/* Styles CSS pour SONAR-PROJECT */

/* Variables CSS */
:root {
    --primary-nc: #002395;
    --secondary-nc: #ED2939;
    --accent-sonar: #6f42c1;
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.3);
    --dark-sonar: #1a1a2e;
    --light-sonar: #f0f2f5;
    --text-main: #2d3436;
    --shadow-soft: 0 8px 32px 0 rgba(31, 38, 135, 0.15);
}

body {
    background: var(--light-sonar);
    background-image: 
        radial-gradient(at 0% 0%, rgba(0, 35, 149, 0.05) 0, transparent 50%),
        radial-gradient(at 50% 0%, rgba(237, 41, 57, 0.05) 0, transparent 50%);
    font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
    color: var(--text-main);
    min-height: 100vh;
}

/* Glassmorphism Components */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    box-shadow: var(--shadow-soft);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.glass-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px 0 rgba(31, 38, 135, 0.25);
}

/* Hero Section Modernisée */
.hero-sonar {
    background: linear-gradient(135deg, var(--primary-nc) 0%, #00155a 100%);
    color: white;
    padding: 100px 0 120px;
    position: relative;
    overflow: hidden;
    clip-path: ellipse(150% 100% at 50% 0%);
}

.hero-sonar::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 8px;
    background: var(--secondary-nc);
}

/* Navigation Spéciale */
.nav-sonar {
    margin-top: -50px;
    position: relative;
    z-index: 100;
}

.nav-link-sonar {
    background: white;
    color: var(--primary-nc);
    padding: 15px 25px;
    border-radius: 12px;
    font-weight: 700;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
    box-shadow: var(--shadow-soft);
    transition: 0.3s;
}

.nav-link-sonar:hover, .nav-link-sonar.active {
    background: var(--primary-nc);
    color: white;
    transform: scale(1.05);
}

/* Badges & Pills */
.badge-sonar {
    padding: 6px 16px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Stats */
.stat-value {
    font-size: 2.5rem;
    font-weight: 800;
    background: linear-gradient(45deg, var(--primary-nc), var(--accent-sonar));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Animations */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.animate-fade-in {
    animation: fadeInUp 0.6s ease-out forwards;
}

/* Layouts Spécifiques */
.grid-sonar {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    margin-top: 40px;
}

/* Footer */
footer {
    margin-top: 80px;
    padding: 40px 0;
    background: white;
    border-top: 1px solid #eee;
}