:root {
    --c-bg-primary: #0A0C10;
    --c-bg-secondary: #0E1117;
    --c-bg-tertiary: #121620;
    --c-text-primary: #7ABFA3;
    --c-text-secondary: #4A8B73;
    --c-text-tertiary: #2D5E4A;
    --c-accent-gold: #D4A843;
    --c-accent-paper: #E8DCC8;
    --c-complement: #B8863A;
    --c-glow: #C8E6D8;
    --c-stain: #6B4E2F;
    --c-border: #1A2030;
    --c-selection: #1A3A2E;
    --f-display: 'Libre Baskerville', Georgia, serif;
    --f-mono: 'IBM Plex Mono', monospace;
    --measure: 52ch;
    color-scheme: dark;
}

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

::selection {
    background: var(--c-selection);
    color: var(--c-glow);
}

body {
    background: var(--c-bg-primary);
    color: var(--c-text-primary);
    font-family: var(--f-mono);
    font-weight: 400;
    font-size: clamp(0.875rem, 1.1vw, 1rem);
    line-height: 1.75;
    letter-spacing: 0.02em;
    scroll-behavior: smooth;
    /* CRT edge glow */
    box-shadow: inset 0 0 80px 20px rgba(122, 191, 163, 0.03);
}

/* ====== SCANLINE ====== */
.scanline {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 100;
    overflow: hidden;
}

.scanline::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    height: 1px;
    background: rgba(200, 230, 216, 0.02);
    animation: scanlineMove 25s linear infinite;
}

@keyframes scanlineMove {
    from { transform: translateY(-100vh); }
    to { transform: translateY(100vh); }
}

/* ====== SHOOTING STAR ====== */
.shooting-star {
    position: fixed;
    width: 80px;
    height: 1px;
    background: linear-gradient(to right, transparent, var(--c-glow));
    transform: rotate(-35deg);
    opacity: 0;
    pointer-events: none;
    z-index: 90;
    transition: none;
}

.shooting-star.active {
    animation: shootStar 0.8s ease-out forwards;
}

@keyframes shootStar {
    0% { opacity: 0.8; transform: translate(0, 0) rotate(-35deg); }
    100% { opacity: 0; transform: translate(200px, 120px) rotate(-35deg); }
}

/* ====== SCENES ====== */
.scene {
    position: relative;
    overflow: hidden;
}

/* ====== BOOT SEQUENCE ====== */
.scene-boot {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    /* Edge burn vignette */
    box-shadow: inset 0 0 300px 100px rgba(10, 12, 16, 0.9);
}

.boot-content {
    padding-left: 38.2%;
    padding-top: 10vh;
    max-width: var(--measure);
}

.terminal-prompt {
    font-family: var(--f-mono);
    font-weight: 400;
    font-size: clamp(0.875rem, 1.1vw, 1rem);
    color: var(--c-text-primary);
    margin-bottom: 16px;
    white-space: nowrap;
}

.prompt-mini {
    font-size: 0.8rem;
    color: var(--c-text-secondary);
    margin-bottom: 12px;
}

.boot-greeting {
    font-family: var(--f-display);
    font-weight: 400;
    font-size: clamp(1.1rem, 1.5vw, 1.4rem);
    color: var(--c-accent-paper);
    line-height: 1.65;
    max-width: var(--measure);
}

.cursor {
    display: inline-block;
    width: 8px;
    height: 1.2em;
    background: var(--c-glow);
    vertical-align: text-bottom;
    animation: cursorBlink 1.06s step-end infinite;
}

.cursor.typing {
    animation: none;
    opacity: 1;
}

@keyframes cursorBlink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

.scroll-hint {
    position: absolute;
    bottom: 5vh;
    left: 50%;
    transform: translateX(-50%);
    font-family: var(--f-mono);
    font-size: 0.875rem;
    color: var(--c-text-secondary);
    animation: hintBreathe 2s ease-in-out infinite;
}

@keyframes hintBreathe {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 0.6; }
}

/* ====== STAR CHART ====== */
.scene-starchart {
    min-height: 150vh;
    padding: 10vh 0;
    position: relative;
    /* Edge burn */
    box-shadow: inset 0 0 200px 60px rgba(10, 12, 16, 0.8);
}

.star-chart-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(15deg, var(--c-border) 1px, transparent 1px),
        linear-gradient(105deg, var(--c-border) 1px, transparent 1px);
    background-size: 80px 80px;
    opacity: 0.15;
    pointer-events: none;
}

.constellation-cluster {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 24px;
    min-height: 120vh;
}

.constellation-lines {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

.const-line {
    stroke-dasharray: 300;
    stroke-dashoffset: 300;
    transition: stroke-dashoffset 1.2s ease-out;
}

.const-line.drawn {
    stroke-dashoffset: 0;
}

.star-block {
    position: relative;
    max-width: 42ch;
    padding: 24px 20px;
    border-left: 1px solid var(--c-border);
    z-index: 2;
    transition: background 0.3s ease, border-left-color 0.3s ease;
}

.star-block:hover {
    background: var(--c-bg-tertiary);
    border-left-color: rgba(184, 134, 58, 0.4);
}

.star-1 { margin: 8vh 0 0 15%; }
.star-2 { margin: 6vh 0 0 40%; }
.star-3 { margin: 6vh 0 0 55%; }

.named-star {
    width: 6px;
    height: 6px;
    background: var(--c-accent-gold);
    border-radius: 50%;
    position: absolute;
    top: -16px;
    left: 20px;
    animation: starPulse 3s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes starPulse {
    0%, 100% { opacity: 0.6; }
    40% { opacity: 1; }
    60% { opacity: 1; }
}

.star-label {
    font-family: var(--f-mono);
    font-size: 0.7rem;
    letter-spacing: 0.12em;
    color: var(--c-text-secondary);
    position: absolute;
    top: -24px;
    left: 32px;
}

.section-heading {
    font-family: var(--f-display);
    font-weight: 700;
    font-size: clamp(1.4rem, 3.5vw, 2.8rem);
    letter-spacing: 0.18em;
    color: var(--c-accent-paper);
    margin-bottom: 16px;
}

.body-text {
    color: var(--c-text-primary);
    max-width: var(--measure);
    margin-bottom: 12px;
}

/* ====== TRANSIT ZONE ====== */
.scene-transit {
    min-height: 80vh;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding: 0 10vw;
    position: relative;
}

.dot-stars {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.transit-quote {
    max-width: 40ch;
    text-align: right;
}

.transit-text {
    font-family: var(--f-display);
    font-style: italic;
    font-weight: 400;
    font-size: clamp(1rem, 1.3vw, 1.2rem);
    color: var(--c-accent-gold);
    opacity: 0.7;
    line-height: 1.6;
    letter-spacing: 0.04em;
}

.transit-cite {
    font-family: var(--f-mono);
    font-weight: 300;
    font-size: 0.75rem;
    color: var(--c-text-secondary);
    display: block;
    margin-top: 12px;
    font-style: normal;
}

/* ====== ARCHIVE ====== */
.scene-archive {
    min-height: 200vh;
    padding: 10vh 0;
    /* Foxing spots */
    background-image:
        radial-gradient(ellipse at 15% 20%, rgba(107, 78, 47, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 45%, rgba(107, 78, 47, 0.06) 0%, transparent 40%),
        radial-gradient(ellipse at 35% 70%, rgba(107, 78, 47, 0.1) 0%, transparent 45%),
        radial-gradient(ellipse at 65% 85%, rgba(107, 78, 47, 0.07) 0%, transparent 35%);
    box-shadow: inset 0 0 200px 60px rgba(10, 12, 16, 0.8);
}

.archive-cluster {
    max-width: 800px;
    padding: 0 24px;
    margin-bottom: 40vh;
}

.cluster-a {
    margin-left: 10%;
}

.cluster-b {
    margin-left: 30%;
}

.archive-block {
    max-width: 42ch;
    padding: 24px 20px;
    border-left: 1px solid var(--c-border);
    margin-bottom: 32px;
    transition: background 0.3s ease;
}

.archive-block:hover {
    background: var(--c-bg-tertiary);
}

.archive-heading {
    font-family: var(--f-display);
    font-weight: 700;
    font-size: clamp(1.2rem, 2vw, 1.8rem);
    letter-spacing: 0.12em;
    color: var(--c-accent-paper);
    margin-bottom: 12px;
}

/* ====== OBSERVATION LOG ====== */
.scene-log {
    min-height: 120vh;
    padding: 10vh 24px;
    max-width: 800px;
    margin: 0 auto;
}

.ascii-border {
    font-family: var(--f-mono);
    font-size: 0.875rem;
    letter-spacing: 0.3em;
    color: var(--c-text-secondary);
    text-align: center;
    margin-bottom: 60px;
}

.log-entry {
    margin-bottom: 48px;
    max-width: var(--measure);
}

.log-entry:nth-child(odd) {
    margin-left: 5%;
}

.log-entry:nth-child(even) {
    margin-left: 12%;
}

.log-timestamp {
    font-family: var(--f-mono);
    font-weight: 300;
    font-size: 0.75rem;
    color: var(--c-text-secondary);
    display: block;
}

.log-star {
    font-size: 0.8rem;
    color: var(--c-accent-gold);
    display: block;
    margin: 4px 0 8px;
}

/* ====== SIGN-OFF ====== */
.scene-signoff {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 2s ease;
}

.scene-signoff.dimmed {
    background: #060709;
}

.signoff-content {
    text-align: center;
}

.binary-stars {
    width: 60px;
    height: 60px;
    position: relative;
    margin: 40px auto;
    opacity: 0;
    transition: opacity 1s ease;
}

.binary-stars.visible {
    opacity: 1;
}

.orbit-star {
    position: absolute;
    width: 4px;
    height: 4px;
    border-radius: 50%;
    top: 50%;
    left: 50%;
}

.star-gold {
    background: var(--c-accent-gold);
    box-shadow: 0 0 6px rgba(212, 168, 67, 0.5);
    animation: orbitA 12s linear infinite;
}

.star-green {
    background: var(--c-text-primary);
    box-shadow: 0 0 6px rgba(122, 191, 163, 0.5);
    animation: orbitB 12s linear infinite;
}

@keyframes orbitA {
    0% { transform: translate(-2px, -2px) rotate(0deg) translateX(12px) rotate(0deg); }
    100% { transform: translate(-2px, -2px) rotate(360deg) translateX(12px) rotate(-360deg); }
}

@keyframes orbitB {
    0% { transform: translate(-2px, -2px) rotate(180deg) translateX(8px) rotate(-180deg); }
    100% { transform: translate(-2px, -2px) rotate(540deg) translateX(8px) rotate(-540deg); }
}

.domain-label {
    font-family: var(--f-display);
    font-style: italic;
    font-size: 1.333rem;
    color: var(--c-accent-gold);
    opacity: 0;
    transition: opacity 1s ease;
    animation: starPulse 3s cubic-bezier(0.4, 0, 0.6, 1) infinite paused;
}

.domain-label.visible {
    opacity: 1;
    animation-play-state: running;
}

/* ====== REVEAL ANIMATIONS ====== */
[data-reveal] {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94),
                transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

[data-reveal].revealed {
    opacity: 1;
    transform: translateY(0);
}

/* ====== RESPONSIVE ====== */
@media (max-width: 640px) {
    .boot-content {
        padding-left: 20px;
        padding-right: 20px;
    }

    .star-1,
    .star-2,
    .star-3 {
        margin-left: 0;
    }

    .cluster-a,
    .cluster-b {
        margin-left: 0;
    }

    .scene-transit {
        justify-content: center;
        padding: 0 20px;
    }

    .transit-quote {
        text-align: left;
    }

    .constellation-lines {
        display: none;
    }

    .star-chart-grid {
        display: none;
    }

    .scene-transit {
        min-height: 40vh;
    }

    .section-heading {
        font-size: clamp(1.2rem, 6vw, 2rem);
        letter-spacing: 0.08em;
    }
}

/* ====== REDUCED MOTION ====== */
@media (prefers-reduced-motion: reduce) {
    .scanline::after {
        animation: none;
        display: none;
    }

    .shooting-star {
        display: none;
    }

    .named-star {
        animation: none;
        opacity: 0.8;
    }

    .scroll-hint {
        animation: none;
        opacity: 0.5;
    }

    .cursor {
        animation: none;
        opacity: 1;
    }

    .star-gold,
    .star-green {
        animation: none;
    }

    .domain-label {
        animation: none;
    }

    [data-reveal] {
        opacity: 1;
        transform: none;
        transition: none;
    }

    .const-line {
        stroke-dashoffset: 0;
        transition: none;
    }

    body {
        scroll-behavior: auto;
    }
}