/* ==================== VARIABLES & GLOBAL ==================== */

:root {
    /* COLORS */
    --immersio-purple: #8b5cf6;
    --immersio-purple-dark: #7c3aed;
    --immersio-purple-light: #a78bfa;
    --dark-bg: #0f0d1c;
    --dark-card: #1a1925;
    --dark-border: #2d2642;
    --text-light: #ffffff; /* Blanc pur pour meilleure lisibilité */
    --text-muted: #9ca3af;
    
    /* SPACING */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* BORDER RADIUS */
    --border-radius-sm: 6px;
    --border-radius-md: 12px;
    --border-radius-lg: 16px;
    --border-radius-xl: 24px;
    
    /* TRANSITIONS */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 300ms ease-in-out;
    --transition-slow: 500ms ease-in-out;
    
    /* SHADOWS */
    --shadow-sm: 0 1px 2px 0 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, 0.2);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.3);
}

/* ===== BASE STYLES ===== */
html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    background: linear-gradient(135deg, #0f0d1c 0%, #1a1925 100%);
    color: var(--text-light);
    font-family: 'Rajdhani', 'Audiowide', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    line-height: 1.6;
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: #fff;
}

h1 {
    font-size: clamp(2rem, 5vw, 4rem);
    margin-bottom: var(--spacing-lg);
}

h2 {
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    margin-bottom: var(--spacing-md);
}

h3 {
    font-size: clamp(1.2rem, 3vw, 1.8rem);
    margin-bottom: var(--spacing-sm);
}

p {
    color: var(--text-light);
    margin-bottom: var(--spacing-md);
}

a {
    color: var(--immersio-purple-light);
    transition: color var(--transition-base);
}

a:hover {
    color: #fff;
}

/* ===== CONTAINERS ===== */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.section-wrap {
    width: min(100% - 30px, 1200px);
    margin: 0 auto;
    padding-block: clamp(60px, 8vw, 120px);
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 24px;
    border-radius: var(--border-radius-md);
    font-weight: 700;
    font-size: 0.95rem;
    transition: all var(--transition-base);
    cursor: pointer;
    border: none;
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--immersio-purple), var(--immersio-purple-dark));
    color: white;
    border: 1px solid var(--immersio-purple-light);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--immersio-purple-dark), var(--immersio-purple));
    box-shadow: 0 0 30px rgba(139, 92, 246, 0.5);
    transform: translateY(-2px);
}

.btn-secondary {
    background: rgba(139, 92, 246, 0.2);
    color: var(--immersio-purple-light);
    border: 1px solid rgba(167, 139, 250, 0.4);
}

.btn-secondary:hover {
    background: rgba(139, 92, 246, 0.3);
    border-color: rgba(167, 139, 250, 0.8);
    color: #fff;
}

/* ===== UTILITIES ===== */
.text-center {
    text-align: center;
}

.text-muted {
    color: var(--text-muted);
}

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }

.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }

.gap-1 { gap: var(--spacing-sm); }
.gap-2 { gap: var(--spacing-md); }
.gap-3 { gap: var(--spacing-lg); }