:root {
    /* Premium Dark Mode Palette */
    --color-bg: #0b0f19;
    /* Very dark blue/black */
    --color-surface: #111827;
    /* Slightly lighter for cards */
    --color-primary: #3b82f6;
    /* Bright Blue Accent */
    --color-accent: #60a5fa;
    /* Lighter Blue */
    --color-text-main: #f1f5f9;
    /* Off-white text */
    --color-text-muted: #94a3b8;
    /* Muted text */
    --color-border: #1e293b;
    /* Dark border */

    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.5);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.5), 0 2px 4px -2px rgb(0 0 0 / 0.5);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.7), 0 4px 6px -4px rgb(0 0 0 / 0.7);

    --font-sans: 'Outfit', system-ui, -apple-system, sans-serif;
    --radius-lg: 1rem;
    --radius-full: 9999px;

    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: var(--font-sans);
    background-color: var(--color-bg);
    color: var(--color-text-main);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* Header */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(11, 15, 25, 0.7);
    /* Dark semi-transparent */
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    z-index: 50;
    padding: 1rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s ease;
}

header.scrolled {
    padding: 0.75rem 1.5rem;
    background: rgba(11, 15, 25, 0.9);
    box-shadow: var(--shadow-sm);
}

.brand {
    font-weight: 700;
    font-size: 1.25rem;
    letter-spacing: -0.025em;
    color: white;
}

.lang {
    display: flex;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.05);
    padding: 4px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
}

.lang button {
    border: none;
    background: transparent;
    padding: 0.4rem 0.8rem;
    border-radius: 0.75rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-muted);
    cursor: pointer;
    transition: var(--transition);
}

.lang button.active {
    background: var(--color-primary);
    color: white;
    box-shadow: var(--shadow-sm);
}

/* Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
    padding-top: 6rem;
    /* Header offset */
}

/* Full Screen Hero */
.hero {
    position: relative;
    display: flex;
    align-items: center;
    min-height: 100vh;
    /* Full viewport height */
    margin-bottom: 4rem;
    margin-top: -80px;
    /* Counteract header padding to go full top */
    padding-top: 80px;
    overflow: hidden;
    border-radius: 0 0 2rem 2rem;
}

.hero-visual {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.hero-visual::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(to right, #0b0f19 0%, rgba(11, 15, 25, 0.8) 40%, transparent 100%);
    z-index: 2;
}

.hero-visual img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 10s ease;
    /* Slow zoom effect */
}

.hero:hover .hero-visual img {
    transform: scale(1.05);
}

.hero-content {
    position: relative;
    z-index: 10;
    max-width: 600px;
    padding: 2rem;
}

.hero-content h1 {
    font-size: 4rem;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 1.5rem;
    color: white;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.hero-content p {
    font-size: 1.25rem;
    color: #cbd5e1;
    /* Lighter text for contrast on dark */
    margin-bottom: 2rem;
    max-width: 90%;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}

.badges {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 2.5rem;
}

.badge {
    background: rgba(59, 130, 246, 0.2);
    color: #60a5fa;
    border: 1px solid rgba(59, 130, 246, 0.4);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.01em;
}

/* Buttons */
.cta-group {
    display: flex;
    gap: 1rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 1.75rem;
    border-radius: var(--radius-lg);
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: 1px solid transparent;
}

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

.btn-primary:hover {
    background: #2563eb;
    transform: translateY(-2px);
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.5);
    /* Glow effect */
}

.btn-outline {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(4px);
    border-color: rgba(255, 255, 255, 0.2);
    color: white;
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: white;
}

/* Sections */
section {
    margin-bottom: 6rem;
}

.section-title {
    font-size: 2rem;
    margin-bottom: 2rem;
    letter-spacing: -0.02em;
}

/* Cards Grid */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 1.5rem;
    padding: 2rem;
    transition: var(--transition);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.2);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary);
    /* Glow border on hover */
}

.card h3 {
    font-size: 1.25rem;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--color-text-main);
}

.card ul {
    list-style: none;
}

.card li {
    margin-bottom: 0.75rem;
    color: var(--color-text-muted);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.card li::before {
    content: "✓";
    color: var(--color-primary);
    font-weight: 800;
}

/* Footer */
footer {
    text-align: center;
    padding: 3rem;
    border-top: 1px solid var(--color-border);
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

/* Mobile */
@media (max-width: 900px) {
    .hero {
        display: flex;
        flex-direction: column;
        gap: 2rem;
        text-align: center;
        padding-top: 100px;
        margin-top: 0;
        height: auto;
        min-height: auto;
    }

    .hero-visual {
        order: -1;
        position: static;
        /* Stack normally on mobile */
        height: 50vh;
        border-radius: 2rem;
    }

    .hero-visual::after {
        display: none;
        /* No gradient overlay on mobile stack */
    }

    .hero-content {
        max-width: 100%;
        padding: 0;
    }

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

    .hero-content p {
        margin: 0 auto 2rem;
    }

    .badges,
    .cta-group {
        justify-content: center;
    }
}

/* Gallery */
.gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-bottom: 6rem;
}

.gallery img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    border-radius: 1rem;
    transition: transform 0.4s ease, box-shadow 0.4s ease;
    cursor: pointer;
    border: 1px solid var(--color-border);
    background: #1e293b;
    /* Placeholder color before load */
}

.gallery img:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-lg);
    z-index: 10;
    border-color: var(--color-primary);
}

@media (max-width: 600px) {
    .gallery {
        grid-template-columns: 1fr;
    }
}

/* Lightbox */
.lightbox {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.95);
    z-index: 100;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.lightbox.active {
    opacity: 1;
    pointer-events: auto;
}

.lightbox img {
    max-width: 90%;
    max-height: 80vh;
    border-radius: 8px;
    box-shadow: 0 0 50px rgba(0, 0, 0, 0.5);
}

.lightbox-close {
    position: absolute;
    top: 2rem;
    right: 2rem;
    color: white;
    font-size: 2rem;
    cursor: pointer;
    background: transparent;
    border: none;
}

.lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    color: white;
    font-size: 3rem;
    cursor: pointer;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: 50%;
    width: 60px;
    height: 60px;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: background 0.3s;
}

.lightbox-nav:hover {
    background: rgba(255, 255, 255, 0.3);
}

.lightbox-ant {
    left: 2rem;
}

.lightbox-next {
    right: 2rem;
}