/* ===== CAPÍTULO 4: BERTONE - STYLES ===== */

/* ===== VARIABLES & RESET ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --color-bg: #0a0a0a;
    --color-text: #ffffff;
    --color-text-secondary: #b0b0b0;
    --color-accent: #c00;
    --color-accent-hover: #a00;
    --color-gold: #d4af37;
    --color-bertone-blue: #0066cc;
    --color-bertone-orange: #ff6600;
    --color-card-bg: #1a1a1a;
    --color-border: #2a2a2a;
    
    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Inter', sans-serif;
    --font-serif: 'Playfair Display', serif;
    
    --container-width: 900px;
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 48px;
    --spacing-xl: 64px;
    
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.8;
    overflow-x: hidden;
}

/* ===== HEADER ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    z-index: 1000;
    transition: var(--transition);
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-sm) var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-heading);
    font-size: 20px;
    font-weight: 700;
    letter-spacing: 2px;
    color: var(--color-text);
    text-decoration: none;
    transition: var(--transition);
}

.logo:hover {
    color: var(--color-accent);
}

.nav-desktop {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.nav-desktop a {
    color: var(--color-text);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
    padding: 8px 16px;
    border-radius: 4px;
}

.nav-desktop a:hover {
    color: var(--color-accent);
    background: rgba(204, 0, 0, 0.1);
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--color-text);
    font-size: 24px;
    cursor: pointer;
    transition: var(--transition);
}

.menu-toggle:hover {
    color: var(--color-accent);
}

/* ===== BREADCRUMB ===== */
.breadcrumb {
    padding: 100px var(--spacing-md) var(--spacing-sm);
    background: var(--color-card-bg);
    border-bottom: 1px solid var(--color-border);
}

.breadcrumb .container {
    max-width: var(--container-width);
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 13px;
}

.breadcrumb a {
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: var(--transition);
}

.breadcrumb a:hover {
    color: var(--color-accent);
}

.breadcrumb i {
    color: var(--color-border);
    font-size: 10px;
}

.breadcrumb span {
    color: var(--color-gold);
}

/* ===== HERO CHAPTER ===== */
.hero-chapter {
    position: relative;
    min-height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #0a0a0a 0%, #1a1a1a 100%);
    background-image: url('https://images.unsplash.com/photo-1544829099-b9a0c07fad1a?w=1920&q=80');
    background-size: cover;
    background-position: center;
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(10, 10, 10, 0.94) 0%, rgba(26, 26, 26, 0.88) 100%);
    z-index: 1;
}

.hero-chapter-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: var(--container-width);
    padding: var(--spacing-xl) var(--spacing-md);
}

.chapter-label {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(0, 102, 204, 0.15);
    border: 1px solid var(--color-bertone-blue);
    border-radius: 20px;
    color: var(--color-bertone-blue);
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--spacing-sm);
}

.hero-chapter-title {
    font-family: var(--font-heading);
    font-size: clamp(32px, 5vw, 56px);
    font-weight: 700;
    letter-spacing: -1px;
    margin-bottom: var(--spacing-sm);
    line-height: 1.1;
}

.hero-chapter-subtitle {
    font-family: var(--font-serif);
    font-size: clamp(16px, 2.5vw, 24px);
    font-style: italic;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
}

.hero-meta {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    font-size: 14px;
    color: var(--color-text-secondary);
    flex-wrap: wrap;
}

.hero-meta span {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

/* ===== ARTICLE CONTENT ===== */
.article-content {
    padding: var(--spacing-xl) var(--spacing-md);
}

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

.content-section {
    margin-bottom: var(--spacing-xl);
}

/* Typography */
.lead {
    font-size: 20px;
    line-height: 1.7;
    color: var(--color-text);
    margin-bottom: var(--spacing-md);
}

.intro-section {
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 2px solid var(--color-border);
}

h2 {
    font-family: var(--font-heading);
    font-size: clamp(24px, 3vw, 32px);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-gold);
}

h2 i {
    font-size: 0.8em;
}

h3 {
    font-family: var(--font-heading);
    font-size: clamp(18px, 2.5vw, 24px);
    font-weight: 600;
    margin: var(--spacing-lg) 0 var(--spacing-sm);
    color: var(--color-text);
}

h4 {
    font-family: var(--font-heading);
    font-size: 16px;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--color-gold);
}

p {
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

strong {
    color: var(--color-gold);
    font-weight: 600;
}

em {
    font-family: var(--font-serif);
    font-style: italic;
    color: var(--color-text-secondary);
}

/* ===== MANIFESTO BOX ===== */
.manifesto-box {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: linear-gradient(135deg, rgba(0, 102, 204, 0.1) 0%, transparent 100%);
    border-left: 4px solid var(--color-bertone-blue);
    border-radius: 4px;
    margin: var(--spacing-lg) 0;
}

.manifesto-box i {
    flex-shrink: 0;
    font-size: 32px;
    color: var(--color-bertone-blue);
}

.manifesto-box strong {
    display: block;
    font-size: 18px;
    margin-bottom: 4px;
    color: var(--color-bertone-blue);
}

.manifesto-box p {
    margin: 0;
    font-size: 15px;
    color: var(--color-text-secondary);
}

/* ===== FOUNDERS GRID ===== */
.founders-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin: var(--spacing-lg) 0;
}

.founder-card {
    background: var(--color-card-bg);
    border: 2px solid var(--color-border);
    border-radius: 12px;
    padding: var(--spacing-md);
    text-align: center;
    transition: var(--transition);
}

.founder-card:hover {
    border-color: var(--color-bertone-blue);
    transform: translateY(-6px);
    box-shadow: 0 10px 28px rgba(0, 102, 204, 0.2);
}

.founder-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto var(--spacing-sm);
    background: linear-gradient(135deg, var(--color-bertone-blue) 0%, var(--color-bertone-orange) 100%);
    color: var(--color-text);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-size: 32px;
}

.founder-card h3 {
    margin: var(--spacing-sm) 0 4px 0;
    color: var(--color-gold);
}

.founder-period {
    font-size: 13px;
    color: var(--color-bertone-blue);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.founder-card p {
    font-size: 14px;
    margin: 0;
    color: var(--color-text-secondary);
}

/* ===== PHILOSOPHY SECTION ===== */
.philosophy-section {
    background: linear-gradient(135deg, rgba(0, 102, 204, 0.05) 0%, transparent 100%);
    padding: var(--spacing-lg);
    border-radius: 12px;
}

.quote-box.bertone {
    background: linear-gradient(135deg, rgba(0, 102, 204, 0.1) 0%, rgba(255, 102, 0, 0.05) 100%);
    border-left: 4px solid var(--color-bertone-orange);
    padding: var(--spacing-lg);
    margin: var(--spacing-lg) 0;
    border-radius: 8px;
}

.quote-box i {
    color: var(--color-bertone-orange);
    font-size: 32px;
    margin-bottom: var(--spacing-sm);
}

.quote-box p {
    font-family: var(--font-serif);
    font-size: 19px;
    font-style: italic;
    line-height: 1.7;
    color: var(--color-text);
}

.quote-author {
    font-size: 15px !important;
    font-style: normal !important;
    font-family: var(--font-body) !important;
    color: var(--color-text-secondary) !important;
    margin-top: var(--spacing-sm);
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--color-border);
}

/* ===== PRINCIPLES GRID ===== */
.principles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--spacing-md);
    margin: var(--spacing-lg) 0;
}

.principle-item {
    background: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: var(--spacing-md);
    position: relative;
    overflow: hidden;
    transition: var(--transition);
}

.principle-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-bertone-blue) 0%, var(--color-bertone-orange) 100%);
    opacity: 0;
    transition: var(--transition);
}

.principle-item:hover {
    border-color: var(--color-bertone-blue);
    transform: translateY(-4px);
}

.principle-item:hover::before {
    opacity: 1;
}

.principle-number {
    font-family: var(--font-heading);
    font-size: 36px;
    font-weight: 900;
    color: var(--color-bertone-blue);
    opacity: 0.2;
    line-height: 1;
    margin-bottom: var(--spacing-xs);
}

.principle-item h4 {
    margin-bottom: var(--spacing-xs);
    color: var(--color-gold);
}

.principle-item p {
    font-size: 14px;
    margin: 0;
    color: var(--color-text-secondary);
}

/* ===== MASTERPIECE CARDS ===== */
.masterpiece-card {
    background: var(--color-card-bg);
    border: 2px solid var(--color-border);
    border-radius: 16px;
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    position: relative;
    overflow: hidden;
    transition: var(--transition);
}

.masterpiece-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 6px;
    height: 100%;
    background: linear-gradient(180deg, var(--color-bertone-blue) 0%, var(--color-bertone-orange) 100%);
}

.masterpiece-card:hover {
    border-color: var(--color-gold);
    box-shadow: 0 12px 32px rgba(212, 175, 55, 0.15);
}

.masterpiece-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--color-border);
}

.masterpiece-year {
    flex-shrink: 0;
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--color-bertone-blue) 0%, var(--color-bertone-orange) 100%);
    color: var(--color-text);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    font-family: var(--font-heading);
    font-size: 24px;
    font-weight: 900;
}

.masterpiece-info h3 {
    margin: 0 0 4px 0;
    color: var(--color-gold);
}

.masterpiece-tagline {
    font-family: var(--font-serif);
    font-style: italic;
    color: var(--color-text-secondary);
    margin: 0;
}

.masterpiece-content p {
    margin-bottom: var(--spacing-md);
}

/* ===== MASTERPIECE STATS ===== */
.masterpiece-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-md);
    margin: var(--spacing-lg) 0;
    padding: var(--spacing-md);
    background: rgba(0, 102, 204, 0.05);
    border-radius: 8px;
}

.masterpiece-stats .stat-item {
    text-align: center;
}

.masterpiece-stats strong {
    display: block;
    font-family: var(--font-heading);
    font-size: 28px;
    color: var(--color-bertone-blue);
    margin-bottom: 4px;
}

.masterpiece-stats span {
    font-size: 13px;
    color: var(--color-text-secondary);
}

/* ===== INNOVATION BADGE ===== */
.innovation-badge {
    display: flex;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: linear-gradient(135deg, rgba(255, 102, 0, 0.1) 0%, transparent 100%);
    border: 1px solid var(--color-bertone-orange);
    border-radius: 8px;
    margin-top: var(--spacing-lg);
}

.innovation-badge i {
    flex-shrink: 0;
    font-size: 24px;
    color: var(--color-bertone-orange);
}

.innovation-badge p {
    margin: 0;
    font-size: 14px;
}

.innovation-badge strong {
    color: var(--color-bertone-orange);
}

/* ===== CONCEPTS SECTION ===== */
.concepts-section {
    background: linear-gradient(135deg, rgba(255, 102, 0, 0.05) 0%, transparent 100%);
    padding: var(--spacing-lg);
    border-radius: 12px;
}

.concepts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin: var(--spacing-lg) 0;
}

.concept-card {
    background: var(--color-card-bg);
    border: 2px solid var(--color-border);
    border-radius: 12px;
    padding: var(--spacing-md);
    transition: var(--transition);
    position: relative;
}

.concept-card:hover {
    border-color: var(--color-bertone-orange);
    transform: translateY(-6px);
    box-shadow: 0 10px 28px rgba(255, 102, 0, 0.2);
}

.concept-year {
    display: inline-block;
    padding: 4px 12px;
    background: var(--color-bertone-orange);
    color: var(--color-bg);
    font-size: 13px;
    font-weight: 700;
    border-radius: 4px;
    margin-bottom: var(--spacing-sm);
}

.concept-year-tag {
    background: var(--color-gold);
}

.concept-card h4 {
    margin-bottom: var(--spacing-xs);
    color: var(--color-text);
}

.concept-card p {
    font-size: 14px;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
}

.concept-tag {
    display: inline-block;
    padding: 4px 10px;
    background: rgba(0, 102, 204, 0.15);
    border: 1px solid var(--color-bertone-blue);
    border-radius: 12px;
    font-size: 11px;
    color: var(--color-bertone-blue);
    font-weight: 600;
}

/* ===== RIVALRY SECTION ===== */
.rivalry-section {
    background: var(--color-card-bg);
    padding: var(--spacing-lg);
    border-radius: 12px;
}

.comparison-container {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: var(--spacing-md);
    margin: var(--spacing-lg) 0;
}

.comparison-side {
    background: var(--color-bg);
    border: 2px solid var(--color-border);
    border-radius: 12px;
    padding: var(--spacing-md);
}

.pininfarina-side {
    border-top: 4px solid #DC0000;
}

.bertone-side {
    border-top: 4px solid var(--color-bertone-blue);
}

.comparison-side h3 {
    margin-top: 0;
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.comparison-side ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.comparison-side li {
    padding: var(--spacing-xs) 0;
    font-size: 14px;
    color: var(--color-text-secondary);
}

.comparison-side li strong {
    color: var(--color-gold);
}

.comparison-divider {
    display: flex;
    align-items: center;
    justify-content: center;
}

.vs-badge {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, #DC0000 0%, var(--color-bertone-blue) 100%);
    color: var(--color-text);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-family: var(--font-heading);
    font-size: 18px;
    font-weight: 900;
}

.rivalry-conclusion {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.1) 0%, transparent 100%);
    border: 1px solid var(--color-gold);
    border-radius: 8px;
    margin-top: var(--spacing-lg);
}

.rivalry-conclusion i {
    flex-shrink: 0;
    font-size: 32px;
    color: var(--color-gold);
}

.rivalry-conclusion p {
    margin: 0;
    font-size: 15px;
}

/* ===== DECLINE SECTION ===== */
.decline-section {
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.3) 0%, transparent 100%);
    padding: var(--spacing-lg);
    border-radius: 12px;
}

.timeline-decline {
    margin: var(--spacing-lg) 0;
    border-left: 3px solid var(--color-border);
    padding-left: var(--spacing-md);
}

.timeline-item {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    position: relative;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: calc(-1 * var(--spacing-md) - 6px);
    top: 4px;
    width: 12px;
    height: 12px;
    background: var(--color-bertone-blue);
    border-radius: 50%;
    box-shadow: 0 0 0 4px var(--color-bg);
}

.timeline-year {
    flex-shrink: 0;
    font-family: var(--font-heading);
    font-size: 20px;
    font-weight: 700;
    color: var(--color-gold);
}

.timeline-content h4 {
    margin-top: 0;
    margin-bottom: 4px;
    color: var(--color-text);
}

.timeline-content p {
    font-size: 14px;
    margin: 0;
    color: var(--color-text-secondary);
}

/* ===== LEGACY BOX ===== */
.legacy-box {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.1) 0%, transparent 100%);
    border: 2px solid var(--color-gold);
    border-radius: 12px;
    margin-top: var(--spacing-lg);
}

.legacy-box i {
    flex-shrink: 0;
    font-size: 48px;
    color: var(--color-gold);
}

.legacy-box h3 {
    margin-top: 0;
    color: var(--color-gold);
}

.legacy-box p {
    margin-bottom: var(--spacing-sm);
}

.legacy-quote {
    font-family: var(--font-serif);
    font-style: italic;
    color: var(--color-text-secondary);
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--color-border);
}

/* ===== TABLE ===== */
.table-section {
    background: var(--color-card-bg);
    padding: var(--spacing-lg);
    border-radius: 12px;
}

.table-container {
    overflow-x: auto;
    margin: var(--spacing-md) 0;
}

.bertone-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

.bertone-table thead {
    background: var(--color-bg);
}

.bertone-table th {
    padding: var(--spacing-sm);
    text-align: left;
    font-weight: 600;
    color: var(--color-gold);
    border-bottom: 2px solid var(--color-border);
}

.bertone-table td {
    padding: var(--spacing-sm);
    border-bottom: 1px solid var(--color-border);
    color: var(--color-text);
}

.bertone-table tbody tr {
    transition: var(--transition);
}

.bertone-table tbody tr:hover {
    background: rgba(0, 102, 204, 0.08);
}

/* ===== CHAPTER NAVIGATION ===== */
.chapter-navigation {
    display: flex;
    justify-content: space-between;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 2px solid var(--color-border);
}

.nav-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    color: var(--color-text);
    text-decoration: none;
    transition: var(--transition);
    flex: 1;
}

.nav-btn:hover {
    border-color: var(--color-accent);
    background: rgba(204, 0, 0, 0.1);
}

.nav-btn.prev {
    justify-content: flex-start;
}

.nav-btn.next {
    justify-content: flex-end;
}

.nav-btn i {
    color: var(--color-accent);
}

/* ===== FOOTER ===== */
.footer {
    background: var(--color-card-bg);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-lg) var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--color-bg);
    color: var(--color-text);
    text-decoration: none;
    transition: var(--transition);
    border: 1px solid var(--color-border);
}

.social-link:hover {
    background: var(--color-accent);
    border-color: var(--color-accent);
    transform: translateY(-2px);
}

.footer-credit {
    font-size: 14px;
    color: var(--color-text-secondary);
    text-align: center;
}

.footer-credit a {
    color: var(--color-gold);
    text-decoration: none;
    transition: var(--transition);
}

.footer-credit a:hover {
    color: var(--color-accent);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .nav-desktop {
        display: none;
    }

    .menu-toggle {
        display: block;
    }

    .hero-chapter {
        min-height: 400px;
    }

    .founders-grid,
    .principles-grid,
    .concepts-grid {
        grid-template-columns: 1fr;
    }

    .comparison-container {
        grid-template-columns: 1fr;
    }

    .comparison-divider {
        order: -1;
    }

    .vs-badge {
        width: 48px;
        height: 48px;
        font-size: 16px;
    }

    .chapter-navigation {
        flex-direction: column;
    }

    .nav-btn {
        justify-content: center !important;
    }

    .legacy-box,
    .manifesto-box,
    .rivalry-conclusion {
        flex-direction: column;
        text-align: center;
    }

    .table-container {
        border: 1px solid var(--color-border);
        border-radius: 8px;
    }
}