/* ============================================================
   БАЗОВЫЕ СТИЛИ НОВОГО САЙТА
   ============================================================ */

html { scroll-behavior: smooth; }

body {
    background: #f5f7fb;
    font-family: 'Segoe UI', Tahoma, sans-serif;
    color: #1a1d29;
}

/* ===== Navbar ===== */
.navbar {
    background: rgba(255, 255, 255, 0.97) !important;
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.06);
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
    background: linear-gradient(135deg, #667eea, #764ba2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.navbar .nav-link {
    color: #555 !important;
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    border-radius: 8px;
    transition: all 0.3s ease;
    margin: 0 2px;
}

.navbar .nav-link:hover,
.navbar .nav-link.active {
    color: #fff !important;
    background: linear-gradient(135deg, #667eea, #764ba2);
}

.navbar .nav-link.active-parent {
    color: #667eea !important;
    background: rgba(102, 126, 234, 0.1);
}

.dropdown-menu {
    border: none;
    border-radius: 12px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
    padding: 8px;
    margin-top: 8px;
}

.dropdown-item {
    border-radius: 8px;
    padding: 10px 14px;
    color: #555;
    font-weight: 500;
    transition: all 0.2s ease;
}

.dropdown-item:hover,
.dropdown-item.active {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: #fff !important;
}

/* ===== Заголовки ===== */
.section-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

/* ===== Карточка-контейнер ===== */
.calc-box {
    background: #fff;
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.08);
}

/* ===== Формы ===== */
.form-control, .form-select {
    border-radius: 10px;
    padding: 12px 16px;
    border: 2px solid #e5e7eb;
}

.form-control:focus, .form-select:focus {
    border-color: #667eea;
    box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.15);
}

/* ===== Кнопки ===== */
.btn-primary {
    background: linear-gradient(135deg, #667eea, #764ba2);
    border: none;
    padding: 12px 40px;
    border-radius: 50px;
    font-weight: 600;
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.4);
    transition: all 0.3s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 35px rgba(102, 126, 234, 0.6);
    background: linear-gradient(135deg, #667eea, #764ba2);
}

.btn-outline-primary {
    border: 2px solid #667eea;
    color: #667eea;
    padding: 12px 40px;
    border-radius: 50px;
    font-weight: 600;
    background: transparent;
    transition: all 0.3s ease;
}

.btn-outline-primary:hover {
    background: #667eea;
    color: #fff;
}

/* ===== Footer ===== */
footer {
    background: #1a1d29;
    color: rgba(255, 255, 255, 0.7);
    padding: 20px 0;
    margin-top: 40px;
}