    transform: rotate(0deg);
}

.beam-cyan {
    background: linear-gradient(90deg, #33ddff, transparent);
    box-shadow: 0 0 6px rgba(51,221,255,0.5);
    transform: rotate(3deg);
}

.beam-blue {
    background: linear-gradient(90deg, var(--blue), transparent);
    box-shadow: 0 0 6px rgba(51,136,255,0.5);
    transform: rotate(6deg);
}

.beam-violet {
    background: linear-gradient(90deg, var(--violet), transparent);
    box-shadow: 0 0 6px rgba(136,51,255,0.5);
    transform: rotate(9deg);
}

.hero-text {
    text-align: center;
    max-width: 720px;
    z-index: 2;
}

.hero-title {
    font-family: var(--display);
    font-weight: 500;
    font-size: clamp(2.2rem, 6vw, 4.4rem);
    letter-spacing: -0.03em;
    color: var(--white);
    text-shadow: 0 0 24px rgba(255,255,255,0.3), 0 0 48px rgba(255,255,255,0.12);
    margin-bottom: 1rem;
    line-height: 1;
}

.hero-tagline {
    font-family: var(--body);
    font-weight: 300;
    font-size: clamp(1rem, 1.6vw, 1.25rem);
    color: var(--text);
    margin-bottom: 1.5rem;
    line-height: 1.5;
}

.hero-meta {
    display: inline-flex;
    align-items: center;
    gap: 0.9rem;
    font-family: var(--code);
    font-size: 0.78rem;
    color: var(--text-dim);
    padding: 0.5rem 1rem;
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 999px;
    background: rgba(10,10,18,0.5);
}

.meta-tag {
    color: var(--text);
}

.meta-sep {
    width: 3px;
    height: 3px;
    border-radius: 50%;
    background: var(--text-dim);
}

.hero-scroll {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    font-family: var(--code);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--text-dim);
}

.scroll-line {
    width: 1px;
    height: 32px;
    background: linear-gradient(180deg, transparent, var(--white));
    opacity: 0.5;
    animation: scroll-pulse 2.4s ease-in-out infinite;
}

@keyframes scroll-pulse {
    0%, 100% { opacity: 0.2; transform: scaleY(0.6); }
    50% { opacity: 0.7; transform: scaleY(1); }
}

/* ---------- Sections ---------- */
section {
    position: relative;
    z-index: 1;
    padding: 7rem 1.5rem;
}

.section-head {
    max-width: 720px;
    margin: 0 auto 4rem;
    text-align: center;
}

.eyebrow {
    font-family: var(--code);
    font-size: 0.78rem;
    color: var(--text-dim);
    letter-spacing: 0.04em;
    margin-bottom: 1rem;
}

.section-title {
    font-family: var(--display);
    font-weight: 500;
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    letter-spacing: -0.02em;
    color: var(--white);
    text-shadow: 0 0 16px rgba(255,255,255,0.18);
    line-height: 1.15;
    margin-bottom: 1.25rem;
}

.section-lede {
    font-size: 1.05rem;
    line-height: 1.7;
    color: var(--text);
    max-width: 600px;
    margin: 0 auto;
}

/* ---------- Light Library ---------- */
.library {
    background: var(--void);
}

.panel-stack {
    max-width: 720px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
}

.panel {
    position: relative;
    background: var(--void-soft);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: 14px;
    padding: 2.25rem;
    overflow: hidden;
    transition: box-shadow 0.45s ease, transform 0.45s ease, border-color 0.45s ease;
    isolation: isolate;
}

.panel::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(80% 60% at 0% 0%, rgba(255,255,255,0.025), transparent 60%);
    pointer-events: none;
    z-index: -1;
}

.panel-glow {
    position: absolute;
    inset: -1px;
    border-radius: 14px;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.45s ease;
    box-shadow: inset 0 0 30px rgba(255,255,255,0.05);
}

.panel-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
    font-family: var(--code);
    font-size: 0.75rem;
    letter-spacing: 0.04em;
}

.panel-index {
    color: var(--text-dim);
}

.panel-wave {
    color: var(--text);
    text-transform: lowercase;
}

.panel-title {
    font-family: var(--display);
    font-weight: 500;
    font-size: clamp(1.5rem, 2.6vw, 1.95rem);
    color: var(--white);
    letter-spacing: -0.02em;
    margin-bottom: 0.85rem;
    line-height: 1.15;
}

.panel-body {
    color: var(--text);
    font-size: 0.97rem;
    line-height: 1.75;
    margin-bottom: 1.5rem;
}

.panel-code {
    background: rgba(0,0,0,0.55);
    border: 1px solid rgba(255,255,255,0.05);
    border-radius: 8px;
    padding: 1rem 1.1rem;
    font-family: var(--code);
    font-size: 0.82rem;
    line-height: 1.7;
    color: var(--text);
    overflow-x: auto;
}

.panel-code code {
    font-family: inherit;
    color: inherit;
}

/* token colors per panel — set via shared rules below */
.tk-key { color: var(--violet); }
.tk-fn { color: var(--green); }
.tk-str { color: var(--yellow); }
.tk-num { color: var(--orange); }
.tk-typ { color: var(--blue); }

/* spectrum-tinted glows per panel */
.panel-red {
    border-color: rgba(255,51,51,0.18);
    box-shadow: 0 0 30px rgba(255,51,51,0.15), 0 0 60px rgba(255,51,51,0.05), inset 0 0 12px rgba(255,51,51,0.04);
}
.panel-red .panel-wave,
.panel-red .panel-title { color: #ff7a6e; }
.panel-red .panel-title { color: #ff9285; text-shadow: 0 0 18px rgba(255,51,51,0.35); }
.panel-red:hover {
    box-shadow: 0 0 60px rgba(255,51,51,0.3), 0 0 120px rgba(255,51,51,0.1), inset 0 0 24px rgba(255,51,51,0.08);
    border-color: rgba(255,51,51,0.4);
    transform: translateY(-2px);
}

.panel-orange {
    border-color: rgba(255,140,51,0.18);
    box-shadow: 0 0 30px rgba(255,140,51,0.15), 0 0 60px rgba(255,140,51,0.05), inset 0 0 12px rgba(255,140,51,0.04);
}
.panel-orange .panel-wave { color: #ffb273; }
.panel-orange .panel-title { color: #ffc78f; text-shadow: 0 0 18px rgba(255,140,51,0.35); }
.panel-orange:hover {
    box-shadow: 0 0 60px rgba(255,140,51,0.3), 0 0 120px rgba(255,140,51,0.1), inset 0 0 24px rgba(255,140,51,0.08);
    border-color: rgba(255,140,51,0.4);
    transform: translateY(-2px);
}

.panel-yellow {
    border-color: rgba(255,214,51,0.18);
    box-shadow: 0 0 30px rgba(255,214,51,0.15), 0 0 60px rgba(255,214,51,0.05), inset 0 0 12px rgba(255,214,51,0.04);
}
.panel-yellow .panel-wave { color: #ffe072; }
.panel-yellow .panel-title { color: #ffeb9a; text-shadow: 0 0 18px rgba(255,214,51,0.35); }
.panel-yellow:hover {
    box-shadow: 0 0 60px rgba(255,214,51,0.3), 0 0 120px rgba(255,214,51,0.1), inset 0 0 24px rgba(255,214,51,0.08);
    border-color: rgba(255,214,51,0.4);
    transform: translateY(-2px);
}

.panel-green {
    border-color: rgba(51,255,136,0.18);
    box-shadow: 0 0 30px rgba(51,255,136,0.15), 0 0 60px rgba(51,255,136,0.05), inset 0 0 12px rgba(51,255,136,0.04);
}
.panel-green .panel-wave { color: #71ffac; }
.panel-green .panel-title { color: #9affc4; text-shadow: 0 0 18px rgba(51,255,136,0.35); }
.panel-green:hover {
    box-shadow: 0 0 60px rgba(51,255,136,0.3), 0 0 120px rgba(51,255,136,0.1), inset 0 0 24px rgba(51,255,136,0.08);
    border-color: rgba(51,255,136,0.4);
    transform: translateY(-2px);
}

.panel-blue {
    border-color: rgba(51,136,255,0.18);
    box-shadow: 0 0 30px rgba(51,136,255,0.15), 0 0 60px rgba(51,136,255,0.05), inset 0 0 12px rgba(51,136,255,0.04);
}
.panel-blue .panel-wave { color: #73aeff; }
.panel-blue .panel-title { color: #95c2ff; text-shadow: 0 0 18px rgba(51,136,255,0.35); }
.panel-blue:hover {
    box-shadow: 0 0 60px rgba(51,136,255,0.3), 0 0 120px rgba(51,136,255,0.1), inset 0 0 24px rgba(51,136,255,0.08);
    border-color: rgba(51,136,255,0.4);
    transform: translateY(-2px);
}

.panel-violet {
    border-color: rgba(136,51,255,0.18);
    box-shadow: 0 0 30px rgba(136,51,255,0.15), 0 0 60px rgba(136,51,255,0.05), inset 0 0 12px rgba(136,51,255,0.04);
}
.panel-violet .panel-wave { color: #ae73ff; }
.panel-violet .panel-title { color: #c195ff; text-shadow: 0 0 18px rgba(136,51,255,0.35); }
.panel-violet:hover {
    box-shadow: 0 0 60px rgba(136,51,255,0.3), 0 0 120px rgba(136,51,255,0.1), inset 0 0 24px rgba(136,51,255,0.08);
    border-color: rgba(136,51,255,0.4);
    transform: translateY(-2px);
}

/* ---------- Spectrum tool ---------- */
.spectrum-section {
    background: var(--void);
}

.spectrum-tool {
    max-width: 960px;
    margin: 0 auto;
    background: var(--void-soft);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 14px;
    padding: 2.5rem;
    box-shadow: 0 0 40px rgba(136,51,255,0.06), 0 0 80px rgba(51,136,255,0.04);
}

.spectrum-bar {
    position: relative;
    height: 14px;
    border-radius: 999px;
    background: linear-gradient(90deg, #8833ff 0%, #3388ff 18%, #33ddff 32%, #33ff88 48%, #ffd633 62%, #ff8c33 78%, #ff3333 100%);
    box-shadow: 0 0 30px rgba(136,51,255,0.25), 0 0 60px rgba(51,136,255,0.18), 0 0 90px rgba(255,51,51,0.12);
    margin: 1.5rem 0 3.5rem;
    cursor: ew-resize;
}

.spectrum-cursor {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 18px;
    height: 28px;
    transform: translate(-50%, -50%);
    background: var(--white);
    border-radius: 4px;
    box-shadow: 0 0 14px rgba(255,255,255,0.7), 0 0 30px rgba(255,255,255,0.4);
    cursor: grab;
    z-index: 3;
    transition: box-shadow 0.3s ease;
}

.spectrum-cursor:hover {
    box-shadow: 0 0 20px rgba(255,255,255,0.9), 0 0 50px rgba(255,255,255,0.6);
}

.spectrum-tick {
    position: absolute;
    top: 22px;
    transform: translateX(-50%);
    font-family: var(--code);
    font-size: 0.68rem;
    color: var(--text-dim);
    pointer-events: none;
}

.spectrum-tick b {
    font-weight: 400;
}

.spectrum-readout {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 1.25rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.06);
}

.readout-cell {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.readout-label {
    font-family: var(--code);
    font-size: 0.66rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-dim);
}

.readout-value {
    font-family: var(--display);
    font-weight: 500;
    font-size: 1.15rem;
    color: var(--white);
    letter-spacing: -0.01em;
    transition: color 0.3s ease, text-shadow 0.3s ease;
}

/* ---------- Install ---------- */
.install {
    background: var(--void);
}

.install-grid {
    max-width: 1120px;
    margin: 0 auto 4rem;
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 2rem;
}

.install-card,
.snippet-card {
    background: var(--void-soft);
    border: 1px solid rgba(255,255,255,0.07);
    border-radius: 14px;
    overflow: hidden;
    box-shadow: 0 0 40px rgba(51,255,136,0.06);
    transition: box-shadow 0.4s ease;
}

.install-card:hover {
    box-shadow: 0 0 60px rgba(51,255,136,0.16);
}

.snippet-card:hover {
    box-shadow: 0 0 60px rgba(51,136,255,0.16);
}

.install-tabs {
    display: flex;
    border-bottom: 1px solid rgba(255,255,255,0.06);
    background: rgba(0,0,0,0.4);
}

.install-tab {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-dim);
    font-family: var(--code);
    font-size: 0.82rem;
    padding: 1rem;
    cursor: pointer;
    transition: color 0.3s ease, background 0.3s ease;
    border-right: 1px solid rgba(255,255,255,0.04);
}

.install-tab:last-child {
    border-right: none;
}

.install-tab.is-active {
    color: var(--white);
    background: rgba(51,255,136,0.06);
    box-shadow: inset 0 -1px 0 rgba(51,255,136,0.5);
    text-shadow: 0 0 10px rgba(51,255,136,0.4);
}

.install-tab:hover {
    color: var(--white);
}

.install-cmd {
    padding: 2.25rem 1.75rem;
    font-family: var(--code);
    font-size: 0.92rem;
    color: var(--white);
    line-height: 1.6;
    overflow-x: auto;
}

.install-cmd code {
    font-family: inherit;
}

.install-cmd .prompt {
    color: var(--green);
    text-shadow: 0 0 8px rgba(51,255,136,0.5);
    margin-right: 0.6rem;
}

.install-foot {
    padding: 0 1.75rem 1.75rem;
    color: var(--text-dim);
    font-size: 0.85rem;
}

.snippet-head {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.85rem 1.25rem;
    border-bottom: 1px solid rgba(255,255,255,0.06);
    background: rgba(0,0,0,0.4);
}

.snippet-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255,255,255,0.12);
}

.snippet-dot:nth-child(1) { background: var(--red); box-shadow: 0 0 6px rgba(255,51,51,0.5); }
.snippet-dot:nth-child(2) { background: var(--yellow); box-shadow: 0 0 6px rgba(255,214,51,0.5); }
.snippet-dot:nth-child(3) { background: var(--green); box-shadow: 0 0 6px rgba(51,255,136,0.5); }

.snippet-name {
    margin-left: 0.5rem;
    font-family: var(--code);
    font-size: 0.78rem;
    color: var(--text-dim);
}

.snippet-body {
    padding: 1.5rem 1.75rem;
    font-family: var(--code);
    font-size: 0.85rem;
    line-height: 1.75;
    color: var(--text);
    overflow-x: auto;
}

.snippet-body code {
    font-family: inherit;
}

.cli-row {
    max-width: 1120px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: 12px;
    overflow: hidden;
    background: var(--void-soft);
}

.cli-cell {
    padding: 1.5rem 1.75rem;
    border-right: 1px solid rgba(255,255,255,0.06);
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.cli-cell:last-child {
    border-right: none;
}

.cli-key {
    font-family: var(--code);
    font-size: 0.7rem;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.cli-val {
    font-family: var(--display);
    font-weight: 500;
    font-size: 1.15rem;
    color: var(--white);
    letter-spacing: -0.01em;
    text-shadow: 0 0 10px rgba(255,255,255,0.18);
}

.cli-sub {
    font-size: 0.85rem;
    color: var(--text);
}

/* ---------- Footer ---------- */
.footer {
    position: relative;
    z-index: 1;
    padding-top: 4rem;
    border-top: 1px solid rgba(255,255,255,0.04);
    background: var(--void);
}

.footer-content {
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 1.5rem 3rem;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 0.55rem;
    font-family: var(--display);
    color: var(--white);
}

.footer-line {
    color: var(--text-dim);
    font-size: 0.85rem;
    font-family: var(--code);
}

.footer-links {
    display: flex;
    gap: 1.5rem;
}

.footer-links a {
    color: var(--text);
    text-decoration: none;
    font-family: var(--code);
    font-size: 0.82rem;
    transition: color 0.3s ease, text-shadow 0.3s ease;
}

.footer-links a:hover {
    color: var(--white);
    text-shadow: 0 0 10px rgba(255,255,255,0.4);
}

.spectrum-bar-footer {
    height: 4px;
    background: linear-gradient(90deg, #ff3333, #ff8c33, #ffd633, #33ff88, #3388ff, #8833ff);
    box-shadow: 0 -8px 30px rgba(255,140,51,0.18), 0 -4px 50px rgba(51,136,255,0.18);
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
    .topbar { padding: 1rem 1.25rem; }
    .nav { display: none; }

    .install-grid { grid-template-columns: 1fr; }
    .cli-row { grid-template-columns: repeat(2, 1fr); }
    .cli-cell:nth-child(2) { border-right: none; }
    .cli-cell:nth-child(1),
    .cli-cell:nth-child(2) { border-bottom: 1px solid rgba(255,255,255,0.06); }

    .spectrum-readout { grid-template-columns: repeat(2, 1fr); gap: 1rem; }

    .input-beam { max-width: 35vw; }
    .beam { max-width: 35vw; }

    .footer-content { flex-direction: column; text-align: center; }
}

@media (max-width: 540px) {
    section { padding: 5rem 1rem; }
    .panel { padding: 1.5rem; }
    .spectrum-tool { padding: 1.5rem; }
    .cli-row { grid-template-columns: 1fr; }
    .cli-cell { border-right: none; border-bottom: 1px solid rgba(255,255,255,0.06); }
    .cli-cell:last-child { border-bottom: none; }

    .prism { width: 100px; height: 87px; }
    .input-beam, .beam { max-width: 28vw; }
    .input-beam { right: calc(50% + 45px); }
    .output-beams { left: calc(50% + 45px); }
}