/* Modern CSS Reset */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #1a1a2e;
    --secondary-color: #16213e;
    --accent-color: #0f3460;
    --highlight-color: #e94560;
    --text-primary: #ffffff;
    --text-secondary: #b8b8b8;
    --bg-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --card-bg: rgba(255, 255, 255, 0.05);
    --border-color: rgba(255, 255, 255, 0.1);
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    --transition: all 0.3s ease;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--primary-color);
    color: var(--text-primary);
    line-height: 1.6;
    font-size: 16px;
    overflow-x: hidden;
}

/* Header Styles */
header {
    background: rgba(26, 26, 46, 0.95);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
}

nav {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    background: var(--bg-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
    flex-wrap: wrap;
}

.nav-links a {
    color: var(--text-primary);
    text-decoration: none;
    transition: var(--transition);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--highlight-color);
    transition: var(--transition);
}

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

.lang-switcher {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.lang-switcher a {
    padding: 0.5rem 1rem;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 5px;
    color: var(--text-primary);
    text-decoration: none;
    transition: var(--transition);
    font-size: 0.9rem;
}

.lang-switcher a:hover,
.lang-switcher a.active {
    background: var(--highlight-color);
    border-color: var(--highlight-color);
    transform: translateY(-2px);
}

/* Hero Section */
.hero {
    background: var(--bg-gradient);
    padding: 4rem 2rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="100" height="100" patternUnits="userSpaceOnUse"><path d="M 100 0 L 0 0 0 100" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="1"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    margin-bottom: 1rem;
    font-weight: 700;
    line-height: 1.2;
}

.hero p {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 2rem;
}

/* Main Content */
main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 3rem 2rem;
}

/* Content Sections */
.content-section {
    margin-bottom: 4rem;
}

.content-section h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    position: relative;
    padding-bottom: 1rem;
}

.content-section h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background: var(--highlight-color);
    border-radius: 2px;
}

.content-section h3 {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    margin: 2rem 0 1rem;
    color: var(--text-primary);
}

.content-section p {
    margin-bottom: 1.5rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* Card Styles */
.card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 15px;
    padding: 2rem;
    margin-bottom: 2rem;
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

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

.card h3 {
    margin-top: 0;
    color: var(--highlight-color);
}

/* Image Styles */
.content-image {
    width: 100%;
    max-width: 600px;
    height: auto;
    border-radius: 10px;
    margin: 2rem auto;
    display: block;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.content-image:hover {
    transform: scale(1.02);
}

/* FAQ Styles */
.faq-section {
    margin: 4rem 0;
}

.faq-item {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    margin-bottom: 1rem;
    overflow: hidden;
    transition: var(--transition);
}

.faq-question {
    padding: 1.5rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    color: var(--text-primary);
    transition: var(--transition);
}

.faq-question:hover {
    background: rgba(255, 255, 255, 0.05);
}

.faq-question::after {
    content: '+';
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--highlight-color);
    transition: var(--transition);
}

.faq-item.active .faq-question::after {
    content: '−';
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    padding: 0 1.5rem;
}

.faq-item.active .faq-answer {
    max-height: 500px;
    padding: 0 1.5rem 1.5rem;
}

.faq-answer p {
    color: var(--text-secondary);
    line-height: 1.8;
}

/* Links in Content */
.content-section a {
    color: var(--highlight-color);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: var(--transition);
}

.content-section a:hover {
    border-bottom-color: var(--highlight-color);
}

/* Footer */
footer {
    margin-top: 4rem;
    padding: 3rem 1.5rem;
    background: linear-gradient(135deg, #0f172a 0%, #0b1327 50%, #0a0f1f 100%);
    color: #e8eefc;
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: 0 -10px 28px rgba(0, 0, 0, 0.35);
}

footer p {
    color: #c6d4f5;
    margin: 0.4rem auto;
    max-width: 980px;
    line-height: 1.6;
}

footer a {
    color: #8fc5ff;
    text-decoration: none;
    display: inline-block;
    margin: 4px 6px;
    padding: 6px 12px;
    border-radius: 10px;
    background: rgba(143, 197, 255, 0.08);
    transition: all 0.2s ease;
    border: 1px solid transparent;
}

footer a:hover {
    color: #d9e9ff;
    background: rgba(143, 197, 255, 0.16);
    border-color: rgba(143, 197, 255, 0.25);
    box-shadow: 0 8px 18px rgba(143, 197, 255, 0.18);
}

/* Responsive Design */
@media (max-width: 768px) {
    nav {
        flex-direction: column;
        gap: 1rem;
    }

    .nav-links {
        flex-direction: column;
        gap: 1rem;
        width: 100%;
        text-align: center;
    }

    .lang-switcher {
        justify-content: center;
        width: 100%;
    }

    .hero {
        padding: 2rem 1rem;
    }

    main {
        padding: 2rem 1rem;
    }

    .card {
        padding: 1.5rem;
    }

    .content-image {
        max-width: 100%;
    }
}

@media (max-width: 480px) {
    body {
        font-size: 14px;
    }

    .hero h1 {
        font-size: 1.75rem;
    }

    .content-section h2 {
        font-size: 1.5rem;
    }

    .content-section h3 {
        font-size: 1.25rem;
    }
}

/* Utility Classes */
.text-center {
    text-align: center;
}

.mt-2 {
    margin-top: 2rem;
}

.mb-2 {
    margin-bottom: 2rem;
}

.highlight {
    color: var(--highlight-color);
    font-weight: 600;
}

/* Smooth Scroll */
html {
    scroll-behavior: smooth;
}