:root {
    --primary: #2A6DF4;
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --success: #28a745;
    --dark: #343a40;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.6;
}

/* Навигация */
.navbar {
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
}

/* Hero секция */
.hero {
    padding: 80px 0;
    background: var(--primary-gradient);
    color: white;
}

.hero h1 {
    font-weight: 800;
    margin-bottom: 20px;
    font-size: 3rem;
}

.hero .lead {
    font-size: 1.25rem;
    margin-bottom: 30px;
    opacity: 0.95;
}

.hero .btn-primary {
    background: white;
    color: var(--primary);
    border: none;
    padding: 12px 40px;
    font-weight: 600;
    border-radius: 50px;
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
    transition: all 0.3s;
}

.hero .btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.3);
}

/* Карточки преимуществ */
.features {
    padding: 80px 0;
    background: #f8f9fa;
}

.feature-card {
    background: white;
    padding: 40px 30px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
    transition: all 0.3s;
    height: 100%;
    text-align: center;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
}

.feature-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--dark);
}

.feature-card p {
    color: #6c757d;
    margin-bottom: 0;
}

/* Модальное окно */
.modal-content {
    border-radius: 15px;
    border: none;
}

.modal-header {
    background: var(--primary-gradient);
    color: white;
    border-radius: 15px 15px 0 0;
    padding: 20px 30px;
}

.modal-header .btn-close {
    filter: brightness(0) invert(1);
    opacity: 0.8;
}

.modal-header .btn-close:hover {
    opacity: 1;
}

.modal-body {
    padding: 30px;
}

.modal-footer {
    padding: 20px 30px;
    border-top: 1px solid #dee2e6;
}

.form-control {
    border-radius: 8px;
    padding: 10px 15px;
    border: 1px solid #ced4da;
}

.form-control:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 0.2rem rgba(42,109,244,0.25);
}

.btn-primary {
    background: var(--primary-gradient);
    border: none;
    border-radius: 8px;
    padding: 10px 30px;
    font-weight: 600;
    transition: all 0.3s;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(102,126,234,0.4);
}

/* Страница успеха */
#successPage {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
}

.success-icon {
    font-size: 80px;
    color: var(--success);
    animation: bounce 1s;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {transform: translateY(0);}
    40% {transform: translateY(-30px);}
    60% {transform: translateY(-15px);}
}

/* Адаптивность */
@media (max-width: 768px) {
    .hero {
        padding: 40px 0;
        text-align: center;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero .btn-primary {
        padding: 10px 30px;
    }
}