/* ===========================================
   BITVEST - STYLE.CSS COMPLET
   =========================================== */

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background: #f8f9fa;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ===========================================
   HERO SECTIONS
   =========================================== */
.hero-section {
    text-align: center;
    padding: 60px 20px;
    background: linear-gradient(135deg, #1e3a8a 0%, #1e40af 50%, #1d4ed8 100%);
    color: white;
    border-radius: 20px;
    margin-bottom: 40px;
    box-shadow: 0 20px 40px rgba(30, 58, 138, 0.3);
}

.hero-section h1 {
    font-size: 42px;
    font-weight: 800;
    margin-bottom: 15px;
    text-shadow: 0 4px 12px rgba(0,0,0,0.3);
}

.hero-section p {
    font-size: 20px;
    opacity: 0.95;
}

/* ===========================================
   CONTENT SECTIONS
   =========================================== */
.content-section {
    background: white;
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.1);
    margin-bottom: 40px;
}

.section-title {
    font-size: 32px;
    font-weight: 700;
    color: #1e40af;
    margin-bottom: 30px;
    text-align: center;
}

/* ===========================================
   GRIDS FEATURES
   =========================================== */
.features-grid, .activities-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin: 40px 0;
}

.feature-card, .activity-card {
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    padding: 30px;
    border-radius: 20px;
    text-align: center;
    transition: all 0.4s ease;
    border: 1px solid rgba(102, 126, 234, 0.1);
}

.feature-card:hover, .activity-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 25px 50px rgba(102, 126, 234, 0.2);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.feature-card h3, .activity-card h3 {
    font-size: 22px;
    margin: 20px 0 15px;
    color: #1e40af;
}

.feature-card:hover h3, .activity-card:hover h3 {
    color: white;
}

/* ===========================================
   BENEFITS GRID
   =========================================== */
.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
    margin: 40px 0;
}

.benefit-item {
    background: linear-gradient(135deg, #10b981, #059669);
    color: white;
    padding: 25px;
    border-radius: 15px;
    font-size: 18px;
    font-weight: 600;
    text-align: center;
    box-shadow: 0 15px 35px rgba(16, 185, 129, 0.3);
}

/* ===========================================
   LOOP SIMULATION
   =========================================== */
.loop-simulation {
    animation: fadeInUp 0.8s ease-out;
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

.loop-simulation:hover {
    transform: translateY(-5px);
    box-shadow: 0 25px 50px rgba(245, 158, 11, 0.4);
}

/* ===========================================
   CARDS & BUTTONS
   =========================================== */
.whatsapp-content {
    background: #f8f9fa;
    padding: 40px;
    border-radius: 20px;
    margin: 20px 0;
}

.whatsapp-content h3 {
    color: #1e40af;
    font-size: 24px;
    margin: 30px 0 20px;
    font-weight: 700;
}

.whatsapp-content ul {
    list-style: none;
    padding-left: 0;
}

.whatsapp-content li {
    padding: 12px 0;
    font-size: 16px;
    position: relative;
    padding-left: 40px;
}

.whatsapp-content li:before {
    content: "✅";
    position: absolute;
    left: 0;
    font-size: 18px;
    top: 12px;
}

.btn {
    display: inline-block;
    padding: 14px 28px;
    background: linear-gradient(135deg, #1e40af, #1d4ed8);
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    transition: all 0.3s;
    box-shadow: 0 8px 25px rgba(30, 64, 175, 0.3);
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 35px rgba(30, 64, 175, 0.4);
}

/* ===========================================
   TYPOGRAPHIE
   =========================================== */
h1 { font-size: 48px; font-weight: 800; line-height: 1.2; }
h2 { font-size: 32px; font-weight: 700; margin-bottom: 20px; }
h3 { font-size: 24px; font-weight: 700; margin-bottom: 15px; }

p { font-size: 16px; margin-bottom: 20px; }

strong { color: #1e40af; }
em { font-style: italic; color: #666; }

/* ===========================================
   RESPONSIVE
   =========================================== */
@media (max-width: 768px) {
    .hero-section h1 { font-size: 32px; }
    .content-section { padding: 25px 20px; }
    .features-grid, .activities-grid { grid-template-columns: 1fr; }
    .whatsapp-content { padding: 25px 20px; }
    
    .loop-simulation { padding: 20px; }
    
    .hero-section { padding: 40px 20px; }
}

@media (max-width: 480px) {
    .container { padding: 0 15px; }
    h1 { font-size: 28px; }
    .section-title { font-size: 26px; }
}

/* ===========================================
   UTILS
   =========================================== */
.text-center { text-align: center; }
.mb-4 { margin-bottom: 1.5rem; }
.mb-5 { margin-bottom: 3rem; }

/* Scrollbar custom */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: #f1f1f1;
}
::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 4px;
}