/**
 * ==============================================================================
 * DESIGN SYSTEM & VARIABLES
 * ==============================================================================
 * Thème sombre immersif ("Gaming Neon")
 */
:root {
    /* Colors */
    --bg-dark: #050505;
    --bg-darker: #020202;
    --bg-card: rgba(20, 20, 25, 0.6);

    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;

    --neon-cyan: #00f0ff;
    --neon-purple: #b026ff;
    --neon-magenta: #ff007b;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
    --gradient-hover: linear-gradient(135deg, var(--neon-purple), var(--neon-magenta));

    /* UI Elements */
    --border-color: rgba(255, 255, 255, 0.08);
    --border-glow: rgba(0, 240, 255, 0.3);
    --blur-intensity: blur(12px);

    /* Layout */
    --nav-height: 80px;
    --container-width: 1200px;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-smooth: 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

/**
 * ==============================================================================
 * RESET & BASE
 * ==============================================================================
 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', 'Outfit', system-ui, sans-serif;
}

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Background ambient glows */
body::before,
body::after {
    content: '';
    position: fixed;
    width: 50vw;
    height: 50vw;
    border-radius: 50%;
    z-index: -1;
    filter: blur(120px);
    opacity: 0.15;
    animation: drift 25s ease-in-out infinite alternate;
    pointer-events: none;
}

body::before {
    top: -10%;
    left: -10%;
    background: var(--neon-cyan);
}

body::after {
    bottom: -10%;
    right: -10%;
    background: var(--neon-purple);
    animation-delay: -12s;
}

@keyframes drift {
    0% {
        transform: translate(0, 0) scale(1);
    }

    100% {
        transform: translate(5%, 5%) scale(1.2);
    }
}

/**
 * ==============================================================================
 * TYPOGRAPHY
 * ==============================================================================
 */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1rem;
}

.text-gradient {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

.subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin-bottom: 2rem;
    font-weight: 300;
}

.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 2rem;
}

.section {
    padding: 6rem 0;
    position: relative;
}

/**
 * ==============================================================================
 * NAVBAR (STICKY + GLASSMORPHISM)
 * ==============================================================================
 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--nav-height);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 4rem;
    z-index: 1000;
    transition: var(--transition-smooth);
    background: transparent;
    border-bottom: 1px solid transparent;
}

.navbar.scrolled {
    background: rgba(5, 5, 5, 0.85);
    backdrop-filter: var(--blur-intensity);
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.logo-container img {
    height: 45px;
    width: auto;
    object-fit: contain;
    transition: var(--transition-smooth);
}

.logo-container img:hover {
    transform: scale(1.05);
    filter: drop-shadow(0 0 10px var(--neon-cyan));
}

.nav-links {
    display: flex;
    gap: 2.5rem;
    align-items: center;
}

.nav-link {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    position: relative;
    padding: 0.5rem 0;
    transition: var(--transition-fast);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--neon-cyan);
    transition: width 0.3s ease;
    box-shadow: 0 0 10px var(--neon-cyan);
}

.nav-link:hover,
.nav-link.active {
    color: var(--neon-cyan);
}

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

select.lang-selector {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    cursor: pointer;
    outline: none;
    font-weight: 600;
    backdrop-filter: blur(5px);
    transition: var(--transition-fast);
}

select.lang-selector:hover {
    border-color: var(--neon-cyan);
}

select.lang-selector option {
    background: var(--bg-darker);
    color: var(--text-primary);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 2rem;
    cursor: pointer;
}

/**
 * ==============================================================================
 * BUTTONS & CTA
 * ==============================================================================
 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2.5rem;
    border-radius: 8px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition-smooth);
    border: none;
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 5px 20px rgba(0, 240, 255, 0.3);
}

.btn-primary:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-hover);
    z-index: -1;
    transition: opacity 0.4s ease;
    opacity: 0;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(176, 38, 255, 0.5);
}

.btn-primary:hover:before {
    opacity: 1;
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--border-color);
    backdrop-filter: blur(5px);
}

.btn-outline:hover {
    border-color: var(--neon-cyan);
    color: var(--neon-cyan);
    transform: translateY(-3px);
    box-shadow: 0 5px 20px rgba(0, 240, 255, 0.15);
}

/**
 * ==============================================================================
 * CARDS (GLASSMORPHISM)
 * ==============================================================================
 */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2.5rem;
    backdrop-filter: var(--blur-intensity);
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
    height: 100%;
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

.card:hover {
    transform: translateY(-10px);
    border-color: rgba(255, 255, 255, 0.15);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
}

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

.card-img-wrapper {
    width: 100%;
    height: 200px;
    border-radius: 8px;
    overflow: hidden;
    margin-bottom: 1.5rem;
    background: #111;
}

.card-img-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.card:hover .card-img-wrapper img {
    transform: scale(1.1);
}

.card-title {
    font-size: 1.5rem;
    color: white;
    margin-bottom: 1rem;
}

.card-text {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    flex-grow: 1;
}

/**
 * ==============================================================================
 * SCROLL ANIMATIONS (Intersection Observer)
 * ==============================================================================
 */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

.delay-1 {
    transition-delay: 0.1s;
}

.delay-2 {
    transition-delay: 0.2s;
}

.delay-3 {
    transition-delay: 0.3s;
}

.delay-4 {
    transition-delay: 0.4s;
}

/**
 * ==============================================================================
 * SPECIFIC SECTIONS & PAGES
 * ==============================================================================
 */

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    padding-top: var(--nav-height);
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center, rgba(0, 240, 255, 0.1) 0%, rgba(5, 5, 5, 1) 70%);
    z-index: -1;
}

.hero-title {
    font-size: clamp(3rem, 6vw, 6rem);
    letter-spacing: -2px;
    margin-bottom: 1.5rem;
    text-shadow: 0 10px 30px rgba(0, 0, 0, 0.8);
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    margin-top: 3rem;
}

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

.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2.5rem;
}

/* Page Headers */
.page-header {
    padding: 12rem 0 6rem;
    text-align: center;
    background: linear-gradient(to bottom, rgba(5, 5, 5, 0) 0%, rgba(5, 5, 5, 1) 100%);
}

.page-title {
    font-size: 4rem;
    margin-bottom: 1rem;
}

/* Forms */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    font-weight: 600;
}

.form-control {
    width: 100%;
    padding: 1rem 1.5rem;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: white;
    font-size: 1rem;
    transition: var(--transition-fast);
    outline: none;
}

.form-control:focus {
    border-color: var(--neon-cyan);
    box-shadow: 0 0 15px rgba(0, 240, 255, 0.1);
    background: rgba(255, 255, 255, 0.06);
}

textarea.form-control {
    min-height: 150px;
    resize: vertical;
}

/* Footer */
.footer {
    background: rgba(2, 2, 2, 0.9);
    border-top: 1px solid var(--border-color);
    padding: 6rem 0 2rem;
    margin-top: auto;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 4rem;
    margin-bottom: 4rem;
}

.footer-brand p {
    color: var(--text-secondary);
    margin-top: 1.5rem;
}

.footer-title {
    font-size: 1.2rem;
    color: white;
    margin-bottom: 1.5rem;
}

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

.footer-links li {
    margin-bottom: 1rem;
}

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

.footer-links a:hover {
    color: var(--neon-cyan);
    padding-left: 5px;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/**
 * ==============================================================================
 * SCROLLBAR
 * ==============================================================================
 */
::-webkit-scrollbar {
    width: 12px;
}

::-webkit-scrollbar-track {
    background: var(--bg-darker);
    border-left: 1px solid var(--border-color);
}

::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 6px;
    border: 3px solid var(--bg-darker);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--neon-cyan);
}


/**
 * ==============================================================================
 * RESPONSIVE
 * ==============================================================================
 */
@media (max-width: 992px) {
    .grid-2 {
        grid-template-columns: 1fr;
    }

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

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

@media (max-width: 768px) {
    .navbar {
        padding: 0 1.5rem;
        height: 70px;
    }

    .nav-links {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: rgba(5, 5, 5, 0.95);
        backdrop-filter: blur(20px);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        transition: 0.4s ease;
    }

    .nav-links.nav-active {
        left: 0;
    }

    .mobile-menu-btn {
        display: block;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .section {
        padding: 4rem 0;
    }
}