/* ═══════════════════════════════════════════════════════════════════════
   L'Arte di Rallentare — Landing Page Premium
   Font: Lora (serif, corpo/titoli) · Inter (sans, UI/dati)
   Palette: Carta naturale · Ardesia notte · Oro antico · Bianco carta
   ═══════════════════════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Lora:ital,wght@0,400;0,600;0,700;1,400;1,600&family=Inter:wght@300;400;500;600;700&display=swap');

/* ── DESIGN TOKENS ──────────────────────────────────────────────────── */
:root {
    /* Palette cromatica editoriale */
    --bg-paper:       #F7F3EC;   /* carta naturale — sfondo corpo */
    --bg-cream:       #F0EBE1;   /* variante più calda per sezioni alternate */
    --bg-night:       #16202E;   /* ardesia notte — footer / hero sezioni scure */
    --bg-night-light: #1E2D40;   /* ardesia chiaro — hover, card scure */

    --text-ink:       #1A2130;   /* inchiostro profondo — testo primario */
    --text-muted:     #5A6478;   /* testo secondario — descrizioni */
    --text-light:     #C8D4E2;   /* testo su scuro */
    --text-ghost:     #8896A8;   /* caption, label su scuro */

    --gold:           #9A7448;   /* oro antico — accento editoriale */
    --gold-light:     #C4A06E;   /* oro chiaro — hover */
    --border:         #DDD6CA;   /* filetti editoriali */
    --border-dark:    #2A3A50;   /* filetti su scuro */

    /* Tipografia */
    --font-serif: 'Lora', 'Palatino Linotype', 'Palatino', Georgia, serif;
    --font-sans:  'Inter', system-ui, -apple-system, sans-serif;

    /* Spaziatura */
    --section-pad: clamp(72px, 10vw, 120px);
    --container:   1040px;
    --gutter:      clamp(20px, 4vw, 48px);

    /* Transizioni */
    --ease: cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
    background-color: var(--bg-paper);
    color: var(--text-ink);
    font-family: var(--font-serif);
    font-size: clamp(15px, 1.8vw, 17.5px);
    line-height: 1.72;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

img { display: block; max-width: 100%; }
a { color: inherit; }

/* ── HEADER ─────────────────────────────────────────────────────────── */
.site-header {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 200;
    padding: 18px 0;
    background-color: rgba(247, 243, 236, 0.88);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    transition: box-shadow 0.3s var(--ease);
}

.site-header:hover {
    box-shadow: 0 2px 20px rgba(0,0,0,0.06);
}

.header-container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 var(--gutter);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-family: var(--font-serif);
    font-style: italic;
    font-weight: 600;
    font-size: 12.5px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--text-ink);
    text-decoration: none;
}

.header-nav {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-link {
    font-family: var(--font-sans);
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.2s;
}

.nav-link:hover { color: var(--text-ink); }

.nav-cta {
    font-family: var(--font-sans);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.10em;
    text-transform: uppercase;
    color: #fff;
    background-color: var(--text-ink);
    padding: 9px 22px;
    text-decoration: none;
    transition: background-color 0.2s var(--ease), transform 0.2s;
}

.nav-cta:hover {
    background-color: var(--gold);
    transform: translateY(-1px);
}

/* ── SEZIONE LABEL ──────────────────────────────────────────────────── */
.section-label {
    font-family: var(--font-sans);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--gold);
    margin-bottom: 14px;
}

.section-label--light { color: var(--gold-light); }

.section-title {
    font-family: var(--font-serif);
    font-size: clamp(24px, 3.5vw, 38px);
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-ink);
    margin-bottom: clamp(32px, 5vw, 60px);
    letter-spacing: -0.01em;
}

/* ── HERO ───────────────────────────────────────────────────────────── */
.hero-section {
    padding: calc(var(--section-pad) + 72px) 0 var(--section-pad);
    background-color: var(--bg-paper);
    border-bottom: 1px solid var(--border);
    position: relative;
    overflow: hidden;
}

.hero-container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 var(--gutter);
    display: grid;
    grid-template-columns: 1fr 1.35fr;
    gap: clamp(48px, 8vw, 96px);
    align-items: center;
}

/* Mockup copertina con ombra prospettica */
.book-wrapper {
    position: relative;
    display: flex;
    justify-content: center;
}

.book-3d {
    position: relative;
    width: clamp(180px, 22vw, 270px);
    aspect-ratio: 1 / 1.414; /* A5 */
    border-radius: 2px 6px 6px 2px;
    overflow: hidden;
    box-shadow:
        -4px 0 0 rgba(0,0,0,0.18),
        0 20px 60px rgba(0,0,0,0.22),
        0 8px 20px rgba(0,0,0,0.14);
    transform: perspective(1000px) rotateY(-4deg);
    transition: transform 0.5s var(--ease), box-shadow 0.5s var(--ease);
}

.book-3d:hover {
    transform: perspective(1000px) rotateY(0deg);
    box-shadow:
        0 0 0 rgba(0,0,0,0),
        0 24px 70px rgba(0,0,0,0.24),
        0 10px 25px rgba(0,0,0,0.16);
}

.book-3d img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.book-shadow {
    position: absolute;
    bottom: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 80%;
    height: 24px;
    background: radial-gradient(ellipse, rgba(0,0,0,0.25) 0%, transparent 70%);
    filter: blur(6px);
    pointer-events: none;
}

/* Testo hero */
.hero-eyebrow {
    font-family: var(--font-sans);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--gold);
    margin-bottom: 16px;
}

.book-title {
    font-family: var(--font-serif);
    font-size: clamp(34px, 5vw, 56px);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.02em;
    color: var(--text-ink);
    margin-bottom: 6px;
}

.book-subtitle {
    font-family: var(--font-serif);
    font-size: clamp(20px, 2.8vw, 30px);
    font-weight: 400;
    font-style: italic;
    line-height: 1.25;
    color: var(--text-muted);
    margin-bottom: 28px;
}

.book-tagline {
    font-size: clamp(14px, 1.6vw, 16.5px);
    line-height: 1.72;
    color: var(--text-muted);
    margin-bottom: 36px;
    max-width: 46ch;
}

/* Stats */
.hero-stats {
    display: flex;
    align-items: center;
    gap: 28px;
    margin-bottom: 40px;
    padding: 20px 0;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.stat-num {
    font-family: var(--font-serif);
    font-size: 26px;
    font-weight: 700;
    color: var(--text-ink);
    line-height: 1;
}

.stat-label {
    font-family: var(--font-sans);
    font-size: 10px;
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-muted);
}

.stat-divider {
    width: 1px;
    height: 36px;
    background-color: var(--border);
}

/* CTA buttons */
.cta-group {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 16px;
}

.cta-primary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background-color: var(--text-ink);
    color: #fff;
    font-family: var(--font-sans);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: 16px 32px;
    text-decoration: none;
    transition: background-color 0.25s var(--ease), transform 0.2s;
}

.cta-primary:hover {
    background-color: var(--gold);
    transform: translateY(-2px);
}

.cta-icon { font-style: normal; font-size: 14px; }

.cta-secondary {
    display: inline-block;
    color: var(--text-ink);
    font-family: var(--font-sans);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    text-decoration: none;
    padding: 16px 24px;
    border: 1px solid var(--border);
    transition: border-color 0.2s, background-color 0.2s;
}

.cta-secondary:hover {
    border-color: var(--text-ink);
    background-color: rgba(0,0,0,0.03);
}

.hero-note {
    font-family: var(--font-sans);
    font-size: 11px;
    color: var(--text-ghost);
    letter-spacing: 0.04em;
}

/* Ornamento tipografico */
.hero-ornament {
    text-align: center;
    font-size: 28px;
    color: var(--border);
    margin-top: clamp(48px, 6vw, 80px);
    letter-spacing: 0.5em;
    user-select: none;
}

/* ── INCIPIT / CITAZIONE ────────────────────────────────────────────── */
.incipit-section {
    background-color: var(--bg-night);
    padding: clamp(48px, 7vw, 80px) 0;
}

.incipit-container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 var(--gutter);
    text-align: center;
}

.incipit-quote {
    font-family: var(--font-serif);
    font-style: italic;
    font-size: clamp(18px, 2.5vw, 26px);
    line-height: 1.5;
    color: var(--text-light);
    max-width: 680px;
    margin: 0 auto;
}

.incipit-quote p { margin-bottom: 16px; }

.incipit-quote cite {
    font-family: var(--font-sans);
    font-style: normal;
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--gold-light);
}

/* ── SINOSSI ────────────────────────────────────────────────────────── */
.synopsis-section {
    padding: var(--section-pad) 0;
    background-color: var(--bg-cream);
    border-bottom: 1px solid var(--border);
}

.synopsis-container {
    max-width: 720px;
    margin: 0 auto;
    padding: 0 var(--gutter);
}

.synopsis-letter p {
    margin-bottom: 24px;
    text-align: justify;
    color: var(--text-ink);
}

.synopsis-letter p:last-child { margin-bottom: 0; }

.synopsis-para-highlight {
    font-family: var(--font-serif);
    font-size: clamp(16px, 2vw, 20px);
    font-style: italic;
    font-weight: 600;
    line-height: 1.6;
    color: var(--text-ink);
    padding-left: 24px;
    border-left: 2px solid var(--gold);
    margin: 36px 0 !important;
    text-align: left !important;
}

/* ── MACRO-TEMI ─────────────────────────────────────────────────────── */
.themes-section {
    padding: var(--section-pad) 0;
    background-color: var(--bg-paper);
    border-bottom: 1px solid var(--border);
}

.themes-container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 var(--gutter);
}

.themes-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: clamp(28px, 4vw, 56px);
}

.theme-card {
    border-top: 1px solid var(--border);
    padding-top: 28px;
}

.theme-number {
    font-family: var(--font-serif);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.2em;
    color: var(--gold);
    margin-bottom: 14px;
}

.theme-title {
    font-family: var(--font-serif);
    font-size: clamp(16px, 1.8vw, 20px);
    font-weight: 700;
    color: var(--text-ink);
    margin-bottom: 14px;
    line-height: 1.25;
}

.theme-desc {
    font-family: var(--font-serif);
    font-size: clamp(13px, 1.3vw, 15px);
    line-height: 1.7;
    color: var(--text-muted);
}

/* ── PROTOCOLLI ─────────────────────────────────────────────────────── */
.protocols-section {
    padding: var(--section-pad) 0;
    background-color: var(--bg-night);
}

.protocols-container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 var(--gutter);
}

.protocols-container .section-title { color: #fff; }

.protocols-intro {
    max-width: 600px;
    font-size: clamp(14px, 1.5vw, 16.5px);
    line-height: 1.72;
    color: var(--text-ghost);
    margin-bottom: 48px;
    margin-top: -32px;
}

.protocols-list {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0;
    counter-reset: protocol;
}

.protocol-item {
    counter-increment: protocol;
    display: flex;
    align-items: baseline;
    gap: 18px;
    padding: 20px 0;
    border-bottom: 1px solid var(--border-dark);
    font-family: var(--font-serif);
    font-size: clamp(14px, 1.4vw, 16px);
    color: var(--text-light);
    transition: color 0.2s;
}

.protocol-item:nth-child(odd) { padding-right: clamp(20px, 4vw, 56px); }
.protocol-item:nth-child(even) {
    padding-left: clamp(20px, 4vw, 56px);
    border-left: 1px solid var(--border-dark);
}

.protocol-item:hover { color: #fff; }

.protocol-item::before {
    content: counter(protocol, decimal-leading-zero);
    font-family: var(--font-sans);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.08em;
    color: var(--gold-light);
    flex-shrink: 0;
    min-width: 24px;
}

/* ── SEZIONE ACQUISTO ───────────────────────────────────────────────── */
.purchase-section {
    padding: var(--section-pad) 0;
    background-color: var(--bg-cream);
    border-bottom: 1px solid var(--border);
    text-align: center;
}

.purchase-container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 var(--gutter);
}

.format-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
    max-width: 720px;
    margin: 0 auto;
}

.format-card {
    position: relative;
    border: 1px solid var(--border);
    padding: 40px 36px;
    text-align: left;
    background-color: var(--bg-paper);
    transition: box-shadow 0.3s var(--ease), transform 0.3s var(--ease);
}

.format-card:hover {
    box-shadow: 0 12px 40px rgba(0,0,0,0.1);
    transform: translateY(-4px);
}

.format-card--featured {
    border-color: var(--text-ink);
    background-color: #fff;
}

.format-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--text-ink);
    color: #fff;
    font-family: var(--font-sans);
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    padding: 5px 16px;
    white-space: nowrap;
}

.format-icon {
    font-size: 32px;
    margin-bottom: 16px;
}

.format-name {
    font-family: var(--font-serif);
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 8px;
}

.format-price {
    font-family: var(--font-sans);
    font-size: 26px;
    font-weight: 700;
    color: var(--gold);
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.format-desc {
    font-family: var(--font-serif);
    font-size: 14px;
    line-height: 1.65;
    color: var(--text-muted);
    margin-bottom: 28px;
}

.format-cta {
    display: block;
    text-align: center;
    border: 1px solid var(--border);
    color: var(--text-ink);
    font-family: var(--font-sans);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    text-decoration: none;
    padding: 14px 24px;
    transition: background-color 0.2s, border-color 0.2s, color 0.2s;
}

.format-cta:hover {
    background-color: var(--bg-cream);
    border-color: var(--text-muted);
}

.format-cta--primary {
    background-color: var(--text-ink);
    color: #fff;
    border-color: var(--text-ink);
}

.format-cta--primary:hover {
    background-color: var(--gold);
    border-color: var(--gold);
    color: #fff;
}

/* ── FOOTER / AUTORE ────────────────────────────────────────────────── */
.site-footer {
    background-color: var(--bg-night);
    padding: var(--section-pad) 0 48px;
}

.footer-container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 var(--gutter);
}

.author-section {
    margin-bottom: clamp(48px, 6vw, 80px);
    max-width: 720px;
}

.author-title {
    font-family: var(--font-serif);
    font-size: clamp(28px, 3.5vw, 40px);
    font-weight: 700;
    color: #fff;
    margin-bottom: 24px;
    line-height: 1.2;
}

.author-text {
    font-family: var(--font-serif);
    font-size: clamp(14px, 1.5vw, 16px);
    line-height: 1.78;
    color: var(--text-ghost);
}

.author-socials {
    display: flex;
    gap: 24px;
    margin-top: 28px;
}

.social-link {
    font-family: var(--font-sans);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-ghost);
    text-decoration: none;
    border-bottom: 1px solid var(--border-dark);
    padding-bottom: 2px;
    transition: color 0.2s, border-color 0.2s;
}

.social-link:hover {
    color: var(--gold-light);
    border-color: var(--gold-light);
}

.footer-bottom {
    border-top: 1px solid var(--border-dark);
    padding-top: 32px;
    text-align: center;
    font-family: var(--font-sans);
    font-size: 11px;
    letter-spacing: 0.04em;
    color: var(--text-ghost);
}

.footer-brand {
    font-style: italic;
    font-family: var(--font-serif);
    color: var(--gold-light);
}

/* ── RESPONSIVE ─────────────────────────────────────────────────────── */
@media (max-width: 860px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-image-side { order: -1; }
    .book-tagline { max-width: 100%; text-align: center; }
    .hero-stats { justify-content: center; }
    .cta-group { justify-content: center; }
    .hero-note { text-align: center; }

    .themes-grid { grid-template-columns: 1fr; gap: 32px; }
    .protocols-list { grid-template-columns: 1fr; }
    .protocol-item:nth-child(even) {
        padding-left: 0;
        border-left: none;
    }
    .format-grid { grid-template-columns: 1fr; max-width: 420px; }

    .header-nav { display: none; }
}

@media (max-width: 520px) {
    .hero-stats { flex-wrap: wrap; gap: 20px; }
    .stat-divider { display: none; }
    .cta-group { flex-direction: column; width: 100%; }
    .cta-primary, .cta-secondary { text-align: center; justify-content: center; }
}