@import url('https://fonts.googleapis.com/css2?family=Inter:opsz,wght@14..32,300;14..32,400;14..32,500;14..32,600;14..32,700&display=swap');

:root {
    --primary: #ff7b2c;
    --primary-dark: #e05a00;
    --dark: #1e2a3a;
    --gray-bg: #f4f7fc;
    --card-bg: #ffffff;
    --text-dark: #1f2a3e;
    --text-muted: #5a6874;
    --border-light: #e9ecef;
    --shadow-sm: 0 8px 20px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 12px 28px rgba(0, 0, 0, 0.08);
    --transition: all 0.25s ease;
}

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

body {
    font-family: 'Inter', sans-serif;
    background: var(--gray-bg);
    color: var(--text-dark);
    line-height: 1.5;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Навигация */
nav {
    background: var(--dark);
    padding: 12px 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}
.logo {
    font-size: 1.6rem;
    font-weight: 700;
    color: white;
    letter-spacing: -0.5px;
}
.nav-links {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    align-items: center;
}
.nav-links a, .nav-links span {
    color: white;
    text-decoration: none;
    padding: 8px 16px;
    border-radius: 40px;
    font-weight: 500;
    transition: var(--transition);
}
.nav-links a:hover {
    background: var(--primary);
    transform: translateY(-2px);
}
.nav-links span {
    background: rgba(255,255,255,0.1);
}

/* Контейнер */
.container {
    max-width: 1300px;
    margin: 32px auto;
    background: var(--card-bg);
    padding: 32px;
    border-radius: 32px;
    box-shadow: var(--shadow-sm);
    width: 92%;
}

h1 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 24px;
    text-align: center;
    color: var(--dark);
}
h1::after {
    content: '';
    display: block;
    width: 70px;
    height: 4px;
    background: var(--primary);
    margin: 16px auto 0;
    border-radius: 4px;
}
h2 { font-size: 28px; font-weight: 600; margin: 20px 0 16px; color: var(--dark); }
h3 { font-size: 22px; font-weight: 600; }

/* Герой (главная) */
.hero {
    background: linear-gradient(135deg, #1e2a3a 0%, #2c3e50 100%);
    color: white;
    text-align: center;
    padding: 60px 20px;
    margin: 0 0 40px 0;
    border-radius: 0 0 48px 48px;
}
.hero h1 {
    font-size: 48px;
    color: white;
    margin-bottom: 16px;
}
.hero p {
    font-size: 18px;
    margin-bottom: 28px;
}
.btn-primary {
    background: var(--primary);
    padding: 12px 32px;
    border-radius: 40px;
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition);
}
.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(224,90,0,0.3);
}

/* Карточки преимуществ */
.features {
    display: flex;
    flex-wrap: wrap;
    gap: 24px;
    justify-content: center;
    margin-top: 32px;
}
.feature-card {
    background: var(--gray-bg);
    padding: 20px 24px;
    border-radius: 24px;
    font-weight: 500;
    text-align: center;
    flex: 1;
    min-width: 180px;
    transition: var(--transition);
}
.feature-card:hover {
    transform: translateY(-5px);
    background: var(--primary);
    color: white;
}

/* Формы */
form {
    max-width: 500px;
    margin: 0 auto;
    background: var(--gray-bg);
    padding: 28px;
    border-radius: 28px;
}
input, textarea, select {
    width: 100%;
    padding: 12px 16px;
    margin: 8px 0 16px;
    border: 1.5px solid var(--border-light);
    border-radius: 20px;
    font-family: inherit;
    font-size: 1rem;
}
input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(255,123,44,0.2);
}
button, .btn-order {
    background: var(--primary);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 40px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    width: 100%;
}
button:hover, .btn-order:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}
.message {
    padding: 14px 20px;
    border-radius: 24px;
    margin-bottom: 20px;
}
.success { background: #e0f2e9; color: #1e6f3f; border-left: 5px solid #2b9348; }
.error { background: #ffe6e5; color: #b91c1c; border-left: 5px solid #e03a3a; }

/* Каталог курсов */
.products {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 28px;
}
.product-card {
    background: var(--card-bg);
    border-radius: 24px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--border-light);
}
.product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-md);
}
.product-card img {
    width: 100%;
    height: 180px;
    object-fit: cover;
}
.product-card h3 {
    padding: 20px 20px 8px;
}
.price {
    font-size: 26px;
    font-weight: 700;
    color: var(--primary);
    padding: 0 20px;
}
.product-card p {
    padding: 12px 20px 20px;
    color: var(--text-muted);
}
.btn-order {
    display: inline-block;
    width: auto;
    margin: 0 20px 20px 20px;
    text-align: center;
    text-decoration: none;
}

/* Личный кабинет и админка */
.app-card, .admin-card {
    background: var(--gray-bg);
    padding: 20px;
    border-radius: 24px;
    margin: 16px 0;
    border-left: 6px solid var(--primary);
    transition: var(--transition);
}
.app-card:hover, .admin-card:hover {
    transform: translateX(5px);
}
.status-Новая { color: #f4a261; font-weight: 600; }
.status-Идётобучение { color: #2a9d8f; font-weight: 600; }
.status-Обучениезавершено { color: #2b9348; font-weight: 600; }

/* Слайдер */
.slider-container {
    position: relative;
    max-width: 600px;
    margin: 24px auto;
    border-radius: 28px;
    overflow: hidden;
}
.slides img {
    width: 100%;
    display: none;
    border-radius: 28px;
}
.slider-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0,0,0,0.5);
    color: white;
    width: 44px;
    height: 44px;
    border-radius: 60px;
    border: none;
    cursor: pointer;
    font-size: 24px;
    transition: var(--transition);
}
.slider-btn:hover {
    background: var(--primary);
}
.prev { left: 16px; }
.next { right: 16px; }

/* Пагинация */
.pagination {
    margin-top: 32px;
    display: flex;
    justify-content: center;
    gap: 8px;
}
.pagination a {
    background: var(--border-light);
    padding: 8px 14px;
    border-radius: 40px;
    text-decoration: none;
    color: var(--dark);
    transition: var(--transition);
}
.pagination a:hover {
    background: var(--primary);
    color: white;
}

/* Футер */
footer {
    background: var(--dark);
    color: #cddae9;
    text-align: center;
    padding: 24px;
    margin-top: auto;
}
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.15);
    padding-top: 16px;
}

/* Адаптивность (390px и выше) */
@media (max-width: 768px) {
    nav { flex-direction: column; align-items: stretch; text-align: center; }
    .nav-links { justify-content: center; }
    .container { padding: 20px; width: 95%; }
    h1 { font-size: 28px; }
    .hero h1 { font-size: 36px; }
    .products { grid-template-columns: 1fr; }
    .slider-container { max-width: 100%; }
    .admin-filters form { display: flex; flex-direction: column; gap: 10px; }
}
@media (max-width: 480px) {
    h1 { font-size: 26px; }
    .price { font-size: 22px; }
    button, .btn-order { padding: 10px 16px; }
    .slider-btn { width: 36px; height: 36px; font-size: 18px; }
}