/* Основная палитра и переменные темы */
:root {
    --primary-color: #2C3E50;     /* Доверительный графитово-стальной */
    --accent-color: #E67E22;      /* Мягкий янтарный для цветного металла */
    --accent-hover: #D35400;
    --light-bg: #F8F9FA;          /* Светлая подложка страниц */
    --dark-bg: #1A252F;           /* Насыщенный темный для футера */
    --text-main: #333333;
    --text-muted: #666666;
    --white: #FFFFFF;
    --font-stack: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font-stack);
    color: var(--text-main);
    line-height: 1.6;
    background-color: var(--white);
    padding-top: 80px; /* Исключает перекрытие контента фиксированным меню */
}

.container { width: 90%; max-width: 1200px; margin: 0 auto; }
h1, h2, h3 { font-weight: 700; color: var(--primary-color); }
.section-padding { padding: 80px 0; }
.section-title { text-align: center; font-size: 2.2rem; margin-bottom: 15px; }
.section-title.text-left { text-align: left; }
.section-subtitle { text-align: center; color: var(--text-muted); margin-bottom: 50px; max-width: 700px; margin-left: auto; margin-right: auto; }
.bg-light { background-color: var(--light-bg); }
.bg-dark { background-color: var(--dark-bg); }
.text-white { color: var(--white); }
.text-white h2, .text-white h3 { color: var(--white); }
.text-center { text-align: center; }

/* Элементы интерфейса и Кнопки */
.btn { display: inline-block; padding: 12px 28px; border-radius: 4px; font-weight: 600; text-decoration: none; cursor: pointer; transition: all 0.3s ease; border: none; text-align: center; }
.btn-primary { background-color: var(--accent-color); color: var(--white); }
.btn-primary:hover { background-color: var(--accent-hover); }
.btn-secondary { background-color: transparent; color: var(--white); border: 2px solid var(--white); }
.btn-secondary:hover { background-color: var(--white); color: var(--primary-color); }
.btn-small { padding: 8px 16px; font-size: 0.9rem; background-color: var(--primary-color); color: var(--white); }
.btn-small:hover { background-color: var(--accent-color); }
.btn-table { padding: 6px 14px; background-color: var(--primary-color); color: var(--white); font-size: 0.85rem; white-space: nowrap; }
.btn-table:hover { background-color: var(--accent-color); }
.btn-block { display: block; width: 100%; }
/* Статичная шапка сайта */
.site-header { position: fixed; top: 0; left: 0; width: 100%; background-color: var(--white); box-shadow: 0 4px 12px rgba(0,0,0,0.06); z-index: 1000; padding: 18px 0; }
.header-wrap { display: flex; justify-content: space-between; align-items: center; gap: 20px; }
.logo { font-size: 1.4rem; font-weight: 800; flex-shrink: 0; line-height: 1.2; }
.logo-link { text-decoration: none; display: inline-block; color: inherit; transition: opacity 0.2s ease; }
.logo-link:hover { opacity: 0.85; }
.logo-company { color: var(--text-muted); font-weight: 600; margin-right: 2px; }
.logo-accent { color: var(--primary-color); }
.logo-domain { color: var(--accent-color); }
.logo-sub { font-size: 0.72rem; color: var(--text-muted); display: block; font-weight: 400; margin-top: 2px; letter-spacing: 0.3px; }

/* Главное навигационное меню */
.main-nav { display: flex; align-items: center; flex-grow: 1; justify-content: center; }
.nav-list { display: flex; list-style: none; gap: 24px; }
.nav-list a { text-decoration: none; color: var(--primary-color); font-weight: 500; font-size: 0.95rem; transition: color 0.3s; white-space: nowrap; }
.nav-list a:hover { color: var(--accent-color); }
.menu-toggle { display: none; background: none; border: none; font-size: 1.5rem; color: var(--primary-color); cursor: pointer; }
.header-contacts { display: flex; align-items: center; gap: 20px; flex-shrink: 0; }
.phone-link { color: var(--primary-color); text-decoration: none; font-weight: 700; white-space: nowrap; }
.phone-link i { color: var(--accent-color); margin-right: 5px; }

/* Главный разворот (Hero разворот) */
.hero { background: linear-gradient(rgba(44, 62, 80, 0.85), rgba(44, 62, 80, 0.85)), url('https://unsplash.com') no-repeat center center/cover; padding: 120px 0; color: var(--white); }
.hero-content { max-width: 850px; }
.hero h1 { color: var(--white); font-size: 3rem; line-height: 1.2; margin-bottom: 20px; }
.hero p { font-size: 1.2rem; margin-bottom: 35px; opacity: 0.9; }
.hero-actions { display: flex; gap: 15px; }
.badge { background-color: var(--accent-color); color: var(--white); padding: 4px 14px; border-radius: 20px; font-size: 0.85rem; font-weight: 600; display: inline-block; margin-bottom: 15px; }
/* Сетки адаптивности */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 40px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }

/* Стили карточек импортозамещения */
.card { background-color: var(--white); padding: 30px 20px; border-radius: 6px; box-shadow: 0 4px 15px rgba(0,0,0,0.02); border-bottom: 3px solid transparent; transition: all 0.3s ease; }
.card:hover { transform: translateY(-5px); border-bottom-color: var(--accent-color); }
.card-icon { font-size: 2rem; color: var(--accent-color); margin-bottom: 15px; }
.card h3 { font-size: 1.15rem; margin-bottom: 10px; }
.card p { font-size: 0.9rem; color: var(--text-muted); }

/* UX Блок Металлопроката */
.ux-metal-block { display: grid; grid-template-columns: 2fr 1fr; gap: 50px; background-color: var(--light-bg); padding: 50px; border-radius: 8px; align-items: center; }
.pre-title { color: var(--accent-color); text-transform: uppercase; font-size: 0.85rem; font-weight: 700; letter-spacing: 1px; display: block; margin-bottom: 5px; }
.ux-metal-text h2 { font-size: 2.2rem; margin-bottom: 20px; }
.metal-advantages { list-style: none; margin: 25px 0; }
.metal-advantages li { margin-bottom: 12px; display: flex; align-items: center; gap: 12px; }
.metal-advantages i { color: var(--accent-color); flex-shrink: 0; }
.ux-metal-badge { display: flex; flex-direction: column; gap: 20px; }
.badge-item { background-color: var(--white); padding: 25px; text-align: center; border-radius: 6px; box-shadow: 0 4px 10px rgba(0,0,0,0.02); }
.badge-item h3 { font-size: 2.2rem; color: var(--accent-color); margin-bottom: 5px; }
.badge-item p { font-size: 0.9rem; color: var(--text-muted); }

/* Стилизация таблицы прайс-листа */
.table-responsive { overflow-x: auto; background-color: var(--white); border-radius: 6px; box-shadow: 0 4px 15px rgba(0,0,0,0.03); }
.price-table { width: 100%; border-collapse: collapse; text-align: left; min-width: 850px; }
.price-table th, .price-table td { padding: 16px 20px; border-bottom: 1px solid #ECEFF1; }
.price-table th { background-color: var(--primary-color); color: var(--white); font-weight: 600; }
.price-table tr:hover { background-color: #FDFEFE; }
.table-price { font-weight: 700; color: var(--primary-color); }

/* Секция коммерческого предложения КП */
.kp-section { background-color: var(--primary-color); color: var(--white); }
.kp-wrapper { display: flex; justify-content: space-between; align-items: center; gap: 30px; }
.kp-text h2 { color: var(--white); margin-bottom: 10px; }
.kp-text p { opacity: 0.9; }
.btn-download { background-color: #2ECC71; color: var(--white); white-space: nowrap; }
.btn-download:hover { background-color: #27AE60; }
/* Информационные списки и реквизиты ООО */
.styled-list { list-style: none; margin-top: 20px; }
.styled-list li { margin-bottom: 12px; position: relative; padding-left: 20px; }
.styled-list li::before { content: "■"; color: var(--accent-color); position: absolute; left: 0; }
.requisites-box { background-color: var(--white); padding: 30px; border-radius: 6px; box-shadow: 0 4px 15px rgba(0,0,0,0.03); }
.requisites-box h3 { margin-bottom: 15px; border-bottom: 2px solid var(--light-bg); padding-bottom: 10px; }
.requisites-box p { margin-bottom: 8px; font-size: 0.95rem; }
.diploms-container { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 25px; }
.diplom-tag { background-color: #ECEFF1; color: var(--primary-color); padding: 6px 14px; border-radius: 4px; font-size: 0.85rem; font-weight: 600; }
.diplom-tag i { color: var(--accent-color); margin-right: 5px; }
.review-card { background-color: var(--white); padding: 30px; border-radius: 6px; box-shadow: 0 4px 15px rgba(0,0,0,0.02); border: 1px solid #ECEFF1; }
.review-stars { color: #F1C40F; margin-bottom: 10px; }
.review-dep { font-size: 0.8rem; color: var(--text-muted); display: block; margin-bottom: 15px; }

/* Стили полей ввода */
.contact-list { list-style: none; margin-top: 25px; }
.contact-list li { margin-bottom: 15px; display: flex; align-items: center; gap: 15px; }
.form-container { background-color: rgba(255,255,255,0.05); padding: 40px; border-radius: 6px; }
.form-container h3 { margin-bottom: 20px; }
input, textarea { width: 100%; padding: 12px 15px; margin-bottom: 15px; border: 1px solid #CCCCCC; border-radius: 4px; background-color: var(--white); color: var(--text-main); font-family: inherit; }
.bg-dark input, .bg-dark textarea { background-color: var(--white); border: none; }

/* Интерактивные модальные окна и футер */
.modal-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background-color: rgba(0,0,0,0.6); display: flex; justify-content: center; align-items: center; opacity: 0; pointer-events: none; transition: opacity 0.3s ease; z-index: 2000; }
.modal-overlay.active { opacity: 1; pointer-events: auto; }
.modal-window { background-color: var(--white); padding: 40px; border-radius: 6px; width: 100%; max-width: 480px; position: relative; transform: scale(0.9); transition: transform 0.3s ease; }
.modal-overlay.active .modal-window { transform: scale(1); }
.modal-close { position: absolute; top: 15px; right: 20px; background: none; border: none; font-size: 1.8rem; cursor: pointer; color: var(--text-muted); transition: color 0.2s ease; }
.modal-close:hover { color: var(--accent-color); }
.modal-window h3 { margin-bottom: 10px; }
.modal-window p { margin-bottom: 20px; color: var(--text-muted); }

/* Окно Политики конфиденциальности */
.privacy-window { max-width: 650px; max-height: 85vh; display: flex; flex-direction: column; }
.privacy-content { overflow-y: auto; padding-right: 15px; text-align: left; }
.privacy-content h2 { font-size: 1.5rem; margin-bottom: 5px; color: var(--primary-color); }
.privacy-date { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 20px; }
.privacy-content h3 { font-size: 1.1rem; margin-top: 20px; margin-bottom: 8px; color: var(--primary-color); }
.privacy-content p { font-size: 0.9rem; color: var(--text-main); margin-bottom: 12px; line-height: 1.5; }
.privacy-content ul { margin-left: 20px; margin-bottom: 15px; font-size: 0.9rem; }
.privacy-content ul li { margin-bottom: 5px; }

/* Красивый скроллбар */
.privacy-content::-webkit-scrollbar { width: 6px; }
.privacy-content::-webkit-scrollbar-track { background: #F1F1F1; border-radius: 4px; }
.privacy-content::-webkit-scrollbar-thumb { background: #C1C1C1; border-radius: 4px; }
.privacy-content::-webkit-scrollbar-thumb:hover { background: #A8A8A8; }
.footer-bottom { background-color: #111822; padding: 25px 0; color: #7F8C8D; font-size: 0.9rem; }

/* Подписи согласия и reCAPTCHA v2 */
.form-privacy-notice { font-size: 0.78rem; color: #A0AAB2; margin-top: 12px; line-height: 1.4; text-align: left; }
.form-privacy-notice a { color: var(--accent-color); text-decoration: underline; transition: color 0.3s ease; }
.form-privacy-notice a:hover { color: var(--accent-hover); }
.modal-privacy { color: #7F8C8D; margin-top: 15px; }
.g-recaptcha { margin-bottom: 15px; display: flex; justify-content: center; }

/* Адаптивные медиа-запросы */
@media (max-width: 992px) {
    .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; gap: 30px; }
    .ux-metal-block { grid-template-columns: 1fr; padding: 30px; gap: 30px; }
    .kp-wrapper { flex-direction: column; text-align: center; }
    .hero h1 { font-size: 2.2rem; }
    .section-title.text-left { text-align: center; }
    .diploms-container { justify-content: center; }
}
@media (max-width: 768px) {
    body { padding-top: 70px; }
    .menu-toggle { display: block; }
    .nav-list { display: none; flex-direction: column; width: 100%; position: absolute; top: 100%; left: 0; background-color: var(--white); padding: 20px; box-shadow: 0 4px 10px rgba(0,0,0,0.1); gap: 15px; }
    .nav-list.active { display: flex; }
    .header-contacts { display: none; }
    .hero-actions { flex-direction: column; }
    .form-container { padding: 20px; }
}
@media (max-width: 360px) {
    .g-recaptcha { transform: scale(0.85); transform-origin: 0 0; }
}