/* ============================================
   Goobeen Supply Chain - Homepage Styles
   Modern Minimalist Design
   ============================================ */

/* CSS Variables */
:root {
    --color-primary: #E86A2C;
    --color-primary-hover: #d55a1f;
    --color-primary-light: #fdf2ec;
    --color-black: #111111;
    --color-dark: #1a1a1a;
    --color-gray-900: #222222;
    --color-gray-700: #444444;
    --color-gray-500: #666666;
    --color-gray-400: #888888;
    --color-gray-300: #cccccc;
    --color-gray-200: #e5e5e5;
    --color-gray-100: #f5f5f5;
    --color-white: #ffffff;
    --color-bg: #ffffff;
    --color-bg-alt: #fafafa;

    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;

    --container-max: 1280px;
    --container-padding: 24px;

    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.08);
    --shadow-hover: 0 20px 60px rgba(0, 0, 0, 0.12);

    --transition-fast: 0.15s ease;
    --transition-base: 0.25s ease;
    --transition-slow: 0.4s ease;

    --navbar-height: 72px;
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-gray-900);
    background-color: var(--color-bg);
}

/* Inner pages: keep footer at viewport bottom when content is short */
.site-page {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.site-page .site-main {
    flex: 1;
}

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

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

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

ul {
    list-style: none;
}

/* Container */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding-left: var(--container-padding);
    padding-right: var(--container-padding);
}

/* ============================================
   Navbar
   ============================================ */
.navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    height: var(--navbar-height);
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    transition: box-shadow var(--transition-base);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
}

.navbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

.logo-img {
    height: 40px;
    width: auto;
    display: block;
}

.logo-text {
    font-size: 22px;
    font-weight: 700;
    color: var(--color-black);
    letter-spacing: -0.5px;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link {
    padding: 8px 16px;
    font-size: 15px;
    font-weight: 500;
    color: var(--color-gray-700);
    border-radius: var(--radius-sm);
    transition: color var(--transition-fast), background var(--transition-fast);
}

.nav-link:hover {
    color: var(--color-black);
    background: var(--color-gray-100);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

/* Language Dropdown */
.lang-dropdown {
    position: relative;
}

.lang-toggle {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    font-size: 14px;
    font-weight: 500;
    color: var(--color-gray-700);
    background: var(--color-gray-100);
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast);
}

.lang-toggle:hover {
    background: var(--color-gray-200);
}

.lang-arrow {
    transition: transform var(--transition-fast);
}

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

.lang-menu {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    min-width: 140px;
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-6px);
    transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast);
    overflow: hidden;
}

.lang-dropdown.open .lang-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-option {
    display: block;
    width: 100%;
    padding: 10px 16px;
    font-size: 14px;
    text-align: left;
    color: var(--color-gray-700);
    transition: background var(--transition-fast), color var(--transition-fast);
}

.lang-option:hover {
    background: var(--color-gray-100);
    color: var(--color-black);
}

.lang-option.active {
    color: var(--color-primary);
    font-weight: 600;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    padding: 8px;
}

.mobile-menu-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--color-gray-900);
    border-radius: 2px;
    transition: transform var(--transition-base), opacity var(--transition-base);
}

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

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

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

/* ============================================
   Hero Section (Carousel)
   ============================================ */
.hero {
    position: relative;
    overflow: hidden;
}

/* Static fallback content */
.hero-static {
    position: relative;
    padding: 120px 0 140px;
    background: linear-gradient(135deg, var(--color-white) 0%, var(--color-primary-light) 100%);
}

.hero-static::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(232, 106, 44, 0.08) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.hero-static .hero-content {
    position: relative;
    max-width: 680px;
}

.hero-static .hero-title {
    font-size: 56px;
    font-weight: 700;
    line-height: 1.15;
    color: var(--color-black);
    letter-spacing: -1.5px;
    margin-bottom: 24px;
}

.hero-static .hero-desc {
    font-size: 18px;
    line-height: 1.7;
    color: var(--color-gray-500);
    margin-bottom: 36px;
    max-width: 560px;
}

.hero-static .hero-cta {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

/* Carousel */
.hero-carousel {
    display: none;
    position: relative;
    width: 100%;
    height: 560px;
}

.hero-carousel.active {
    display: block;
}

.hero-static.hidden {
    display: none;
}

.carousel-slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    transition: opacity 0.6s ease;
    z-index: 1;
}

.carousel-slide.active {
    opacity: 1;
    z-index: 2;
}

.carousel-slide-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
}

.carousel-slide-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(0,0,0,0.5) 0%, rgba(0,0,0,0.2) 50%, rgba(0,0,0,0.1) 100%);
}

.carousel-slide-content {
    position: relative;
    z-index: 2;
    height: 100%;
    display: flex;
    align-items: center;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.carousel-slide-content .hero-content {
    max-width: 680px;
}

.carousel-slide-content .hero-title {
    font-size: 56px;
    font-weight: 700;
    line-height: 1.15;
    color: var(--color-white);
    letter-spacing: -1.5px;
    margin-bottom: 24px;
    text-shadow: 0 2px 12px rgba(0,0,0,0.3);
}

.carousel-slide-content .hero-desc {
    font-size: 18px;
    line-height: 1.7;
    color: rgba(255,255,255,0.9);
    margin-bottom: 36px;
    max-width: 560px;
    text-shadow: 0 1px 6px rgba(0,0,0,0.3);
}

/* Carousel Arrows */
.carousel-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 10;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255,255,255,0.2);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 50%;
    color: var(--color-white);
    cursor: pointer;
    transition: background 0.2s ease, transform 0.2s ease;
}

.carousel-arrow:hover {
    background: rgba(255,255,255,0.35);
    transform: translateY(-50%) scale(1.05);
}

.carousel-prev { left: 24px; }
.carousel-next { right: 24px; }

/* Carousel Dots */
.carousel-dots {
    position: absolute;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    display: flex;
    gap: 10px;
}

.carousel-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255,255,255,0.4);
    border: none;
    cursor: pointer;
    transition: background 0.2s ease, transform 0.2s ease;
}

.carousel-dot:hover {
    background: rgba(255,255,255,0.7);
}

.carousel-dot.active {
    background: var(--color-white);
    transform: scale(1.2);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    font-size: 16px;
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
}

.btn:hover {
    transform: translateY(-2px);
}

.btn-primary {
    background: var(--color-primary);
    color: var(--color-white);
    box-shadow: 0 4px 16px rgba(232, 106, 44, 0.3);
}

.btn-primary:hover {
    background: var(--color-primary-hover);
    box-shadow: 0 8px 24px rgba(232, 106, 44, 0.35);
}

/* ============================================
   Section Common Styles
   ============================================ */
.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-title {
    font-size: 40px;
    font-weight: 700;
    color: var(--color-black);
    letter-spacing: -1px;
    margin-bottom: 12px;
}

.section-subtitle {
    font-size: 18px;
    color: var(--color-gray-500);
}

/* ============================================
   Products Section
   ============================================ */
.products {
    padding: 100px 0;
    background: var(--color-bg);
}

.category-search {
    margin-bottom: 32px;
    display: flex;
    justify-content: center;
}

.category-search-inner {
    position: relative;
    width: 100%;
    max-width: 480px;
    display: flex;
    align-items: center;
}

.category-search-icon {
    position: absolute;
    left: 14px;
    color: var(--color-gray-400);
    pointer-events: none;
    flex-shrink: 0;
}

.category-search input {
    width: 100%;
    padding: 12px 40px 12px 42px;
    font-size: 15px;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    background: var(--color-white);
    color: var(--color-black);
    outline: none;
    transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.category-search input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

.category-search-clear {
    position: absolute;
    right: 10px;
    width: 22px;
    height: 22px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-gray-200);
    border: none;
    border-radius: 50%;
    color: var(--color-gray-500);
    cursor: pointer;
    transition: background var(--transition-base), color var(--transition-base);
}

.category-search-clear:hover {
    background: var(--color-gray-300);
    color: var(--color-gray-600);
}

.category-search-tip {
    grid-column: 1 / -1;
    font-size: 14px;
    color: var(--color-gray-400);
    margin-bottom: 8px;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
}

.category-card {
    position: relative;
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
    cursor: pointer;
}

.category-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-hover);
    border-color: transparent;
}

.category-image {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: var(--color-gray-100);
}

.category-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

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

.category-image-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-gray-100) 100%);
    color: var(--color-primary);
    font-size: 48px;
    font-weight: 700;
}

.category-info {
    padding: 20px 24px 24px;
}

.category-name {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-black);
    margin-bottom: 6px;
}

.category-count {
    font-size: 14px;
    color: var(--color-gray-400);
}

/* Loading State */
.loading-state {
    grid-column: 1 / -1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 80px 0;
    color: var(--color-gray-400);
    gap: 16px;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--color-gray-200);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* Empty State */
.empty-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: 80px 0;
    color: var(--color-gray-400);
}

.empty-state svg {
    margin-bottom: 16px;
    opacity: 0.5;
}

/* ============================================
   About Section
   ============================================ */
.about {
    padding: 100px 0;
    background: var(--color-bg-alt);
}

.about-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-content .section-title {
    text-align: left;
    margin-bottom: 24px;
}

.about-text {
    font-size: 16px;
    line-height: 1.8;
    color: var(--color-gray-500);
    margin-bottom: 16px;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.stat-item {
    text-align: center;
    padding: 32px 24px;
    background: var(--color-white);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-gray-200);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.stat-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.stat-number {
    font-size: 36px;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: -1px;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 14px;
    color: var(--color-gray-500);
    font-weight: 500;
}

.about-video {
    margin-top: 60px;
    text-align: center;
}

.about-video video,
.about-video iframe {
    max-width: 100%;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.about-video iframe {
    width: 100%;
    aspect-ratio: 16 / 9;
    height: auto;
}

/* ============================================
   Contact Section
   ============================================ */
.contact {
    padding: 100px 0;
    background: var(--color-white);
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.contact-card {
    text-align: center;
    padding: 40px 32px;
    background: var(--color-bg-alt);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-gray-200);
    transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

.contact-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: transparent;
}

.contact-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    background: var(--color-primary-light);
    color: var(--color-primary);
    border-radius: var(--radius-md);
    margin-bottom: 20px;
}

.contact-label {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-black);
    margin-bottom: 8px;
}

.contact-value {
    font-size: 15px;
    color: var(--color-gray-500);
}

/* Message Form */
.message-form {
    margin-top: 60px;
    max-width: 640px;
    margin-left: auto;
    margin-right: auto;
}

.message-form-title {
    font-size: 24px;
    font-weight: 600;
    color: var(--color-black);
    text-align: center;
    margin-bottom: 32px;
}

.message-form-inner {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 16px;
    font-size: 15px;
    font-family: var(--font-family);
    color: var(--color-dark);
    background: var(--color-bg-alt);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    outline: none;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--color-gray-400);
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.btn-submit {
    align-self: flex-start;
    padding: 12px 40px;
    font-size: 16px;
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: var(--color-dark);
    color: var(--color-gray-300);
    padding: 64px 0 32px;
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 48px;
    flex-wrap: wrap;
    gap: 32px;
}

.footer-logo {
    font-size: 22px;
    font-weight: 700;
    color: var(--color-white);
    letter-spacing: -0.5px;
}

.footer-tagline {
    font-size: 14px;
    color: var(--color-gray-400);
    margin-top: 6px;
}

.footer-links {
    display: flex;
    gap: 32px;
    flex-wrap: wrap;
}

.footer-link {
    font-size: 14px;
    color: var(--color-gray-400);
    transition: color var(--transition-fast);
}

.footer-link:hover {
    color: var(--color-white);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding-top: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
}

.copyright,
.icp {
    font-size: 13px;
    color: var(--color-gray-500);
}

.footer-compact {
    padding: 24px 0;
    margin-top: auto;
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 1024px) {
    .about-inner {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .about-stats {
        max-width: 600px;
        margin: 0 auto;
    }

    /* Product Detail - Tablet */
    .pd-layout {
        gap: 32px;
    }

    .pd-name {
        font-size: 24px;
    }
}

@media (max-width: 768px) {
    :root {
        --navbar-height: 64px;
        --container-padding: 20px;
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: var(--navbar-height);
        left: 0;
        right: 0;
        background: var(--color-white);
        flex-direction: column;
        align-items: stretch;
        padding: 16px var(--container-padding) 24px;
        gap: 4px;
        border-bottom: 1px solid var(--color-gray-200);
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: transform var(--transition-base), opacity var(--transition-base), visibility var(--transition-base);
        z-index: 999;
    }

    .nav-menu.open {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-link {
        padding: 12px 16px;
        font-size: 16px;
    }

    .hero-static {
        padding: 80px 0 100px;
    }

    .hero-static .hero-title,
    .carousel-slide-content .hero-title {
        font-size: 36px;
        letter-spacing: -1px;
    }

    .hero-static .hero-desc,
    .carousel-slide-content .hero-desc {
        font-size: 16px;
    }

    .hero-carousel {
        height: 420px;
    }

    .section-title {
        font-size: 30px;
    }

    .section-header {
        margin-bottom: 40px;
    }

    .products,
    .about,
    .contact {
        padding: 64px 0;
    }

    .products-grid {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
        gap: 16px;
    }

    .about-stats {
        grid-template-columns: 1fr;
    }

    .about-video {
        margin-top: 40px;
    }

    .contact-grid {
        grid-template-columns: 1fr;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .message-form {
        margin-top: 40px;
    }

    .footer-inner {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }

    /* Product Detail - Mobile */
    .pd-layout {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .pd-gallery {
        position: static;
    }

    .pd-name {
        font-size: 24px;
    }

    .lightbox-prev { left: 8px; }
    .lightbox-next { right: 8px; }

    .lightbox-prev,
    .lightbox-next {
        width: 40px;
        height: 40px;
        font-size: 24px;
    }
}

@media (max-width: 480px) {
    .hero-static .hero-title,
    .carousel-slide-content .hero-title {
        font-size: 28px;
    }

    .hero-carousel {
        height: 340px;
    }

    .carousel-arrow {
        width: 36px;
        height: 36px;
    }

    .carousel-prev { left: 12px; }
    .carousel-next { right: 12px; }

    .btn {
        width: 100%;
    }

    .stat-number {
        font-size: 28px;
    }

    /* Product Detail - Small Mobile */
    .pd-name {
        font-size: 20px;
    }

    .pd-spec-label {
        width: 64px;
        font-size: 13px;
    }

    .pd-spec-value {
        font-size: 14px;
    }

    .lightbox-close {
        top: -40px;
        right: 0;
        font-size: 24px;
    }

    .lightbox-counter {
        top: -36px;
        font-size: 13px;
    }
}

/* ============================================
   Accessibility
   ============================================ */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    html {
        scroll-behavior: auto;
    }
}

/* Focus styles */
a:focus-visible,
button:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.products-page {
    padding: 100px 0;
    background: var(--color-bg);
    min-height: 60vh;
}

/* Category Tabs */
.category-tabs {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
    margin-bottom: 48px;
    padding: 0 16px;
}

.category-tab {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    font-size: 15px;
    font-weight: 500;
    color: var(--color-gray-700);
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
}

.category-tab:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    box-shadow: var(--shadow-sm);
}

.category-tab.active {
    background: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
    box-shadow: 0 4px 16px rgba(232, 106, 44, 0.3);
}

/* Product Card Simple */
.product-card-simple {
    position: relative;
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
    cursor: pointer;
}

.product-card-simple:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-hover);
    border-color: transparent;
}

.product-image-simple {
    position: relative;
    width: 100%;
    aspect-ratio: 1 / 1;
    overflow: hidden;
    background: var(--color-gray-100);
}

.product-image-simple img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.product-no-image {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-gray-100);
    color: var(--color-gray-400);
    font-size: 14px;
    text-align: center;
}

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

.product-info-simple {
    padding: 20px 16px;
    text-align: center;
}

.product-name-simple {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-black);
    line-height: 1.4;
}

/* Small loading spinner */
.spinner-small {
    width: 24px;
    height: 24px;
    border: 2px solid var(--color-gray-200);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.loading-state-small {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
    color: var(--color-gray-400);
}

/* ============================================
   Product Detail Page
   ============================================ */
.pd-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: start;
}

/* Gallery */
.pd-gallery {
    position: sticky;
    top: calc(var(--navbar-height) + 24px);
}

.pd-main {
    position: relative;
    width: 100%;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--color-gray-100);
}

.pd-main-img {
    display: block;
    width: 100%;
    aspect-ratio: 1 / 1;
    object-fit: cover;
    cursor: pointer;
    transition: transform var(--transition-base);
}

.pd-main-img:hover {
    transform: scale(1.03);
}

.pd-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 10;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.85);
    border-radius: 50%;
    font-size: 22px;
    color: var(--color-gray-700);
    cursor: pointer;
    box-shadow: var(--shadow-md);
    border: none;
    transition: background var(--transition-fast), transform var(--transition-fast);
    user-select: none;
}

.pd-arrow:hover {
    background: var(--color-white);
    transform: translateY(-50%) scale(1.08);
}

.pd-arrow-prev { left: 12px; }
.pd-arrow-next { right: 12px; }

.pd-thumbs {
    display: flex;
    gap: 10px;
    margin-top: 12px;
    overflow-x: auto;
}

.pd-thumb {
    flex: 0 0 auto;
    width: 72px;
    height: 72px;
    border-radius: var(--radius-sm);
    overflow: hidden;
    border: 2px solid transparent;
    cursor: pointer;
    opacity: 0.6;
    transition: border-color var(--transition-fast), opacity var(--transition-fast);
}

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

.pd-thumb.active {
    border-color: var(--color-primary);
    opacity: 1;
}

.pd-thumb:hover {
    opacity: 0.9;
}

/* Product Info */
.pd-info {
    padding-top: 8px;
}

.pd-name {
    font-size: 28px;
    font-weight: 700;
    color: var(--color-black);
    letter-spacing: -0.5px;
    margin-bottom: 24px;
    line-height: 1.3;
}

.pd-specs {
    margin-bottom: 32px;
}

.pd-spec-row {
    display: flex;
    align-items: baseline;
    padding: 14px 0;
    border-bottom: 1px solid var(--color-gray-200);
}

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

.pd-spec-label {
    width: 80px;
    flex-shrink: 0;
    font-size: 14px;
    font-weight: 500;
    color: var(--color-gray-400);
}

.pd-spec-value {
    font-size: 15px;
    color: var(--color-gray-900);
}

.pd-desc {
    padding-top: 8px;
}

.pd-desc-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-black);
    margin-bottom: 12px;
}

.pd-desc-text {
    font-size: 15px;
    line-height: 1.8;
    color: var(--color-gray-500);
}

/* Lightbox */
.lightbox {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
}

.lightbox-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.9);
}

.lightbox-content {
    position: relative;
    width: 100%;
    max-width: 900px;
    max-height: 90vh;
    z-index: 1;
}

.lightbox-close {
    position: absolute;
    top: -48px;
    right: 0;
    z-index: 10;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: rgba(255, 255, 255, 0.8);
    background: none;
    border: none;
    cursor: pointer;
    transition: color var(--transition-fast);
}

.lightbox-close:hover {
    color: var(--color-white);
}

.lightbox-counter {
    position: absolute;
    top: -42px;
    left: 0;
    z-index: 10;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    font-weight: 500;
}

.lightbox-swiper {
    width: 100%;
    border-radius: var(--radius-md);
    overflow: hidden;
}

.lightbox-img-wrap {
    display: flex;
    align-items: center;
    justify-content: center;
    max-height: 85vh;
}

.lightbox-img-wrap img {
    max-width: 100%;
    max-height: 85vh;
    object-fit: contain;
}

.lightbox-prev,
.lightbox-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 10;
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    color: rgba(255, 255, 255, 0.8);
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    cursor: pointer;
    transition: background var(--transition-fast), color var(--transition-fast);
    user-select: none;
}

.lightbox-prev:hover,
.lightbox-next:hover {
    background: rgba(255, 255, 255, 0.2);
    color: var(--color-white);
}

.lightbox-prev { left: -68px; }
.lightbox-next { right: -68px; }

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