/* ========================================
   GadgetHub - Main Stylesheet
   Dark Tech Theme
   ======================================== */

/* CSS Variables */
:root {
    --primary-bg: #0a0f1e;
    --surface-bg: #111827;
    --card-bg: #1a1f2e;
    --border-color: rgba(255, 255, 255, 0.08);
    --text-primary: #ffffff;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    --accent-orange: #FF6B2B;
    --brand-blue: #0F52BA;
    --brand-blue-dark: #0A3D8F;
    --success-color: #10b981;
    --error-color: #ef4444;
    --warning-color: #f59e0b;
    --gradient-primary: linear-gradient(135deg, #0F52BA 0%, #0A3D8F 100%);
    --gradient-orange: linear-gradient(135deg, #FF6B2B 0%, #e55a1b 100%);
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.5);
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --transition: all 0.2s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background-color: var(--primary-bg);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

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

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

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--primary-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--brand-blue);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-orange);
}

/* Page Loader */
.page-loader {
    position: fixed;
    inset: 0;
    background: var(--primary-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s, visibility 0.5s;
}

.page-loader.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader-content {
    text-align: center;
}

.loader-logo {
    font-family: 'DM Serif Display', serif;
    font-size: 2.5rem;
    color: var(--accent-orange);
    margin-bottom: 1.5rem;
}

.loader-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent-orange);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

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

@media (min-width: 768px) {
    .container {
        padding: 0 1.5rem;
    }
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    transition: var(--transition);
}

.header.scrolled {
    background: rgba(17, 24, 39, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-md);
}

.header-top {
    background: var(--brand-blue);
    padding: 0.5rem 0;
    font-size: 0.875rem;
}

.header-top .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.top-bar-text {
    color: rgba(255, 255, 255, 0.9);
}

.top-link {
    color: rgba(255, 255, 255, 0.9);
    margin-left: 1.5rem;
    transition: var(--transition);
}

.top-link:hover {
    color: white;
}

.header-main {
    padding: 1rem 0;
    background: rgba(17, 24, 39, 0.8);
    backdrop-filter: blur(10px);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
}

/* Logo */
.logo {
    flex-shrink: 0;
}

.logo-text {
    font-family: 'DM Serif Display', serif;
    font-size: 1.75rem;
    font-weight: 400;
    color: var(--accent-orange);
    letter-spacing: -0.02em;
}

/* Search */
.header-search {
    flex: 1;
    max-width: 500px;
}

.search-form {
    display: flex;
    position: relative;
}

.search-form input {
    width: 100%;
    padding: 0.75rem 3rem 0.75rem 1rem;
    background: var(--surface-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.9375rem;
    transition: var(--transition);
}

.search-form input:focus {
    outline: none;
    border-color: var(--brand-blue);
}

.search-form input::placeholder {
    color: var(--text-muted);
}

.search-btn {
    position: absolute;
    right: 0.5rem;
    top: 50%;
    transform: translateY(-50%);
    background: var(--gradient-primary);
    border: none;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: white;
    transition: var(--transition);
}

.search-btn:hover {
    filter: brightness(1.1);
}

/* Header Actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.header-action {
    position: relative;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    background: var(--surface-bg);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    transition: var(--transition);
}

.header-action:hover {
    background: var(--brand-blue);
    border-color: var(--brand-blue);
}

.action-badge {
    position: absolute;
    top: -4px;
    right: -4px;
    min-width: 20px;
    height: 20px;
    padding: 0 6px;
    background: var(--accent-orange);
    border-radius: 10px;
    font-size: 0.75rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition);
}

/* Main Navigation */
.main-nav {
    background: var(--surface-bg);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-item {
    position: relative;
}

.nav-link {
    display: block;
    padding: 1rem 0;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition);
}

.nav-link:hover,
.nav-item:hover .nav-link {
    color: var(--accent-orange);
}

/* Dropdown Menu */
.has-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 200px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 0.5rem 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition);
    z-index: 100;
}

.dropdown-menu li a {
    display: block;
    padding: 0.75rem 1.25rem;
    font-size: 0.9375rem;
    color: var(--text-secondary);
    transition: var(--transition);
}

.dropdown-menu li a:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--accent-orange);
}

/* Toast Container */
.toast-container {
    position: fixed;
    top: 100px;
    right: 1rem;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.toast {
    padding: 1rem 1.25rem;
    border-radius: var(--radius-md);
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    font-size: 0.9375rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    animation: slideIn 0.3s ease;
    box-shadow: var(--shadow-lg);
}

.toast.success {
    border-left: 4px solid var(--success-color);
}

.toast.error {
    border-left: 4px solid var(--error-color);
}

.toast.hiding {
    animation: slideOut 0.3s ease forwards;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideOut {
    from {
        transform: translateX(0);
        opacity: 1;
    }
    to {
        transform: translateX(100%);
        opacity: 0;
    }
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-size: 0.9375rem;
    font-weight: 500;
    font-family: inherit;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
}

.btn-primary:hover {
    filter: brightness(1.1);
}

.btn-primary:active {
    transform: scale(0.97);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--brand-blue);
}

.btn-orange {
    background: var(--gradient-orange);
    color: white;
}

.btn-orange:hover {
    filter: brightness(1.1);
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1rem;
}

.btn-block {
    width: 100%;
}

/* Section Spacing */
.section-padding {
    padding: 4rem 0;
}

.bg-light {
    background: var(--surface-bg);
}

.bg-gradient {
    background: linear-gradient(135deg, var(--brand-blue-dark) 0%, var(--primary-bg) 100%);
}

/* Hero Section */
.hero-section {
    position: relative;
    height: 600px;
    margin-top: 130px;
}

.hero-slider {
    position: relative;
    height: 100%;
    overflow: hidden;
}

.hero-slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.hero-slide.active {
    opacity: 1;
    visibility: visible;
}

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

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(10, 15, 30, 0.95) 0%, rgba(10, 15, 30, 0.7) 50%, rgba(10, 15, 30, 0.4) 100%);
}

.hero-content {
    position: relative;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    max-width: 600px;
    padding: 2rem 0;
}

.hero-subtitle {
    font-size: 1rem;
    font-weight: 500;
    color: var(--accent-orange);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 1rem;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.hero-title {
    font-family: 'DM Serif Display', serif;
    font-size: 3.5rem;
    font-weight: 400;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease 0.1s, transform 0.6s ease 0.1s;
}

.hero-slide.active .hero-subtitle,
.hero-slide.active .hero-title,
.hero-slide.active .animate-in {
    opacity: 1;
    transform: translateY(0);
}

/* Slider Controls */
.slider-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    z-index: 10;
}

.slider-btn:hover {
    background: var(--accent-orange);
    border-color: var(--accent-orange);
}

.slider-prev {
    left: 2rem;
}

.slider-next {
    right: 2rem;
}

.slider-dots {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 0.75rem;
    z-index: 10;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    border: none;
    cursor: pointer;
    transition: var(--transition);
}

.dot.active {
    background: var(--accent-orange);
}

/* Section Header */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.section-title {
    font-family: 'DM Serif Display', serif;
    font-size: 2rem;
    font-weight: 400;
}

.section-title.text-white {
    color: white;
}

/* Categories Grid */
.categories-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

@media (min-width: 768px) {
    .categories-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 1.5rem;
    }
}

@media (min-width: 1024px) {
    .categories-grid {
        grid-template-columns: repeat(6, 1fr);
    }
}

.category-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 1.5rem;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.category-card:hover {
    transform: translateY(-4px);
    border-color: var(--brand-blue);
    box-shadow: var(--shadow-lg);
}

.category-icon {
    width: 64px;
    height: 64px;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--surface-bg);
    border-radius: var(--radius-md);
    color: var(--accent-orange);
}

.category-icon img {
    width: 40px;
    height: 40px;
    object-fit: contain;
}

.category-name {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.category-count {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* Flash Deals Countdown */
.countdown-timer {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: rgba(255, 255, 255, 0.1);
    padding: 0.75rem 1.25rem;
    border-radius: var(--radius-md);
}

.countdown-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.countdown-digits {
    display: flex;
    gap: 0.5rem;
    font-family: 'DM Mono', monospace;
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--accent-orange);
}

.digit {
    min-width: 40px;
    text-align: center;
    background: rgba(0, 0, 0, 0.3);
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
}

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

@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: 1.5rem;
    }
}

.products-scroll {
    display: flex;
    gap: 1rem;
    overflow-x: auto;
    padding-bottom: 1rem;
    scroll-snap-type: x mandatory;
}

.products-scroll .product-card {
    flex: 0 0 280px;
    scroll-snap-align: start;
}

/* Product Card */
.product-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: var(--transition);
}

.product-card:hover {
    transform: translateY(-4px);
    border-color: rgba(255, 255, 255, 0.15);
    box-shadow: var(--shadow-lg);
}

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

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

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

.discount-badge {
    position: absolute;
    top: 0.75rem;
    left: 0.75rem;
    background: var(--accent-orange);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
}

.new-badge {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    background: var(--success-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
}

.deal-badge {
    position: absolute;
    top: 0.75rem;
    left: 0.75rem;
    background: #dc2626;
    color: white;
    padding: 0.35rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 700;
}

.wishlist-btn-small {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    width: 36px;
    height: 36px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text-secondary);
    transition: var(--transition);
    z-index: 5;
}

.wishlist-btn-small:hover,
.wishlist-btn-small.active {
    background: var(--accent-orange);
    border-color: var(--accent-orange);
    color: white;
}

.deal-progress {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 30px;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    padding: 0 0.75rem;
}

.progress-bar {
    position: absolute;
    bottom: 0;
    left: 0;
    height: 3px;
    background: var(--accent-orange);
    transition: width 0.3s ease;
}

.progress-text {
    font-size: 0.75rem;
    color: white;
}

.product-info {
    padding: 1rem;
}

.product-category {
    font-size: 0.75rem;
    color: var(--brand-blue);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.25rem;
}

.product-name {
    font-size: 0.9375rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.product-name a:hover {
    color: var(--accent-orange);
}

.product-price {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
}

.sale-price {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--accent-orange);
}

.regular-price {
    font-size: 0.875rem;
    color: var(--text-muted);
    text-decoration: line-through;
}

.product-card .btn {
    width: 100%;
}

/* Trust Section */
.trust-section {
    background: var(--surface-bg);
}

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

@media (min-width: 768px) {
    .trust-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.trust-item {
    text-align: center;
}

.trust-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 1rem;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.trust-item h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.trust-item p {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Footer */
.footer {
    background: var(--surface-bg);
    border-top: 1px solid var(--border-color);
    padding-top: 4rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-bottom: 3rem;
}

@media (min-width: 768px) {
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .footer-grid {
        grid-template-columns: 2fr 1fr 1fr 1.5fr;
    }
}

.footer-logo {
    font-family: 'DM Serif Display', serif;
    font-size: 1.75rem;
    color: var(--accent-orange);
    display: block;
    margin-bottom: 1rem;
}

.footer-desc {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    margin-bottom: 1.5rem;
    max-width: 300px;
}

.footer-contact p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.footer-contact strong {
    color: var(--text-primary);
}

.footer-social {
    display: flex;
    gap: 0.75rem;
    margin-top: 1.5rem;
}

.social-link {
    width: 40px;
    height: 40px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: var(--transition);
}

.social-link:hover {
    background: var(--brand-blue);
    border-color: var(--brand-blue);
    color: white;
}

.footer-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1.25rem;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--accent-orange);
}

.footer-newsletter-desc {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    margin-bottom: 1rem;
}

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

.newsletter-form input {
    flex: 1;
    padding: 0.75rem 1rem;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.9375rem;
}

.newsletter-form input:focus {
    outline: none;
    border-color: var(--brand-blue);
}

.newsletter-form input::placeholder {
    color: var(--text-muted);
}

.trust-badges {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

.trust-badge {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding: 1.5rem 0;
    text-align: center;
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* Scroll to Top Button */
.scroll-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 48px;
    height: 48px;
    background: var(--gradient-primary);
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: white;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition);
    z-index: 99;
}

.scroll-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.scroll-top:hover {
    filter: brightness(1.1);
}