/* BikeLife E-commerce - Main Stylesheet */

/* ===== CSS VARIABLES ===== */
:root {
    /* Colors */
    --primary-color: #00ff88;
    --secondary-color: #ff3366;
    --dark-bg: #0a0a0a;
    --dark-bg-secondary: #151515;
    --dark-bg-tertiary: #1f1f1f;
    --text-primary: #ffffff;
    --text-secondary: #b3b3b3;
    --text-muted: #666666;
    --border-color: #2a2a2a;
    --success: #00ff88;
    --warning: #ffaa00;
    --error: #ff3366;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-heading: 'Bebas Neue', 'Arial Black', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 4rem;
    
    /* Border radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px 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);
    --shadow-glow: 0 0 20px rgba(0, 255, 136, 0.3);
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ===== RESET & BASE STYLES ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background-color: var(--dark-bg);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

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

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

input, textarea, select {
    font-family: inherit;
    font-size: inherit;
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    margin-bottom: var(--spacing-md);
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: var(--spacing-md);
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    margin-bottom: var(--spacing-sm);
}

p {
    margin-bottom: var(--spacing-sm);
}

/* ===== LAYOUT ===== */
.container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.container-sm {
    max-width: 800px;
}

.container-lg {
    max-width: 1600px;
}

/* ===== HEADER & NAVIGATION ===== */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    letter-spacing: 0.05em;
    color: var(--primary-color);
    text-shadow: 0 0 10px rgba(0, 255, 136, 0.5);
    text-decoration: none;
    display: flex;
    align-items: center;
    transition: all 0.2s ease;
}

.logo:hover {
    transform: scale(1.03);
}

.logo-img {
    height: 45px;
    width: auto;
    max-width: 280px;
    object-fit: contain;
    display: block;
    filter: drop-shadow(0 0 8px rgba(0, 255, 136, 0.4));
    transition: filter 0.2s ease;
}

.logo:hover .logo-img {
    filter: drop-shadow(0 0 12px rgba(0, 255, 136, 0.6));
}

@media (max-width: 768px) {
    .logo {
        font-size: 1.4rem;
    }
    .logo-img {
        height: 36px;
        max-width: 200px;
    }
}

nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

nav a {
    font-weight: 500;
    text-transform: uppercase;
    font-size: 0.9rem;
    letter-spacing: 0.05em;
    padding: 0.5rem 1rem;
    transition: all var(--transition-fast);
    position: relative;
}

nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: width var(--transition-fast);
}

nav a:hover::after {
    width: 80%;
}

.language-switcher {
    display: flex;
    gap: 0.5rem;
    margin-left: var(--spacing-md);
    padding-left: var(--spacing-md);
    border-left: 1px solid var(--border-color);
}

.language-switcher button {
    padding: 0.3rem 0.6rem;
    font-size: 0.8rem;
    text-transform: uppercase;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.language-switcher button:hover,
.language-switcher button.active {
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.cart-icon {
    position: relative;
    padding: 0.5rem;
}

.cart-count {
    position: absolute;
    top: 0;
    right: 0;
    background-color: var(--secondary-color);
    color: white;
    border-radius: 50%;
    width: 18px;
    height: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    font-weight: bold;
}

.mobile-menu-toggle {
    display: none;
    font-size: 1.5rem;
}

/* ===== MAIN CONTENT ===== */
main {
    min-height: calc(100vh - 80px);
    padding-top: 80px;
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: var(--radius-sm);
    transition: all var(--transition-normal);
    cursor: pointer;
    border: 2px solid transparent;
    font-size: 0.95rem;
}

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

.btn-primary:hover {
    background-color: transparent;
    border-color: var(--primary-color);
    color: var(--primary-color);
    box-shadow: var(--shadow-glow);
}

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

.btn-secondary:hover {
    background-color: var(--text-primary);
    color: var(--dark-bg);
}

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

.btn-danger:hover {
    background-color: transparent;
    border-color: var(--error);
    color: var(--error);
}

.btn-block {
    width: 100%;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

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

label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 0.05em;
}

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

input:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 255, 136, 0.1);
}

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

/* ===== CARDS ===== */
.card {
    background-color: var(--dark-bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    transition: all var(--transition-normal);
}

.card:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

/* ===== PRODUCT GRID ===== */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.product-card {
    background-color: var(--dark-bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: all var(--transition-normal);
    cursor: pointer;
}

.product-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.product-image {
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
    background-color: var(--dark-bg-tertiary);
}

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

.product-name {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.product-price {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary-color);
}

.product-price-old {
    text-decoration: line-through;
    color: var(--text-muted);
    margin-right: var(--spacing-xs);
}

/* ===== HERO SECTION ===== */
.hero {
    position: relative;
    height: calc(100vh - 80px);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-video {
    position: absolute;
    top: 50%;
    left: 50%;
    min-width: 100%;
    min-height: 100%;
    width: auto;
    height: auto;
    transform: translate(-50%, -50%);
    z-index: -1;
    opacity: 0.4;
}

.hero-content {
    text-align: center;
    z-index: 1;
    max-width: 800px;
}

.hero h1 {
    font-size: clamp(3rem, 8vw, 6rem);
    margin-bottom: var(--spacing-md);
    text-shadow: 0 0 30px rgba(0, 255, 136, 0.5);
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
}

/* ===== COUNTDOWN TIMER ===== */
.countdown {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    margin: var(--spacing-xl) 0;
}

.countdown-item {
    text-align: center;
    background-color: var(--dark-bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    min-width: 100px;
}

.countdown-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    font-family: var(--font-heading);
}

.countdown-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    text-transform: uppercase;
}

/* ===== FOOTER ===== */
footer {
    background-color: var(--dark-bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 60px 0 32px;
    margin-top: 80px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 60px;
    margin-bottom: 48px;
}

.footer-section h3 {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    letter-spacing: 0.08em;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    transition: color 0.15s ease;
    display: inline-block;
}

.footer-links a:hover {
    color: var(--text-primary);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.85rem;
    flex-wrap: wrap;
    gap: 12px;
}

@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

/* ===== UTILITIES ===== */
.text-center {
    text-align: center;
}

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

.text-secondary {
    color: var(--text-secondary);
}

.text-muted {
    color: var(--text-muted);
}

.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }
.mt-5 { margin-top: var(--spacing-xl); }

.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }
.mb-5 { margin-bottom: var(--spacing-xl); }

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    :root {
        --spacing-sm: 0.75rem;
        --spacing-md: 1rem;
        --spacing-lg: 1.5rem;
        --spacing-xl: 2rem;
    }
    
    .header-content {
        padding: var(--spacing-sm);
    }
    
    nav {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: var(--dark-bg);
        border-top: 1px solid var(--border-color);
        padding: var(--spacing-md);
    }
    
    nav.active {
        display: flex;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .product-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        gap: var(--spacing-sm);
    }
    
    .countdown {
        flex-wrap: wrap;
    }
    
    .countdown-item {
        min-width: 80px;
        padding: var(--spacing-sm);
    }
    
    .countdown-value {
        font-size: 2rem;
    }
}

/* ===== ANIMATIONS ===== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.6s ease;
}

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

.slide-in {
    animation: slideIn 0.5s ease;
}

/* ===== LOADING SPINNER ===== */
.spinner {
    border: 3px solid var(--border-color);
    border-top: 3px solid var(--primary-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}