:root {
    /* DESIGN TOKENS: IBM Plex Mono" (Google Fonts Interaction Motif (4% frequency IntersectionObserver IntersectionObserver on a sentinel element placed at `top: 10vh` IntersectionObserver. Source Serif 4 body text creates a distinctly literary Source Serif 4" (Google Fonts */
    --void-black: #0a0610;
    --obsidian-plum: #1a0a12;
    --muted-burgundy: #8a3050;
    --tribunal-crimson: #c4385a;
    --pale-ash: #d4c8cb;
    --bone-white: #f0e8ea;
    --filament-gold: #b8944a;
    --deep-aubergine: #2d0f1e;
    --display-font: "Cormorant Garamond", serif;
    --body-font: "Source Serif 4", serif;
    --mono-font: "IBM Plex Mono", monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; background: var(--void-black); }
body {
    min-height: 100vh;
    overflow-x: hidden;
    background:
        radial-gradient(circle at 18% 8%, rgba(196, 56, 90, 0.15), transparent 28rem),
        linear-gradient(135deg, var(--void-black) 0%, var(--obsidian-plum) 52%, var(--deep-aubergine) 100%);
    color: var(--pale-ash);
    font-family: var(--body-font);
    font-size: clamp(1rem, 1.15vw, 1.25rem);
    line-height: 1.72;
    letter-spacing: 0.01em;
}
body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 9999;
    background: repeating-linear-gradient(0deg, transparent, transparent 5px, rgba(138, 48, 80, 0.03) 5px, rgba(138, 48, 80, 0.03) 6px);
}

.cover-card {
    width: 100vw;
    height: 100vh;
    position: fixed;
    inset: 0;
    z-index: 1000;
    perspective: 1200px;
    background: var(--void-black);
    transition: opacity 0.45s ease, visibility 0.45s ease;
}
.cover-card.removed { opacity: 0; visibility: hidden; pointer-events: none; }
.cover-card-inner {
    width: 100%;
    height: 100%;
    position: relative;
    transform-style: preserve-3d;
    transition: transform 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}
.cover-card.flipped .cover-card-inner { transform: rotateY(180deg); }
.cover-face {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    backface-visibility: hidden;
    background:
        linear-gradient(90deg, rgba(138, 48, 80, 0.08) 1px, transparent 1px) 0 0 / 8rem 8rem,
        linear-gradient(0deg, rgba(138, 48, 80, 0.08) 1px, transparent 1px) 0 0 / 8rem 8rem,
        var(--void-black);
}
.cover-front h1 {
    font-family: var(--display-font);
    font-size: clamp(3rem, 8vw, 8rem);
    font-variant: small-caps;
    font-weight: 700;
    letter-spacing: 0.12em;
    color: var(--tribunal-crimson);
    text-shadow: 0 0 2rem rgba(196, 56, 90, 0.35);
}
.cover-front p, .back-inscription span {
    margin-top: 1rem;
    font-family: var(--mono-font);
    font-size: clamp(0.68rem, 0.85vw, 0.9rem);
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: rgba(184, 148, 74, 0.75);
}
.cover-filigree {
    position: absolute;
    inset: 3rem;
    border: 1px solid rgba(138, 48, 80, 0.45);
    box-shadow: inset 0 0 0 1rem rgba(26, 10, 18, 0.28), 0 0 4rem rgba(196, 56, 90, 0.08);
}
.cover-back { transform: rotateY(180deg); }
.back-inscription {
    width: min(42rem, 80vw);
    min-height: 20rem;
    display: grid;
    place-items: center;
    padding: 3rem;
    border: 1px solid var(--muted-burgundy);
    background: rgba(26, 10, 18, 0.9);
}
.back-inscription strong {
    font-family: var(--display-font);
    font-size: clamp(2rem, 5vw, 4rem);
    font-variant: small-caps;
    line-height: 1.05;
    letter-spacing: 0.08em;
    color: var(--bone-white);
    text-align: center;
}

.content-grid {
    display: grid;
    grid-template-columns: [pillar] 15% [content] 50% [gutter] 5% [margin] 25% [end] 5%;
    min-height: 100vh;
}
.pillar-nav {
    grid-column: pillar;
    position: fixed;
    inset: 0 auto 0 0;
    width: 15%;
    height: 100vh;
    padding-top: 9vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2.1rem;
    background: rgba(15, 8, 18, 0.85);
    border-right: 1px solid rgba(138, 48, 80, 0.55);
    z-index: 200;
}
.pillar-marker {
    appearance: none;
    border: 0;
    background: transparent;
    font-family: var(--display-font);
    font-size: clamp(1rem, 1.35vw, 1.45rem);
    font-weight: 600;
    letter-spacing: 0.1em;
    color: rgba(138, 48, 80, 0.7);
    cursor: pointer;
    transform-style: preserve-3d;
    transition: color 0.3s ease, text-shadow 0.3s ease;
}
.pillar-marker.active {
    color: var(--tribunal-crimson);
    text-shadow: 0 0 1.2rem rgba(196, 56, 90, 0.55);
    animation: numeralFlip 0.3s ease;
}
@keyframes numeralFlip { 0% { transform: rotateY(0); } 50% { transform: rotateY(80deg); } 100% { transform: rotateY(0); } }

.tribunal-section {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: [pillar] 15% [content] 50% [gutter] 5% [margin] 25% [end] 5%;
    min-height: 100vh;
    position: relative;
    padding: 7rem 0;
    isolation: isolate;
}
.tribunal-section::before {
    content: "";
    position: absolute;
    inset: 2rem 5% 2rem 15%;
    z-index: -1;
    background: linear-gradient(180deg, rgba(26, 10, 18, 0.55), rgba(10, 6, 16, 0.12));
    border-left: 1px solid rgba(138, 48, 80, 0.22);
    border-right: 1px solid rgba(138, 48, 80, 0.16);
}
.section-content { grid-column: content; position: relative; padding: 1rem 4rem 1rem 0; }
.marginalia {
    grid-column: margin;
    align-self: start;
    position: sticky;
    top: 6rem;
    min-height: 34rem;
    padding: 2rem;
    border-left: 1px solid rgba(138, 48, 80, 0.24);
}
.section-kicker, .data-ticker, .margin-note, .card-front span {
    font-family: var(--mono-font);
    font-size: clamp(0.7rem, 0.85vw, 0.9rem);
    font-weight: 300;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: rgba(138, 48, 80, 0.76);
}
.section-kicker { margin-bottom: 1rem; color: rgba(184, 148, 74, 0.8); }
h2 {
    font-family: var(--display-font);
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    font-variant: small-caps;
    font-weight: 700;
    letter-spacing: 0.12em;
    line-height: 0.98;
    color: var(--tribunal-crimson);
    margin-bottom: 2.3rem;
}
p { margin-bottom: 1.5rem; color: var(--pale-ash); }
em { color: var(--bone-white); }
blockquote {
    margin: 2.5rem 0;
    padding: 1.5rem 0 1.5rem 2rem;
    border-left: 2px solid var(--tribunal-crimson);
    font-family: var(--display-font);
    font-style: italic;
    font-weight: 500;
    font-size: clamp(1.3rem, 2.2vw, 2rem);
    line-height: 1.5;
    color: var(--tribunal-crimson);
}
.inset-panel {
    margin: 0 2rem 0 0;
    padding: 3rem;
    background: rgba(240, 232, 234, 0.94);
    color: var(--obsidian-plum);
    box-shadow: 0 2rem 6rem rgba(0, 0, 0, 0.35);
}
.inset-panel h2, .inset-panel h3 { color: var(--obsidian-plum); }
.inset-panel p { color: var(--obsidian-plum); }

.corner {
    position: absolute;
    width: 32px;
    height: 32px;
    border-color: var(--muted-burgundy);
    opacity: 0.5;
    transition: opacity 0.4s ease, border-color 0.4s ease;
}
.top-left { top: 24px; left: calc(15% + 24px); border-top: 1px solid; border-left: 1px solid; }
.top-right { top: 24px; right: calc(5% + 24px); border-top: 1px solid; border-right: 1px solid; }
.bottom-right { bottom: 24px; right: calc(5% + 24px); border-bottom: 1px solid; border-right: 1px solid; }
.bottom-left { bottom: 24px; left: calc(15% + 24px); border-bottom: 1px solid; border-left: 1px solid; }
.tribunal-section.active .corner { opacity: 0.9; border-color: var(--tribunal-crimson); }
.section-divider {
    position: absolute;
    top: 0;
    left: 15%;
    width: 70vw;
    height: 1px;
    background: var(--tribunal-crimson);
    transform: scaleX(0);
    transform-origin: left;
    opacity: 0;
    transition: transform 0.8s ease-out, opacity 0.3s ease;
}
.section-divider::after {
    content: "";
    position: absolute;
    right: -7px;
    top: -3px;
    width: 7px;
    height: 7px;
    background: var(--filament-gold);
    transform: rotate(45deg);
}
.tribunal-section.active .section-divider { transform: scaleX(1); opacity: 1; }

.laurel-wreath { width: min(18rem, 70%); height: auto; margin-bottom: 0.7rem; overflow: visible; }
.laurel-wreath path { fill: none; stroke: var(--filament-gold); stroke-width: 1.3; opacity: 0.76; }

.iso-stage { perspective: 600px; width: 11rem; height: 11rem; display: grid; place-items: center; margin: 2.5rem auto; }
.iso-icon { width: 100%; height: 100%; fill: none; stroke: var(--tribunal-crimson); stroke-width: 1.5px; opacity: 0; transition: opacity 0.5s ease; animation: isoRotate 20s linear infinite; will-change: transform; }
.iso-icon .gold, .card-front .gold { stroke: var(--filament-gold); }
.tribunal-section.active .iso-icon { opacity: 1; }
@keyframes isoRotate { from { transform: rotateY(0deg) rotateX(0deg); } to { transform: rotateY(360deg) rotateX(0deg); } }
.data-ticker { display: inline-block; padding: 0.7rem 0.9rem; border: 1px solid rgba(138, 48, 80, 0.55); }
.margin-note { max-width: 17rem; line-height: 1.7; color: rgba(212, 200, 203, 0.62); }

.card-container { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.25rem; margin-top: 2.5rem; }
.flip-card { height: 18rem; perspective: 800px; cursor: pointer; }
.card-inner { position: relative; width: 100%; height: 100%; transform-style: preserve-3d; transition: transform 0.6s ease; will-change: transform; }
.flip-card:hover .card-inner, .flip-card.flipped .card-inner { transform: rotateY(180deg); }
.card-face { position: absolute; inset: 0; backface-visibility: hidden; border: 1px solid var(--muted-burgundy); padding: 1.3rem; display: flex; flex-direction: column; align-items: center; justify-content: center; background: var(--obsidian-plum); transition: border-color 0.3s ease; }
.flip-card:hover .card-face { border-color: var(--tribunal-crimson); }
.card-front svg { width: 5rem; height: 5rem; fill: none; stroke: var(--tribunal-crimson); stroke-width: 1.5; margin-bottom: 1.2rem; animation: isoRotate 20s linear infinite; }
.card-back { transform: rotateY(180deg); align-items: flex-start; justify-content: flex-start; background: var(--void-black); border-color: var(--tribunal-crimson); }
.card-back h3, .axiom-block h3 { font-family: var(--display-font); font-variant: small-caps; letter-spacing: 0.08em; font-size: clamp(1.4rem, 2vw, 1.8rem); color: var(--tribunal-crimson); margin-bottom: 0.9rem; }
.card-back p { font-size: 1rem; line-height: 1.55; }

.axiom-list { display: grid; gap: 1.6rem; margin-top: 2rem; }
.axiom-block { padding-left: 1.3rem; border-left: 3px solid var(--tribunal-crimson); }
.axiom-block p { margin-bottom: 0; }
.entablature { display: grid; gap: 0.36rem; margin: 2.5rem 0; }
.entablature span, .entablature strong { display: block; background: var(--muted-burgundy); opacity: 0.65; }
.entablature span { height: 1px; } .entablature strong { height: 2px; }
.fluting { display: flex; gap: 8px; height: 8rem; opacity: 0.32; }
.fluting i { display: block; width: 1px; height: 100%; background: var(--muted-burgundy); }

@media (max-width: 1024px) {
    .content-grid, .tribunal-section { grid-template-columns: 1fr; }
    .pillar-nav { width: 100%; height: auto; inset: 0 0 auto 0; padding: 1rem 1.25rem; flex-direction: row; justify-content: center; }
    .tribunal-section { padding: 7rem 1.5rem 4rem; }
    .tribunal-section::before { inset: 5rem 1rem 1rem; }
    .section-content, .marginalia { grid-column: 1; padding: 0; }
    .marginalia { position: relative; top: auto; min-height: 0; margin-top: 2rem; display: grid; justify-items: center; border-left: 0; border-top: 1px solid rgba(138, 48, 80, 0.24); padding-top: 2rem; }
    .top-left, .bottom-left { left: 24px; } .top-right, .bottom-right { right: 24px; }
    .section-divider { left: 0; width: 70%; }
    .card-container { grid-template-columns: 1fr; }
    .inset-panel { margin: 0; }
}
@media (max-width: 768px) {
    .cover-filigree { inset: 1rem; }
    .tribunal-section { padding-inline: 1rem; }
    .inset-panel { padding: 1.5rem; }
    h2 { font-size: clamp(2.1rem, 12vw, 3rem); }
}