/* ============================================================
   opensource.day -- Y2K Futurism x Art Deco Geometric Precision
   Triadic palette: violet / cyan / gold over deep indigo.
   ============================================================ */

:root {
    --c-violet: #7C3AED;
    --c-cyan: #06B6D4;
    --c-gold: #D97706;
    --c-chrome: #C0C0C0;
    --c-indigo: #0F0A2A;
    --c-platinum: #E5E4E2;
    --c-obsidian: #1A1633;
    --c-rose: #EC4899;
    --c-deep-indigo: #1E1B4B;
    --c-soft-silver: #E8E8EC;
    --c-warm-chrome: #D4AF37;
    --c-violet-soft: #8B5CF6;

    --f-display: 'Poiret One', 'Inter', serif;
    --f-deco: 'Josefin Sans', 'Inter', sans-serif;
    --f-body: 'Outfit', 'Inter', sans-serif;
    --f-mono: 'Fira Code', 'Space Mono', monospace;

    --ease-overshoot: cubic-bezier(0.34, 1.56, 0.64, 1);
    --ease-smooth: cubic-bezier(0.22, 0.61, 0.36, 1);
}

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

html {
    scroll-behavior: smooth;
    background: var(--c-indigo);
}

body {
    background: var(--c-indigo);
    color: var(--c-soft-silver);
    font-family: var(--f-body);
    font-size: 16px;
    line-height: 1.65;
    letter-spacing: 0.01em;
    overflow-x: hidden;
    min-height: 100vh;
    position: relative;
}

/* ============================================================
   GRAIN OVERLAY (gives the silver/chrome panels physical texture)
   ============================================================ */
.grain-overlay {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 9999;
    mix-blend-mode: overlay;
    opacity: 0.07;
    background-image:
        repeating-linear-gradient(0deg, rgba(255,255,255,0.04) 0 1px, transparent 1px 3px),
        repeating-linear-gradient(90deg, rgba(0,0,0,0.06) 0 1px, transparent 1px 3px);
}

/* ============================================================
   SECTION MARKERS  (Roman numeral + name in Deco platinum)
   ============================================================ */
.section-marker {
    position: absolute;
    top: 32px;
    left: 32px;
    display: flex;
    align-items: center;
    gap: 14px;
    font-family: var(--f-deco);
    font-weight: 600;
    font-size: 14px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--c-chrome);
    z-index: 5;
}
.section-marker::before {
    content: "";
    width: 28px;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--c-chrome) 30%, var(--c-chrome));
}
.section-numeral {
    font-family: var(--f-display);
    font-size: 22px;
    color: var(--c-warm-chrome);
    letter-spacing: 0.04em;
}
.section-marker-light .section-numeral { color: var(--c-deep-indigo); }
.section-marker-light { color: var(--c-deep-indigo); }
.section-marker-light::before {
    background: linear-gradient(90deg, transparent, var(--c-deep-indigo) 30%, var(--c-deep-indigo));
}

.scene-heading {
    font-family: var(--f-display);
    font-weight: 400;
    font-size: clamp(48px, 7vw, 84px);
    line-height: 1.02;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--c-chrome);
    background: linear-gradient(135deg, #FFFFFF 0%, var(--c-chrome) 35%, var(--c-warm-chrome) 65%, var(--c-chrome) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 18px;
}
.scene-prelude {
    font-family: var(--f-body);
    font-size: 18px;
    line-height: 1.65;
    color: var(--c-soft-silver);
    max-width: 56ch;
    opacity: 0.85;
}

/* ============================================================
   SCENE 1: THE ATRIUM
   ============================================================ */
.atrium {
    position: relative;
    min-height: 100vh;
    background: var(--c-indigo);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 64px 32px;
}

/* full-viewport chevron pattern at low opacity */
.chevron-backdrop {
    position: absolute;
    inset: 0;
    pointer-events: none;
    background:
        repeating-linear-gradient( 45deg, transparent 0 18px, rgba(217, 119, 6, 0.06) 18px 19px, transparent 19px 38px),
        repeating-linear-gradient(-45deg, transparent 0 18px, rgba(217, 119, 6, 0.06) 18px 19px, transparent 19px 38px);
    z-index: 0;
}

/* radial sunburst aura behind the title */
.sunburst-aura {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 140vmax;
    height: 140vmax;
    transform: translate(-50%, -50%);
    background: repeating-conic-gradient(from 0deg at 50% 50%,
        rgba(6, 182, 212, 0.05) 0deg 1.5deg,
        transparent 1.5deg 4deg);
    pointer-events: none;
    z-index: 0;
    animation: sunburstSpin 240s linear infinite;
}
@keyframes sunburstSpin {
    to { transform: translate(-50%, -50%) rotate(360deg); }
}

.atrium-frame {
    position: relative;
    z-index: 2;
    width: min(1180px, 100%);
    display: grid;
    grid-template-columns: 1fr;
    gap: 28px;
    align-items: center;
    justify-items: center;
}

/* The kicker plane (back) */
.title-plane-back {
    align-self: start;
    margin-bottom: -14px;
    background: linear-gradient(135deg, rgba(124, 58, 237, 0.16), rgba(6, 182, 212, 0.08));
    border: 1px solid rgba(192, 192, 192, 0.32);
    padding: 10px 22px;
    transform: rotate(-1.2deg);
    box-shadow: 0 4px 16px rgba(124, 58, 237, 0.12);
}
.kicker {
    font-family: var(--f-mono);
    font-size: 12px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--c-cyan);
}

/* The two overlapping title planes */
.title-plane {
    position: relative;
}
.title-plane-a {
    transform: rotate(3deg) translateX(-1.5vw);
    z-index: 3;
    margin-bottom: -34px;
}
.title-plane-b {
    transform: rotate(-2deg) translateX(2vw);
    z-index: 4;
}

.site-title-fragment {
    display: inline-block;
    font-family: var(--f-display);
    font-weight: 400;
    font-size: clamp(64px, 13vw, 168px);
    line-height: 1.0;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    padding: 14px 42px;
    background: linear-gradient(135deg,
        rgba(15, 10, 42, 0.85) 0%,
        rgba(26, 22, 51, 0.75) 100%);
    border: 1px solid var(--c-chrome);
    color: var(--c-chrome);
    background-clip: padding-box;
    box-shadow:
        0 0 0 1px rgba(192, 192, 192, 0.15),
        0 12px 40px rgba(124, 58, 237, 0.25),
        inset 0 0 24px rgba(124, 58, 237, 0.08);
    animation: borderPulse 4s ease-in-out infinite;
    mix-blend-mode: screen;
}
.site-title-fragment-accent {
    background: linear-gradient(135deg,
        rgba(217, 119, 6, 0.12) 0%,
        rgba(124, 58, 237, 0.18) 100%);
    color: var(--c-warm-chrome);
    border-color: var(--c-warm-chrome);
}
@keyframes borderPulse {
    0%, 100% {
        border-width: 1px;
        box-shadow:
            0 0 0 1px rgba(192, 192, 192, 0.15),
            0 12px 40px rgba(124, 58, 237, 0.25),
            inset 0 0 24px rgba(124, 58, 237, 0.08);
    }
    50% {
        border-width: 2px;
        box-shadow:
            0 0 0 2px rgba(192, 192, 192, 0.25),
            0 16px 56px rgba(124, 58, 237, 0.42),
            inset 0 0 36px rgba(124, 58, 237, 0.16);
    }
}

.atrium-meta {
    margin-top: 36px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    align-items: flex-start;
    transform: rotate(-0.6deg);
}
.atrium-meta-line {
    font-family: var(--f-mono);
    font-size: 12px;
    letter-spacing: 0.16em;
    color: var(--c-platinum);
    opacity: 0.85;
    display: flex;
    align-items: center;
    gap: 10px;
}
.meta-dot {
    width: 8px;
    height: 8px;
    background: var(--c-violet);
    transform: rotate(45deg);
    display: inline-block;
}
.meta-dot-cyan { background: var(--c-cyan); }
.meta-dot-gold { background: var(--c-gold); }

.scroll-indicator {
    position: absolute;
    bottom: 36px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
    z-index: 3;
}
.scroll-rail {
    width: 1px;
    height: 56px;
    background: linear-gradient(180deg, transparent 0%, var(--c-chrome) 50%, var(--c-warm-chrome) 100%);
    position: relative;
    overflow: hidden;
}
.scroll-rail::after {
    content: "";
    position: absolute;
    top: -16px;
    left: -2px;
    width: 5px;
    height: 16px;
    background: var(--c-warm-chrome);
    animation: scrollDrop 2.6s ease-in-out infinite;
}
@keyframes scrollDrop {
    0% { top: -16px; opacity: 0; }
    20% { opacity: 1; }
    100% { top: 60px; opacity: 0; }
}
.scroll-label {
    font-family: var(--f-mono);
    font-size: 10px;
    letter-spacing: 0.32em;
    color: var(--c-chrome);
    text-transform: uppercase;
    opacity: 0.7;
}
.scroll-indicator {
    transition: opacity 500ms ease;
}
body.has-scrolled .scroll-indicator {
    opacity: 0;
    pointer-events: none;
}

/* touch-active state mirrors :hover for portraits and repo-cards */
.repo-card.is-touch {
    transform: scale(1.04) rotate(0deg);
    box-shadow: 0 12px 36px rgba(124, 58, 237, 0.3);
    border-color: var(--c-warm-chrome);
    z-index: 20;
}
.portrait.is-touch {
    transform: scale(1.06) rotate(0deg);
    box-shadow: 0 16px 48px rgba(124, 58, 237, 0.4);
    z-index: 20;
}

/* corner ornaments -- stepped pyramid "ziggurat" markers */
.corner-ornament {
    position: absolute;
    width: 64px;
    height: 64px;
    z-index: 1;
    pointer-events: none;
    background:
        linear-gradient(135deg, transparent 50%, rgba(192, 192, 192, 0.32) 50%, rgba(192, 192, 192, 0.32) 53%, transparent 53%),
        linear-gradient(135deg, transparent 60%, rgba(217, 119, 6, 0.28) 60%, rgba(217, 119, 6, 0.28) 62%, transparent 62%),
        linear-gradient(135deg, transparent 70%, rgba(6, 182, 212, 0.28) 70%, rgba(6, 182, 212, 0.28) 72%, transparent 72%);
}
.corner-tl { top: 24px; left: 24px; }
.corner-tr { top: 24px; right: 24px; transform: scaleX(-1); }
.corner-bl { bottom: 24px; left: 24px; transform: scaleY(-1); }
.corner-br { bottom: 24px; right: 24px; transform: scale(-1, -1); }

/* ============================================================
   SCENE 2: THE REPOSITORY HALL  (broken 12-column grid)
   ============================================================ */
.repository-hall {
    position: relative;
    min-height: 100vh;
    background:
        linear-gradient(180deg, var(--c-indigo) 0%, #100B30 50%, var(--c-indigo) 100%);
    padding: 120px 6vw 160px;
    overflow: hidden;
}
.repository-hall::before {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    background:
        repeating-linear-gradient(45deg, transparent 0 22px, rgba(192, 192, 192, 0.04) 22px 23px, transparent 23px 44px);
}

.hall-intro {
    position: relative;
    z-index: 2;
    margin-bottom: 80px;
    transform: rotate(-0.8deg);
    max-width: 820px;
    margin-left: 4vw;
}

.hall-grid {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    grid-auto-rows: minmax(220px, auto);
    gap: 0;
    column-gap: 0;
    row-gap: 18px;
}

/* The repo cards -- broken-grid placement, every card overlaps neighbours by 1 column. */
.repo-card {
    position: relative;
    background: var(--c-obsidian);
    border: 1px solid var(--c-chrome);
    padding: 28px 30px 24px;
    color: var(--c-soft-silver);
    transition:
        transform 350ms var(--ease-overshoot),
        box-shadow 350ms var(--ease-overshoot),
        border-color 350ms var(--ease-overshoot);
    box-shadow: 0 4px 12px rgba(124, 58, 237, 0.15);
    overflow: hidden;
    cursor: default;
    will-change: transform;
}

.repo-card-a { grid-column: 1 / span 5;  grid-row: 1; z-index: 4; transform: rotate(-1.6deg); }
.repo-card-b { grid-column: 5 / span 5;  grid-row: 1; z-index: 5; transform: rotate(2.2deg); margin-top: 32px; }
.repo-card-c { grid-column: 9 / span 4;  grid-row: 1 / span 2; z-index: 3; transform: rotate(-2.7deg); margin-top: 64px; }

.repo-card-d { grid-column: 1 / span 4;  grid-row: 2; z-index: 6; transform: rotate(1.4deg); margin-top: 38px; }
.repo-card-e { grid-column: 4 / span 5;  grid-row: 2; z-index: 7; transform: rotate(-1.1deg); margin-top: 70px; }

.repo-card-f { grid-column: 1 / span 5;  grid-row: 3; z-index: 5; transform: rotate(2.6deg); margin-top: 28px; }
.repo-card-g { grid-column: 5 / span 4;  grid-row: 3; z-index: 6; transform: rotate(-2.0deg); margin-top: 60px; }
.repo-card-h { grid-column: 8 / span 5;  grid-row: 3; z-index: 5; transform: rotate(1.8deg); margin-top: 22px; }

.repo-card:hover {
    transform: scale(1.04) rotate(0deg);
    box-shadow: 0 12px 36px rgba(124, 58, 237, 0.3);
    border-color: var(--c-warm-chrome);
    z-index: 20;
}

/* card-collage backgrounds (layered triadic gradients) */
.card-collage {
    position: absolute;
    inset: 0;
    pointer-events: none;
    opacity: 0.42;
    mix-blend-mode: screen;
}
.card-collage-violet {
    background:
        radial-gradient(circle at 80% 20%, rgba(124, 58, 237, 0.55), transparent 55%),
        repeating-conic-gradient(from 30deg at 80% 20%, rgba(192, 192, 192, 0.06) 0deg 4deg, transparent 4deg 12deg);
}
.card-collage-cyan {
    background:
        radial-gradient(circle at 15% 85%, rgba(6, 182, 212, 0.55), transparent 60%),
        repeating-linear-gradient(45deg, rgba(192, 192, 192, 0.05) 0 8px, transparent 8px 16px);
}
.card-collage-gold {
    background:
        radial-gradient(circle at 75% 70%, rgba(217, 119, 6, 0.5), transparent 60%),
        repeating-linear-gradient(-45deg, rgba(212, 175, 55, 0.06) 0 10px, transparent 10px 20px);
}
.card-collage-violet-cyan {
    background:
        linear-gradient(135deg, rgba(124, 58, 237, 0.4) 0%, transparent 50%, rgba(6, 182, 212, 0.35) 100%),
        repeating-conic-gradient(from 0deg at 100% 0%, rgba(192, 192, 192, 0.05) 0deg 6deg, transparent 6deg 14deg);
}
.card-collage-cyan-gold {
    background:
        linear-gradient(135deg, rgba(6, 182, 212, 0.4) 0%, transparent 50%, rgba(217, 119, 6, 0.4) 100%),
        repeating-linear-gradient(90deg, rgba(192, 192, 192, 0.05) 0 6px, transparent 6px 14px);
}
.card-collage-violet-gold {
    background:
        linear-gradient(135deg, rgba(124, 58, 237, 0.4) 0%, transparent 50%, rgba(217, 119, 6, 0.4) 100%),
        repeating-conic-gradient(from 60deg at 0% 100%, rgba(212, 175, 55, 0.06) 0deg 5deg, transparent 5deg 12deg);
}

/* card stepped-pyramid corner ornament */
.card-corner-pyramid {
    position: absolute;
    top: 0;
    right: 0;
    width: 56px;
    height: 56px;
    pointer-events: none;
    z-index: 2;
    background:
        linear-gradient(225deg, rgba(192, 192, 192, 0.55) 0%, rgba(192, 192, 192, 0.55) 18%, transparent 18%),
        linear-gradient(225deg, transparent 22%, rgba(217, 119, 6, 0.7) 22%, rgba(217, 119, 6, 0.7) 30%, transparent 30%),
        linear-gradient(225deg, transparent 34%, rgba(6, 182, 212, 0.7) 34%, rgba(6, 182, 212, 0.7) 42%, transparent 42%);
}

.card-meta {
    position: relative;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: var(--f-mono);
    font-size: 11px;
    letter-spacing: 0.14em;
    color: var(--c-cyan);
    text-transform: uppercase;
    margin-bottom: 14px;
    z-index: 2;
}
.card-tag { color: var(--c-cyan); }
.card-stars {
    color: var(--c-warm-chrome);
    background: rgba(217, 119, 6, 0.1);
    padding: 3px 10px;
    border: 1px solid rgba(217, 119, 6, 0.45);
}

.card-title {
    position: relative;
    font-family: var(--f-display);
    font-weight: 400;
    font-size: 44px;
    line-height: 1;
    letter-spacing: 0.06em;
    text-transform: lowercase;
    color: var(--c-chrome);
    margin-bottom: 14px;
    z-index: 2;
    background: linear-gradient(135deg, #FFFFFF 0%, var(--c-chrome) 50%, var(--c-warm-chrome) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.card-blurb {
    position: relative;
    font-family: var(--f-body);
    font-size: 15px;
    line-height: 1.6;
    color: var(--c-platinum);
    opacity: 0.88;
    margin-bottom: 22px;
    z-index: 2;
}

.card-footer {
    position: relative;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 14px;
    border-top: 1px solid rgba(192, 192, 192, 0.22);
    z-index: 2;
}
.card-code {
    font-family: var(--f-mono);
    font-size: 13px;
    color: var(--c-cyan);
    letter-spacing: 0.05em;
}
.card-license {
    font-family: var(--f-deco);
    font-weight: 600;
    font-size: 12px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--c-warm-chrome);
}

/* ============================================================
   SCENE 3: THE CONTRIBUTORS GALLERY
   ============================================================ */
.contributors-gallery {
    position: relative;
    min-height: 100vh;
    padding: 120px 0 160px;
    background: linear-gradient(180deg, var(--c-indigo) 0%, var(--c-deep-indigo) 100%);
    overflow: hidden;
}
.contributors-gallery::before {
    content: "";
    position: absolute;
    inset: 0;
    background: repeating-conic-gradient(from 0deg at 50% 30%, rgba(6, 182, 212, 0.05) 0deg 1.4deg, transparent 1.4deg 3.6deg);
    pointer-events: none;
}

.gallery-intro {
    position: relative;
    z-index: 2;
    padding: 0 6vw;
    margin-bottom: 70px;
    transform: rotate(0.6deg);
}

.portrait-band {
    position: relative;
    z-index: 2;
    display: flex;
    flex-wrap: nowrap;
    overflow: hidden;
    gap: 18px;
    padding: 30px 4vw 60px;
    align-items: flex-end;
}

.portrait {
    flex: 0 0 auto;
    width: 220px;
    aspect-ratio: 3 / 4;
    position: relative;
    transition:
        transform 350ms var(--ease-overshoot),
        box-shadow 350ms var(--ease-overshoot),
        z-index 0s linear 0s;
    will-change: transform;
    box-shadow: 0 4px 12px rgba(124, 58, 237, 0.15);
}
.portrait-1 { transform: rotate(-4deg) translateY(0); }
.portrait-2 { transform: rotate(3deg) translateY(20px); }
.portrait-3 { transform: rotate(-2deg) translateY(-8px); }
.portrait-4 { transform: rotate(4.5deg) translateY(28px); }
.portrait-5 { transform: rotate(-3.2deg) translateY(-4px); }
.portrait-6 { transform: rotate(2.1deg) translateY(14px); }

.portrait:hover {
    transform: scale(1.06) rotate(0deg);
    box-shadow: 0 16px 48px rgba(124, 58, 237, 0.4);
    z-index: 20;
}

.portrait-collage {
    position: absolute;
    inset: 0;
    background-color: var(--c-obsidian);
}
.portrait-collage-1 {
    background-image:
        linear-gradient(135deg, rgba(124, 58, 237, 0.65) 0%, transparent 60%),
        radial-gradient(circle at 70% 25%, rgba(217, 119, 6, 0.55), transparent 55%),
        repeating-linear-gradient(45deg, rgba(192, 192, 192, 0.07) 0 4px, transparent 4px 10px);
}
.portrait-collage-2 {
    background-image:
        linear-gradient(135deg, rgba(6, 182, 212, 0.6) 0%, transparent 55%),
        radial-gradient(circle at 30% 70%, rgba(124, 58, 237, 0.55), transparent 55%),
        repeating-linear-gradient(-45deg, rgba(212, 175, 55, 0.08) 0 5px, transparent 5px 12px);
}
.portrait-collage-3 {
    background-image:
        linear-gradient(135deg, rgba(217, 119, 6, 0.55) 0%, transparent 60%),
        radial-gradient(circle at 60% 60%, rgba(6, 182, 212, 0.5), transparent 55%),
        repeating-conic-gradient(from 30deg at 50% 50%, rgba(192, 192, 192, 0.07) 0deg 6deg, transparent 6deg 14deg);
}
.portrait-collage-4 {
    background-image:
        linear-gradient(135deg, rgba(124, 58, 237, 0.55) 0%, transparent 55%),
        radial-gradient(circle at 80% 80%, rgba(6, 182, 212, 0.6), transparent 55%),
        repeating-linear-gradient(0deg, rgba(217, 119, 6, 0.06) 0 6px, transparent 6px 14px);
}
.portrait-collage-5 {
    background-image:
        linear-gradient(135deg, rgba(6, 182, 212, 0.55) 0%, transparent 50%),
        radial-gradient(circle at 25% 30%, rgba(217, 119, 6, 0.6), transparent 55%),
        repeating-linear-gradient(90deg, rgba(192, 192, 192, 0.06) 0 5px, transparent 5px 12px);
}
.portrait-collage-6 {
    background-image:
        linear-gradient(135deg, rgba(217, 119, 6, 0.6) 0%, transparent 55%),
        radial-gradient(circle at 70% 30%, rgba(124, 58, 237, 0.55), transparent 55%),
        repeating-conic-gradient(from 0deg at 50% 100%, rgba(6, 182, 212, 0.07) 0deg 5deg, transparent 5deg 12deg);
}

.portrait-frame {
    position: absolute;
    inset: 0;
    border: 1px solid var(--c-chrome);
    pointer-events: none;
    z-index: 3;
}
.portrait-frame::before {
    content: "";
    position: absolute;
    top: 6px; right: 6px; bottom: 6px; left: 6px;
    border: 1px solid rgba(212, 175, 55, 0.4);
}

.portrait figcaption {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    padding: 12px 14px 14px;
    background: linear-gradient(180deg, transparent 0%, rgba(15, 10, 42, 0.92) 70%);
    display: flex;
    flex-direction: column;
    gap: 4px;
    z-index: 4;
}
.portrait-name {
    font-family: var(--f-deco);
    font-weight: 600;
    font-size: 16px;
    letter-spacing: 0.06em;
    color: var(--c-chrome);
    text-transform: uppercase;
}
.portrait-role {
    font-family: var(--f-mono);
    font-size: 11px;
    letter-spacing: 0.14em;
    color: var(--c-cyan);
    text-transform: uppercase;
}

/* manifesto block */
.manifesto {
    position: relative;
    z-index: 2;
    margin: 90px auto 0;
    max-width: calc(100vw - 4rem);
    padding: 56px 8vw;
    background: linear-gradient(180deg, rgba(26, 22, 51, 0.55) 0%, rgba(15, 10, 42, 0.7) 100%);
    border: 1px solid rgba(192, 192, 192, 0.35);
    transform: rotate(1.5deg);
    box-shadow: 0 12px 48px rgba(124, 58, 237, 0.18);
}
.manifesto::before, .manifesto::after {
    content: "";
    position: absolute;
    height: 2px;
    left: 6vw;
    right: 6vw;
    background: repeating-linear-gradient(
        90deg,
        var(--c-warm-chrome) 0 8px,
        transparent 8px 14px);
    opacity: 0.7;
}
.manifesto::before { top: 18px; }
.manifesto::after  { bottom: 18px; }

.manifesto-pull {
    font-family: var(--f-display);
    font-weight: 400;
    font-size: clamp(28px, 4vw, 44px);
    line-height: 1.18;
    letter-spacing: 0.05em;
    text-transform: none;
    color: var(--c-warm-chrome);
    margin-bottom: 30px;
    max-width: 22ch;
}
.manifesto-body {
    font-family: var(--f-body);
    font-size: 18px;
    line-height: 1.8;
    color: var(--c-soft-silver);
    max-width: 64ch;
}
.manifesto-body em {
    color: var(--c-cyan);
    font-style: normal;
    font-weight: 500;
}
.manifesto-signature {
    margin-top: 28px;
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: var(--f-mono);
    font-size: 12px;
    letter-spacing: 0.14em;
    color: var(--c-platinum);
    opacity: 0.7;
    text-transform: uppercase;
}
.manifesto-mark {
    color: var(--c-warm-chrome);
    font-size: 16px;
}

/* ============================================================
   SCENE 4: THE TIMELINE FRACTURE
   ============================================================ */
.timeline-fracture {
    position: relative;
    min-height: 150vh;
    padding: 140px 0 160px;
    background:
        linear-gradient(180deg, var(--c-deep-indigo) 0%, var(--c-indigo) 100%);
    overflow: hidden;
}
.timeline-fracture::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        repeating-linear-gradient(45deg, transparent 0 20px, rgba(217, 119, 6, 0.04) 20px 21px, transparent 21px 42px);
    pointer-events: none;
}

.timeline-intro {
    position: relative;
    z-index: 3;
    padding: 0 6vw;
    margin-bottom: 80px;
    transform: rotate(-0.4deg);
}

.timeline-stage {
    position: relative;
    z-index: 2;
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    height: 1800px;
}

.timeline-svg {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
}
.timeline-path {
    stroke-dasharray: 6 8;
    filter: drop-shadow(0 0 6px rgba(217, 119, 6, 0.45));
}
.diamond-node {
    fill: var(--c-warm-chrome);
    stroke: var(--c-chrome);
    stroke-width: 1;
    transition: transform 350ms var(--ease-overshoot);
    transform-box: fill-box;
    transform-origin: center;
}

.milestone {
    position: absolute;
    width: 320px;
    background: var(--c-obsidian);
    border: 1px solid var(--c-chrome);
    padding: 22px 24px;
    z-index: 3;
    transition:
        transform 350ms var(--ease-overshoot),
        box-shadow 350ms var(--ease-overshoot),
        border-color 350ms var(--ease-overshoot);
    will-change: transform;
    box-shadow: 0 4px 12px rgba(124, 58, 237, 0.18);
    cursor: default;
}
.milestone::before {
    content: "";
    position: absolute;
    top: 8px;
    left: 8px;
    right: 8px;
    bottom: 8px;
    border: 1px solid rgba(217, 119, 6, 0.28);
    pointer-events: none;
}
.milestone:hover {
    transform: scale(1.04) rotate(0deg);
    box-shadow: 0 16px 48px rgba(124, 58, 237, 0.4);
    border-color: var(--c-warm-chrome);
    z-index: 20;
}

/* Position each milestone next to the corresponding zigzag waypoint */
.milestone-1  { left: 50%; top: 0;     transform: translateX(-50%) rotate(0.8deg); width: 360px; }
.milestone-2  { left: 4vw;  top: 175px; transform: rotate(-1.4deg); }
.milestone-3  { right: 4vw; top: 335px; transform: rotate(1.6deg); }
.milestone-4  { left: 4vw;  top: 495px; transform: rotate(-1.0deg); width: 340px; }
.milestone-5  { right: 4vw; top: 655px; transform: rotate(2.0deg); width: 300px; }
.milestone-6  { left: 4vw;  top: 815px; transform: rotate(-1.8deg); width: 360px; }
.milestone-7  { right: 4vw; top: 975px; transform: rotate(1.2deg); }
.milestone-8  { left: 4vw;  top: 1135px; transform: rotate(-1.6deg); width: 340px; }
.milestone-9  { right: 4vw; top: 1295px; transform: rotate(1.4deg); width: 320px; }
.milestone-10 { left: 4vw;  top: 1455px; transform: rotate(-1.0deg); }
.milestone-11 { left: 50%; top: 1620px; transform: translateX(-50%) rotate(-0.6deg); width: 380px; }

.milestone-year {
    display: inline-block;
    font-family: var(--f-mono);
    font-size: 12px;
    letter-spacing: 0.22em;
    color: var(--c-warm-chrome);
    text-transform: uppercase;
    padding: 3px 10px;
    border: 1px solid var(--c-warm-chrome);
    margin-bottom: 12px;
}
.milestone-title {
    font-family: var(--f-display);
    font-weight: 400;
    font-size: 26px;
    letter-spacing: 0.05em;
    line-height: 1.1;
    color: var(--c-chrome);
    margin-bottom: 10px;
    text-transform: uppercase;
}
.milestone-body {
    font-family: var(--f-body);
    font-size: 14px;
    line-height: 1.65;
    color: var(--c-platinum);
    opacity: 0.88;
}

/* ============================================================
   SCENE 5: THE ARCHIVE FLOOR
   ============================================================ */
.archive-floor {
    position: relative;
    min-height: 100vh;
    padding: 140px 6vw 120px;
    background:
        linear-gradient(180deg, var(--c-indigo) 0%, var(--c-platinum) 35%, var(--c-platinum) 65%, var(--c-indigo) 100%);
    overflow: hidden;
}
.archive-floor::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        repeating-linear-gradient(45deg, transparent 0 18px, rgba(15, 10, 42, 0.05) 18px 19px, transparent 19px 38px),
        repeating-linear-gradient(-45deg, transparent 0 18px, rgba(15, 10, 42, 0.05) 18px 19px, transparent 19px 38px);
    pointer-events: none;
}

.settling-stage {
    position: relative;
    z-index: 2;
    max-width: 1100px;
    margin: 0 auto;
    text-align: center;
}

.settling-statement {
    font-family: var(--f-display);
    font-weight: 400;
    font-size: clamp(48px, 8vw, 110px);
    line-height: 1.05;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--c-deep-indigo);
    margin-bottom: 60px;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.05em;
}
.settling-statement .letter {
    display: inline-block;
    transition: transform 380ms var(--ease-overshoot);
    will-change: transform;
}
.settling-statement .letter.letter-space {
    width: 0.34em;
}

.chevron-divider {
    height: 14px;
    margin: 0 auto 50px;
    width: min(640px, 80%);
    background:
        repeating-linear-gradient( 45deg, transparent 0 6px, var(--c-gold) 6px 7px, transparent 7px 14px),
        repeating-linear-gradient(-45deg, transparent 0 6px, var(--c-gold) 6px 7px, transparent 7px 14px);
    opacity: 0.85;
}

.archive-coda {
    font-family: var(--f-body);
    font-size: 16px;
    line-height: 1.85;
    color: var(--c-deep-indigo);
    max-width: 64ch;
    margin: 0 auto 56px;
}
.archive-coda em {
    color: var(--c-violet);
    font-style: normal;
    font-weight: 500;
}

.archive-signoff {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 18px;
}
.signoff-cluster {
    display: flex;
    gap: 14px;
    align-items: center;
}
.signoff-mark {
    color: var(--c-gold);
    font-size: 14px;
}
.signoff-mark-cyan { color: var(--c-cyan); }
.signoff-mark-violet { color: var(--c-violet); }
.signoff-line {
    font-family: var(--f-mono);
    font-size: 11px;
    letter-spacing: 0.32em;
    color: var(--c-deep-indigo);
    text-transform: uppercase;
    opacity: 0.7;
}

/* ============================================================
   REVEAL ANIMATIONS  (IntersectionObserver -> .is-visible)
   ============================================================ */
.reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 850ms var(--ease-smooth), transform 850ms var(--ease-smooth);
}
.reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
}
/* preserve rotational offsets on cards once revealed */
.repo-card.reveal { opacity: 0; transform: translateY(20px); }
.repo-card.reveal.is-visible { opacity: 1; transform: translateY(0); }
.portrait.reveal { opacity: 0; transform: translateY(28px); }
.portrait.reveal.is-visible { opacity: 1; }
.portrait-1.reveal.is-visible { transform: rotate(-4deg) translateY(0); }
.portrait-2.reveal.is-visible { transform: rotate(3deg) translateY(20px); }
.portrait-3.reveal.is-visible { transform: rotate(-2deg) translateY(-8px); }
.portrait-4.reveal.is-visible { transform: rotate(4.5deg) translateY(28px); }
.portrait-5.reveal.is-visible { transform: rotate(-3.2deg) translateY(-4px); }
.portrait-6.reveal.is-visible { transform: rotate(2.1deg) translateY(14px); }

.milestone.reveal { opacity: 0; }
.milestone.reveal.is-visible { opacity: 1; }
.milestone-1.reveal.is-visible  { transform: translateX(-50%) rotate(0.8deg); }
.milestone-2.reveal.is-visible  { transform: rotate(-1.4deg); }
.milestone-3.reveal.is-visible  { transform: rotate(1.6deg); }
.milestone-4.reveal.is-visible  { transform: rotate(-1.0deg); }
.milestone-5.reveal.is-visible  { transform: rotate(2.0deg); }
.milestone-6.reveal.is-visible  { transform: rotate(-1.8deg); }
.milestone-7.reveal.is-visible  { transform: rotate(1.2deg); }
.milestone-8.reveal.is-visible  { transform: rotate(-1.6deg); }
.milestone-9.reveal.is-visible  { transform: rotate(1.4deg); }
.milestone-10.reveal.is-visible { transform: rotate(-1.0deg); }
.milestone-11.reveal.is-visible { transform: translateX(-50%) rotate(-0.6deg); }

/* ============================================================
   RESPONSIVE TWEAKS
   ============================================================ */
@media (max-width: 900px) {
    .hall-grid { gap: 24px; row-gap: 32px; }
    .repo-card-a, .repo-card-b, .repo-card-c, .repo-card-d,
    .repo-card-e, .repo-card-f, .repo-card-g, .repo-card-h {
        grid-column: 1 / -1;
        grid-row: auto;
        margin-top: 0;
    }
    .timeline-stage { height: auto; padding: 0 5vw; }
    .timeline-svg { display: none; }
    .milestone {
        position: relative;
        left: auto !important;
        right: auto !important;
        top: auto !important;
        width: 100% !important;
        margin: 0 0 28px;
        transform: rotate(0deg) !important;
    }
    .milestone-1, .milestone-11 { transform: rotate(0deg) !important; }
    .portrait { width: 180px; }
}
@media (max-width: 600px) {
    .site-title-fragment { padding: 10px 22px; }
    .atrium-meta { font-size: 11px; }
    .scene-heading { font-size: 44px; }
    .repo-card { padding: 22px 20px; }
    .card-title { font-size: 36px; }
    .manifesto { padding: 40px 24px; transform: rotate(0.6deg); }
    .portrait { width: 150px; }
    .portrait figcaption { padding: 8px 10px 10px; }
    .portrait-name { font-size: 13px; }
    .portrait-role { font-size: 9px; }
}