@charset "UTF-8";

/* ==========================================
   1. ПЕРЕМЕННЫЕ И БАЗОВЫЕ НАСТРОЙКИ
   ========================================== */
:root {
    --primary: #257f85;        /* Технологичный синий 0052cc заменен*/
    --primary-hover: #0041a3;  /* Темный синий при наведении */
    --accent: #00b4d8;         /* Голубой акцент (чистая вода) */
    --dark: #1e293b;           /* Глубокий графит для текста и футера */
    --light-bg: #f8fafc;       /* Холодный стальной белый фон сайта */
    --card-bg: #ffffff;        /* Белый фон карточек */
    --border: #e2e8f0;          /* Тонкие стильные границы */
    --text-muted: #64748b;     /* Приглушенный текст */
}

body { 
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    line-height: 1.6; 
    color: var(--dark); 
    margin: 0; 
    padding: 0; 
    background: var(--light-bg); 
    -webkit-font-smoothing: antialiased;
}

a { color: var(--primary); text-decoration: none; transition: color 0.2s ease; }
a:hover { color: var(--primary-hover); text-decoration: none; }

.container { 
    max-width: 1280px; 
    margin: 0 auto; 
    background: var(--card-bg); 
    padding: 40px; 
    border-radius: 12px; 
    box-shadow: 0 4px 20px rgba(30, 41, 59, 0.03); 
    box-sizing: border-box;
}
.container-cart { max-width: 900px; }

/* ==========================================
   2. ТЕХНОЛОГИЧНАЯ ШАПКА (Header)
   ========================================== */
.site-header { 
    background: var(--dark); 
    color: #fff; 
    padding: 8px 20px 4px; 
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}
.header-container { 
    max-width: 1240px; 
    margin: 0 auto; 
    display: flex; 
    justify-content: space-between; 
    align-items: center; 
    flex-wrap: wrap; 
    gap: 20px;
}
.logo a { 
    color: #fff; 
    font-size: 1px; 
    font-weight: 800; 
    letter-spacing: 1.5px; 
    text-transform: uppercase;
}
.logo span { color: var(--accent); }
.main-nav { display: flex; gap: 30px; }
.main-nav a { 
    color: #cbd5e1; 
    font-weight: 600; 
    font-size: 15px; 
    letter-spacing: 0.3px;
    padding: 5px 0;
    position: relative;
}
.main-nav a:hover, .main-nav a.active { color: #fff; }
.main-nav a::after {
    content: ''; position: absolute; bottom: 0; left: 0; width: 0; height: 2px;
    background: var(--accent); transition: width 0.2s ease;
}
.main-nav a:hover::after { width: 100%; }

.cart-link { 
    background: var(--primary); 
    padding: 1px 5px; 
    color: white !important; 
    border-radius: 6px; 
    font-weight: 700; 
    font-size: 14px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    box-shadow: 0 4px 12px rgba(0, 82, 204, 0.2);
    transition: background 0.2s, transform 0.1s;
}
.cart-link:hover { background: var(--primary-hover); transform: translateY(-1px); }

.main-content { min-height: 65vh; padding: 40px 20px; box-sizing: border-box; }

/* ==========================================
   3. СОВРЕМЕННЫЕ СЕТКИ И КАРТОЧКИ (Grid)
   ========================================== */
.category-list, .product-list, .article-list { 
    display: grid; 
    grid-template-columns: repeat(auto-fill, minmax(290px, 1fr)); 
    gap: 30px; 
    margin-top: 30px; 
}
.category-card, .product-card, .article-card { 
    border: 1px solid var(--border); 
    padding: 24px; 
    border-radius: 12px; 
    background: var(--card-bg); 
    display: flex;
    flex-direction: column;
    box-sizing: border-box; 
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.category-card:hover, .product-card:hover, .article-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 30px rgba(30, 41, 59, 0.08);
    border-color: var(--accent);
}
.category-card h3, .product-card h3, .article-card h3 { 
    font-size: 20px; font-weight: 700; margin: 0 0 12px 0; line-height: 1.3; 
}
.category-card p { color: var(--text-muted); font-size: 14px; margin: 0; flex-grow: 1; }

.product-card .price { 
    font-weight: 800; color: var(--dark); font-size: 22px; margin: 20px 0 15px 0; 
}
.product-card .btn-order { width: 100%; }

/* ==========================================
   4. ТАБЛИЦЫ, КНОПКИ И ФОРМЫ (Корзина)
   ========================================== */
table { width: 100%; border-collapse: collapse; margin-bottom: 30px; }
th { background: var(--light-bg); color: var(--dark); font-weight: 700; padding: 16px; text-align: left; font-size: 14px; border-bottom: 2px solid var(--border); }
td { padding: 16px; border-bottom: 1px solid var(--border); font-size: 15px; }
.total { text-align: right; font-size: 24px; font-weight: 800; margin-bottom: 40px; color: var(--dark); }

.form-group { margin-bottom: 20px; }
.form-group label { display: block; margin-bottom: 8px; font-weight: 600; font-size: 14px; }
.form-group input { 
    width: 100%; padding: 14px; box-sizing: border-box; border: 1px solid var(--border); 
    border-radius: 6px; font-size: 16px; background: var(--light-bg); transition: border 0.2s; 
}
.form-group input:focus { border-color: var(--primary); outline: none; background: #fff; }

.btn { padding: 14px 28px; border: none; border-radius: 6px; cursor: pointer; display: inline-block; font-size: 15px; font-weight: 700; text-align: center; transition: all 0.2s; }
.btn-order { background: var(--primary); color: white; box-shadow: 0 4px 12px rgba(0, 82, 204, 0.15); }
.btn-order:hover { background: var(--primary-hover); }
.btn-clear { background: #fff; color: #ef4444; border: 1px solid #fee2e2; font-size: 13px; padding: 8px 16px; }
.btn-clear:hover { background: #fee2e2; }

/* ==========================================
   5. ИНДУСТРИАЛЬНЫЙ АДАПТИВНЫЙ ФУТЕР
   ========================================== */
.site-footer { background: var(--dark); color: #94a3b8; padding: 10px 20px; margin-top: 20px; font-size: 14px; border-top: 4px solid var(--primary); }
.footer-container { max-width: 1240px; margin: 0 auto; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 40px; }
.site-footer h3 { color: #fff; font-size: 18px; margin-top: 0; font-weight: 700; }
.site-footer p { margin: 8px 0; }

/* ==========================================
   6. МОБИЛЬНАЯ АДАПТАЦИЯ (Менее 768px)
   ========================================== */
@media (max-width: 768px) {
    .main-content { padding: 20px 10px; }
    .container { padding: 20px; border-radius: 0; }
    .header-container { text-align: center; gap: 15px; }
    .main-nav { gap: 15px; flex-wrap: wrap; justify-content: center; }
    .cart-link, .btn-order { width: 100%; display: block; box-sizing: border-box; }
    .footer-container { flex-direction: column; text-align: center; }
    
    /* Трансформация таблиц в карточки для телефонов */
    table, thead, tbody, th, td, tr { display: block; }
    thead tr { position: absolute; top: -9999px; left: -9999px; }
    tr { border: 1px solid var(--border); margin-bottom: 15px; padding: 10px; background: #fff; border-radius: 8px; }
    td { border: none; border-bottom: 1px solid var(--light-bg); position: relative; padding-left: 45%; text-align: right; }
    td:last-child { border-bottom: none; }
    td:before { position: absolute; left: 12px; width: 40%; text-align: left; font-weight: 700; color: var(--dark); }
    .container-cart td:nth-of-type(1):before { content: ""; }
    .container-cart td:nth-of-type(2):before { content: "Цена"; }
    .container-cart td:nth-of-type(3):before { content: "Количество"; }
    .container-cart td:nth-of-type(4):before { content: "Сумма"; }
    .total { text-align: center; font-size: 24px; }
}

@media (max-width: 768px) {
    .desktop-only {
        display: none !important;
    }
}

.cart-svg {
    fill: #cbd5e1;
    vertical-align: middle;
    margin-right: 6px;
}