/* СБРОС СТИЛЕЙ И ПЕРЕМЕННЫЕ */
:root {
    --primary-blue: #1A3B5C;
    --secondary-blue: #0B2447;
    --metal-gray: #A3B1C6;
    --accent-orange: #F15A24;
    --light-bg: #F5F7FA;
    --text-dark: #2C3E50;
    --text-light: #FFFFFF;
    --border-light: #E0E6ED;
}

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

body {
    font-family: 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    background-color: #FFFFFF;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ТИПОГРАФИКА */
h1, h2, h3, h4 {
    font-weight: 600;
    line-height: 1.3;
}

.section-title {
    font-size: 2.2rem;
    margin-bottom: 15px;
    color: var(--primary-blue);
    text-align: center;
}

.section-desc {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 40px;
    color: #5A6C7D;
    font-size: 1.1rem;
}

/* КНОПКИ */
.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    text-align: center;
}

.btn--primary {
    background-color: var(--accent-orange);
    color: white;
    box-shadow: 0 4px 12px rgba(241, 90, 36, 0.3);
}

.btn--primary:hover {
    background-color: #D94A1A;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(241, 90, 36, 0.4);
}

.btn--price {
    background-color: transparent;
    color: var(--primary-blue);
    border: 2px solid var(--accent-orange);
    padding: 8px 20px;
    font-size: 0.9rem;
}

.btn--price:hover {
    background-color: var(--accent-orange);
    color: white;
}

.btn--order {
    background-color: var(--primary-blue);
    color: white;
    width: 100%;
    margin-top: 15px;
    padding: 10px;
    border: none;
}

.btn--order:hover {
    background-color: var(--secondary-blue);
    cursor: pointer;
}

/* ШАПКА */
.header {
    background-color: white;
    padding: 15px 0;
    border-bottom: 1px solid var(--border-light);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.header__container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 15px;
}

.logo__text {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-blue);
    display: block;
    line-height: 1.2;
}

.logo__sub {
    font-size: 0.8rem;
    color: var(--metal-gray);
    letter-spacing: 1px;
}

.header__contacts {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

.header__phone {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--primary-blue);
    text-decoration: none;
}

.header__email {
    color: var(--metal-gray);
    text-decoration: none;
    font-size: 0.9rem;
}

/* НАВИГАЦИЯ */
.nav {
    background-color: var(--primary-blue);
    padding: 12px 0;
}

.nav__list {
    display: flex;
    list-style: none;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px 30px;
}

.nav__list a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    padding: 5px 0;
    border-bottom: 2px solid transparent;
    transition: border-color 0.2s;
}

.nav__list a:hover {
    border-bottom-color: var(--accent-orange);
}

/* HERO СЕКЦИЯ */
.hero {
    position: relative;
    padding: 80px 0;
    background: linear-gradient(135deg, var(--secondary-blue) 0%, var(--primary-blue) 100%);
    color: white;
    overflow: hidden;
}

.hero::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    background-image: url('https://images.unsplash.com/photo-1544551763-46a013bb70d5?q=80&w=2070&auto=format&fit=crop');
    background-size: cover;
    background-position: center;
    opacity: 0.25;
    mix-blend-mode: overlay;
    pointer-events: none;
}

.hero__container {
    position: relative;
    z-index: 2;
    max-width: 700px;
    margin: 0;
    padding-left: 40px;
}

.hero__title {
    font-size: 2.8rem;
    margin-bottom: 20px;
    text-shadow: 2px 2px 8px rgba(0,0,0,0.3);
}

.hero__subtitle {
    font-size: 1.3rem;
    margin-bottom: 30px;
    opacity: 0.95;
    text-shadow: 1px 1px 4px rgba(0,0,0,0.3);
}

/* ПРЕИМУЩЕСТВА */
.features {
    padding: 70px 0;
    background-color: white;
}

.features__container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.feature {
    text-align: center;
    padding: 20px;
}

.feature__icon {
    font-size: 3rem;
    color: var(--accent-orange);
    margin-bottom: 20px;
}

.feature__title {
    font-size: 1.4rem;
    margin-bottom: 15px;
    color: var(--primary-blue);
}

/* КАТАЛОГ */
.catalog {
    padding: 70px 0;
    background-color: var(--light-bg);
}

.catalog--alt {
    background-color: white;
}

.catalog__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

/* КАРТОЧКА ТОВАРА */
.product-card {
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 8px 24px rgba(0,0,0,0.08);
    transition: transform 0.3s, box-shadow 0.3s;
    border: 1px solid var(--border-light);
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 16px 32px rgba(0,0,0,0.12);
}

.product-card__img {
    height: 220px;
    background-size: cover;
    background-position: center;
    background-color: var(--primary-blue);
}

.product-card__content {
    padding: 25px 20px;
}

.product-card__title {
    font-size: 1.4rem;
    margin-bottom: 15px;
    color: var(--primary-blue);
}

.product-card__specs {
    list-style: none;
    margin-bottom: 10px;
}

.product-card__specs li {
    padding: 5px 0;
    border-bottom: 1px dashed var(--border-light);
    color: #5A6C7D;
}

.product-card__specs li:last-child {
    border-bottom: none;
}

.product-card__specs strong {
    color: var(--text-dark);
}

/* ТАБЛИЦА СРАВНЕНИЯ */
.comparison {
    padding: 70px 0;
    background-color: white;
}

.comparison__table-wrapper {
    overflow-x: auto;
    margin-top: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.05);
}

.comparison__table {
    width: 100%;
    border-collapse: collapse;
    background: white;
}

.comparison__table th {
    background-color: var(--primary-blue);
    color: white;
    padding: 18px 20px;
    text-align: left;
    font-weight: 600;
    font-size: 1.1rem;
}

.comparison__table td {
    padding: 15px 20px;
    border-bottom: 1px solid var(--border-light);
}

.comparison__table tr:last-child td {
    border-bottom: none;
}

.comparison__table tr:hover td {
    background-color: var(--light-bg);
}

/* FAQ */
.faq {
    padding: 70px 0;
    background-color: var(--light-bg);
}

.faq__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-top: 30px;
}

.faq__item {
    background: white;
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.04);
}

.faq__question {
    font-size: 1.2rem;
    margin-bottom: 15px;
    color: var(--primary-blue);
    display: flex;
    align-items: center;
    gap: 10px;
}

.faq__question i {
    color: var(--accent-orange);
}

.faq__answer {
    color: #5A6C7D;
    padding-left: 35px;
}

/* КОНТАКТЫ */
.contacts {
    padding: 70px 0;
    background-color: white;
}

.contacts__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    margin-top: 30px;
}

.contacts__info {
    background-color: var(--light-bg);
    padding: 30px;
    border-radius: 16px;
}

.contacts__info h3 {
    color: var(--primary-blue);
    margin-bottom: 20px;
    font-size: 1.6rem;
}

.contacts__info p {
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.contacts__info i {
    color: var(--accent-orange);
    width: 20px;
    text-align: center;
}

.contacts__info a {
    color: var(--text-dark);
    text-decoration: none;
}

.contacts__info a:hover {
    color: var(--accent-orange);
}

.contacts__form {
    background-color: white;
    padding: 30px;
    border-radius: 16px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.08);
    border: 1px solid var(--border-light);
}

.contacts__form h3 {
    color: var(--primary-blue);
    margin-bottom: 25px;
    font-size: 1.4rem;
}

.contacts__form input,
.contacts__form textarea {
    width: 100%;
    padding: 14px 16px;
    margin-bottom: 18px;
    border: 1px solid var(--border-light);
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.2s;
}

.contacts__form input:focus,
.contacts__form textarea:focus {
    outline: none;
    border-color: var(--accent-orange);
}

.contacts__form textarea {
    min-height: 100px;
    resize: vertical;
}

.contacts__map {
    margin-top: 50px;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 8px 24px rgba(0,0,0,0.08);
}

/* ФУТЕР */
.footer {
    background-color: var(--secondary-blue);
    color: white;
    padding: 40px 0;
    text-align: center;
}

.footer__container p {
    margin-bottom: 8px;
    opacity: 0.9;
}

/* МОДАЛЬНОЕ ОКНО */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.6);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal__content {
    background: white;
    padding: 40px;
    border-radius: 20px;
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    box-shadow: 0 20px 40px rgba(0,0,0,0.2);
}

.modal__close {
    position: absolute;
    top: 15px;
    right: 20px;
    font-size: 28px;
    cursor: pointer;
    color: var(--metal-gray);
    transition: color 0.2s;
}

.modal__close:hover {
    color: var(--accent-orange);
}

.modal__title {
    color: var(--primary-blue);
    margin-bottom: 20px;
    font-size: 1.8rem;
}

.modal__product-name {
    background-color: var(--light-bg);
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 25px;
    font-weight: 600;
    color: var(--primary-blue);
}

#orderForm input {
    width: 100%;
    padding: 14px 16px;
    margin-bottom: 16px;
    border: 1px solid var(--border-light);
    border-radius: 8px;
    font-size: 1rem;
}

#orderForm input:focus {
    outline: none;
    border-color: var(--accent-orange);
}

.file-label {
    display: block;
    padding: 14px 16px;
    background-color: var(--light-bg);
    border-radius: 8px;
    margin-bottom: 20px;
    cursor: pointer;
    color: var(--text-dark);
    border: 1px dashed var(--metal-gray);
}

.file-label i {
    margin-right: 8px;
    color: var(--accent-orange);
}

.file-label input {
    display: none;
}

/* АДАПТИВНОСТЬ */
@media (max-width: 768px) {
    .section-title {
        font-size: 1.8rem;
    }

    .hero__title {
        font-size: 2rem;
    }

    .hero__subtitle {
        font-size: 1.1rem;
    }

    .hero__container {
        padding-left: 20px;
    }

    .features__container {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .faq__grid {
        grid-template-columns: 1fr;
    }

    .contacts__grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .header__container {
        flex-direction: column;
        align-items: flex-start;
    }

    .header__contacts {
        align-items: flex-start;
    }

    .nav__list {
        flex-direction: column;
        align-items: center;
        gap: 5px;
    }

    .catalog__grid {
        grid-template-columns: 1fr;
    }

    .modal__content {
        padding: 25px;
    }
}

@media (max-width: 480px) {
    .hero__title {
        font-size: 1.6rem;
    }

    .btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }

        .product-card__title {
        font-size: 1.2rem;
    }
}

/* Гарантированно скрываем кнопки заказа */
a.btn--order,
button.btn--order,
[class*="order"] {
    display: none !important;
}

/* ИНФОРМАЦИОННАЯ КАРТОЧКА ДЛЯ ПЕНОАЛЮМИНИЯ */
.product-card--info {
    background: linear-gradient(135deg, #F8FAFC 0%, #EFF3F8 100%);
    border-left: 4px solid var(--accent-orange);
}

.product-card--info .product-card__title {
    display: flex;
    align-items: center;
    gap: 10px;
}

.product-card--info .product-card__title i {
    color: var(--accent-orange);
    font-size: 1.4rem;
}

.tech-note i {
    margin-right: 8px;
    color: var(--accent-orange);
}

/* SEO-ТЕКСТ */
.seo-text {
    padding: 40px 0;
    background-color: white;
    border-top: 1px solid var(--border-light);
    font-size: 0.95rem;
    color: #5A6C7D;
}

.seo-text h2 {
    font-size: 1.6rem;
    color: var(--primary-blue);
    margin-bottom: 20px;
    text-align: left;
}

.seo-text p {
    margin-bottom: 15px;
    line-height: 1.7;
}

.seo-text p:last-child {
    margin-bottom: 0;
}

@media (max-width: 768px) {
    .seo-text h2 {
        font-size: 1.3rem;
}

.btn--telegram {
    background-color: #0088cc;
    color: #ffffff;
    padding: 10px 16px;
    border-radius: 6px;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    transition: background-color 0.3s;
    margin-left: 10px;
}

.btn--telegram:hover {
    background-color: #006699;
}

/* Для варианта 1 — ссылка внутри блока контактов */
.header__telegram {
    color: #0088cc;
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.header__telegram:hover {
    color: #006699;
}