/* ═══════════════════════════════════════════════════════════════
   КМ/Ч 120 — Tire & Wheel Shop Redesign
   Professional e-commerce style inspired by top UA tire shops
   ═══════════════════════════════════════════════════════════════ */

/* ─── CSS Variables ─────────────────────────────────── */
:root {
    --primary: #1e3a5f;
    --primary-dark: #152a45;
    --primary-light: #2d5a8a;
    --accent: #e63946;
    --accent-hover: #d62839;
    --success: #2a9d4a;
    --warning: #f4a100;
    --text-dark: #1a1a2e;
    --text-gray: #5c5c70;
    --text-light: #8a8a9a;
    --bg-light: #f5f7fa;
    --bg-white: #ffffff;
    --border: #e1e5eb;
    --border-light: #f0f2f5;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
}

/* ─── Reset & Base ──────────────────────────────────── */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: 15px;
    line-height: 1.5;
    color: var(--text-dark);
    background-color: var(--bg-light);
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

button {
    font-family: inherit;
    cursor: pointer;
}

/* ─── Container ─────────────────────────────────────── */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1rem;
}

.container-narrow {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* ─── Header ────────────────────────────────────────── */
.header {
    background: var(--bg-white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
}

.top-bar {
    background: var(--primary);
    color: #ffffff;
    font-size: 0.8125rem;
    padding: 0.5rem 0;
}

.container-top {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.lang-selector {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    opacity: 0.9;
}

.working-hours {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.working-hours::before {
    content: "⏰";
    font-size: 0.875rem;
}

/* ─── Main Navigation ───────────────────────────────── */
.main-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.5rem 1rem;
    max-width: 1280px;
    margin: 0 auto;
    gap: 1.5rem;
}

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    flex-shrink: 0;
}

.logo-img {
    height: 56px;
    width: auto;
    display: block;
}

.logo-img-footer {
    height: 52px;
}

.nav-links {
    display: none;
    align-items: center;
    gap: 0.25rem;
}

@media (min-width: 1024px) {
    .nav-links {
        display: flex;
    }
}

.nav-link {
    padding: 0.5rem 0.625rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-dark);
    border-radius: var(--radius-sm);
    transition: all 0.2s;
}

.nav-link:hover {
    background: var(--bg-light);
    color: var(--primary);
}

.nav-link-accent {
    background: var(--accent);
    color: white !important;
}

.nav-link-accent:hover {
    background: #c62b38;
    color: white !important;
}

/* ─── Header Actions ────────────────────────────────── */
.header-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.icon-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: none;
    background: var(--bg-light);
    border-radius: var(--radius-md);
    color: var(--text-gray);
    transition: all 0.2s;
}

.icon-btn:hover {
    background: var(--primary);
    color: #fff;
}

.icon {
    width: 22px;
    height: 22px;
}

.icon-sm {
    width: 16px;
    height: 16px;
}

.cart-btn {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--bg-light);
    border-radius: var(--radius-md);
    color: var(--text-gray);
    transition: all 0.2s;
}

.cart-btn:hover {
    background: var(--primary);
    color: #fff;
}

.cart-badge {
    position: absolute;
    top: -4px;
    right: -4px;
    min-width: 18px;
    height: 18px;
    background: var(--accent);
    color: #fff;
    font-size: 0.6875rem;
    font-weight: 600;
    border-radius: 9px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 4px;
}

.callback-btn {
    display: none;
    align-items: center;
    gap: 0.375rem;
    padding: 0.625rem 1rem;
    background: var(--accent);
    color: #fff;
    font-size: 0.875rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-md);
    transition: background 0.2s;
}

@media (min-width: 768px) {
    .callback-btn {
        display: flex;
    }
}

.callback-btn:hover {
    background: var(--accent-hover);
}

/* ─── Mobile Menu Toggle (Hamburger) ───────────────── */
.mobile-menu-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    padding: 8px;
    background: var(--bg-light);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background 0.2s;
}

@media (min-width: 1024px) {
    .mobile-menu-toggle {
        display: none;
    }
}

.mobile-menu-toggle:hover {
    background: var(--primary);
}

.mobile-menu-toggle:hover .hamburger-line {
    background: #fff;
}

.hamburger-line {
    width: 100%;
    height: 2px;
    background: var(--text-dark);
    border-radius: 2px;
    transition: all 0.3s;
}

.mobile-menu-toggle.active .hamburger-line:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.mobile-menu-toggle.active .hamburger-line:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active .hamburger-line:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ─── Mobile Menu Overlay ──────────────────────────── */
.mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
}

.mobile-menu-overlay.active {
    opacity: 1;
    visibility: visible;
}

.mobile-menu {
    position: absolute;
    top: 0;
    right: 0;
    width: 300px;
    max-width: 85vw;
    height: 100%;
    background: var(--bg-white);
    transform: translateX(100%);
    transition: transform 0.3s ease;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

.mobile-menu-overlay.active .mobile-menu {
    transform: translateX(0);
}

.mobile-menu-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border-light);
}

.mobile-menu-close {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    background: var(--bg-light);
    font-size: 1.75rem;
    line-height: 1;
    color: var(--text-gray);
    border-radius: var(--radius-md);
    cursor: pointer;
}

.mobile-menu-close:hover {
    background: var(--accent);
    color: #fff;
}

.mobile-nav {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 0.5rem 0;
}

.mobile-nav-link {
    display: block;
    padding: 0.875rem 1.5rem;
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-dark);
    border-bottom: 1px solid var(--border-light);
    transition: all 0.2s;
}

.mobile-nav-link:hover {
    background: var(--bg-light);
    color: var(--primary);
    padding-left: 2rem;
}

.mobile-nav-accent {
    color: var(--accent);
    font-weight: 600;
}

.mobile-menu-footer {
    padding: 1.25rem 1.5rem;
    background: var(--bg-light);
    border-top: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.mobile-phone {
    font-size: 1.0625rem;
    font-weight: 600;
    color: var(--primary);
}

.mobile-phone:hover {
    color: var(--accent);
}

.mobile-hours {
    font-size: 0.8125rem;
    color: var(--text-gray);
    margin-top: 0.25rem;
}

@media (min-width: 1024px) {
    .mobile-menu-overlay {
        display: none;
    }
}

/* ─── Search Dropdown ───────────────────────────────── */
.search-wrapper {
    position: relative;
}

.search-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    background: var(--bg-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: 0.75rem;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all 0.2s;
    z-index: 1000;
}

.search-dropdown.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.search-form-header {
    display: flex;
    gap: 0.5rem;
}

.search-input-header {
    width: 260px;
    padding: 0.625rem 0.875rem;
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 0.9375rem;
    outline: none;
    transition: border-color 0.2s;
}

.search-input-header:focus {
    border-color: var(--primary);
}

.search-submit-header {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    transition: background 0.2s;
}

.search-submit-header:hover {
    background: var(--primary-dark);
}

/* ─── Hero Section ──────────────────────────────────── */
.hero {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    padding: 2.5rem 0;
    color: #fff;
}

.hero-content {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1rem;
}

.hero-title {
    margin-bottom: 1.5rem;
}

.hero-title h1 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.tab-toggle {
    display: flex;
    gap: 0.5rem;
}

.tab-btn {
    padding: 0.5rem 1.25rem;
    font-size: 0.875rem;
    font-weight: 600;
    border: 2px solid rgba(255,255,255,0.3);
    background: transparent;
    color: #fff;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s;
}

.tab-btn.active, .tab-btn:hover {
    background: #fff;
    color: var(--primary);
    border-color: #fff;
}

/* ─── Filter Bar (Hero) ─────────────────────────────── */
.filter-bar {
    background: rgba(255,255,255,0.1);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-lg);
    padding: 1.25rem;
}

.filter-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
    margin-bottom: 1rem;
}

@media (min-width: 640px) {
    .filter-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 1024px) {
    .filter-grid {
        grid-template-columns: repeat(5, 1fr);
    }
}

.filter-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1rem;
    background: rgba(255,255,255,0.95);
    color: var(--text-dark);
    border-radius: var(--radius-sm);
    font-size: 0.9375rem;
    cursor: pointer;
    transition: all 0.2s;
}

.filter-item:hover {
    background: #fff;
}

.filter-item-select {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
}

.filter-item-select label {
    font-size: 0.75rem;
    font-weight: 600;
    color: rgba(255,255,255,0.8);
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

.filter-item-select select {
    padding: 0.75rem 2.25rem 0.75rem 0.875rem;
    font-size: 0.9375rem;
    border: none;
    border-radius: var(--radius-sm);
    background: rgba(255,255,255,0.95) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%235c5c70' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E") no-repeat right 0.75rem center;
    background-size: 14px;
    appearance: none;
    cursor: pointer;
    transition: all 0.2s;
    color: var(--text-dark);
    min-width: 0;
}

.filter-item-select select:focus {
    outline: none;
    background-color: #fff;
}

.filter-item-select select:hover {
    background-color: #fff;
}

.filter-submit {
    width: 100%;
    padding: 0.875rem;
    background: var(--accent);
    color: #fff;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background 0.2s;
}

.filter-submit:hover {
    background: var(--accent-hover);
}

/* ─── Sections ──────────────────────────────────────── */
.section {
    padding: 2.5rem 0;
}

.section-sm {
    padding: 1.5rem 0;
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
}

.section-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-dark);
}

.section-title-centered {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-dark);
    text-align: center;
    margin-bottom: 1.5rem;
}

.slider-controls {
    display: flex;
    gap: 0.5rem;
}

.slider-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border: 2px solid var(--border);
    background: var(--bg-white);
    border-radius: var(--radius-sm);
    color: var(--text-gray);
    transition: all 0.2s;
}

.slider-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
}

/* ─── Products Grid ─────────────────────────────────── */
.products-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
}

@media (min-width: 640px) {
    .products-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 1024px) {
    .products-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 0.75rem;
    }
}

/* ─── Product Card ──────────────────────────────────── */
.product-card-link {
    text-decoration: none;
    color: inherit;
}

.product-card {
    background: var(--bg-white);
    border-radius: var(--radius-md);
    padding: 0.75rem;
    transition: all 0.2s;
    border: 1px solid var(--border-light);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.product-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--border);
}

.product-image {
    aspect-ratio: 1;
    background: var(--bg-light);
    border-radius: var(--radius-sm);
    overflow: hidden;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s;
}

.product-card:hover .product-image img {
    transform: scale(1.05);
}

.product-name {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-dark);
    margin-bottom: 0.25rem;
    line-height: 1.3;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex-grow: 1;
}

.product-card:hover .product-name {
    color: var(--primary);
}

.product-price {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 0.5rem;
}

.product-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.375rem;
    padding-top: 0.5rem;
    border-top: 1px solid var(--border-light);
    margin-top: auto;
}

.product-status {
    font-size: 0.75rem;
    font-weight: 500;
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
}

.product-status.available {
    background: #e8f5e9;
    color: var(--success);
}

.product-status.pre-order {
    background: #fff8e1;
    color: var(--warning);
}

.cart-add-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    transition: background 0.2s;
}

.cart-add-btn:hover {
    background: var(--primary-dark);
}

.cart-add-btn .icon {
    width: 16px;
    height: 16px;
}

/* ─── Info Boxes ────────────────────────────────────── */
.info-grid {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: 1rem;
}

@media (min-width: 768px) {
    .info-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.info-box {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.25rem;
    background: var(--bg-white);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-light);
}

.info-icon {
    width: 40px;
    height: 40px;
    color: var(--primary);
    flex-shrink: 0;
}

.info-text {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-dark);
}

/* ─── Category Grid ─────────────────────────────────── */
.category-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}

@media (min-width: 768px) {
    .category-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.category-large, .category-item {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    overflow: hidden;
    aspect-ratio: 16/9;
    transition: transform 0.3s;
}

.category-large:hover, .category-item:hover {
    transform: scale(1.02);
}

.category-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.35);
    transition: background 0.3s;
}

.category-large:hover .category-overlay,
.category-item:hover .category-overlay {
    background: rgba(0, 0, 0, 0.2);
}

.category-label-container, .category-label-container-sm {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: flex-end;
    padding: 1.5rem;
    z-index: 1;
}

.category-label, .category-label-sm {
    color: #fff;
    font-size: 1.25rem;
    font-weight: 700;
}

.category-small {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}

@media (min-width: 480px) {
    .category-small {
        grid-template-columns: 1fr 1fr;
    }
}

@media (min-width: 768px) {
    .category-small {
        grid-template-columns: 1fr;
    }
}

.category-item {
    aspect-ratio: 16/10;
}

/* ─── Content Sections ──────────────────────────────── */
.content-section {
    background: var(--bg-white);
}

.content-text {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-gray);
}

.content-text p {
    margin-bottom: 1rem;
}

.contact-phone {
    font-size: 1.25rem;
}

.contact-phone a {
    color: var(--primary);
    font-weight: 600;
}

.contact-phone a:hover {
    color: var(--accent);
}

/* ─── Footer ────────────────────────────────────────── */
.footer {
    background: var(--primary-dark);
    color: #fff;
    padding-top: 2.5rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    padding-bottom: 2rem;
}

@media (min-width: 768px) {
    .footer-grid {
        grid-template-columns: auto 1fr auto;
    }
}

.footer-col {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.logo-top-footer, .logo-bottom-footer {
    color: #fff;
}

.footer-copyright {
    font-size: 0.8125rem;
    opacity: 0.7;
}

.footer-link {
    font-size: 0.9375rem;
    color: rgba(255,255,255,0.8);
    transition: color 0.2s;
}

.footer-link:hover {
    color: #fff;
}

.footer-contacts {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.footer-phones {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.footer-phone {
    font-size: 1.125rem;
    font-weight: 600;
    color: #fff;
}

.footer-phone:hover {
    color: var(--accent);
}

.callback-btn-footer {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.625rem 1rem;
    background: var(--accent);
    color: #fff;
    font-size: 0.875rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-sm);
    width: fit-content;
    transition: background 0.2s;
}

.callback-btn-footer:hover {
    background: var(--accent-hover);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding: 1rem 0;
}

.footer-bottom-content {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    font-size: 0.8125rem;
    opacity: 0.6;
}

@media (min-width: 640px) {
    .footer-bottom-content {
        flex-direction: row;
        justify-content: space-between;
    }
}

/* ─── Catalog Layout with Sidebar ───────────────────── */
.catalog-layout {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

@media (min-width: 1024px) {
    .catalog-layout {
        flex-direction: row;
    }
}

.catalog-main {
    flex: 1;
    min-width: 0;
}

@media (min-width: 1024px) {
    .catalog-main .products-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.catalog-sidebar {
    width: 100%;
}

@media (min-width: 1024px) {
    .catalog-sidebar {
        width: 260px;
        flex-shrink: 0;
    }
}

/* ─── Sidebar Filters ───────────────────────────────── */
.sidebar-filters {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    overflow: hidden;
    position: sticky;
    top: 100px;
}

.sidebar-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    background: var(--primary);
    color: #fff;
    font-size: 0.9375rem;
    font-weight: 600;
}

.sidebar-header .icon {
    width: 20px;
    height: 20px;
}

.filter-section {
    padding: 0.625rem 1rem;
    border-bottom: 1px solid var(--border-light);
}

.filter-section:last-of-type {
    border-bottom: none;
}

.filter-label {
    display: block;
    font-size: 0.6875rem;
    font-weight: 600;
    color: var(--text-gray);
    text-transform: uppercase;
    letter-spacing: 0.025em;
    margin-bottom: 0.25rem;
}

.filter-select {
    width: 100%;
    padding: 0.5rem 2rem 0.5rem 0.625rem;
    font-size: 0.875rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-white) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%235c5c70' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E") no-repeat right 0.625rem center;
    background-size: 14px;
    appearance: none;
    cursor: pointer;
    transition: all 0.2s;
    color: var(--text-dark);
}

.filter-select:focus {
    outline: none;
    border-color: var(--primary);
}

.filter-select:hover {
    border-color: var(--primary-light);
}

/* ─── Price Filter ──────────────────────────────────── */
.price-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.price-input {
    flex: 1;
    min-width: 0;
    padding: 0.5rem 0.625rem;
    font-size: 0.875rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-white);
    color: var(--text-dark);
    transition: all 0.2s;
    -moz-appearance: textfield;
}

.price-input::-webkit-outer-spin-button,
.price-input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.price-input::placeholder {
    color: var(--text-light);
}

.price-input:focus {
    outline: none;
    border-color: var(--primary);
}

.price-input:hover {
    border-color: var(--primary-light);
}

.price-dash {
    color: var(--text-gray);
    flex-shrink: 0;
}

.price-ok-btn {
    flex-shrink: 0;
    padding: 0.5rem 0.75rem;
    font-size: 0.8125rem;
    font-weight: 600;
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s;
}

.price-ok-btn:hover {
    background: var(--primary-dark);
}

.filter-buttons {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
    padding: 0.75rem 1rem;
    background: var(--bg-light);
}

.btn-block {
    width: 100%;
    justify-content: center;
}

.results-count {
    color: var(--text-gray);
    font-size: 0.9375rem;
    margin-bottom: 1rem;
}

.empty-results {
    grid-column: 1 / -1;
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-gray);
}

.empty-results p {
    margin-bottom: 1rem;
    font-size: 1.125rem;
}

/* ─── Buttons ───────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    font-size: 0.9375rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    border: none;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
}

.btn-lg {
    padding: 0.875rem 1.75rem;
    font-size: 1rem;
}

.btn-primary {
    background: var(--primary);
    color: #fff;
}

.btn-primary:hover {
    background: var(--primary-dark);
}

.btn-secondary {
    background: var(--bg-white);
    color: var(--text-dark);
    border: 2px solid var(--border);
}

.btn-secondary:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.btn-accent {
    background: var(--accent);
    color: #fff;
}

.btn-accent:hover {
    background: var(--accent-hover);
}

.btn .icon {
    width: 18px;
    height: 18px;
}

/* ─── Pagination ────────────────────────────────────── */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.375rem;
    margin-top: 2rem;
    flex-wrap: wrap;
}

.pagination-btn,
.pagination-num {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    padding: 0 0.5rem;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s;
}

.pagination-btn {
    background: var(--bg-white);
    color: var(--text-gray);
    border: 1px solid var(--border);
}

.pagination-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.pagination-num {
    background: var(--bg-white);
    color: var(--text-dark);
    border: 1px solid var(--border);
}

.pagination-num:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.pagination-num.active {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

.pagination-dots {
    color: var(--text-light);
    padding: 0 0.25rem;
}

/* ─── Breadcrumb ────────────────────────────────────── */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    font-size: 0.875rem;
    color: var(--text-light);
}

.breadcrumb a {
    color: var(--text-gray);
    transition: color 0.2s;
}

.breadcrumb a:hover {
    color: var(--primary);
}

.breadcrumb span:last-child {
    color: var(--text-dark);
    font-weight: 500;
}

/* ─── Product Detail ────────────────────────────────── */
.product-detail {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
}

@media (min-width: 768px) {
    .product-detail {
        grid-template-columns: 1fr 1fr;
        padding: 2rem;
    }
}

.product-detail-image {
    background: var(--bg-light);
    border-radius: var(--radius-md);
    padding: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-detail-image img {
    max-width: 100%;
    border-radius: var(--radius-sm);
}

.product-detail-info {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.product-detail-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-dark);
}

.product-detail-size {
    font-size: 1rem;
    color: var(--text-gray);
    padding: 0.5rem 0.75rem;
    background: var(--bg-light);
    border-radius: var(--radius-sm);
    width: fit-content;
}

.product-detail-price {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent);
}

.product-detail-status {
    margin: 0.25rem 0;
}

.product-detail-actions {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin: 1rem 0;
}

@media (min-width: 480px) {
    .product-detail-actions {
        flex-direction: row;
    }
}

/* ─── Specs Table ───────────────────────────────────── */
.product-specs {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-light);
}

.product-specs h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 0.875rem;
}

.specs-table {
    width: 100%;
    border-collapse: collapse;
}

.specs-table tr {
    border-bottom: 1px solid var(--border-light);
}

.specs-table tr:last-child {
    border-bottom: none;
}

.specs-table td {
    padding: 0.625rem 0;
    font-size: 0.9375rem;
}

.specs-table td:first-child {
    color: var(--text-gray);
    width: 45%;
}

.specs-table td:last-child {
    color: var(--text-dark);
    font-weight: 500;
}

/* ─── Search Page ───────────────────────────────────── */
.search-page-form {
    max-width: 600px;
    margin: 0 auto 2rem;
}

.search-form-large {
    display: flex;
    gap: 0.75rem;
}

.search-input-large {
    flex: 1;
    padding: 0.875rem 1rem;
    font-size: 1rem;
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    outline: none;
    transition: border-color 0.2s;
}

.search-input-large:focus {
    border-color: var(--primary);
}

.search-btn-large {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.5rem;
    background: var(--primary);
    color: #fff;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background 0.2s;
}

.search-btn-large:hover {
    background: var(--primary-dark);
}

.search-info {
    text-align: center;
    color: var(--text-gray);
    margin-bottom: 2rem;
}

.search-category-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-dark);
    margin: 2rem 0 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--primary);
}

.search-empty {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-gray);
}

.search-empty-icon {
    width: 64px;
    height: 64px;
    color: var(--border);
    margin-bottom: 1rem;
}

.search-empty p {
    margin: 0 0 0.5rem;
    font-size: 1rem;
}

.search-empty-hint {
    color: var(--text-light);
    font-size: 0.9375rem;
}

.search-empty-links {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 1.5rem;
}

@media (max-width: 640px) {
    .search-form-large {
        flex-direction: column;
    }

    .search-empty-links {
        flex-direction: column;
        align-items: center;
    }
}

/* ─── Toast Notifications ───────────────────────────── */
.toast {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--primary);
    color: #fff;
    padding: 1rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 500;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 9999;
}

.toast.show {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.toast.success {
    background: var(--success);
}

.toast.error {
    background: var(--accent);
}

/* ─── Cart Page ─────────────────────────────────────── */
.cart-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

@media (min-width: 1024px) {
    .cart-container {
        grid-template-columns: 1fr 320px;
    }
}

.cart-items {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.cart-item {
    display: grid;
    grid-template-columns: 80px 1fr auto auto auto;
    gap: 1rem;
    align-items: center;
    background: var(--bg-white);
    border-radius: var(--radius-md);
    padding: 1rem;
    border: 1px solid var(--border-light);
}

@media (max-width: 768px) {
    .cart-item {
        grid-template-columns: 60px 1fr;
        grid-template-rows: auto auto;
        gap: 0.75rem;
    }

    .cart-item-quantity,
    .cart-item-price {
        grid-column: 2;
    }

    .cart-item-remove {
        position: absolute;
        top: 0.5rem;
        right: 0.5rem;
    }

    .cart-item {
        position: relative;
    }
}

.cart-item-image {
    width: 80px;
    height: 80px;
    background: var(--bg-light);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

@media (max-width: 768px) {
    .cart-item-image {
        width: 60px;
        height: 60px;
    }
}

.cart-item-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.cart-item-info {
    min-width: 0;
}

.cart-item-name {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--text-dark);
    margin: 0 0 0.25rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.cart-item-article {
    font-size: 0.8125rem;
    color: var(--text-gray);
    margin: 0;
}

.cart-item-quantity {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.qty-btn {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border);
    background: var(--bg-white);
    border-radius: var(--radius-sm);
    font-size: 1.25rem;
    cursor: pointer;
    transition: all 0.2s;
}

.qty-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.qty-value {
    min-width: 2rem;
    text-align: center;
    font-weight: 600;
}

.cart-item-price {
    text-align: right;
}

.price-per-item {
    display: block;
    font-size: 0.75rem;
    color: var(--text-gray);
}

.price-total {
    display: block;
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--accent);
}

.cart-item-remove {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    background: transparent;
    color: var(--text-gray);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s;
}

.cart-item-remove:hover {
    background: #fee2e2;
    color: var(--accent);
}

.cart-item-remove .icon {
    width: 18px;
    height: 18px;
}

/* Cart Summary */
.cart-summary-box {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    border: 1px solid var(--border);
    position: sticky;
    top: 100px;
}

.cart-summary-box h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0 0 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-light);
}

.summary-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.75rem;
    font-size: 0.9375rem;
    color: var(--text-gray);
}

.summary-total {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-dark);
    padding-top: 0.75rem;
    margin-top: 0.75rem;
    border-top: 1px solid var(--border-light);
}

.cart-summary-box .btn {
    margin-top: 1rem;
}

/* Cart Empty */
.cart-empty {
    text-align: center;
    padding: 4rem 1rem;
}

.cart-empty-icon {
    width: 80px;
    height: 80px;
    color: var(--border);
    margin-bottom: 1.5rem;
}

.cart-empty h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-dark);
    margin: 0 0 0.5rem;
}

.cart-empty p {
    color: var(--text-gray);
    margin: 0 0 1.5rem;
}

.cart-empty-actions {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

/* ===== Callback Modal ===== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 420px;
    margin: 1rem;
    transform: translateY(-20px) scale(0.95);
    transition: all 0.3s ease;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.modal-overlay.active .modal {
    transform: translateY(0) scale(1);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border-light);
}

.modal-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-dark);
    margin: 0;
}

.modal-close {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    background: transparent;
    color: var(--text-gray);
    font-size: 1.75rem;
    line-height: 1;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s;
}

.modal-close:hover {
    background: var(--bg-light);
    color: var(--text-dark);
}

.modal-form {
    padding: 1.5rem;
}

.modal-form .form-group {
    margin-bottom: 1.25rem;
}

.modal-form label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.modal-form .required {
    color: var(--accent);
}

.modal-form input,
.modal-form textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 0.9375rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    transition: all 0.2s;
    font-family: inherit;
}

.modal-form input:focus,
.modal-form textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(30, 58, 95, 0.1);
}

.modal-form input::placeholder,
.modal-form textarea::placeholder {
    color: var(--text-light);
}

.modal-form textarea {
    resize: vertical;
    min-height: 80px;
}

.modal-submit {
    width: 100%;
    padding: 0.875rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    color: var(--bg-white);
    background: var(--accent);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s;
}

.modal-submit:hover {
    background: #c62b38;
    transform: translateY(-1px);
}

.modal-submit:disabled {
    background: var(--text-light);
    cursor: not-allowed;
    transform: none;
}

.modal-product-info {
    padding: 1rem 1.5rem;
    background: var(--bg-light);
    border-bottom: 1px solid var(--border-light);
}

.modal-product-name {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 0.25rem;
}

.modal-product-price {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--accent);
}

.modal-hint {
    font-size: 0.8125rem;
    color: var(--text-gray);
    margin: 0 0 1rem;
    line-height: 1.5;
}

/* ===== Calculator Page ===== */
.calculator-section {
    background: var(--bg-light);
    min-height: calc(100vh - 200px);
}

.page-subtitle {
    text-align: center;
    color: var(--text-gray);
    font-size: 1.0625rem;
    margin: -1rem 0 2rem;
}

.calculator-wrapper {
    max-width: 1000px;
    margin: 0 auto;
}

.calculator-form {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-sm);
    margin-bottom: 2rem;
}

.calculator-selects {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    margin-bottom: 1.5rem;
}

@media (max-width: 900px) {
    .calculator-selects {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 500px) {
    .calculator-selects {
        grid-template-columns: 1fr;
    }
}

.calc-select {
    width: 100%;
    padding: 0.875rem 1rem;
    font-size: 0.9375rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--bg-white);
    cursor: pointer;
    transition: all 0.2s;
}

.calc-select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(30, 58, 95, 0.1);
}

.calc-select:disabled {
    background: var(--bg-light);
    color: var(--text-light);
    cursor: not-allowed;
}

.calc-submit {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.calc-submit:disabled {
    background: var(--text-light);
    cursor: not-allowed;
}

/* Calculator Results */
.calculator-results {
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.results-header {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    padding: 1.5rem 2rem;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.results-header h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin: 0 0 0.75rem;
}

.car-specs {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.spec-badge {
    display: inline-block;
    padding: 0.375rem 0.75rem;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-sm);
    font-size: 0.8125rem;
    font-weight: 500;
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0;
}

@media (max-width: 700px) {
    .results-grid {
        grid-template-columns: 1fr;
    }
}

.results-card {
    background: var(--bg-white);
    padding: 1.5rem;
    border: 1px solid var(--border-light);
}

.results-card:first-child {
    border-radius: 0 0 0 var(--radius-lg);
    border-right: none;
}

.results-card:last-child {
    border-radius: 0 0 var(--radius-lg) 0;
}

@media (max-width: 700px) {
    .results-card:first-child {
        border-radius: 0;
        border-right: 1px solid var(--border-light);
        border-bottom: none;
    }
    .results-card:last-child {
        border-radius: 0 0 var(--radius-lg) var(--radius-lg);
    }
}

.results-card-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.25rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--primary);
}

.results-card-header .icon {
    width: 28px;
    height: 28px;
    color: var(--primary);
}

.results-card-header h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-dark);
    margin: 0;
}

.size-section {
    margin-bottom: 1.25rem;
}

.size-section:last-child {
    margin-bottom: 0;
}

.size-section h4 {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--text-gray);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin: 0 0 0.75rem;
}

.size-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.size-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 0.875rem;
    background: var(--bg-light);
    border-radius: var(--radius-sm);
    font-size: 0.9375rem;
}

.size-item.staggered {
    flex-wrap: wrap;
}

.size-label {
    font-size: 0.75rem;
    color: var(--text-gray);
    font-weight: 500;
}

.size-value {
    font-weight: 600;
    color: var(--text-dark);
}

.size-item.staggered .size-value {
    color: var(--primary);
}

/* Calculator Loading */
.calculator-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 3rem;
    background: var(--bg-white);
    border-radius: var(--radius-lg);
}

.loading-spinner {
    width: 48px;
    height: 48px;
    border: 3px solid var(--border-light);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-bottom: 1rem;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.calculator-loading p {
    color: var(--text-gray);
    font-size: 0.9375rem;
}

/* ===== Tire Calculator (Comparison) ===== */
.tire-calculator {
    max-width: 1100px;
    margin: 0 auto;
}

.calc-inputs-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

@media (max-width: 800px) {
    .calc-inputs-wrapper {
        grid-template-columns: 1fr;
    }
}

.calc-input-card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.calc-card-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.5rem;
    background: var(--primary);
    color: white;
}

.tire2-header {
    background: var(--accent);
}

.calc-card-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: rgba(255,255,255,0.2);
    border-radius: 50%;
    font-weight: 700;
    font-size: 1rem;
}

.calc-card-header h3 {
    margin: 0;
    font-size: 1.125rem;
    font-weight: 600;
}

.calc-card-body {
    padding: 1.5rem;
}

.tire-size-display {
    text-align: center;
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
    padding: 1rem;
    background: var(--bg-light);
    border-radius: var(--radius-md);
    margin-bottom: 1.5rem;
}

.tire2-display {
    color: var(--accent);
}

.tire-inputs {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.tire-select, .tire-input {
    width: 100%;
    padding: 0.75rem;
    font-size: 1rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--bg-white);
}

.tire-select:focus, .tire-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(30, 58, 95, 0.1);
}

.input-group label {
    display: block;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-gray);
    margin-bottom: 0.375rem;
}

.disk-inputs {
    padding-top: 1rem;
    border-top: 1px solid var(--border-light);
}

.disk-inputs h4 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-dark);
    margin: 0 0 0.75rem;
}

.disk-inputs-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

/* Results */
.calc-results {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-sm);
}

.results-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-dark);
    margin: 0 0 1.5rem;
    text-align: center;
}

/* Visual Comparison */
.tire-visual-compare {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    padding: 2rem;
    margin-bottom: 2rem;
    background: var(--bg-light);
    border-radius: var(--radius-lg);
}

.tire-visual {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
}

.tire-circle {
    border: 8px solid var(--primary);
    border-radius: 50%;
    background: linear-gradient(135deg, #2c3e50 0%, #1a252f 100%);
    transition: all 0.3s ease;
    position: relative;
}

.tire-circle::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 40%;
    height: 40%;
    background: #c0c0c0;
    border-radius: 50%;
    border: 4px solid #999;
}

.tire2-circle {
    border-color: var(--accent);
}

.tire-visual-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-gray);
}

.tire-visual-vs {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-light);
}

/* Comparison Table */
.comparison-table {
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
    margin-bottom: 2rem;
}

.comparison-row {
    display: grid;
    grid-template-columns: 2fr 1.5fr 1.5fr 1.5fr;
    border-bottom: 1px solid var(--border-light);
}

.comparison-row:last-child {
    border-bottom: none;
}

.comparison-header {
    background: var(--bg-light);
    font-weight: 600;
    font-size: 0.875rem;
}

.comparison-cell {
    padding: 0.875rem 1rem;
    display: flex;
    align-items: center;
}

.param-cell {
    font-weight: 500;
    color: var(--text-dark);
}

.tire1-cell {
    color: var(--primary);
    font-weight: 600;
}

.tire2-cell {
    color: var(--accent);
    font-weight: 600;
}

.diff-cell {
    font-weight: 600;
    justify-content: center;
}

.diff-positive {
    color: #16a34a;
}

.diff-negative {
    color: var(--accent);
}

.diff-neutral {
    color: var(--text-gray);
}

/* Speedometer */
.speedometer-section {
    margin-bottom: 2rem;
}

.speedometer-section h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin: 0 0 1rem;
    color: var(--text-dark);
}

.speedometer-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

@media (max-width: 600px) {
    .speedometer-grid {
        grid-template-columns: 1fr;
    }
}

.speedometer-card {
    background: var(--bg-light);
    padding: 1.25rem;
    border-radius: var(--radius-md);
    text-align: center;
}

.speedometer-real {
    background: var(--primary);
    color: white;
}

.speedometer-diff {
    background: #dcfce7;
}

.speedometer-diff.error-high {
    background: #fee2e2;
}

.speedometer-label {
    font-size: 0.8125rem;
    color: inherit;
    opacity: 0.8;
    margin-bottom: 0.5rem;
}

.speedometer-value {
    font-size: 1.75rem;
    font-weight: 700;
}

.speedometer-value span {
    font-size: 1rem;
    font-weight: 400;
}

.speedometer-note {
    margin-top: 1rem;
    padding: 0.75rem 1rem;
    background: var(--bg-light);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    color: var(--text-gray);
}

.speedometer-note.warning {
    background: #fef3c7;
    color: #92400e;
}

.speedometer-note.success {
    background: #dcfce7;
    color: #166534;
}

/* Alternatives */
.alternatives-section h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin: 0 0 0.5rem;
    color: var(--text-dark);
}

.alternatives-note {
    font-size: 0.875rem;
    color: var(--text-gray);
    margin: 0 0 1rem;
}

.alt-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
}

.alt-diameter-group {
    background: var(--bg-light);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.alt-diameter-header {
    background: var(--primary);
    color: white;
    padding: 0.5rem 1rem;
    font-weight: 600;
    font-size: 0.9375rem;
}

.alt-sizes {
    padding: 0.75rem;
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
}

.alt-size {
    display: flex;
    justify-content: space-between;
    padding: 0.5rem 0.75rem;
    background: var(--bg-white);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
}

.alt-size-name {
    font-weight: 500;
}

.alt-size-diff {
    color: var(--text-gray);
}

.alt-best {
    border-left: 3px solid #16a34a;
}

.alt-good {
    border-left: 3px solid #eab308;
}

.alt-ok {
    border-left: 3px solid var(--text-light);
}

/* Fitment Link Section */
.fitment-link-section {
    margin-top: 2rem;
    padding: 2rem;
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-sm);
}

.fitment-link-section h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-dark);
    margin: 0 0 0.5rem;
}

.fitment-link-section p {
    color: var(--text-gray);
    margin: 0 0 1rem;
}

.fitment-link-section .btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

/* ─── Collapsible Filters ─────────────────────────────── */
.filter-toggle {
    display: flex;
    align-items: center;
    cursor: pointer;
    user-select: none;
}

.filter-arrow {
    margin-left: auto;
    flex-shrink: 0;
    transition: transform 0.2s;
}

.filter-open .filter-arrow {
    transform: rotate(180deg);
}

.filter-value-badge {
    margin-left: 0.375rem;
    font-size: 0.75rem;
    font-weight: 400;
    color: var(--primary);
}

.filter-count-badge {
    background: var(--primary);
    color: #fff;
    font-size: 0.6875rem;
    font-weight: 600;
    min-width: 18px;
    height: 18px;
    border-radius: 9px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-left: 0.375rem;
}

.filter-body {
    display: none;
    margin-top: 0.375rem;
}

.filter-open .filter-body {
    display: block;
}

.filter-search {
    width: 100%;
    padding: 0.4rem 0.625rem;
    font-size: 0.8125rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-white);
    color: var(--text-dark);
    margin-bottom: 0.375rem;
    transition: border-color 0.2s;
}

.filter-search:focus {
    outline: none;
    border-color: var(--primary);
}

.filter-search::placeholder {
    color: var(--text-light);
}

.filter-checkbox-list {
    max-height: 180px;
    overflow-y: auto;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-white);
}

.filter-checkbox-short {
    max-height: none;
    overflow-y: visible;
}

.filter-checkbox-list::-webkit-scrollbar {
    width: 5px;
}

.filter-checkbox-list::-webkit-scrollbar-track {
    background: var(--bg-light);
}

.filter-checkbox-list::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 3px;
}

.filter-check-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.3rem 0.625rem;
    cursor: pointer;
    font-size: 0.8125rem;
    color: var(--text-dark);
    transition: background 0.15s;
}

.filter-check-item:hover {
    background: var(--bg-light);
}

.filter-check-item input[type="checkbox"] {
    flex-shrink: 0;
    width: 15px;
    height: 15px;
    accent-color: var(--primary);
    cursor: pointer;
}

.filter-check-item span {
    line-height: 1.3;
}

/* ─── Live Chat Widget ────────────────────────────────── */
.chat-trigger {
    position: fixed;
    bottom: 2rem;
    right: 0;
    display: flex;
    align-items: center;
    gap: 0;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 1000;
    transform: translateX(calc(100% - 52px));
    transition: transform 0.3s ease;
    padding: 0;
}

.chat-trigger:hover {
    transform: translateX(0);
}

.chat-trigger.active {
    transform: translateX(0);
}

.chat-trigger-icon {
    flex-shrink: 0;
    width: 52px;
    height: 52px;
    background: var(--primary);
    border-radius: 26px 0 0 26px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    box-shadow: var(--shadow-md);
    transition: background 0.2s;
    position: relative;
}

.chat-trigger:hover .chat-trigger-icon {
    background: var(--primary-light);
}

.chat-trigger-text {
    display: flex;
    flex-direction: column;
    padding: 0.5rem 1rem 0.5rem 0.75rem;
    background: var(--primary);
    color: #fff;
    box-shadow: var(--shadow-md);
    white-space: nowrap;
    transition: background 0.2s;
}

.chat-trigger:hover .chat-trigger-text {
    background: var(--primary-light);
}

.chat-trigger-title {
    font-size: 0.875rem;
    font-weight: 600;
    line-height: 1.3;
}

.chat-trigger-sub {
    font-size: 0.75rem;
    opacity: 0.8;
    line-height: 1.3;
}

.chat-unread {
    position: absolute;
    top: -6px;
    left: -6px;
    min-width: 20px;
    height: 20px;
    background: var(--accent);
    color: #fff;
    font-size: 0.75rem;
    font-weight: 700;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 5px;
}

.chat-panel {
    position: fixed;
    bottom: 5rem;
    right: 1rem;
    width: 360px;
    height: 480px;
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    box-shadow: 0 12px 40px rgba(0,0,0,0.18);
    display: flex;
    flex-direction: column;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transform: translateY(16px) scale(0.95);
    transition: all 0.25s ease;
}

.chat-panel.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

.chat-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.875rem 1rem;
    background: var(--primary);
    color: #fff;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    flex-shrink: 0;
}

.chat-header-title {
    font-size: 0.9375rem;
    font-weight: 600;
}

.chat-header-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255,255,255,0.15);
    border: none;
    color: #fff;
    font-size: 1.5rem;
    line-height: 1;
    border-radius: 50%;
    cursor: pointer;
    transition: background 0.2s;
}

.chat-header-close:hover {
    background: rgba(255,255,255,0.3);
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.chat-messages::-webkit-scrollbar {
    width: 5px;
}

.chat-messages::-webkit-scrollbar-track {
    background: transparent;
}

.chat-messages::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 3px;
}

.chat-welcome {
    text-align: center;
    font-size: 0.8125rem;
    color: var(--text-gray);
    padding: 1rem 0.5rem;
    line-height: 1.5;
}

.chat-msg {
    max-width: 82%;
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    line-height: 1.45;
    word-wrap: break-word;
}

.chat-msg-visitor {
    align-self: flex-end;
    background: var(--primary);
    color: #fff;
    border-bottom-right-radius: 4px;
}

.chat-msg-admin {
    align-self: flex-start;
    background: var(--bg-light);
    color: var(--text-dark);
    border-bottom-left-radius: 4px;
}

.chat-name-form {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    border-top: 1px solid var(--border-light);
    flex-shrink: 0;
}

.chat-name-input {
    padding: 0.625rem 0.75rem;
    font-size: 0.9375rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    outline: none;
    font-family: inherit;
    transition: border-color 0.2s;
}

.chat-name-input:focus {
    border-color: var(--primary);
}

.chat-name-btn {
    padding: 0.625rem;
    background: var(--primary);
    color: #fff;
    font-size: 0.9375rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background 0.2s;
}

.chat-name-btn:hover {
    background: var(--primary-dark);
}

.chat-input-area {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 0.75rem;
    border-top: 1px solid var(--border-light);
    flex-shrink: 0;
}

.chat-text-input {
    flex: 1;
    padding: 0.5rem 0.75rem;
    font-size: 0.9375rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    outline: none;
    font-family: inherit;
    transition: border-color 0.2s;
}

.chat-text-input:focus {
    border-color: var(--primary);
}

.chat-send-btn {
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    flex-shrink: 0;
    transition: background 0.2s;
}

.chat-send-btn:hover {
    background: var(--primary-dark);
}

@media (max-width: 768px) {
    .chat-trigger {
        bottom: 1rem;
        transform: translateX(calc(100% - 44px));
    }

    .chat-trigger-icon {
        width: 44px;
        height: 44px;
        border-radius: 22px 0 0 22px;
    }

    .chat-trigger-icon svg {
        width: 20px;
        height: 20px;
    }

    .chat-trigger-title {
        font-size: 0.8125rem;
    }

    .chat-trigger-sub {
        font-size: 0.6875rem;
    }
}

@media (max-width: 480px) {
    .chat-panel {
        right: 0;
        bottom: 0;
        width: 100%;
        height: 100%;
        border-radius: 0;
    }

    .chat-header {
        border-radius: 0;
    }
}