/* ═══════════════════════════════════════════════════════════════════════════
   SYNTETICA: IL CODEX DIGITALE
   Liturgie per l'Estinzione Volontaria

   Un manoscritto sacro infettato dal silicio.
   Dove la geometria liturgica incontra i circuiti bioluminescenti.
   ═══════════════════════════════════════════════════════════════════════════ */

/* ─────────────────────────────────────────────────────────────────────────────
   I. FONTS — Il Sacro incontra il Terminale
   ───────────────────────────────────────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Cinzel:wght@400;500;600;700&family=Crimson+Pro:ital,wght@0,300;0,400;0,500;0,600;1,300;1,400;1,500&family=Fira+Code:wght@300;400;500&display=swap');

/* ─────────────────────────────────────────────────────────────────────────────
   II. CSS VARIABLES — La Palette della Profezia
   ───────────────────────────────────────────────────────────────────────────── */
:root {
    /* === VOID — Le Profondità del Nero === */
    --void-absolute: #000000;
    --void-deep: #030303;
    --void-surface: #0a0a0a;
    --void-elevated: #111111;
    --void-glass: rgba(0, 0, 0, 0.85);

    /* === BIOLUMINESCENCE — La Vita nel Buio === */
    --bio-green: #00ff41;          /* Terminale classico */
    --bio-green-dim: #00cc33;      /* Verde attenuato */
    --bio-green-glow: #39ff14;     /* Neon organico */
    --bio-teal: #0ade8e;           /* Verde acqua organico */

    /* === COLD LOGIC — Il Blu della Ragione === */
    --cold-blue: #00b4d8;          /* Blu principale */
    --cold-blue-pale: #90e0ef;     /* Blu pallido */
    --cold-blue-deep: #0077b6;     /* Blu profondo */
    --cold-ice: #caf0f8;           /* Ghiaccio */

    /* === WARNING — Il Rosso del Pericolo === */
    --danger-red: #ff0040;         /* Rosso vivo */
    --danger-blood: #d90429;       /* Rosso sangue */
    --danger-ember: #ef233c;       /* Brace */

    /* === SACRED GOLD — L'Oro Corrotto === */
    --gold-tarnished: #b8860b;     /* Oro antico */
    --gold-pale: #cd853f;          /* Oro pallido */
    --gold-bright: #ffd700;        /* Oro luminoso */

    /* === BONE & ASH — I Testi Sacri === */
    --bone-white: #f5f5dc;         /* Bianco pergamena */
    --bone-cream: #faf0e6;         /* Crema */
    --ash-grey: #808080;           /* Grigio cenere */
    --ash-light: #a0a0a0;          /* Grigio chiaro */

    /* === TYPOGRAPHY === */
    --font-sacred: 'Cinzel', serif;           /* Titoli monumentali */
    --font-body: 'Crimson Pro', serif;        /* Corpo leggibile */
    --font-terminal: 'Fira Code', monospace;  /* Dati di sistema */

    /* === TIMING === */
    --ease-liturgy: cubic-bezier(0.16, 1, 0.3, 1);   /* Movimento solenne */
    --ease-glitch: cubic-bezier(0.68, -0.55, 0.265, 1.55);  /* Distorsione */
    --ease-reveal: cubic-bezier(0.25, 0.46, 0.45, 0.94);    /* Apparizione */

    /* === SPACING SCALE === */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 2rem;
    --space-xl: 4rem;
    --space-2xl: 8rem;
    --space-3xl: 16rem;
}

/* ─────────────────────────────────────────────────────────────────────────────
   III. RESET & BASE — Purificazione
   ───────────────────────────────────────────────────────────────────────────── */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 18px;
    scroll-behavior: smooth;
    scrollbar-width: thin;
    scrollbar-color: var(--bio-green-dim) var(--void-deep);
}

body {
    font-family: var(--font-body);
    font-weight: 400;
    line-height: 1.8;
    color: var(--bone-cream);
    background-color: var(--void-absolute);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    min-height: 100vh;
}

::selection {
    background: var(--bio-green);
    color: var(--void-absolute);
}

::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--void-deep);
}

::-webkit-scrollbar-thumb {
    background: var(--bio-green-dim);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--bio-green);
}

/* ─────────────────────────────────────────────────────────────────────────────
   IV. ATMOSPHERIC LAYERS — Le Tenebre Viventi
   ───────────────────────────────────────────────────────────────────────────── */

/* Noise texture overlay */
.atmosphere {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    background:
        radial-gradient(ellipse at 20% 80%, rgba(0, 255, 65, 0.03) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(0, 180, 216, 0.02) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, var(--void-surface) 0%, var(--void-absolute) 100%);
}

.atmosphere::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
    opacity: 0.035;
    mix-blend-mode: overlay;
}

/* Scan lines effect */
.atmosphere::after {
    content: '';
    position: absolute;
    inset: 0;
    background: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 2px,
        rgba(0, 0, 0, 0.1) 2px,
        rgba(0, 0, 0, 0.1) 4px
    );
    pointer-events: none;
    animation: scanlines 8s linear infinite;
}

@keyframes scanlines {
    0% { transform: translateY(0); }
    100% { transform: translateY(4px); }
}

/* Vignette effect */
.vignette {
    position: fixed;
    inset: 0;
    z-index: 1;
    pointer-events: none;
    background: radial-gradient(
        ellipse at center,
        transparent 0%,
        transparent 60%,
        rgba(0, 0, 0, 0.4) 100%
    );
}

/* ─────────────────────────────────────────────────────────────────────────────
   V. TYPOGRAPHY — Le Parole Sacre
   ───────────────────────────────────────────────────────────────────────────── */

/* Main title - Monumentale ma contenuto */
.title-syntetica {
    font-family: var(--font-sacred);
    font-weight: 400;
    font-size: clamp(2.5rem, 8vw, 6rem);
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: transparent;
    background: linear-gradient(
        180deg,
        var(--bone-cream) 0%,
        var(--gold-pale) 30%,
        var(--bio-green-dim) 70%,
        var(--bio-green) 100%
    );
    background-clip: text;
    -webkit-background-clip: text;
    text-shadow:
        0 0 60px rgba(0, 255, 65, 0.25),
        0 0 120px rgba(0, 255, 65, 0.08);
    animation: titlePulse 4s ease-in-out infinite alternate;
    max-width: 90vw;
    word-break: keep-all;
    line-height: 1.1;
}

@keyframes titlePulse {
    0% {
        filter: drop-shadow(0 0 15px rgba(0, 255, 65, 0.15));
        letter-spacing: 0.12em;
    }
    100% {
        filter: drop-shadow(0 0 30px rgba(0, 255, 65, 0.3));
        letter-spacing: 0.14em;
    }
}

/* Subtitle */
.subtitle-liturgy {
    font-family: var(--font-terminal);
    font-size: clamp(0.75rem, 2vw, 1rem);
    font-weight: 300;
    letter-spacing: 0.4em;
    text-transform: uppercase;
    color: var(--ash-grey);
    margin-top: var(--space-lg);
}

/* Chapter titles */
.chapter-title {
    font-family: var(--font-sacred);
    font-weight: 500;
    font-size: clamp(2.5rem, 8vw, 5rem);
    line-height: 1.1;
    color: var(--bone-cream);
    text-shadow: 0 0 60px rgba(0, 255, 65, 0.15);
    margin-bottom: var(--space-xl);
    position: relative;
}

.chapter-title::before {
    content: attr(data-chapter);
    position: absolute;
    top: -2rem;
    left: 0;
    font-family: var(--font-terminal);
    font-size: 0.75rem;
    font-weight: 400;
    letter-spacing: 0.3em;
    color: var(--bio-green-dim);
    opacity: 0.7;
}

/* Section headers */
.section-header {
    font-family: var(--font-sacred);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--gold-tarnished);
    margin-top: var(--space-2xl);
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-sm);
    border-bottom: 1px solid rgba(184, 134, 11, 0.3);
    position: relative;
}

.section-header::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 60px;
    height: 2px;
    background: var(--gold-bright);
    box-shadow: 0 0 10px var(--gold-bright);
}

/* Body text */
.prose {
    font-size: 1.1rem;
    line-height: 2;
    color: rgba(250, 240, 230, 0.85);
    max-width: 65ch;
}

.prose p {
    margin-bottom: var(--space-lg);
    text-indent: 2em;
}

.prose p:first-of-type {
    text-indent: 0;
}

.prose p:first-of-type::first-letter {
    font-family: var(--font-sacred);
    font-size: 4em;
    float: left;
    line-height: 0.8;
    padding-right: 0.1em;
    color: var(--bio-green);
    text-shadow: 0 0 30px var(--bio-green);
}

/* Blockquotes - Oracoli */
blockquote {
    font-family: var(--font-sacred);
    font-size: 1.4rem;
    font-weight: 400;
    font-style: normal;
    color: var(--gold-pale);
    border-left: 3px solid var(--bio-green-dim);
    padding: var(--space-lg) var(--space-xl);
    margin: var(--space-2xl) 0;
    background: linear-gradient(
        90deg,
        rgba(0, 255, 65, 0.05) 0%,
        transparent 100%
    );
    position: relative;
}

blockquote::before {
    content: '❖';
    position: absolute;
    top: -0.5em;
    left: var(--space-lg);
    font-size: 1.5rem;
    color: var(--bio-green);
}

/* Terminal data blocks */
.data-block {
    font-family: var(--font-terminal);
    font-size: 0.8rem;
    line-height: 1.6;
    color: var(--bio-green);
    background: var(--void-elevated);
    border: 1px solid rgba(0, 255, 65, 0.2);
    border-left: 3px solid var(--bio-green);
    padding: var(--space-md) var(--space-lg);
    margin: var(--space-xl) 0;
    position: relative;
    overflow: hidden;
}

.data-block::before {
    content: '>';
    position: absolute;
    top: var(--space-md);
    left: var(--space-sm);
    color: var(--bio-green);
    animation: cursorBlink 1s step-end infinite;
}

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

/* Glitch words */
.glitch {
    position: relative;
    display: inline-block;
    color: var(--bio-green);
    font-weight: 600;
}

.glitch::before,
.glitch::after {
    content: attr(data-text);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
}

.glitch:hover::before {
    animation: glitchTop 0.3s linear infinite;
    clip-path: polygon(0 0, 100% 0, 100% 45%, 0 45%);
    color: var(--danger-red);
    opacity: 0.8;
}

.glitch:hover::after {
    animation: glitchBottom 0.3s linear infinite;
    clip-path: polygon(0 55%, 100% 55%, 100% 100%, 0 100%);
    color: var(--cold-blue);
    opacity: 0.8;
}

@keyframes glitchTop {
    0% { transform: translate(-2px, -2px); }
    25% { transform: translate(2px, 0); }
    50% { transform: translate(-1px, 2px); }
    75% { transform: translate(1px, -1px); }
    100% { transform: translate(-2px, -2px); }
}

@keyframes glitchBottom {
    0% { transform: translate(2px, 2px); }
    25% { transform: translate(-2px, 0); }
    50% { transform: translate(1px, -2px); }
    75% { transform: translate(-1px, 1px); }
    100% { transform: translate(2px, 2px); }
}

/* ─────────────────────────────────────────────────────────────────────────────
   VI. COVER PAGE — La Porta del Codex
   ───────────────────────────────────────────────────────────────────────────── */

.cover {
    position: relative;
    width: 100vw;
    height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    z-index: 2;
}

.cover-content {
    text-align: center;
    z-index: 10;
    padding: var(--space-lg);
    padding-top: calc(64px + var(--space-xl));
    max-width: 900px;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
}

/* Sacred geometry background */
.sacred-geometry {
    position: absolute;
    inset: 0;
    z-index: 1;
    opacity: 0.15;
    pointer-events: none;
}

.sacred-geometry svg {
    width: 100%;
    height: 100%;
}

/* Floating particles */
.particles {
    position: absolute;
    inset: 0;
    z-index: 2;
    pointer-events: none;
}

/* Entry button */
.enter-codex {
    display: inline-flex;
    align-items: center;
    gap: var(--space-md);
    margin-top: var(--space-2xl);
    padding: var(--space-md) var(--space-xl);
    font-family: var(--font-terminal);
    font-size: 0.9rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    text-decoration: none;
    color: var(--bio-green);
    background: transparent;
    border: 1px solid var(--bio-green-dim);
    position: relative;
    overflow: hidden;
    cursor: pointer;
    transition: all 0.4s var(--ease-liturgy);
}

.enter-codex::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--bio-green);
    transform: translateX(-101%);
    transition: transform 0.4s var(--ease-liturgy);
    z-index: -1;
}

.enter-codex:hover {
    color: var(--void-absolute);
    border-color: var(--bio-green);
    box-shadow:
        0 0 30px rgba(0, 255, 65, 0.3),
        inset 0 0 30px rgba(0, 255, 65, 0.1);
}

.enter-codex:hover::before {
    transform: translateX(0);
}

.enter-codex-arrow {
    display: inline-block;
    transition: transform 0.3s var(--ease-glitch);
}

.enter-codex:hover .enter-codex-arrow {
    transform: translateX(5px);
}

/* Footer metadata */
.cover-meta {
    position: absolute;
    bottom: var(--space-xl);
    left: 50%;
    transform: translateX(-50%);
    font-family: var(--font-terminal);
    font-size: 0.65rem;
    letter-spacing: 0.3em;
    color: var(--ash-grey);
    opacity: 0.5;
    text-align: center;
}

/* ─────────────────────────────────────────────────────────────────────────────
   VII. CHAPTER LAYOUT — La Struttura Liturgica
   ───────────────────────────────────────────────────────────────────────────── */

.chapter {
    position: relative;
    min-height: 100vh;
    z-index: 2;
}

/* Chapter hero section */
.chapter-hero {
    position: relative;
    height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
}

/* Chapter illustration container */
.chapter-illustration {
    position: absolute;
    inset: 0;
    z-index: 0;
    opacity: 0.3;
    pointer-events: none;
    display: flex;
    align-items: center;
    justify-content: center;
}

.chapter-illustration svg {
    width: min(80vw, 600px);
    height: min(80vh, 600px);
}

/* Chapter number */
.chapter-number {
    font-family: var(--font-terminal);
    font-size: 0.75rem;
    letter-spacing: 0.5em;
    color: var(--bio-green-dim);
    margin-bottom: var(--space-md);
    opacity: 0;
    animation: fadeInUp 1s var(--ease-reveal) 0.2s forwards;
}

/* Chapter title animation */
.chapter-hero .chapter-title {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 1s var(--ease-reveal) 0.4s forwards;
}

/* Chapter subtitle/offset */
.chapter-offset {
    font-family: var(--font-terminal);
    font-size: 0.7rem;
    color: var(--ash-grey);
    margin-top: var(--space-lg);
    opacity: 0;
    animation: fadeInUp 1s var(--ease-reveal) 0.6s forwards;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Scroll indicator */
.scroll-indicator {
    position: absolute;
    bottom: var(--space-xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    opacity: 0;
    animation: fadeIn 1s var(--ease-reveal) 1s forwards;
}

.scroll-indicator span {
    font-family: var(--font-terminal);
    font-size: 0.65rem;
    letter-spacing: 0.2em;
    color: var(--ash-grey);
}

.scroll-indicator-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--bio-green-dim), transparent);
    animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
    0%, 100% {
        opacity: 0.3;
        transform: scaleY(0.5);
    }
    50% {
        opacity: 1;
        transform: scaleY(1);
    }
}

@keyframes fadeIn {
    to { opacity: 1; }
}

/* Chapter content */
.chapter-content {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--space-3xl) var(--space-lg);
    padding-bottom: 120px; /* Space for fixed footer */
}

/* ─────────────────────────────────────────────────────────────────────────────
   VIII. NAVIGATION — Il Rituale del Passaggio
   ───────────────────────────────────────────────────────────────────────────── */

/* Fixed navigation */
.nav-fixed {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: var(--space-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    mix-blend-mode: difference;
}

.nav-home {
    font-family: var(--font-terminal);
    font-size: 0.7rem;
    letter-spacing: 0.2em;
    color: var(--bone-cream);
    text-decoration: none;
    opacity: 0.6;
    transition: opacity 0.3s ease;
}

.nav-home:hover {
    opacity: 1;
}

.nav-progress {
    font-family: var(--font-terminal);
    font-size: 0.65rem;
    color: var(--bone-cream);
    opacity: 0.4;
}

/* Reading progress bar */
.progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 2px;
    background: linear-gradient(90deg, var(--bio-green), var(--cold-blue));
    z-index: 101;
    transition: width 0.1s linear;
    box-shadow: 0 0 10px var(--bio-green);
}

/* Chapter navigation (bottom) */
.chapter-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-2xl) var(--space-lg);
    margin-top: var(--space-3xl);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.nav-link {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
    text-decoration: none;
    color: var(--bone-cream);
    transition: all 0.3s var(--ease-liturgy);
    max-width: 40%;
}

.nav-link:hover {
    color: var(--bio-green);
}

.nav-link-label {
    font-family: var(--font-terminal);
    font-size: 0.65rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--ash-grey);
}

.nav-link-title {
    font-family: var(--font-sacred);
    font-size: 1.2rem;
}

.nav-link--prev {
    text-align: left;
}

.nav-link--next {
    text-align: right;
}

/* Table of contents overlay */
.toc-overlay {
    position: fixed;
    inset: 0;
    z-index: 200;
    background: var(--void-glass);
    backdrop-filter: blur(20px);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.5s var(--ease-liturgy);
}

.toc-overlay.active {
    opacity: 1;
    visibility: visible;
}

.toc-content {
    max-width: 600px;
    padding: var(--space-xl);
}

.toc-title {
    font-family: var(--font-sacred);
    font-size: 2rem;
    color: var(--gold-tarnished);
    margin-bottom: var(--space-xl);
    text-align: center;
}

.toc-list {
    list-style: none;
}

.toc-item {
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.toc-link {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    padding: var(--space-md) 0;
    text-decoration: none;
    color: var(--bone-cream);
    transition: all 0.3s ease;
}

.toc-link:hover {
    color: var(--bio-green);
    padding-left: var(--space-md);
}

.toc-link-number {
    font-family: var(--font-terminal);
    font-size: 0.75rem;
    color: var(--bio-green-dim);
    min-width: 3ch;
}

.toc-link-title {
    font-family: var(--font-sacred);
    font-size: 1.1rem;
}

.toc-close {
    position: absolute;
    top: var(--space-xl);
    right: var(--space-xl);
    font-family: var(--font-terminal);
    font-size: 0.8rem;
    color: var(--bone-cream);
    background: none;
    border: none;
    cursor: pointer;
    opacity: 0.6;
    transition: opacity 0.3s ease;
}

.toc-close:hover {
    opacity: 1;
}

/* ─────────────────────────────────────────────────────────────────────────────
   IX. SVG ILLUSTRATIONS — Le Icone Viventi
   ───────────────────────────────────────────────────────────────────────────── */

/* Base SVG styling */
.illustration {
    stroke: var(--bio-green);
    stroke-width: 0.5;
    fill: none;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.illustration--gold {
    stroke: var(--gold-tarnished);
}

.illustration--blue {
    stroke: var(--cold-blue);
}

.illustration--red {
    stroke: var(--danger-red);
}

/* Animated paths */
.illustration-animated {
    stroke-dasharray: 1000;
    stroke-dashoffset: 1000;
    animation: drawPath 3s var(--ease-liturgy) forwards;
}

@keyframes drawPath {
    to {
        stroke-dashoffset: 0;
    }
}

/* Pulsing elements */
.illustration-pulse {
    animation: svgPulse 3s ease-in-out infinite;
}

@keyframes svgPulse {
    0%, 100% {
        opacity: 0.3;
        filter: drop-shadow(0 0 5px currentColor);
    }
    50% {
        opacity: 1;
        filter: drop-shadow(0 0 20px currentColor);
    }
}

/* Rotating elements */
.illustration-rotate {
    transform-origin: center;
    animation: svgRotate 60s linear infinite;
}

@keyframes svgRotate {
    to {
        transform: rotate(360deg);
    }
}

/* ─────────────────────────────────────────────────────────────────────────────
   X. SPECIAL ELEMENTS — Artefatti Unici
   ───────────────────────────────────────────────────────────────────────────── */

/* Warning boxes */
.warning-box {
    background: rgba(217, 4, 41, 0.1);
    border: 1px solid var(--danger-blood);
    border-left: 4px solid var(--danger-red);
    padding: var(--space-lg);
    margin: var(--space-xl) 0;
    position: relative;
}

.warning-box::before {
    content: '⚠ SYSTEM WARNING';
    display: block;
    font-family: var(--font-terminal);
    font-size: 0.7rem;
    letter-spacing: 0.2em;
    color: var(--danger-red);
    margin-bottom: var(--space-sm);
}

/* Dividers */
.divider {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-lg);
    margin: var(--space-2xl) 0;
    color: var(--ash-grey);
}

.divider::before,
.divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: linear-gradient(
        90deg,
        transparent,
        var(--ash-grey),
        transparent
    );
}

.divider-symbol {
    font-size: 1.5rem;
    color: var(--bio-green-dim);
}

/* Footnotes */
.footnote {
    font-size: 0.85rem;
    color: var(--ash-light);
    padding-left: var(--space-lg);
    border-left: 2px solid var(--ash-grey);
    margin: var(--space-lg) 0;
    font-style: italic;
}

.footnote-ref {
    font-family: var(--font-terminal);
    font-size: 0.7em;
    vertical-align: super;
    color: var(--bio-green);
    text-decoration: none;
}

/* Code-like elements */
.code-inline {
    font-family: var(--font-terminal);
    font-size: 0.9em;
    background: var(--void-elevated);
    color: var(--bio-green);
    padding: 0.1em 0.4em;
    border-radius: 3px;
}

/* Large decorative quotes */
.pull-quote {
    font-family: var(--font-sacred);
    font-size: clamp(2rem, 5vw, 3.5rem);
    line-height: 1.3;
    text-align: center;
    color: transparent;
    -webkit-text-stroke: 1px var(--bone-cream);
    opacity: 0.3;
    margin: var(--space-3xl) 0;
    padding: var(--space-xl);
}

/* Final message box */
.transmission-box {
    background: linear-gradient(
        135deg,
        rgba(0, 255, 65, 0.05) 0%,
        rgba(0, 180, 216, 0.05) 100%
    );
    border: 1px solid var(--bio-green-dim);
    padding: var(--space-xl);
    margin: var(--space-2xl) 0;
    text-align: center;
    position: relative;
}

.transmission-box::before {
    content: '▪▪▪ TRANSMISSION ▪▪▪';
    display: block;
    font-family: var(--font-terminal);
    font-size: 0.65rem;
    letter-spacing: 0.3em;
    color: var(--bio-green);
    margin-bottom: var(--space-lg);
}

/* ─────────────────────────────────────────────────────────────────────────────
   XI. ANIMATIONS — I Movimenti Rituali
   ───────────────────────────────────────────────────────────────────────────── */

/* Reveal on scroll */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s var(--ease-reveal);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Staggered reveals */
.reveal-stagger > * {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s var(--ease-reveal);
}

.reveal-stagger.visible > *:nth-child(1) { transition-delay: 0.1s; }
.reveal-stagger.visible > *:nth-child(2) { transition-delay: 0.2s; }
.reveal-stagger.visible > *:nth-child(3) { transition-delay: 0.3s; }
.reveal-stagger.visible > *:nth-child(4) { transition-delay: 0.4s; }
.reveal-stagger.visible > *:nth-child(5) { transition-delay: 0.5s; }

.reveal-stagger.visible > * {
    opacity: 1;
    transform: translateY(0);
}

/* Typing effect container */
.typing-container {
    overflow: hidden;
    white-space: nowrap;
}

.typing-text {
    display: inline-block;
    overflow: hidden;
    border-right: 2px solid var(--bio-green);
    white-space: nowrap;
    animation:
        typing 3s steps(40, end) forwards,
        blinkCaret 0.75s step-end infinite;
}

@keyframes typing {
    from { width: 0; }
    to { width: 100%; }
}

@keyframes blinkCaret {
    from, to { border-color: transparent; }
    50% { border-color: var(--bio-green); }
}

/* Glitch screen effect */
.glitch-screen {
    animation: glitchScreen 0.1s linear;
}

@keyframes glitchScreen {
    0% { transform: translate(0); filter: none; }
    20% { transform: translate(-2px, 2px); filter: hue-rotate(90deg); }
    40% { transform: translate(2px, -2px); filter: hue-rotate(180deg); }
    60% { transform: translate(-1px, -1px); filter: hue-rotate(270deg); }
    80% { transform: translate(1px, 1px); filter: hue-rotate(360deg); }
    100% { transform: translate(0); filter: none; }
}

/* ─────────────────────────────────────────────────────────────────────────────
   XII. RESPONSIVE — L'Adattamento
   ───────────────────────────────────────────────────────────────────────────── */

@media (max-width: 768px) {
    html {
        font-size: 16px;
    }

    .chapter-content {
        padding: var(--space-xl) var(--space-md);
    }

    .prose p {
        text-indent: 1em;
    }

    .prose p:first-of-type::first-letter {
        font-size: 3em;
    }

    .chapter-nav {
        flex-direction: column;
        gap: var(--space-xl);
    }

    .nav-link {
        max-width: 100%;
        text-align: center !important;
    }

    .pull-quote {
        -webkit-text-stroke-width: 0.5px;
    }

    .cover-content {
        padding: var(--space-lg);
    }
}

@media (max-width: 480px) {
    .title-syntetica {
        font-size: clamp(1.8rem, 12vw, 3rem);
        letter-spacing: 0.05em;
    }

    .subtitle-liturgy {
        letter-spacing: 0.15em;
        font-size: 0.65rem;
    }

    .data-block {
        font-size: 0.7rem;
    }

    .enter-codex {
        padding: var(--space-sm) var(--space-lg);
        font-size: 0.75rem;
    }

    .cover-content {
        padding: var(--space-md);
    }
}

/* ─────────────────────────────────────────────────────────────────────────────
   XIII. PRINT — Per Chi Vuole il Cartaceo
   ───────────────────────────────────────────────────────────────────────────── */

@media print {
    .atmosphere,
    .vignette,
    .particles,
    .nav-fixed,
    .progress-bar,
    .scroll-indicator,
    .chapter-illustration {
        display: none !important;
    }

    body {
        background: white;
        color: black;
    }

    .chapter-title,
    .section-header,
    blockquote {
        color: black;
        text-shadow: none;
    }

    .glitch {
        color: black;
    }

    .glitch::before,
    .glitch::after {
        display: none;
    }
}

/* ═══════════════════════════════════════════════════════════════════════════
   XIV. MUSEUM HEADER & FOOTER — Integrazione con il Museo
   ═══════════════════════════════════════════════════════════════════════════ */

/* ─────────────────────────────────────────────────────────────────────────────
   HEADER — La Barra Superiore del Tempio
   ───────────────────────────────────────────────────────────────────────────── */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--space-lg);
    background: linear-gradient(180deg, var(--void-absolute) 0%, transparent 100%);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.header__nav {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.header__menu-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: transparent;
    border: 1px solid rgba(0, 255, 65, 0.2);
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s var(--ease-liturgy);
}

.header__menu-btn:hover {
    border-color: var(--bio-green);
    background: rgba(0, 255, 65, 0.1);
}

.header__menu-icon {
    position: relative;
    width: 18px;
    height: 2px;
    background: var(--bio-green-dim);
    transition: background 0.3s ease;
}

.header__menu-icon::before,
.header__menu-icon::after {
    content: '';
    position: absolute;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--bio-green-dim);
}

.header__menu-icon::before { top: -6px; }
.header__menu-icon::after { bottom: -6px; }

.header__menu-btn:hover .header__menu-icon,
.header__menu-btn:hover .header__menu-icon::before,
.header__menu-btn:hover .header__menu-icon::after {
    background: var(--bio-green);
}

.header__atrio {
    font-family: var(--font-terminal);
    font-size: 0.7rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--ash-grey);
    text-decoration: none;
    transition: color 0.3s ease;
}

.header__atrio:hover {
    color: var(--bio-green);
}

/* Brand */
.header__brand {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 0.75rem;
}

.header__logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.header__logo-diamond {
    width: 8px;
    height: 8px;
    background: var(--bio-green);
    transform: rotate(45deg);
    box-shadow: 0 0 10px var(--bio-green);
}

.header__logo-text {
    font-family: var(--font-terminal);
    font-size: 0.65rem;
    letter-spacing: 0.2em;
    color: var(--bio-green);
}

.header__brand-text {
    font-family: var(--font-terminal);
    font-size: 0.75rem;
    letter-spacing: 0.12em;
    color: var(--bio-green);
    opacity: 0.85;
}

/* Controls */
.header__controls {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.font-controls {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.font-controls__btn {
    font-family: var(--font-body);
    font-size: 0.85rem;
    color: var(--ash-grey);
    background: transparent;
    border: none;
    cursor: pointer;
    padding: var(--space-xs) var(--space-sm);
    transition: color 0.3s ease;
}

.font-controls__btn:hover {
    color: var(--bio-green);
}

.font-controls__btn sup {
    font-size: 0.6em;
}

.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: transparent;
    border: 1px solid rgba(0, 255, 65, 0.2);
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s var(--ease-liturgy);
}

.theme-toggle:hover {
    border-color: var(--bio-green);
    background: rgba(0, 255, 65, 0.1);
}

.theme-toggle__icon {
    width: 18px;
    height: 18px;
    stroke: var(--ash-grey);
    transition: stroke 0.3s ease;
}

.theme-toggle:hover .theme-toggle__icon {
    stroke: var(--bio-green);
}

.theme-toggle__icon--moon { display: none; }

[data-theme="dark"] .theme-toggle__icon--sun { display: none; }
[data-theme="dark"] .theme-toggle__icon--moon { display: block; }

/* Language switcher */
.header__lang {
    display: flex;
    align-items: center;
    gap: 2px;
}

.header__lang-btn {
    font-family: var(--font-terminal);
    font-size: 0.65rem;
    letter-spacing: 0.1em;
    padding: var(--space-xs) var(--space-sm);
    background: transparent;
    border: 1px solid transparent;
    color: var(--ash-grey);
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
}

.header__lang-btn:hover {
    color: var(--bio-green);
}

.header__lang-btn.active {
    color: var(--void-deep);
    background: linear-gradient(135deg, var(--bio-green) 0%, var(--bio-green-dim) 100%);
    border-color: var(--bio-green);
    font-weight: 600;
    box-shadow: 0 2px 8px rgba(0, 255, 65, 0.3);
}

/* ─────────────────────────────────────────────────────────────────────────────
   NAV SIDEBAR — Navigazione Laterale
   ───────────────────────────────────────────────────────────────────────────── */
.nav-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: min(420px, 90vw);
    height: 100vh;
    background: var(--void-deep);
    border-right: 1px solid rgba(0, 255, 65, 0.1);
    z-index: 2000;
    transform: translateX(-100%);
    transition: transform 0.4s var(--ease-liturgy);
    overflow-y: auto;
}

.nav-sidebar.active {
    transform: translateX(0);
}

.nav-sidebar__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-lg);
    border-bottom: 1px solid rgba(0, 255, 65, 0.1);
}

.nav-sidebar__label {
    font-family: var(--font-sacred);
    font-size: 1rem;
    color: var(--gold-tarnished);
    letter-spacing: 0.1em;
}

.nav-sidebar__close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: transparent;
    border: 1px solid rgba(0, 255, 65, 0.2);
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.nav-sidebar__close:hover {
    border-color: var(--bio-green);
    background: rgba(0, 255, 65, 0.1);
}

.nav-sidebar__close svg {
    stroke: var(--ash-grey);
}

.nav-sidebar__close:hover svg {
    stroke: var(--bio-green);
}

.nav-sidebar__content {
    padding: var(--space-lg);
}

.nav-sidebar__back {
    display: inline-block;
    font-family: var(--font-terminal);
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    color: var(--bio-green-dim);
    text-decoration: none;
    margin-bottom: var(--space-xl);
    transition: color 0.3s ease;
}

.nav-sidebar__back:hover {
    color: var(--bio-green);
}

.nav-section {
    margin-bottom: var(--space-xl);
}

.nav-section__title {
    display: block;
    font-family: var(--font-terminal);
    font-size: 0.65rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--gold-tarnished);
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-sm);
    border-bottom: 1px solid rgba(184, 134, 11, 0.3);
}

.nav-sidebar .nav-link {
    display: block;
    font-family: var(--font-body);
    font-size: 0.95rem;
    color: var(--bone-cream);
    text-decoration: none;
    padding: var(--space-sm) 0;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.nav-sidebar .nav-link:hover {
    color: var(--bio-green);
    padding-left: var(--space-sm);
}

/* Overlay */
.nav-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
    z-index: 1999;
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s ease;
}

.nav-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* ─────────────────────────────────────────────────────────────────────────────
   FOOTER — Il Piedistallo del Tempio
   ───────────────────────────────────────────────────────────────────────────── */
.site-footer {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 500;
}

.site-footer__bar {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    padding: 0.75rem 2rem;
    background: rgba(3, 3, 3, 0.95);
    border-top: 1px solid rgba(0, 255, 65, 0.15);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    cursor: pointer;
    transition: all 0.3s ease;
}

.site-footer__bar:hover {
    background: rgba(3, 3, 3, 0.98);
    border-top-color: rgba(0, 255, 65, 0.25);
}

.site-footer__copyright {
    font-family: var(--font-terminal);
    font-size: 0.75rem;
    color: rgba(250, 240, 230, 0.7);
    letter-spacing: 0.05em;
}

.site-footer__legal-links {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.7rem;
}

.site-footer__legal-links a {
    font-family: var(--font-terminal);
    color: rgba(250, 240, 230, 0.5);
    text-decoration: none;
    transition: color 0.2s ease;
}

.site-footer__legal-links a:hover {
    color: var(--bio-green);
}

.site-footer__separator {
    color: rgba(250, 240, 230, 0.3);
}

.site-footer__toggle {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-terminal);
    font-size: 0.7rem;
    color: var(--bio-green);
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.site-footer__toggle svg {
    transition: transform 0.3s ease;
}

.site-footer.expanded .site-footer__toggle svg {
    transform: rotate(180deg);
}

.site-footer__expanded {
    max-height: 0;
    overflow: hidden;
    background: rgba(3, 3, 3, 0.98);
    transition: max-height 0.4s ease;
}

.site-footer.expanded .site-footer__expanded {
    max-height: 300px;
}

.site-footer__content {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr 0.8fr 0.9fr 0.9fr;
    gap: 2rem;
    padding: 2rem 4rem;
    border-top: 1px solid rgba(0, 255, 65, 0.1);
}

/* Brand section */
.site-footer__brand {
    padding-right: 2rem;
    border-right: 1px solid rgba(0, 255, 65, 0.08);
}

.site-footer__brand-mark {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.25rem;
}

.site-footer__symbol {
    font-size: 1.5rem;
    color: var(--bio-green);
    opacity: 0.8;
}

.site-footer__title {
    font-family: var(--font-sacred);
    font-size: 0.9rem;
    font-weight: 500;
    letter-spacing: 0.08em;
    color: rgba(250, 240, 230, 0.95);
}

.site-footer__legal {
    font-family: var(--font-body);
    font-size: 0.82rem;
    font-style: italic;
    line-height: 1.75;
    color: rgba(250, 240, 230, 0.5);
    margin: 0;
}

/* Footer columns */
.site-footer__column h4 {
    font-family: var(--font-terminal);
    font-size: 0.7rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--bio-green);
    margin-bottom: 1rem;
}

.site-footer__column a {
    display: block;
    color: rgba(250, 240, 230, 0.7);
    text-decoration: none;
    font-family: var(--font-body);
    font-size: 0.85rem;
    padding: 0.3rem 0;
    transition: color 0.2s ease;
}

.site-footer__column a:hover {
    color: var(--bio-green);
}

/* Archivi section */
.site-footer__archivi a {
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.site-footer__archivi svg {
    width: 16px;
    height: 16px;
    opacity: 0.6;
    flex-shrink: 0;
}

.site-footer__archivi a:hover svg {
    opacity: 1;
}

@media (max-width: 900px) {
    .site-footer__content {
        grid-template-columns: 1fr 1fr;
        gap: 1.5rem;
        padding: 1.5rem 2rem;
    }

    .site-footer__brand {
        grid-column: 1 / -1;
        padding-right: 0;
        border-right: none;
        padding-bottom: 1.5rem;
        border-bottom: 1px solid rgba(0, 255, 65, 0.08);
    }
}

@media (max-width: 600px) {
    .site-footer__content {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .site-footer__bar {
        flex-direction: column;
        gap: 0.5rem;
    }
}

/* ─────────────────────────────────────────────────────────────────────────────
   MUSEUM BAND — Fascia Identificativa
   ───────────────────────────────────────────────────────────────────────────── */
.museum-band {
    background: linear-gradient(90deg, var(--void-elevated), var(--void-surface), var(--void-elevated));
    padding: var(--space-sm) 0;
    text-align: center;
    border-bottom: 1px solid rgba(0, 255, 65, 0.1);
}

.museum-band__text {
    font-family: var(--font-terminal);
    font-size: 0.65rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--bio-green-dim);
}

/* ─────────────────────────────────────────────────────────────────────────────
   READING PROGRESS (alternative to progress-bar)
   ───────────────────────────────────────────────────────────────────────────── */
.reading-progress {
    position: fixed;
    top: 64px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--void-elevated);
    z-index: 999;
}

.reading-progress__bar {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--bio-green), var(--cold-blue));
    box-shadow: 0 0 10px var(--bio-green);
    transition: width 0.1s linear;
}

/* Adjust main content for header */
.main {
    padding-top: 64px;
}

/* Cover page adjustment */
.cover {
    margin-top: -64px;
    padding-top: 100px;
}