/* public/css/main.css */
/* Reset and Custom Properties */
:root {
    --color-primary: #00467F; /* Tech Blue */
    --color-secondary: #E31837; /* Industrial Red */
    --color-text: #333333;
    --color-text-light: #666666;
    --color-bg: #F5F7FA;
    --color-bg-light: #FFFFFF;
    --color-border: #E0E4E8;
    
    --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    
    --transition-fast: 0.2s ease-in-out;
    --border-radius: 4px;
}

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

body {
    font-family: var(--font-body);
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

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

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-secondary);
}

ul {
    list-style: none;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    border: 0;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Utilities */
.btn {
    display: inline-block;
    background-color: var(--color-primary);
    color: var(--color-bg-light);
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    border-radius: var(--border-radius);
    text-align: center;
    border: 2px solid var(--color-primary);
    transition: background-color var(--transition-fast), color var(--transition-fast);
    cursor: pointer;
}

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

.btn--outline {
    background-color: transparent;
    color: var(--color-primary);
}

.btn--outline:hover {
    background-color: var(--color-primary);
    color: var(--color-bg-light);
}

.section {
    padding: 4rem 0;
}

.section__title {
    font-size: 2rem;
    font-family: var(--font-heading);
    color: var(--color-primary);
    margin-bottom: 2rem;
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.section__title--small {
    font-size: 1.5rem;
    text-align: left;
    margin-bottom: 1rem;
    margin-top: 2rem;
}

/* Header Component */
.header {
    background-color: #1a1a1a;
    border-bottom: 3px solid var(--color-secondary);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 10px rgba(0,0,0,.4);
}

.header__container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 1.5rem;
}

.header__menu {
    display: flex;
    gap: 1.5rem;
}

.header__link {
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.9rem;
    color: rgba(255,255,255,.85);
}

.header__link:hover, .header__link.active {
    color: var(--color-secondary);
}

.header__item--dropdown {
    position: relative;
}

.header__submenu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: #1a1a1a;
    box-shadow: 0 6px 16px rgba(0,0,0,0.4);
    min-width: 240px;
    padding: 0.5rem 0;
    border-radius: 0 0 4px 4px;
    border-top: 2px solid var(--color-secondary);
    z-index: 101;
}

.header__item--dropdown:hover .header__submenu {
    display: block;
}

.header__sublink {
    display: block;
    padding: 0.5rem 1.25rem;
    color: rgba(255,255,255,.8);
    font-size: 0.85rem;
}

.header__sublink:hover {
    background-color: rgba(255,255,255,.08);
    color: var(--color-secondary);
}

.header__menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

/* Hero Section */
.hero {
    background: linear-gradient(rgba(0,0,0,0.6), rgba(0,0,0,0.6)), url('/public/img/hero-bg-placeholder.png') center/cover;
    height: 60vh;
    min-height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--color-bg-light);
}

.hero__title {
    font-size: 3rem;
    font-family: var(--font-heading);
    margin-bottom: 1rem;
    text-shadow: 0 2px 4px rgba(0,0,0,0.5);
}

.hero__subtitle {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    text-shadow: 0 2px 4px rgba(0,0,0,0.5);
}

/* Brands Grid */
.brands__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

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

@media (max-width: 480px) {
    .brands__grid {
        grid-template-columns: 1fr;
    }
}

.brand-card {
    background: var(--color-bg-light);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: 2rem 1.5rem;
    text-align: center;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
    color: inherit;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.brand-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.08);
    border-color: var(--color-primary);
    color: inherit;
}

.brand-card__img {
    height: 100px;
    width: 100%;
    object-fit: contain;
    margin: 0 auto 1rem;
    padding: 0.5rem;
}

.brand-card__title {
    font-size: 1.25rem;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

/* Categories Grid */
.categories__grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 1rem;
}

.category-card {
    background: var(--color-bg-light);
    border: 1px solid var(--color-border);
    padding: 1.5rem;
    text-align: center;
    border-radius: var(--border-radius);
    border-bottom: 3px solid var(--color-primary);
}

.category-card:hover {
    background: var(--color-primary);
    color: var(--color-bg-light);
}

.category-card:hover .category-card__title {
    color: var(--color-bg-light);
}

.category-card__title {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--color-text);
}

/* Page Layout */
.page-content {
    padding: 2rem 1.5rem;
    min-height: 60vh;
}

.page-header {
    margin-bottom: 2rem;
    border-bottom: 1px solid var(--color-border);
    padding-bottom: 1rem;
}

.page-title {
    font-size: 2.5rem;
    color: var(--color-primary);
}

.breadcrumb {
    margin-bottom: 1rem;
    font-size: 0.85rem;
}

.breadcrumb ol {
    display: flex;
    gap: 0.5rem;
}

.breadcrumb li:not(:last-child)::after {
    content: '/';
    margin-left: 0.5rem;
    color: var(--color-text-light);
}

/* Products Grid */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
}

.product-card {
    background: var(--color-bg-light);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.product-card__img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    background: #e9ecef;
}

.product-card__body {
    padding: 1.5rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.product-card__title {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.product-card__desc {
    color: var(--color-text-light);
    margin-bottom: 1.5rem;
    flex-grow: 1;
    font-size: 0.95rem;
}

/* Product Detail */
.product-detail {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    background: var(--color-bg-light);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: 2rem;
}

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

.product-detail__img {
    width: 100%;
    height: auto;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
}

.product-detail__brand {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-secondary);
    font-weight: 700;
}

.product-detail__title {
    font-size: 2.5rem;
    color: var(--color-primary);
    margin-bottom: 1rem;
    line-height: 1.2;
}

.product-detail__desc {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    color: var(--color-text-light);
}

/* Tables */
.table-specs {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 2rem;
}

.table-specs th, .table-specs td {
    padding: 0.75rem 1rem;
    border: 1px solid var(--color-border);
}

.table-specs th {
    background-color: var(--color-bg);
    width: 40%;
    text-align: left;
    color: var(--color-text);
}

/* Downloads */
.download-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.download-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    color: var(--color-text);
    font-weight: 500;
}

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

/* Footer Element */
.footer {
    background-color: #1a1a1a;
    color: #f5f5f5;
    padding: 4rem 0 0;
}

.footer__container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem 3rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
}

.footer__title {
    color: var(--color-bg-light);
    font-size: 1.25rem;
    margin-bottom: 1.5rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.footer__list li {
    margin-bottom: 0.5rem;
}

.footer__column p {
    margin-bottom: 0.5rem;
}

.footer__bottom {
    background-color: #0d0d0d;
    text-align: center;
    padding: 1.5rem;
    font-size: 0.85rem;
    color: #999;
}

/* Responsive */
@media (max-width: 768px) {
    .header__menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        flex-direction: column;
        background: var(--color-bg-light);
        padding: 1rem;
        box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    }
    
    .header__menu.is-open {
        display: flex;
    }
    
    .header__menu-toggle {
        display: block;
    }
    
    .header__item--dropdown:hover .header__submenu {
        position: static;
        box-shadow: none;
        padding-left: 1rem;
    }
}