/* ========================================================
   THUHAI SHOP - STYLESHEET
   Clean, Minimalist, Elegant Design matching user mockups
   ======================================================== */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap');

:root {
    --bg-page: #fbfbf9;
    --card-bg: #ecece9;
    --card-border: #e2e2de;
    --text-primary: #1a1a1a;
    --text-secondary: #666666;
    --text-muted: #8e8e8e;
    --font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --btn-zalo: #2979ff;
    --btn-fb: #3b82f6;
    --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

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

body {
    background-color: var(--bg-page);
    color: var(--text-primary);
    font-family: var(--font-family);
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
    padding-bottom: 80px;
}

/* Header Area */
.site-header {
    text-align: center;
    padding: 35px 20px 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.shop-title {
    font-size: 20px;
    font-weight: 800;
    letter-spacing: 2.5px;
    text-transform: uppercase;
    color: #1a1a1a;
    margin-bottom: 25px;
}

.section-title {
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: #2b2b2b;
    margin-bottom: 25px;
    display: inline-block;
    position: relative;
}

/* Category Filter Tabs */
.category-filter {
    display: flex;
    justify-content: center;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 30px;
}

.filter-btn {
    background: transparent;
    border: 1px solid #dddcd7;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    color: #555;
    cursor: pointer;
    transition: var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
    background: #222;
    color: #fff;
    border-color: #222;
}

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

.product-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 22px;
}

@media (max-width: 1024px) {
    .product-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 18px;
    }
}

@media (max-width: 768px) {
    .product-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 14px;
    }
}

@media (max-width: 480px) {
    .product-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
}

/* Product Card - Match Screenshot 1 */
.product-card {
    background-color: var(--card-bg);
    border-radius: 14px;
    padding: 12px;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    border: 1px solid rgba(0, 0, 0, 0.03);
    position: relative;
}

.product-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.08);
    background-color: #e6e6e2;
}

.product-thumb-wrapper {
    position: relative;
    width: 100%;
    aspect-ratio: 1 / 1;
    border-radius: 10px;
    overflow: hidden;
    background: #dfdfda;
}

.product-thumb {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.4s ease;
}

.product-card:hover .product-thumb {
    transform: scale(1.03);
}

.product-info {
    padding-top: 12px;
    padding-bottom: 4px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.product-name {
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    color: #1a1a1a;
    line-height: 1.4;
    margin-bottom: 6px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    letter-spacing: 0.3px;
}

.product-price-box {
    margin-top: auto;
    font-size: 12px;
    display: flex;
    align-items: baseline;
    gap: 6px;
    flex-wrap: wrap;
}

.price-original {
    text-decoration: line-through;
    color: var(--text-muted);
    font-size: 11px;
}

.price-current {
    font-weight: 700;
    color: #111;
    font-size: 12px;
    text-decoration: underline;
    text-underline-offset: 2px;
}

.price-contact {
    color: #555;
    font-weight: 500;
    font-size: 12px;
}

/* ========================================================
   MODAL POPUP - Match Screenshot 2
   ======================================================== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.45);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    padding: 20px;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.25s ease, visibility 0.25s ease;
}

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

.modal-content {
    background: #ffffff;
    border-radius: 18px;
    max-width: 680px;
    width: 100%;
    position: relative;
    padding: 24px;
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.22);
    transform: scale(0.95);
    transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    max-height: 90vh;
    overflow-y: auto;
}

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

.modal-close-btn {
    position: absolute;
    top: 14px;
    right: 14px;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: #f1f2f4;
    border: none;
    color: #555;
    font-size: 18px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    z-index: 10;
}

.modal-close-btn:hover {
    background: #e2e8f0;
    color: #000;
}

.modal-body {
    display: grid;
    grid-template-columns: 290px 1fr;
    gap: 24px;
    align-items: start;
}

@media (max-width: 640px) {
    .modal-body {
        grid-template-columns: 1fr;
        gap: 18px;
    }
}

/* Modal Left: Images */
.modal-gallery {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.modal-main-img-wrap {
    width: 100%;
    aspect-ratio: 1 / 1;
    border-radius: 12px;
    overflow: hidden;
    background: #f5f5f5;
    border: 1px solid #ebebeb;
}

.modal-main-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.modal-thumbnails {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding-bottom: 4px;
    scrollbar-width: thin;
}

.modal-thumb-item {
    width: 52px;
    height: 52px;
    border-radius: 8px;
    overflow: hidden;
    cursor: pointer;
    flex-shrink: 0;
    border: 2px solid transparent;
    opacity: 0.65;
    transition: var(--transition);
    background: #f5f5f5;
}

.modal-thumb-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.modal-thumb-item:hover,
.modal-thumb-item.active {
    opacity: 1;
    border-color: #2563eb;
}

/* Modal Right: Details */
.modal-details {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.modal-category {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    color: #888888;
    letter-spacing: 0.8px;
    margin-bottom: 6px;
}

.modal-title {
    font-size: 16px;
    font-weight: 800;
    text-transform: uppercase;
    color: #111;
    line-height: 1.35;
    letter-spacing: 0.3px;
    margin-bottom: 10px;
}

.modal-price-box {
    margin-bottom: 16px;
    display: flex;
    align-items: baseline;
    gap: 8px;
}

.modal-price-original {
    font-size: 13px;
    color: #888;
    text-decoration: line-through;
}

.modal-price-current {
    font-size: 15px;
    font-weight: 800;
    color: #111;
    text-decoration: underline;
    text-underline-offset: 3px;
}

.modal-description {
    font-size: 12.5px;
    color: #4a4a4a;
    line-height: 1.6;
    margin-bottom: 24px;
    white-space: pre-line;
    max-height: 160px;
    overflow-y: auto;
    padding-right: 5px;
}

/* Modal Action Buttons */
.modal-actions {
    display: flex;
    gap: 12px;
    margin-top: auto;
}

.btn-chat {
    flex: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 11px 16px;
    border-radius: 24px;
    font-size: 13px;
    font-weight: 600;
    text-decoration: none;
    color: #ffffff;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.08);
}

.btn-chat-zalo {
    background-color: var(--btn-zalo);
}

.btn-chat-fb {
    background-color: var(--btn-fb);
}

.btn-chat:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 14px rgba(0, 0, 0, 0.15);
    opacity: 0.95;
}

/* Admin floating shortcut link */
.admin-shortcut {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: #1e293b;
    color: #fff;
    padding: 8px 16px;
    border-radius: 30px;
    font-size: 12px;
    font-weight: 600;
    text-decoration: none;
    box-shadow: 0 6px 20px rgba(0,0,0,0.18);
    opacity: 0.75;
    transition: var(--transition);
    z-index: 100;
}

.admin-shortcut:hover {
    opacity: 1;
    transform: translateY(-2px);
}