/* IT-CAFFE: PREMIUM EXHIBITION DESIGN */
/* Modern, Professional, International */

:root {
    /* Color System */
    --primary: #000000;
    --secondary: #ffffff;
    --accent: #0066ff;
    --accent-hover: #0052cc;
    
    --bg: #ffffff;
    --bg-alt: #f8f9fa;
    --bg-dark: #0a0a0a;
    
    --text-primary: #0a0a0a;
    --text-secondary: #525252;
    --text-muted: #9ca3af;
    --text-light: #ffffff;
    
    --border: #e5e7eb;
    --border-dark: #1a1a1a;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);
    
    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Space Grotesk', -apple-system, sans-serif;
    
    /* Layout */
    --container: 1280px;
    --radius: 16px;
    --radius-sm: 8px;
    --radius-lg: 24px;
    
    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.5rem;
    --space-6: 2rem;
    --space-8: 3rem;
    --space-10: 4rem;
    --space-12: 6rem;
    
    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    background: var(--bg);
    color: var(--text-primary);
    font-family: var(--font-sans);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* --- LAYOUT --- */
.container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 var(--space-6);
    width: 100%;
}

.grid {
    display: grid;
}

.grid-2 {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
}

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-6);
}

/* --- TYPOGRAPHY --- */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

h1 {
    font-size: clamp(3rem, 6vw, 5.5rem);
    font-weight: 800;
    letter-spacing: -0.03em;
}

h2 {
    font-size: clamp(2rem, 4vw, 3.5rem);
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
}

h4 {
    font-size: 1.25rem;
}

p {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.7;
}

/* --- HEADER --- */
.corp-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 80px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
    transition: var(--transition);
}

.corp-header.scrolled {
    box-shadow: var(--shadow-md);
}

.header-inner {
    height: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.brand-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-weight: 700;
    font-size: 1.25rem;
    letter-spacing: -0.01em;
    white-space: nowrap;
    color: var(--text-primary);
}

.brand-logo .logo-icon {
    height: 36px;
    width: auto;
    flex-shrink: 0;
}

.corp-nav {
    display: flex;
    gap: var(--space-8);
    align-items: center;
}

.nav-link {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--text-secondary);
    transition: var(--transition);
    position: relative;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: width 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-primary);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.lang-switcher {
    display: flex;
    gap: var(--space-2);
    align-items: center;
}

.lang-switcher a {
    padding: var(--space-1) var(--space-3);
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.lang-switcher a.active,
.lang-switcher a:hover {
    background: var(--bg-alt);
    color: var(--text-primary);
}

.btn-primary-sm {
    display: inline-flex;
    align-items: center;
    padding: var(--space-3) var(--space-5);
    background: var(--primary);
    color: var(--secondary);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.btn-primary-sm:hover {
    background: var(--accent);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* --- HERO --- */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 120px 0 var(--space-12);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(ellipse at center, rgba(0, 102, 255, 0.03) 0%, transparent 70%);
    pointer-events: none;
}

.hero-label {
    display: inline-block;
    padding: var(--space-2) var(--space-4);
    background: var(--bg-alt);
    border: 1px solid var(--border);
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-secondary);
    margin-bottom: var(--space-6);
}

.hero-desc {
    max-width: 700px;
    margin: var(--space-6) auto var(--space-8);
    font-size: 1.25rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

.hero-actions {
    display: flex;
    gap: var(--space-4);
    justify-content: center;
    flex-wrap: wrap;
    margin-top: var(--space-8);
}

/* --- STATS --- */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-8);
    padding: var(--space-10) 0;
}

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

.stat-value {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    font-family: var(--font-display);
    color: var(--text-primary);
    line-height: 1;
    margin-bottom: var(--space-2);
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* --- CARDS --- */
.bento-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: var(--space-8);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

.bento-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--accent);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.bento-card:hover::before {
    transform: scaleX(1);
}

.bento-card:hover {
    border-color: var(--accent);
    box-shadow: var(--shadow-xl);
    transform: translateY(-8px);
}

.card-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-alt);
    border: 2px solid var(--border);
    border-radius: var(--radius);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-5);
    transition: var(--transition);
}

.bento-card:hover .card-icon {
    background: var(--accent);
    color: var(--secondary);
    border-color: var(--accent);
    transform: scale(1.1) rotate(5deg);
}

/* --- BUTTONS --- */
.btn-glass {
    display: inline-flex;
    align-items: center;
    padding: var(--space-3) var(--space-5);
    background: var(--bg);
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    transition: var(--transition);
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.btn-glass:hover {
    background: var(--primary);
    color: var(--secondary);
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* --- BADGES --- */
.exhibition-badge {
    display: inline-block;
    padding: var(--space-2) var(--space-4);
    background: var(--bg-alt);
    border: 1px solid var(--border);
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    transition: var(--transition);
}

.exhibition-badge:hover {
    background: var(--accent);
    color: var(--secondary);
    border-color: var(--accent);
}

/* --- SECTIONS --- */
.section {
    padding: var(--space-12) 0;
}

.section-label {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--accent);
    margin-bottom: var(--space-4);
    display: block;
}

.text-center {
    text-align: center;
}

.mb-8 {
    margin-bottom: var(--space-8);
}

/* --- FOOTER --- */
.corp-footer {
    margin-top: var(--space-12);
    padding: var(--space-12) 0 var(--space-8);
    background: var(--bg-dark);
    color: var(--text-light);
    border-top: 1px solid var(--border-dark);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-8);
    margin-bottom: var(--space-8);
}

.corp-footer h4 {
    color: var(--text-light);
    font-size: 0.875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-5);
}

.corp-footer a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.875rem;
    margin-bottom: var(--space-3);
    display: block;
    transition: var(--transition);
}

.corp-footer a:hover {
    color: var(--text-light);
    padding-left: var(--space-2);
}

.corp-footer .brand-logo {
    color: var(--text-light);
}

/* --- FORMS --- */
.corp-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-5);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: var(--space-4);
    background: var(--bg);
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 0.9375rem;
    font-family: var(--font-sans);
    color: var(--text-primary);
    transition: var(--transition);
    outline: none;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(0, 102, 255, 0.1);
}

.form-textarea {
    min-height: 120px;
    resize: vertical;
}

button[type="submit"],
.btn-submit {
    padding: var(--space-4) var(--space-6);
    background: var(--primary);
    color: var(--secondary);
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.9375rem;
    font-weight: 600;
    font-family: var(--font-sans);
    cursor: pointer;
    transition: var(--transition);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

button[type="submit"]:hover,
.btn-submit:hover {
    background: var(--accent);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* --- MOBILE MENU --- */
.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-2);
}

.mobile-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition);
    border-radius: 2px;
}

.mobile-menu {
    position: fixed;
    top: 80px;
    left: 0;
    width: 100%;
    height: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    overflow: hidden;
    transition: height 0.3s ease;
    z-index: 999;
    box-shadow: var(--shadow-lg);
}

.mobile-menu.open {
    height: calc(100vh - 80px);
}

.mobile-menu-content {
    padding: var(--space-6);
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.mobile-menu-content a {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    padding: var(--space-3) 0;
    border-bottom: 1px solid var(--border);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.mobile-menu-content a:hover {
    color: var(--accent);
    padding-left: var(--space-4);
}

/* --- REVEAL ANIMATIONS --- */
.reveal-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal-scroll.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* --- UTILITIES --- */
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-1 { margin-top: var(--space-4); }
.mt-2 { margin-top: var(--space-6); }
.mt-3 { margin-top: var(--space-8); }
.mb-1 { margin-bottom: var(--space-4); }
.mb-2 { margin-bottom: var(--space-6); }
.mb-3 { margin-bottom: var(--space-8); }

.desktop-only { display: block; }
.mobile-only { display: none; }

/* --- SCROLLBAR --- */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-alt);
}

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* --- FOCUS --- */
*:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
    border-radius: 2px;
}