/* ============================================
   HV-TATUSUPPLY - Main Stylesheet
   Tone: Đen/Trắng thuần — Cheyenne Inspired
   ============================================ */

:root {
    /* Dark zones (navbar, hero, footer) */
    --ts-black: #0e0e0e;
    --ts-dark: #161616;
    --ts-gray: #1e1e1e;
    --ts-gray-light: #2a2a2a;
    --ts-gray-mid: #555555;
    --ts-white: #ffffff;
    --ts-off-white: #f2f2f2;
    --ts-accent: #ffffff;
    --ts-accent-dim: rgba(0, 0, 0, 0.08);
    --ts-text: #d9d9d9;
    --ts-text-muted: #8a8a8a;
    --ts-border: #2a2a2a;
    --ts-transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);

    /* Light zones (product sections) */
    --lt-bg: #f7f7f7;
    --lt-card: #ffffff;
    --lt-text: #1a1a1a;
    --lt-text-muted: #666666;
    --lt-border: #e5e5e5;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--ts-black);
    color: var(--ts-text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; }

/* ---- ANNOUNCEMENT BAR ---- */
.announcement-bar {
    background: var(--ts-white);
    color: var(--ts-black);
    text-align: center;
    padding: 8px 0;
    font-size: 0.78rem;
    font-weight: 500;
    letter-spacing: 1.5px;
    text-transform: uppercase;
}

.announcement-bar span {
    margin: 0 1.5rem;
    opacity: 0.7;
}

.announcement-bar .separator {
    opacity: 0.3;
}

/* ---- NAVBAR ---- */
.navbar {
    background-color: var(--ts-black) !important;
    border-bottom: 1px solid var(--ts-border);
    padding: 1rem 0;
    transition: var(--ts-transition);
}

.navbar-brand {
    font-size: 1.3rem;
    letter-spacing: 3px;
    text-transform: uppercase;
    font-weight: 700;
}

.nav-link {
    font-weight: 500;
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--ts-off-white) !important;
    transition: var(--ts-transition);
    padding: 0.4rem 0.8rem !important;
}

.navbar-nav {
    flex-wrap: wrap;
    justify-content: center;
}

.nav-link:hover {
    color: var(--ts-white) !important;
    opacity: 0.7;
}
.dropdown-menu {
    background-color: var(--ts-dark);
    border: 1px solid var(--ts-border);
    border-radius: 0;
    margin-top: 0 !important;
    padding: 0.5rem 0;
}

.dropdown-item {
    color: var(--ts-text);
    font-size: 0.85rem;
    letter-spacing: 0.5px;
    padding: 0.6rem 1.5rem;
    transition: var(--ts-transition);
}

.dropdown-item:hover {
    background-color: var(--ts-gray);
    color: var(--ts-white);
}

.navbar-nav-icons {
    display: flex;
    align-items: center;
    gap: 1.2rem;
}

.navbar-nav-icons a {
    color: var(--ts-off-white);
    font-size: 1.1rem;
    transition: var(--ts-transition);
}

.navbar-nav-icons a:hover {
    color: var(--ts-white);
    opacity: 0.7;
}

/* ---- HERO BANNER ---- */
.hero-banner {
    background: linear-gradient(rgba(0, 0, 0, 0.4), rgba(0, 0, 0, 0.8)), url('/images/hero-banner.png') center/cover no-repeat;
    padding: 8rem 0;
    text-align: center;
    position: relative;
    overflow: hidden;
    border-bottom: 1px solid var(--ts-border);
}

.hero-banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(ellipse at center, rgba(255,255,255,0.03) 0%, transparent 70%);
    pointer-events: none;
}

.hero-banner h1 {
    font-size: 4rem;
    font-weight: 900;
    letter-spacing: 8px;
    text-transform: uppercase;
    color: var(--ts-white);
    position: relative;
    z-index: 1;
    line-height: 1.2;
    text-shadow: 2px 2px 10px rgba(0,0,0,0.5);
}

.hero-banner p {
    font-size: 1.1rem;
    color: #e0e0e0;
    position: relative;
    z-index: 1;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-top: 1rem;
    text-shadow: 1px 1px 5px rgba(0,0,0,0.8);
}

/* ---- LIGHT SECTIONS ---- */
.section-light {
    background: var(--lt-bg);
    color: var(--lt-text);
}

.section-white {
    background: var(--ts-white);
    color: var(--lt-text);
}

.section-light .section-title,
.section-white .section-title {
    color: var(--lt-text);
}

.section-light .section-title::after,
.section-white .section-title::after {
    background: var(--lt-text);
}

.hero-banner .btn-hero {
    display: inline-block;
    margin-top: 2rem;
    padding: 14px 48px;
    background: var(--ts-white);
    color: var(--ts-black);
    font-weight: 600;
    font-size: 0.85rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    border: 2px solid var(--ts-white);
    transition: var(--ts-transition);
    position: relative;
    z-index: 1;
}

.hero-banner .btn-hero:hover {
    background: transparent;
    color: var(--ts-white);
}

/* ---- SECTION HEADERS ---- */
.section-title {
    font-size: 1.4rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 4px;
    margin-bottom: 2.5rem;
    position: relative;
    display: inline-block;
    color: var(--ts-white);
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 40px;
    height: 2px;
    background: var(--ts-white);
}

/* ---- PRODUCT CARD ---- */
.product-card {
    background: var(--lt-card);
    border: 1px solid var(--lt-border);
    border-radius: 0;
    overflow: hidden;
    transition: var(--ts-transition);
    height: 100%;
}

.product-card:hover {
    border-color: #ccc;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
    transform: translateY(-2px);
}

.product-card .card-img-wrapper {
    position: relative;
    overflow: hidden;
    aspect-ratio: 1;
    background: var(--lt-bg);
}

.product-card .card-img-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

.product-card .badge-sale {
    position: absolute;
    top: 12px;
    left: 12px;
    background: var(--ts-black);
    color: var(--ts-white);
    padding: 4px 14px;
    border-radius: 0;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.product-card .wishlist-btn {
    position: absolute;
    top: 12px;
    right: 12px;
    background: rgba(0, 0, 0, 0.5);
    border: none;
    color: white;
    width: 36px;
    height: 36px;
    border-radius: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--ts-transition);
    opacity: 0;
}

.product-card:hover .wishlist-btn {
    opacity: 1;
}

.product-card .wishlist-btn:hover,
.product-card .wishlist-btn.active {
    background: var(--ts-white);
    color: var(--ts-black);
}

.product-card .card-body {
    padding: 1.2rem;
}

.product-card .product-brand {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--lt-text-muted);
    margin-bottom: 0.3rem;
}

.product-card .product-name {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--lt-text);
    text-decoration: none;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: var(--ts-transition);
    letter-spacing: 0.3px;
}

.product-card .product-name:hover {
    color: #000;
}

.product-card .product-price {
    margin-top: 0.8rem;
}

.product-card .price-current {
    font-size: 1rem;
    font-weight: 600;
    color: var(--lt-text);
    letter-spacing: 0.5px;
}

.product-card .price-original {
    font-size: 0.8rem;
    color: #999;
    text-decoration: line-through;
    margin-left: 8px;
}

.product-card .stock-status {
    font-size: 0.7rem;
    margin-top: 0.5rem;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.stock-in { color: #4ade80; }
.stock-out { color: #ef4444; }

/* ---- CATEGORY CARDS ---- */
.category-card {
    background: var(--lt-card);
    border: 1px solid var(--lt-border);
    border-radius: 0;
    padding: 2.5rem 1.5rem;
    text-align: center;
    transition: var(--ts-transition);
    text-decoration: none;
    color: var(--lt-text);
    display: block;
}

.category-card:hover {
    border-color: #999;
    color: #000;
    background: var(--lt-bg);
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(0,0,0,0.06);
}

.category-card i {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--lt-text);
    transition: var(--ts-transition);
}

.category-card:hover i {
    color: #000;
}

.category-card h5 {
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 2px;
}

/* ---- BUTTONS ---- */
.btn-primary-bw {
    background: var(--ts-white);
    color: var(--ts-black);
    border: 2px solid var(--ts-white);
    font-weight: 600;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    font-size: 0.82rem;
    padding: 10px 28px;
    border-radius: 0;
    transition: var(--ts-transition);
}

.btn-primary-bw:hover {
    background: transparent;
    color: var(--ts-white);
    border-color: var(--ts-white);
}

.btn-danger {
    background: var(--ts-white);
    border: 2px solid var(--ts-white);
    color: var(--ts-black);
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    font-size: 0.82rem;
    border-radius: 0;
    transition: var(--ts-transition);
}

.btn-danger:hover {
    background: transparent;
    color: var(--ts-white);
    border-color: var(--ts-white);
}

.btn-outline-light {
    border-color: rgba(255,255,255,0.3);
    color: var(--ts-off-white);
    border-radius: 0;
    letter-spacing: 1px;
    text-transform: uppercase;
    font-size: 0.82rem;
}

.btn-outline-light:hover {
    background: var(--ts-white);
    color: var(--ts-black);
    border-color: var(--ts-white);
}

.btn-dark-custom {
    background: var(--ts-gray);
    border: 1px solid var(--ts-border);
    color: var(--ts-text);
    border-radius: 0;
    transition: var(--ts-transition);
}

.btn-dark-custom:hover {
    background: var(--ts-gray-light);
    border-color: rgba(255,255,255,0.3);
    color: var(--ts-white);
}

/* ---- FILTER SIDEBAR ---- */
.filter-sidebar {
    background: var(--ts-dark);
    border: 1px solid var(--ts-border);
    border-radius: 0;
    padding: 1.5rem;
}

.filter-sidebar h6 {
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    font-size: 0.8rem;
    margin-bottom: 1rem;
    color: var(--ts-white);
}

.form-check-input:checked {
    background-color: var(--ts-black);
    border-color: var(--ts-black);
}

/* ---- ZALO FLOATING BUTTON ---- */
.zalo-float {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 52px;
    height: 52px;
    background: var(--ts-white);
    border-radius: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--ts-black);
    font-size: 1.3rem;
    text-decoration: none;
    box-shadow: 0 4px 20px rgba(255, 255, 255, 0.1);
    transition: var(--ts-transition);
    z-index: 9999;
}

.zalo-float:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(255, 255, 255, 0.2);
    color: var(--ts-black);
}

/* ---- FOOTER ---- */
footer {
    border-top: 1px solid var(--ts-border);
    background: var(--ts-dark) !important;
}

footer h6 {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    font-weight: 600;
    color: var(--ts-white);
    margin-bottom: 1.2rem;
}

footer a {
    color: var(--ts-text-muted);
    text-decoration: none;
    font-size: 0.88rem;
    transition: var(--ts-transition);
    display: block;
    padding: 3px 0;
}

footer a:hover {
    color: var(--ts-white);
}

.footer-bottom {
    border-top: 1px solid var(--ts-border);
    padding-top: 1.5rem;
    margin-top: 2rem;
}

/* ---- FORM CONTROLS (dark theme) ---- */
.form-control, .form-select {
    background-color: var(--ts-gray);
    border: 1px solid var(--ts-border);
    border-radius: 0;
    color: var(--ts-text);
}

.form-control:focus, .form-select:focus {
    background-color: var(--ts-gray-light);
    border-color: rgba(255, 255, 255, 0.4);
    box-shadow: 0 0 0 0.2rem var(--ts-accent-dim);
    color: var(--ts-white);
}

/* ---- PAGINATION ---- */
.page-link {
    background-color: var(--ts-dark);
    border: 1px solid var(--ts-border);
    color: var(--ts-text);
    border-radius: 0;
}

.page-link:hover {
    background-color: var(--ts-gray);
    border-color: rgba(255,255,255,0.3);
    color: var(--ts-white);
}

.page-item.active .page-link {
    background-color: var(--ts-white);
    border-color: var(--ts-white);
    color: var(--ts-black);
}

/* ---- STAR RATINGS ---- */
.star-rating .bi-star-fill { color: #fbbf24; }
.star-rating .bi-star { color: var(--ts-text-muted); }

/* ---- BREADCRUMB ---- */
.breadcrumb-item a {
    color: var(--ts-text-muted);
    text-decoration: none;
}

.breadcrumb-item a:hover {
    color: var(--ts-white);
}

.breadcrumb-item.active {
    color: var(--ts-text);
}

/* ---- CHECKOUT BOX ---- */
.checkout-box {
    background: var(--ts-dark);
    border: 1px solid var(--ts-border);
    border-radius: 0;
    padding: 1.5rem;
}

.payment-option {
    background: var(--ts-gray);
    border: 2px solid var(--ts-border);
    border-radius: 0;
    padding: 1rem;
    cursor: pointer;
    transition: var(--ts-transition);
}

.payment-option:hover,
.payment-option.active {
    border-color: var(--ts-white);
}

.payment-option input[type=radio] {
    accent-color: var(--ts-white);
}

/* ---- REVIEW SECTION ---- */
.review-card {
    background: var(--ts-dark);
    border: 1px solid var(--ts-border);
    border-radius: 0;
    padding: 2rem;
    transition: var(--ts-transition);
}

.review-card:hover {
    border-color: rgba(255,255,255,0.2);
}

/* ---- RESPONSIVE ---- */
@media (max-width: 768px) {
    .hero-banner h1 {
        font-size: 1.8rem;
        letter-spacing: 3px;
    }

    .hero-banner {
        padding: 4rem 0;
    }

    .hero-banner p {
        font-size: 0.8rem;
    }

    .section-title {
        font-size: 1.1rem;
        letter-spacing: 2px;
    }

    .announcement-bar {
        font-size: 0.65rem;
        letter-spacing: 1px;
    }

    .announcement-bar span {
        display: block;
        margin: 2px 0;
    }

    .announcement-bar .separator {
        display: none;
    }

    .zalo-float {
        bottom: 20px;
        right: 20px;
        width: 44px;
        height: 44px;
        font-size: 1.1rem;
    }
}

/* ---- ACCOUNT PAGES ---- */
.account-sidebar {
    background: var(--ts-dark);
    border: 1px solid var(--ts-border);
    padding: 1.5rem;
}

.account-sidebar .nav-link {
    color: var(--ts-text-muted) !important;
    font-size: 0.85rem;
    letter-spacing: 0.5px;
    text-transform: none;
    padding: 0.6rem 1rem !important;
    border: 1px solid transparent;
    transition: var(--ts-transition);
}

.account-sidebar .nav-link:hover {
    color: var(--ts-white) !important;
    background: var(--ts-gray);
}

.account-sidebar .nav-link.active {
    color: var(--ts-white) !important;
    background: var(--ts-gray);
    border-color: var(--ts-border);
    font-weight: 600;
}

.account-box {
    background: var(--ts-dark);
    border: 1px solid var(--ts-border);
    padding: 1.5rem;
}

.account-box .form-control {
    background: #ffffff;
    border: 1px solid #cccccc;
    color: #000000;
    border-radius: 0;
}

.account-box .form-control:focus {
    background: #ffffff;
    border-color: #666666;
    box-shadow: 0 0 0 0.1rem rgba(255,255,255,0.2);
    color: #000000;
}

.account-box .spec-item {
    display: flex;
    justify-content: space-between;
    padding: .5rem 0;
    border-bottom: 1px solid var(--ts-border);
}