/* === ПЕРЕМЕННЫЕ === */
:root {
    --primary-color: #0E5C80;
    --primary-color-hover: #116D97;
    --accent-color: #0C4C6A;
    --dark-color: #333;
    --light-color: #ebf8ff;
    --light-color-hover: #d1efff;
    --font-family: 'Rubik', sans-serif;
    --inputs-buttons-border-radius: 15px;
    --price-with-compare-color: #ff3131;
    --quote-color: #ff9900;
    --quote-color-hover: #e68a00;
}

/* === БАЗА === */
body {
    font-family: var(--font-family);
    margin: 0;
    padding: 0;
    background-color: #fafafa;
    color: #1b1b1b;
    overflow-x: hidden;
    width: 100%;
    font-size: 15px;
    line-height: 1.5;
}
.container {
    max-width: 1400px;
    margin: auto;
    padding: 0 20px;
    box-sizing: border-box;
}
* { box-sizing: border-box; }

/* === PICTURE: не ломать flex-центрирование картинок === */
picture { display: contents; }

/* === ШАПКА === */
.header {
    background-color: var(--primary-color);
    color: white;
    padding: 22px 0;
    text-align: center;
}
.header h1 {
    margin: 0;
    font-size: 2.2em;
    line-height: 1.2;
    font-weight: 600;
}
.header p {
    margin: 8px 0 0;
    font-size: 1.05em;
    color: rgba(255,255,255,0.7);
    font-weight: 400;
}
.header .back-link {
    color: #ff9900;
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95em;
    display: inline-block;
    margin-bottom: 8px;
}
.header .back-link:hover { text-decoration: underline; }

/* === НАВИГАЦИЯ === */
.nav {
    background-color: var(--accent-color);
    padding: 12px 0;
    text-align: center;
}
.nav .container {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
}
.nav a {
    color: rgba(255,255,255,0.85);
    text-decoration: none;
    margin: 0 15px;
    font-weight: 500;
    font-size: 14px;
    transition: color 0.2s;
    display: inline-block;
}
.nav a:hover { color: #ffffff; }

.cart-link {
    color: white;
    text-decoration: none;
    font-weight: 500;
    font-size: 14px;
    padding: 8px 16px;
    background-color: var(--primary-color-hover);
    border-radius: var(--inputs-buttons-border-radius);
    transition: background-color 0.2s;
    display: inline-block;
    vertical-align: middle;
    margin-left: 30px;
}
.cart-link:hover { background-color: var(--accent-color); }

.btn-get-quote {
    display: inline-block;
    background: var(--quote-color);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: var(--inputs-buttons-border-radius);
    font-family: inherit;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s, transform 0.2s;
    margin-left: 15px;
    vertical-align: middle;
}
.btn-get-quote:hover {
    background: var(--quote-color-hover);
    transform: translateY(-1px);
}

/* === ХЛЕБНЫЕ КРОШКИ === */
.breadcrumbs {
    margin: 20px 0;
    font-size: 0.85em;
    color: #7a8a9a;
}
.breadcrumbs a {
    color: var(--primary-color);
    text-decoration: none;
}
.breadcrumbs a:hover { text-decoration: underline; }
.breadcrumbs span { color: #7a8a9a; }

/* === МОДАЛКА СЧЁТ/КП === */
.quote-modal {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    z-index: 2000;
    align-items: center;
    justify-content: center;
    padding: 20px;
}
.quote-modal.show { display: flex; }
.quote-modal-content {
    background: white;
    border-radius: var(--inputs-buttons-border-radius);
    padding: 32px;
    max-width: 1000px;
    width: 100%;
    position: relative;
    max-height: 90vh;
    overflow-y: auto;
}
.quote-close {
    position: absolute;
    top: 15px;
    right: 20px;
    font-size: 28px;
    color: #999;
    cursor: pointer;
    line-height: 1;
    transition: color 0.2s;
}
.quote-close:hover { color: var(--primary-color); }
.quote-modal-content h3 {
    margin: 0 0 8px;
    color: var(--dark-color);
    font-size: 1.35em;
    font-weight: 600;
}
.quote-desc {
    color: #686868;
    font-size: 14px;
    margin: 0 0 22px;
    line-height: 1.5;
}
.quote-modal-content input,
.quote-modal-content textarea {
    width: 100%;
    padding: 12px 14px;
    margin-bottom: 12px;
    border: 1px solid #d0d8e0;
    border-radius: var(--inputs-buttons-border-radius);
    font-size: 15px;
    font-family: inherit;
}
.quote-modal-content input:focus,
.quote-modal-content textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}
.quote-modal-content button[type="submit"] {
    background: var(--quote-color);
    color: white;
    border: none;
    padding: 14px;
    border-radius: var(--inputs-buttons-border-radius);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    width: 100%;
    font-family: inherit;
    transition: background 0.2s;
}
.quote-modal-content button[type="submit"]:hover {
    background: var(--quote-color-hover);
}

/* === ПОДВАЛ === */
.footer {
    background: #333;
    color: #ffffff;
    padding: 40px 0 20px;
    font-size: 14px;
}
.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 30px;
}
.footer-section h4 {
    color: #ffffff;
    margin: 0 0 15px;
    font-size: 14px;
    font-weight: 500;
}
.footer-section a {
    color: #ffffff;
    text-decoration: none;
    display: block;
    margin-bottom: 6px;
    font-size: 13.5px;
    transition: opacity 0.2s;
}
.footer-section a:hover { opacity: 0.5; }
.footer-section p {
    margin: 0 0 6px;
    color: #ffffff;
    font-size: 13.5px;
}
.footer-bottom {
    text-align: center;
    padding: 20px 0 0;
    border-top: 1px solid rgba(255,255,255,0.15);
    color: rgba(255,255,255,0.6);
    font-size: 13px;
}

/* === МОБИЛЬНАЯ === */
@media (max-width: 768px) {
    body { font-size: 14.5px; }
    .container { padding: 0 15px; }
    .header { padding: 18px 0; }
    .header h1 { font-size: 1.5em; padding: 0 10px; }
    .header p { font-size: 0.95em; padding: 0 10px; }
    .nav .container { flex-direction: column; gap: 10px; }
    .nav a { margin: 2px 8px; font-size: 13.5px; }
    .cart-link { margin-left: 0; font-size: 13.5px; padding: 7px 14px; }
    .btn-get-quote { margin-left: 0; font-size: 13.5px; padding: 8px 16px; }
    .footer { padding: 30px 0 15px; }
    .footer-content { grid-template-columns: 1fr; gap: 22px; }
    .footer-section { text-align: center; }
    .quote-modal-content { padding: 24px; }
}

/* === A11Y: VISUALLY HIDDEN === */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* === A11Y: ARIA-INVALID === */
input[aria-invalid="true"],
textarea[aria-invalid="true"] {
    border-color: #dc3545 !important;
    background-color: #fff5f5;
}
input[aria-invalid="true"]:focus,
textarea[aria-invalid="true"]:focus {
    outline: 2px solid #dc3545;
    outline-offset: 1px;
}

/* === КНОПКА "В КОРЗИНУ" В ТАБЛИЦАХ ПРАЙСА === */
.cart-button {
    display: inline-block;
    background-color: var(--primary-color);
    color: #ffffff;
    border: none;
    padding: 6px 12px;
    border-radius: var(--inputs-buttons-border-radius);
    font-family: inherit;
    font-size: 12px;
    font-weight: 500;
    line-height: 1.2;
    cursor: pointer;
    transition: background-color 0.2s;
    white-space: nowrap;
    outline: none;
}
.cart-button:hover {
    background-color: var(--primary-color-hover);
}
.cart-button:active {
    transform: translateY(1px);
}
.cart-button:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* === SVG-ИКОНКИ В NAV И FOOTER === */
.nav-icon,
.footer-icon {
    display: inline-block;
    vertical-align: middle;
    position: relative;
    top: -1px;
    margin-right: 4px;
    flex-shrink: 0;
}

/* Иконки на тёмном фоне (nav-кнопки, cart-link, footer) — белые */
.nav-icon--light,
.footer-icon {
    filter: brightness(0) invert(1);
}