:root {
    --primary: #1c1a17; /* Dark Obsidian/Charcoal */
    --primary-light: #2c2925;
    --gold: #c5a059; /* Roman Gold */
    --gold-bright: #e5c079;
    --gold-dark: #8e6c2f;
    --marble: #f4ece1; /* Warm Roman Marble */
    --marble-light: #FAF7F2;
    --text: #2d2a26;
    --text-muted: #6e675f;
    --border: rgba(197, 160, 89, 0.25);
    --border-light: rgba(197, 160, 89, 0.15);
    --shadow: 0 16px 36px rgba(45, 42, 38, 0.08);
    --transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
    --font-heading: 'Cinzel', serif;
    --font-body: 'Montserrat', sans-serif;
}

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

body {
    background-color: var(--marble-light);
    color: var(--text);
    font-family: var(--font-body);
    line-height: 1.8;
    font-weight: 400;
    overflow-x: hidden;
    position: relative;
}

/* Filigrana geometrica neoclassica sullo sfondo */
.neoclassic-watermark {
    position: absolute;
    top: 5%;
    left: 50%;
    transform: translateX(-50%);
    width: 90%;
    max-width: 1400px;
    height: 90%;
    background-image: radial-gradient(circle, var(--border-light) 1px, transparent 1px);
    background-size: 40px 40px;
    opacity: 0.5;
    pointer-events: none;
    z-index: -1;
}

h1, h2, h3, h4 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.3;
    color: var(--primary);
    letter-spacing: 0.05em;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.text-center { text-align: center; }
.light-text { color: var(--marble-light) !important; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center; }

/* Buttons */
.btn {
    display: inline-block;
    padding: 1rem 2.2rem;
    font-family: var(--font-body);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    font-size: 0.75rem;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--primary);
    color: var(--marble-light);
    border: 1px solid var(--primary);
}

.btn-primary:hover {
    background: transparent;
    color: var(--primary);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.15);
}

.btn-gold {
    background: var(--gold);
    color: var(--primary);
    border: 1px solid var(--gold);
    font-weight: 700;
}

.btn-gold:hover {
    background: transparent;
    color: var(--gold-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(197, 160, 89, 0.3);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--gold);
    color: var(--primary);
}

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

.btn-outline-white {
    background: transparent;
    border: 1px solid var(--marble-light);
    color: var(--marble-light);
}

.btn-outline-white:hover {
    background: var(--marble-light);
    color: var(--primary);
    transform: translateY(-2px);
}

/* Hero Section */
.hero {
    min-height: 90vh;
    display: flex;
    align-items: center;
    position: relative;
    background: linear-gradient(135deg, rgba(244, 236, 225, 0.95) 0%, rgba(250, 247, 242, 0.98) 100%);
    border-bottom: 2px solid var(--gold);
    padding: 6rem 0;
}

.badge {
    display: inline-block;
    font-family: var(--font-body);
    font-weight: 700;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 5px;
    color: var(--gold-dark);
    margin-bottom: 1.5rem;
    border-bottom: 2px solid var(--gold);
    padding-bottom: 0.5rem;
}

.hero h1 {
    font-size: 4.5rem;
    font-weight: 900;
    margin-bottom: 1rem;
    color: var(--primary);
    letter-spacing: -1px;
}

.subtitle {
    font-size: 1.6rem;
    font-family: 'Playfair Display', serif;
    font-style: italic;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

.author-name {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    color: var(--primary);
}

.hero-meta {
    display: flex;
    gap: 1.5rem;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.hero-meta strong {
    color: var(--primary);
}

.hero-cta {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.hero-visual {
    display: flex;
    justify-content: center;
}

.book-frame {
    padding: 1.5rem;
    background: #fff;
    box-shadow: 0 30px 70px rgba(0,0,0,0.12);
    border: 1px solid var(--border);
    transition: var(--transition);
    transform: rotateY(-8deg) rotateX(4deg);
}

.book-frame:hover {
    transform: rotateY(0) rotateX(0);
}

.cover-img {
    width: 100%;
    max-width: 320px;
    height: auto;
    display: block;
    border: 1px solid rgba(0,0,0,0.05);
}

/* Compact Author Box */
.compact-author-box {
    padding: 3rem 0;
    background: #fff;
    border-bottom: 1px solid var(--border);
}

.author-summary {
    display: flex;
    align-items: center;
    gap: 2.5rem;
}

.author-thumb {
    width: 90px;
    height: 90px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--marble);
    box-shadow: var(--shadow);
}

.author-info h3 {
    font-size: 1.5rem;
    margin-bottom: 0.25rem;
}

.author-info h3 small {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.author-info p {
    font-size: 0.95rem;
    color: var(--text-muted);
    max-width: 900px;
}

/* Importance Section */
.importance {
    padding: 6rem 0;
}

.section-title {
    font-size: 2.8rem;
    margin-bottom: 2rem;
    position: relative;
    text-transform: uppercase;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 2px;
    background: var(--gold);
    margin-top: 0.8rem;
}

.text-center.section-title::after {
    margin: 0.8rem auto 0;
}

.lead-text {
    font-size: 1.2rem;
    font-family: 'Playfair Display', serif;
    color: var(--primary);
    margin-bottom: 1.5rem;
}

.feature-list {
    list-style: none;
    margin-top: 2rem;
}

.feature-list li {
    margin-bottom: 1.2rem;
    padding-left: 2rem;
    position: relative;
    font-size: 0.95rem;
}

.feature-list li::before {
    content: '✦';
    position: absolute;
    left: 0;
    color: var(--gold);
    font-size: 1rem;
}

.sidebar {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.stat-card {
    padding: 2.5rem;
    background: #fff;
    border: 1px solid var(--border);
    text-align: center;
    position: relative;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 5px;
    left: 5px;
    right: 5px;
    bottom: 5px;
    border: 1px dashed var(--border);
}

.stat-card .number {
    display: block;
    font-family: var(--font-heading);
    font-size: 3.5rem;
    color: var(--gold-dark);
    line-height: 1;
    margin-bottom: 0.5rem;
}

/* Interactive Gallery */
.interactive-gallery {
    background: var(--primary);
    color: var(--marble-light);
    padding: 6rem 0;
    position: relative;
}

.section-intro {
    font-size: 1.1rem;
    max-width: 800px;
    margin: -1rem auto 3rem;
    color: var(--text-muted);
}

.light-text.section-intro {
    color: #b0a599;
}

.masters-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.master-card {
    background: var(--primary-light);
    border: 1px solid rgba(197, 160, 89, 0.2);
    padding: 2rem 1rem;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
}

.master-card:hover {
    transform: translateY(-8px);
    border-color: var(--gold);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.portrait {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--primary);
    margin: 0 auto 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    font-size: 2.2rem;
    color: var(--gold);
    border: 2px solid var(--gold);
    transition: var(--transition);
}

.master-card:hover .portrait {
    background: var(--gold);
    color: var(--primary);
}

.master-card h3 {
    font-size: 1.1rem;
    margin-bottom: 0.4rem;
    color: var(--marble-light);
}

.master-card span {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--gold);
}

/* Detail panel on landing */
.detail-panel {
    margin-top: 4rem;
    background: var(--primary-light);
    padding: 3rem;
    border: 1px solid var(--border);
    transition: var(--transition);
    border-radius: 4px;
}

.detail-panel .placeholder {
    text-align: center;
    color: #8c8276;
    font-style: italic;
}

/* Modal Styling */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(28, 26, 23, 0.85);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.4s, visibility 0.4s;
    backdrop-filter: blur(8px);
}

.modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: var(--marble-light);
    border: 3px solid var(--gold);
    width: 90%;
    max-width: 750px;
    position: relative;
    box-shadow: 0 30px 80px rgba(0,0,0,0.5);
    transform: scale(0.9);
    transition: transform 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
    max-height: 90vh;
    overflow-y: auto;
}

.modal.active .modal-content {
    transform: scale(1);
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1.5rem;
    background: none;
    border: none;
    font-size: 2.2rem;
    color: var(--primary);
    cursor: pointer;
    z-index: 10;
    line-height: 1;
}

.modal-body {
    padding: 3.5rem;
}

.modal-master-title {
    font-size: 2.4rem;
    color: var(--primary);
    margin-bottom: 0.5rem;
    border-bottom: 1px solid var(--border);
    padding-bottom: 0.5rem;
}

.modal-master-era {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: var(--gold-dark);
    font-weight: 700;
    margin-bottom: 2rem;
}

.modal-section {
    margin-bottom: 1.8rem;
}

.modal-section h4 {
    font-size: 1rem;
    text-transform: uppercase;
    color: var(--primary);
    margin-bottom: 0.5rem;
    letter-spacing: 1px;
}

.modal-section p {
    font-size: 0.95rem;
    color: var(--text);
}

.modal-section blockquote {
    font-family: 'Playfair Display', serif;
    font-style: italic;
    color: var(--text-muted);
    border-left: 3px solid var(--gold);
    padding-left: 1.2rem;
    margin: 1rem 0;
}

.modal-action-btn {
    margin-top: 1.5rem;
}

/* Simulator styling */
.simulator-section {
    padding: 6rem 0;
    background: #fff;
    border-bottom: 1px solid var(--border);
}

.simulator-layout {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 4rem;
    align-items: center;
    margin-top: 3rem;
}

.simulator-controls {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.control-description {
    font-size: 0.95rem;
    color: var(--text-muted);
}

.polygon-selector {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.poly-btn {
    background: var(--marble-light);
    border: 1px solid var(--border);
    padding: 0.8rem 1.2rem;
    text-align: left;
    font-family: var(--font-body);
    font-size: 0.9rem;
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
    color: var(--primary);
}

.poly-btn:hover {
    background: var(--marble);
    border-color: var(--gold);
}

.poly-btn.active {
    background: var(--primary);
    color: var(--marble-light);
    border-color: var(--primary);
}

.sim-actions {
    display: flex;
    gap: 1rem;
}

.step-card {
    background: var(--marble-light);
    border-left: 4px solid var(--gold);
    padding: 1.2rem;
    font-size: 0.9rem;
}

.step-card h4 {
    font-size: 0.9rem;
    text-transform: uppercase;
    margin-bottom: 0.4rem;
}

.canvas-wrapper {
    background: #1e1b18;
    padding: 1rem;
    border: 4px double var(--gold);
    box-shadow: var(--shadow);
    position: relative;
}

#compass-canvas {
    background: #11100e;
    width: 100%;
    height: auto;
    display: block;
    aspect-ratio: 1;
}

.canvas-coordinates {
    display: flex;
    justify-content: space-between;
    font-size: 0.7rem;
    color: #6e675f;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-top: 0.5rem;
}

/* Concepts Grid */
.concepts {
    padding: 6rem 0;
    background: var(--marble-light);
}

.concepts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.concept-card {
    background: #fff;
    border: 1px solid var(--border);
    padding: 2.2rem;
    transition: var(--transition);
    cursor: pointer;
    position: relative;
}

.concept-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
    border-color: var(--gold);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.2rem;
    border-bottom: 1px solid var(--border-light);
    padding-bottom: 0.8rem;
}

.card-num {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    color: var(--gold);
}

.concept-card h3 {
    font-size: 1.2rem;
    color: var(--primary);
}

.concept-card p {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 0.8rem;
}

.card-relevance {
    border-top: 1px dashed var(--border-light);
    padding-top: 0.8rem;
}

.card-example {
    font-style: italic;
    color: var(--gold-dark) !important;
}

/* Narrative Section */
.narrative-section {
    padding: 6rem 0;
    background: #fff;
    border-bottom: 1px solid var(--border);
}

.narrative-quote {
    background: var(--marble-light);
    padding: 3rem;
    border: 1px solid var(--border);
    position: relative;
}

.narrative-quote blockquote {
    font-family: 'Playfair Display', serif;
    font-size: 1.4rem;
    font-style: italic;
    color: var(--primary);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.narrative-quote cite {
    font-family: var(--font-body);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--gold-dark);
    display: block;
}

/* Secondary interaction */
.secondary-interaction {
    padding: 6rem 0;
    background: var(--primary);
    color: var(--marble-light);
}

.query-options {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 2rem;
    flex-wrap: wrap;
}

.query-btn {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--marble-light);
    padding: 1rem 2rem;
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--transition);
}

.query-btn:hover {
    border-color: var(--gold);
    color: var(--gold);
}

.query-btn.active {
    background: var(--gold);
    color: var(--primary);
    border-color: var(--gold);
}

.query-result-panel {
    margin-top: 3rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    background: var(--primary-light);
    border: 1px solid var(--border);
    padding: 2.5rem;
    min-height: 150px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.query-result-panel p.default-msg {
    color: #7e7368;
    font-style: italic;
}

.query-result-content {
    text-align: left;
}

.query-result-content h4 {
    color: var(--gold);
    font-size: 1.3rem;
    margin-bottom: 1rem;
}

.query-result-content p {
    font-size: 1rem;
    line-height: 1.7;
}

/* Full Bio */
.full-bio {
    padding: 6rem 0;
    background: #fff;
    border-bottom: 1px solid var(--border);
}

.bio-img-frame {
    text-align: center;
}

.bio-img-frame img {
    width: 100%;
    max-width: 320px;
    height: auto;
    box-shadow: 20px 20px 0 var(--marble);
    border: 1px solid var(--border);
}

.caption {
    margin-top: 2rem;
    font-family: var(--font-heading);
    font-size: 1.1rem;
}

/* Takeaway */
.takeaway {
    padding: 6rem 0;
    background: var(--marble-light);
}

.takeaway-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
    margin-top: 3rem;
}

.t-item {
    background: #fff;
    padding: 3rem 2rem;
    border: 1px solid var(--border);
    transition: var(--transition);
}

.t-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
}

.t-item .icon {
    font-size: 2.5rem;
    display: block;
    margin-bottom: 1rem;
}

.t-item h3 {
    font-size: 1.2rem;
    margin-bottom: 0.8rem;
}

.t-item p {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* Readers and Actuality */
.readers-section {
    padding: 6rem 0;
    background: #fff;
    border-bottom: 1px solid var(--border);
}

.reader-profiles {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.profile-item {
    border-left: 3px solid var(--gold);
    padding-left: 1.5rem;
}

.profile-item h4 {
    font-size: 1.1rem;
    margin-bottom: 0.3rem;
}

.profile-item p {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* CTA */
.cta {
    background: linear-gradient(rgba(28,26,23,0.92), rgba(28,26,23,0.96)), url('data:image/svg+xml;utf8,<svg xmlns=%22http://www.w3.org/2000/svg%22 width=%22100%22 height=%22100%22 viewBox=%220 0 100 100%22><circle cx=%2250%22 cy=%2250%22 r=%2240%22 stroke=%22rgba(197,160,89,0.05)%22 stroke-width=%221%22 fill=%22none%22/></svg>');
    color: var(--marble-light);
    padding: 8rem 0;
    border-bottom: 1px solid var(--gold);
}

.cta h2 {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    color: var(--gold);
}

.cta p {
    font-size: 1.1rem;
    margin-bottom: 2.5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    color: #b0a599;
}

.cta-btns {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Footer */
.site-footer {
    background: var(--primary);
    padding: 4rem 0;
    text-align: center;
    font-size: 0.85rem;
    color: #8c8276;
    border-top: 1px solid rgba(197, 160, 89, 0.1);
}

.site-footer strong {
    color: var(--marble-light);
}

.site-footer a {
    color: var(--gold);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: var(--transition);
}

.site-footer a:hover {
    color: var(--marble-light);
    border-bottom-color: var(--marble-light);
}

/* Responsive */
@media (max-width: 968px) {
    .grid-2 { grid-template-columns: 1fr; gap: 3rem; }
    .hero { text-align: center; padding: 4rem 0; }
    .hero-content { grid-template-columns: 1fr; }
    .hero-visual { display: none; }
    .hero h1 { font-size: 2.8rem; }
    .hero-meta { justify-content: center; margin-bottom: 2rem; }
    .hero-cta { justify-content: center; }
    .author-summary { flex-direction: column; text-align: center; }
    .simulator-layout { grid-template-columns: 1fr; }
    .takeaway-grid { grid-template-columns: 1fr; }
    .modal-content { width: 95%; }
    .modal-body { padding: 2rem; }
}