/* ========================================
   ShopMyLine - Modern E-commerce Styles
   Clean, Professional Design
   ======================================== */

:root {
    --primary: #0f172a;
    --primary-light: #1e293b;
    --accent: #3b82f6;
    --accent-hover: #2563eb;
    --text: #1e293b;
    --text-secondary: #64748b;
    --text-light: #94a3b8;
    --bg: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --border: #e2e8f0;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --radius: 8px;
    --radius-lg: 12px;
    --transition: all 0.2s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
}

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

ul { list-style: none; }
img { max-width: 100%; height: auto; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, textarea, select { font-family: inherit; font-size: inherit; }

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    font-size: 14px;
    font-weight: 500;
    border-radius: var(--radius);
    transition: var(--transition);
    cursor: pointer;
}

.btn-primary {
    background: var(--primary);
    color: #fff;
}

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

.btn-outline-light {
    background: transparent;
    color: #fff;
    border: 1px solid rgba(255,255,255,0.3);
}

.btn-outline-light:hover {
    background: rgba(255,255,255,0.1);
    border-color: rgba(255,255,255,0.5);
}

.btn-block { width: 100%; }

.icon-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius);
    color: var(--text);
    transition: var(--transition);
}

.icon-btn:hover {
    background: var(--bg-tertiary);
}

/* ========================================
   Header
   ======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

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

.logo-text {
    font-size: 20px;
    font-weight: 700;
    letter-spacing: -0.5px;
    color: var(--primary);
}

.nav-list {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-list a {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    padding: 8px 0;
    position: relative;
}

.nav-list a:hover,
.nav-list a.active {
    color: var(--text);
}

.nav-list a.active::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.cart-btn {
    position: relative;
}

.cart-count {
    position: absolute;
    top: 4px;
    right: 4px;
    width: 16px;
    height: 16px;
    background: var(--danger);
    color: #fff;
    font-size: 10px;
    font-weight: 600;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
}

.menu-toggle span {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--text);
    transition: var(--transition);
}

/* ========================================
   Hero
   ======================================== */
.hero {
    position: relative;
    min-height: 600px;
    display: flex;
    align-items: center;
    margin-top: 72px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
}

.hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to right, rgba(0,0,0,0.7) 0%, rgba(0,0,0,0.3) 100%);
}

.hero .container {
    position: relative;
    z-index: 1;
}

.hero-content {
    max-width: 560px;
    color: #fff;
}

.hero-content h1 {
    font-size: 48px;
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -1px;
    margin-bottom: 16px;
}

.hero-content p {
    font-size: 18px;
    opacity: 0.9;
    margin-bottom: 32px;
}

.hero-buttons {
    display: flex;
    gap: 12px;
}

/* ========================================
   Features
   ======================================== */
.features {
    padding: 80px 0;
    background: var(--bg);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.feature-card {
    text-align: center;
    padding: 32px 24px;
    border-radius: var(--radius-lg);
    background: var(--bg-secondary);
    transition: var(--transition);
}

.feature-card:hover {
    background: var(--bg-tertiary);
}

.feature-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    margin-bottom: 16px;
    color: var(--primary);
}

.feature-card h3 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 4px;
}

.feature-card p {
    font-size: 13px;
    color: var(--text-secondary);
}

/* ========================================
   Section Header
   ======================================== */
.section-header {
    text-align: center;
    margin-bottom: 48px;
}

.section-subtitle {
    display: inline-block;
    font-size: 13px;
    font-weight: 500;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 8px;
}

.section-header h2 {
    font-size: 32px;
    font-weight: 700;
    letter-spacing: -0.5px;
}

/* ========================================
   Products
   ======================================== */
.products {
    padding: 80px 0;
    background: var(--bg-secondary);
}

.products-filter {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 40px;
}

.filter-btn {
    padding: 10px 20px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 100px;
    transition: var(--transition);
}

.filter-btn:hover {
    border-color: var(--text-secondary);
    color: var(--text);
}

.filter-btn.active {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.product-card {
    background: var(--bg);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
}

.product-card:hover {
    box-shadow: var(--shadow-lg);
}

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

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

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

.product-badge {
    position: absolute;
    top: 12px;
    left: 12px;
    padding: 6px 12px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: #fff;
    background: var(--primary);
    border-radius: 100px;
}

.product-badge.badge-sale {
    background: var(--danger);
}

.product-info {
    padding: 20px;
}

.product-category {
    font-size: 11px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-light);
    margin-bottom: 4px;
}

.product-name {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 8px;
    line-height: 1.4;
}

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

.product-rating {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
}

.stars {
    display: flex;
    gap: 2px;
    color: var(--warning);
}

.rating-count {
    font-size: 12px;
    color: var(--text-light);
}

.product-price {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 16px;
}

.current-price {
    font-size: 18px;
    font-weight: 700;
}

.original-price {
    font-size: 14px;
    color: var(--text-light);
    text-decoration: line-through;
}

.add-to-cart-btn {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text);
    background: var(--bg-tertiary);
    border-radius: var(--radius);
    transition: var(--transition);
}

.add-to-cart-btn:hover {
    background: var(--primary);
    color: #fff;
}

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

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

.about-image {
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.about-image img {
    width: 100%;
    height: 500px;
    object-fit: cover;
}

.about-content h2 {
    font-size: 36px;
    font-weight: 700;
    letter-spacing: -0.5px;
    margin-bottom: 24px;
}

.about-content p {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.7;
}

.about-list {
    margin-top: 24px;
}

.about-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
    font-size: 15px;
    font-weight: 500;
    color: var(--text);
}

.about-list svg {
    color: var(--success);
    flex-shrink: 0;
}

/* ========================================
   Newsletter
   ======================================== */
.newsletter {
    padding: 80px 0;
    background: var(--primary);
}

.newsletter-content {
    max-width: 500px;
    margin: 0 auto;
    text-align: center;
    color: #fff;
}

.newsletter .section-subtitle {
    color: rgba(255,255,255,0.7);
}

.newsletter h2 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 12px;
}

.newsletter p {
    opacity: 0.8;
    margin-bottom: 32px;
}

.newsletter-form {
    display: flex;
    gap: 12px;
}

.newsletter-form input {
    flex: 1;
    padding: 14px 18px;
    font-size: 14px;
    border: none;
    border-radius: var(--radius);
    background: rgba(255,255,255,0.1);
    color: #fff;
    outline: none;
}

.newsletter-form input::placeholder {
    color: rgba(255,255,255,0.5);
}

.newsletter-form input:focus {
    background: rgba(255,255,255,0.15);
}

.newsletter-form .btn-primary {
    background: #fff;
    color: var(--primary);
}

.newsletter-form .btn-primary:hover {
    background: var(--bg-secondary);
}

/* ========================================
   Contact
   ======================================== */
.contact {
    padding: 80px 0;
    background: var(--bg-secondary);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 60px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.contact-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: var(--bg);
    border-radius: var(--radius);
    color: var(--primary);
    flex-shrink: 0;
}

.contact-item h4 {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 4px;
}

.contact-item p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.contact-form {
    background: var(--bg);
    padding: 32px;
    border-radius: var(--radius-lg);
}

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

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    font-size: 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg);
    outline: none;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--primary);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* ========================================
   Footer
   ======================================== */
.footer {
    background: var(--primary);
    color: #fff;
    padding: 60px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 48px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-brand p {
    margin: 16px 0 24px;
    font-size: 14px;
    color: rgba(255,255,255,0.7);
    line-height: 1.7;
}

.social-links {
    display: flex;
    gap: 12px;
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.1);
    border-radius: var(--radius);
    color: #fff;
    transition: var(--transition);
}

.social-links a:hover {
    background: rgba(255,255,255,0.2);
}

.footer-links h4 {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 20px;
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    font-size: 14px;
    color: rgba(255,255,255,0.7);
}

.footer-links a:hover {
    color: #fff;
}

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 24px 0;
}

.footer-bottom p {
    font-size: 13px;
    color: rgba(255,255,255,0.5);
}

.payment-methods {
    display: flex;
    align-items: center;
    gap: 12px;
}

.payment-methods span {
    font-size: 13px;
    color: rgba(255,255,255,0.5);
}

.payment-icons {
    display: flex;
    gap: 8px;
}

/* ========================================
   Cart Sidebar
   ======================================== */
.cart-sidebar {
    position: fixed;
    top: 0;
    right: -400px;
    width: 400px;
    height: 100vh;
    background: var(--bg);
    box-shadow: var(--shadow-lg);
    z-index: 2000;
    display: flex;
    flex-direction: column;
    transition: right 0.3s ease;
}

.cart-sidebar.open {
    right: 0;
}

.cart-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border);
}

.cart-header h3 {
    font-size: 18px;
    font-weight: 600;
}

.close-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius);
    color: var(--text-secondary);
    transition: var(--transition);
}

.close-btn:hover {
    background: var(--bg-tertiary);
    color: var(--text);
}

.cart-items {
    flex: 1;
    overflow-y: auto;
    padding: 24px;
}

.empty-cart {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--text-light);
    text-align: center;
}

.empty-cart svg {
    margin-bottom: 16px;
}

.empty-cart p {
    font-size: 14px;
}

.cart-item {
    display: flex;
    gap: 16px;
    padding: 16px 0;
    border-bottom: 1px solid var(--border);
}

.cart-item-image {
    width: 80px;
    height: 80px;
    background: var(--bg-tertiary);
    border-radius: var(--radius);
    overflow: hidden;
}

.cart-item-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.cart-item-details {
    flex: 1;
}

.cart-item-name {
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 4px;
}

.cart-item-price {
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
}

.cart-item-quantity {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 8px;
}

.qty-btn {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border-radius: var(--radius);
    font-size: 14px;
    transition: var(--transition);
}

.qty-btn:hover {
    background: var(--border);
}

.remove-item {
    color: var(--text-light);
    transition: var(--transition);
}

.remove-item:hover {
    color: var(--danger);
}

.cart-footer {
    padding: 24px;
    border-top: 1px solid var(--border);
}

.cart-total {
    display: flex;
    justify-content: space-between;
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 16px;
}

.cart-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 1500;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.cart-overlay.open {
    opacity: 1;
    visibility: visible;
}

/* ========================================
   Toast
   ======================================== */
.toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    padding: 16px 24px;
    background: var(--primary);
    color: #fff;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    font-size: 14px;
    font-weight: 500;
    z-index: 3000;
    transform: translateY(100px);
    opacity: 0;
    transition: var(--transition);
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 1024px) {
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .products-grid { grid-template-columns: repeat(3, 1fr); }
    .about-grid { grid-template-columns: 1fr; gap: 40px; }
    .about-image { order: -1; }
    .about-image img { height: 400px; }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .nav { display: none; }
    .menu-toggle { display: flex; }

    .hero { min-height: 500px; }
    .hero-content h1 { font-size: 36px; }
    .hero-buttons { flex-direction: column; }

    .features-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
    .feature-card { padding: 24px 16px; }

    .products-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }

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

    .newsletter-form { flex-direction: column; }

    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .footer-bottom { flex-direction: column; gap: 16px; text-align: center; }

    .cart-sidebar { width: 100%; right: -100%; }
}

@media (max-width: 480px) {
    .container { padding: 0 16px; }
    .hero-content h1 { font-size: 28px; }
    .section-header h2 { font-size: 24px; }
    .products-grid { grid-template-columns: 1fr; }
    .features-grid { grid-template-columns: 1fr; }
}

/* ========================================
   Nav Mobile
   ======================================== */
.nav.open {
    display: block;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    padding: 16px 24px;
}

.nav.open .nav-list {
    flex-direction: column;
    gap: 0;
}

.nav.open .nav-list a {
    display: block;
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
}

.nav.open .nav-list li:last-child a {
    border-bottom: none;
}