/* ===== AVENTI APPAREL - Premium Design System ===== */

/* === CSS Reset & Base === */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Color Palette - Neutral with Sophistication */
    --color-primary: #2c2c2c;
    --color-secondary: #6b6b6b;
    --color-accent: #b8976a;
    --color-accent-light: #d4ba8e;
    
    --color-bg: #ffffff;
    --color-bg-secondary: #f8f8f8;
    --color-bg-tertiary: #eeeeee;
    
    --color-text-primary: #1a1a1a;
    --color-text-secondary: #4a4a4a;
    --color-text-light: #7a7a7a;
    
    --color-border: #e0e0e0;
    --color-border-light: #f0f0f0;
    
    --color-success: #4a7c59;
    --color-error: #c84b31;
    --color-warning: #d4a574;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    
    /* Spacing System */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-2xl: 4rem;
    --space-3xl: 6rem;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Container Widths */
    --container-sm: 640px;
    --container-md: 768px;
    --container-lg: 1024px;
    --container-xl: 1280px;
    --container-2xl: 1536px;
}

/* === Typography === */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

body {
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    background-color: var(--color-bg);
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: var(--space-md);
    color: var(--color-text-primary);
}

h1 { font-size: 3rem; font-weight: 700; letter-spacing: -0.02em; }
h2 { font-size: 2.25rem; font-weight: 600; letter-spacing: -0.01em; }
h3 { font-size: 1.875rem; font-weight: 600; }
h4 { font-size: 1.5rem; font-weight: 500; }
h5 { font-size: 1.25rem; font-weight: 500; }
h6 { font-size: 1rem; font-weight: 500; }

p {
    margin-bottom: var(--space-sm);
    color: var(--color-text-secondary);
}

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

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

/* === Layout === */
.container {
    width: 100%;
    max-width: var(--container-xl);
    margin: 0 auto;
    padding: 0 var(--space-md);
}

.container-sm { max-width: var(--container-sm); }
.container-md { max-width: var(--container-md); }
.container-lg { max-width: var(--container-lg); }
.container-xl { max-width: var(--container-xl); }

/* === Header / Navigation === */
header {
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border-light);
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.95);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-md) 0;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    text-transform: uppercase;
    color: var(--color-primary);
}

.nav-menu {
    display: flex;
    gap: var(--space-lg);
    list-style: none;
    align-items: center;
}

.nav-menu a {
    font-weight: 500;
    font-size: 0.95rem;
    letter-spacing: 0.01em;
    transition: all var(--transition-fast);
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-accent);
    transition: width var(--transition-base);
}

.nav-menu a:hover::after {
    width: 100%;
}

.cart-icon {
    position: relative;
    cursor: pointer;
    padding: var(--space-xs);
}

.cart-count {
    position: absolute;
    top: -4px;
    right: -4px;
    background: var(--color-accent);
    color: white;
    font-size: 0.75rem;
    font-weight: 600;
    width: 20px;
    height: 20px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    animation: cartBounce var(--transition-base);
}

@keyframes cartBounce {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.2); }
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    cursor: pointer;
    padding: var(--space-xs);
}

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

/* === Hero Section === */
.hero {
    min-height: 85vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--color-bg) 0%, var(--color-bg-secondary) 100%);
    position: relative;
    overflow: hidden;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
    align-items: center;
    z-index: 1;
}

.hero-text h1 {
    font-size: 3.5rem;
    margin-bottom: var(--space-md);
    line-height: 1.1;
}

.hero-text .subheadline {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-xl);
    line-height: 1.6;
}

.hero-image {
    position: relative;
    animation: fadeInUp 0.8s ease-out;
}

.hero-image img {
    width: 100%;
    height: auto;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* === Buttons === */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-lg);
    font-weight: 600;
    font-size: 1rem;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    text-align: center;
    justify-content: center;
}

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

.btn-primary:hover {
    background: var(--color-accent);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

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

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

.btn-accent:hover {
    background: var(--color-accent-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-large {
    padding: var(--space-md) var(--space-xl);
    font-size: 1.125rem;
}

.btn-small {
    padding: var(--space-xs) var(--space-md);
    font-size: 0.875rem;
}

/* === Product Grid === */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--space-lg);
    padding: var(--space-xl) 0;
}

.product-card {
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-base);
    border: 1px solid var(--color-border-light);
    cursor: pointer;
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-accent);
}

.product-image {
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
    background: var(--color-bg-secondary);
    transition: transform var(--transition-slow);
}

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

.product-info {
    padding: var(--space-md);
}

.product-category {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-accent);
    font-weight: 600;
    margin-bottom: var(--space-xs);
}

.product-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--space-xs);
    color: var(--color-text-primary);
}

.product-price {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-accent);
}

.product-description-short {
    font-size: 0.875rem;
    color: var(--color-text-light);
    margin: var(--space-xs) 0;
    line-height: 1.5;
}

/* === Filters === */
.filters {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
    padding: var(--space-lg) 0;
    align-items: center;
}

.filter-group {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.filter-btn {
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-full);
    border: 1px solid var(--color-border);
    background: var(--color-bg);
    color: var(--color-text-secondary);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 0.875rem;
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

/* === Forms === */
.form-group {
    margin-bottom: var(--space-md);
}

label {
    display: block;
    margin-bottom: var(--space-xs);
    font-weight: 500;
    color: var(--color-text-primary);
    font-size: 0.95rem;
}

input[type="text"],
input[type="email"],
input[type="tel"],
input[type="number"],
select,
textarea {
    width: 100%;
    padding: var(--space-sm);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: all var(--transition-fast);
    background: var(--color-bg);
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(184, 151, 106, 0.1);
}

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

/* === Cart === */
.cart-item {
    display: flex;
    gap: var(--space-md);
    padding: var(--space-md);
    border-bottom: 1px solid var(--color-border-light);
    background: var(--color-bg);
    transition: background var(--transition-fast);
}

.cart-item:hover {
    background: var(--color-bg-secondary);
}

.cart-item-image {
    width: 100px;
    height: 100px;
    object-fit: cover;
    border-radius: var(--radius-md);
}

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

.cart-item-title {
    font-weight: 600;
    margin-bottom: var(--space-xs);
}

.cart-item-meta {
    font-size: 0.875rem;
    color: var(--color-text-light);
}

.quantity-controls {
    display: flex;
    gap: var(--space-sm);
    align-items: center;
    margin-top: var(--space-xs);
}

.quantity-btn {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--color-border);
    background: var(--color-bg);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-weight: 600;
}

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

.quantity-display {
    min-width: 32px;
    text-align: center;
    font-weight: 600;
}

/* === Footer === */
footer {
    background: var(--color-primary);
    color: white;
    padding: var(--space-2xl) 0 var(--space-md);
    margin-top: var(--space-3xl);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-2xl);
    margin-bottom: var(--space-xl);
}

.footer-section h4 {
    margin-bottom: var(--space-md);
    color: white;
}

.footer-section ul {
    list-style: none;
}

.footer-section li {
    margin-bottom: var(--space-sm);
}

.footer-section a {
    color: rgba(255, 255, 255, 0.8);
    transition: color var(--transition-fast);
}

.footer-section a:hover {
    color: var(--color-accent-light);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--space-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.875rem;
}

/* === Utility Classes === */
.text-center { text-align: center; }
.text-right { text-align: right; }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }
.py-sm { padding-top: var(--space-sm); padding-bottom: var(--space-sm); }
.py-md { padding-top: var(--space-md); padding-bottom: var(--space-md); }
.py-lg { padding-top: var(--space-lg); padding-bottom: var(--space-lg); }
.py-xl { padding-top: var(--space-xl); padding-bottom: var(--space-xl); }

.section {
    padding: var(--space-2xl) 0;
}

.section-title {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.badge-success { background: var(--color-success); color: white; }
.badge-error { background: var(--color-error); color: white; }
.badge-warning { background: var(--color-warning); color: white; }

/* === Responsive Design === */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-text h1 {
        font-size: 2.5rem;
    }
}

@media (max-width: 768px) {
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    h3 { font-size: 1.5rem; }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        right: -100%;
        flex-direction: column;
        background: white;
        width: 100%;
        padding: var(--space-xl);
        box-shadow: var(--shadow-lg);
        transition: right var(--transition-base);
        align-items: flex-start;
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .product-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        gap: var(--space-md);
    }
    
    .hero {
        min-height: 60vh;
    }
    
    .hero-text h1 {
        font-size: 1.875rem;
    }
    
    .hero-text .subheadline {
        font-size: 1rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--space-sm);
    }
    
    .product-grid {
        grid-template-columns: 1fr;
    }
    
    .btn-large {
        width: 100%;
    }
}

/* === Loading States === */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
}

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

/* === Animations === */
.fade-in {
    animation: fadeIn 0.5s ease-in;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.slide-up {
    animation: slideUp 0.6s ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}