/* =============================================
   LIBERTEKO - Site Vitrine
   Styles CSS
============================================= */

/* Variables CSS */
:root {
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --secondary-color: #8b5cf6;
    --accent-color: #06b6d4;
    --text-color: #1e293b;
    --text-light: #64748b;
    --bg-color: #ffffff;
    --bg-light: #f8fafc;
    --bg-dark: #0f172a;
    --border-color: #e2e8f0;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --gradient-primary: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    --gradient-dark: linear-gradient(135deg, #1e293b 0%, #334155 100%);
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
}

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

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

a:hover {
    color: var(--primary-dark);
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: var(--transition);
}

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

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-color);
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.25rem;
}

.nav {
    display: flex;
    gap: 2rem;
}

.nav a {
    color: var(--text-light);
    font-weight: 500;
    position: relative;
}

.nav a:hover {
    color: var(--primary-color);
}

.nav a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition);
}

.nav a:hover::after {
    width: 100%;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 0.5rem;
}

.menu-toggle span {
    width: 25px;
    height: 2px;
    background: var(--text-color);
    transition: var(--transition);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: var(--bg-light);
    padding-top: 70px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    background: var(--gradient-primary);
    opacity: 0.05;
    clip-path: polygon(20% 0, 100% 0, 100% 100%, 0% 100%);
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-content p {
    font-size: 1.25rem;
    color: var(--text-light);
    margin-bottom: 2rem;
    max-width: 500px;
}

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

.hero-visual {
    position: relative;
}

.hero-visual img {
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
}

.hero-card {
    position: absolute;
    background: white;
    padding: 1rem 1.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.hero-card.card-1 {
    top: 10%;
    left: -10%;
    animation: float 3s ease-in-out infinite;
}

.hero-card.card-2 {
    bottom: 15%;
    right: -5%;
    animation: float 3s ease-in-out infinite 1.5s;
}

.hero-card-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.hero-card-icon.games { background: #fef3c7; color: #f59e0b; }
.hero-card-icon.books { background: #dbeafe; color: #3b82f6; }
.hero-card-icon.films { background: #fce7f3; color: #ec4899; }
.hero-card-icon.records { background: #d1fae5; color: #10b981; }

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    border: none;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 14px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.5);
    color: white;
}

.btn-secondary {
    background: white;
    color: var(--text-color);
    border: 2px solid var(--border-color);
}

.btn-secondary:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

/* Section Title */
.section {
    padding: 6rem 0;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 4rem;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.section-header p {
    font-size: 1.125rem;
    color: var(--text-light);
}

.section-badge {
    display: inline-block;
    padding: 0.375rem 1rem;
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary-color);
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: 50px;
    margin-bottom: 1rem;
}

/* Collections Grid */
.collections-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.collection-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: 2rem;
    text-align: center;
    border: 1px solid var(--border-color);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.collection-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: var(--transition);
}

.collection-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

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

.collection-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
}

.collection-icon.games { background: linear-gradient(135deg, #fef3c7, #fde68a); }
.collection-icon.books { background: linear-gradient(135deg, #dbeafe, #bfdbfe); }
.collection-icon.films { background: linear-gradient(135deg, #fce7f3, #fbcfe8); }
.collection-icon.records { background: linear-gradient(135deg, #d1fae5, #a7f3d0); }

.collection-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    color: var(--text-color);
}

.collection-card p {
    font-size: 0.9375rem;
    color: var(--text-light);
}

/* Features Section */
.features {
    background: var(--bg-light);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.feature-card:hover {
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    width: 56px;
    height: 56px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    margin-bottom: 1.25rem;
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    color: var(--text-color);
}

.feature-card p {
    color: var(--text-light);
    font-size: 0.9375rem;
}

/* Screenshots Section */
.screenshots {
    background: var(--gradient-dark);
    color: white;
}

.screenshots .section-header h2 {
    color: white;
}

.screenshots .section-header p {
    color: rgba(255, 255, 255, 0.7);
}

.screenshots-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.screenshot-card {
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    overflow: hidden;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition);
}

.screenshot-card:hover {
    transform: scale(1.02);
    background: rgba(255, 255, 255, 0.15);
}

.screenshot-placeholder {
    height: 250px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.3), rgba(139, 92, 246, 0.3));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
}

.screenshot-info {
    padding: 1.5rem;
}

.screenshot-info h3 {
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
}

.screenshot-info p {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.7);
}

/* Tech Section */
.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.tech-card {
    text-align: center;
    padding: 2rem 1.5rem;
    background: white;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.tech-card:hover {
    border-color: var(--primary-color);
}

.tech-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.tech-card h4 {
    font-size: 1rem;
    margin-bottom: 0.25rem;
}

.tech-card p {
    font-size: 0.875rem;
    color: var(--text-light);
}

/* Stats Section */
.stats {
    background: var(--gradient-primary);
    padding: 4rem 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    text-align: center;
    color: white;
}

.stat-item h3 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.stat-item p {
    font-size: 1rem;
    opacity: 0.9;
}

/* CTA Section */
.cta {
    text-align: center;
    padding: 6rem 0;
    background: var(--bg-light);
}

.cta h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.cta p {
    font-size: 1.125rem;
    color: var(--text-light);
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Footer */
.footer {
    background: var(--bg-dark);
    color: white;
    padding: 4rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-brand .logo {
    color: white;
    margin-bottom: 1rem;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9375rem;
}

.footer-links h4 {
    font-size: 1rem;
    margin-bottom: 1.25rem;
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9375rem;
}

.footer-links a:hover {
    color: white;
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.5);
}

.footer-social {
    display: flex;
    gap: 1rem;
}

.footer-social a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    transition: var(--transition);
}

.footer-social a:hover {
    background: var(--primary-color);
}

/* Feature Highlight - Large feature blocks */
.feature-highlight {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    margin-bottom: 5rem;
    padding-bottom: 5rem;
    border-bottom: 1px solid var(--border-color);
}

.feature-highlight:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.feature-highlight.reverse {
    direction: rtl;
}

.feature-highlight.reverse > * {
    direction: ltr;
}

.feature-highlight-content {
    position: relative;
}

.feature-number {
    font-size: 4rem;
    font-weight: 800;
    color: var(--primary-color);
    opacity: 0.15;
    position: absolute;
    top: -2rem;
    left: -1rem;
    line-height: 1;
}

.feature-highlight-content h3 {
    font-size: 1.75rem;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.feature-highlight-content > p {
    font-size: 1.125rem;
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

.feature-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.feature-list li {
    position: relative;
    padding-left: 1.75rem;
    margin-bottom: 0.75rem;
    color: var(--text-color);
    font-size: 0.9375rem;
}

.feature-list li::before {
    content: '\2713';
    position: absolute;
    left: 0;
    color: var(--success-color);
    font-weight: 700;
}

.feature-highlight-visual {
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-icon-large {
    width: 200px;
    height: 200px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 5rem;
    color: white;
    box-shadow: 0 20px 40px rgba(99, 102, 241, 0.3);
}

/* Features Extra Section */
.features-extra {
    background: var(--bg-light);
}

/* Portals Section */
.portals-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    align-items: stretch;
}

.portal-card {
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    overflow: hidden;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition);
}

.portal-card.featured {
    transform: scale(1.05);
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.portal-card:hover {
    transform: translateY(-8px);
    background: rgba(255, 255, 255, 0.15);
}

.portal-card.featured:hover {
    transform: scale(1.05) translateY(-8px);
}

.portal-header {
    padding: 2rem;
    text-align: center;
}

.portal-header.public {
    background: linear-gradient(135deg, rgba(6, 182, 212, 0.3), rgba(59, 130, 246, 0.3));
}

.portal-header.usager {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.4), rgba(139, 92, 246, 0.4));
}

.portal-header.admin {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.3), rgba(239, 68, 68, 0.3));
}

.portal-icon {
    font-size: 3rem;
    display: block;
    margin-bottom: 0.75rem;
}

.portal-header h3 {
    font-size: 1.25rem;
    margin: 0;
}

.portal-content {
    padding: 1.5rem 2rem 2rem;
}

.portal-content ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.portal-content li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.75rem;
    font-size: 0.9375rem;
    color: rgba(255, 255, 255, 0.85);
}

.portal-content li::before {
    content: '\2713';
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-weight: 700;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-content p {
        max-width: 100%;
    }

    .hero-buttons {
        justify-content: center;
    }

    .hero-visual {
        display: none;
    }

    .feature-highlight {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .feature-highlight.reverse {
        direction: ltr;
    }

    .feature-highlight-visual {
        order: -1;
    }

    .feature-icon-large {
        width: 150px;
        height: 150px;
        font-size: 3.5rem;
    }

    .collections-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .portals-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }

    .portal-card.featured {
        transform: none;
    }

    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 1.5rem;
        gap: 1rem;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-lg);
    }

    .nav.active {
        display: flex;
    }

    .menu-toggle {
        display: flex;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }

    .section-header h2 {
        font-size: 2rem;
    }

    .feature-highlight {
        margin-bottom: 3rem;
        padding-bottom: 3rem;
    }

    .feature-number {
        font-size: 3rem;
        top: -1.5rem;
    }

    .feature-highlight-content h3 {
        font-size: 1.5rem;
    }

    .feature-icon-large {
        width: 120px;
        height: 120px;
        font-size: 3rem;
    }

    .collections-grid,
    .features-grid,
    .screenshots-grid {
        grid-template-columns: 1fr;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .stat-item h3 {
        font-size: 2rem;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
    }
}

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 2rem;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .section {
        padding: 4rem 0;
    }
}