:root {
    /* Light Mode */
    --bg-color: #ffffff;
    --text-color: #333333;
    --primary-color: #007bff;
    --secondary-color: #6c757d;
    --card-bg: #ffffff;
    --header-bg: rgba(255, 255, 255, 0.95);
    --input-bg: #ffffff;
    --border-color: #eeeeee;
    --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

body.dark-mode {
    --bg-color: #121212;
    --text-color: #f8f9fa;
    --primary-color: #3793ff;
    --secondary-color: #adb5bd;
    --card-bg: #1e1e1e;
    --header-bg: rgba(18, 18, 18, 0.95);
    --input-bg: #2d2d2d;
    --border-color: #333333;
}

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

body {
    font-family: 'Poppins', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    transition: background-color 0.4s ease, color 0.4s ease;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header & Nav */
header {
    background: var(--header-bg);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0,0,0,0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    transition: var(--transition);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    font-size: 1.3rem;
    color: var(--text-color);
}

.logo img {
    height: 45px;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 35px;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition);
}

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

.theme-btn {
    background: none;
    border: none;
    color: var(--text-color);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 8px;
    border-radius: 50%;
    transition: var(--transition);
}

.theme-btn:hover {
    background: rgba(128, 128, 128, 0.1);
    transform: rotate(15deg);
}

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

/* Hero Section */
.hero {
    height: 100vh;
    background: linear-gradient(rgba(0,0,0,0.5), rgba(0,0,0,0.5)), url('bike1.jpg') no-repeat center center/cover;
    background-attachment: fixed;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: #fff;
}

.hero h1 {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: 25px;
    letter-spacing: -1px;
    line-height: 1.1;
}

.hero p {
    font-size: 1.3rem;
    margin-bottom: 40px;
    opacity: 0.9;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.btn {
    display: inline-block;
    padding: 15px 40px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    text-transform: uppercase;
    font-size: 0.9rem;
    letter-spacing: 1px;
}

.btn-primary {
    background: var(--primary-color);
    color: #fff;
    box-shadow: 0 10px 20px rgba(0, 123, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 123, 255, 0.4);
}

.btn-secondary {
    background: rgba(255,255,255,0.1);
    backdrop-filter: blur(5px);
    border: 2px solid #fff;
    color: #fff;
    margin-left: 20px;
}

.btn-secondary:hover {
    background: #fff;
    color: #000;
}

/* Products Section */
.products {
    padding: 120px 0;
}

.section-title {
    text-align: center;
    font-size: 2.8rem;
    margin-bottom: 70px;
    font-weight: 700;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 40px;
}

.product-card {
    background: var(--card-bg);
    border-radius: 20px;
    overflow: hidden;
    padding: 30px;
    text-align: center;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.product-card:hover {
    transform: translateY(-15px) scale(1.02);
    box-shadow: 0 30px 60px rgba(0,0,0,0.1);
    border-color: var(--primary-color);
}

.product-img {
    height: 280px;
    overflow: hidden;
    border-radius: 15px;
    margin-bottom: 25px;
    background: #f1f1f1;
}

.product-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.product-card:hover .product-img img {
    transform: scale(1.15);
}

.product-card h3 {
    margin-bottom: 12px;
    font-size: 1.5rem;
    color: var(--text-color);
}

.product-card p {
    color: var(--secondary-color);
    font-size: 0.95rem;
    margin-bottom: 20px;
}

.price {
    display: block;
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 25px;
}

.btn-product {
    background: var(--text-color);
    color: var(--bg-color);
    width: 100%;
    padding: 15px;
}

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

/* Contact Section */
.contact {
    background: var(--light-color);
    padding: 120px 0;
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 60px;
    background: var(--card-bg);
    padding: 60px;
    border-radius: 30px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.05);
}

.contact-info h3 {
    font-size: 2rem;
    margin-bottom: 30px;
}

.contact-info p {
    margin-bottom: 25px;
    display: flex;
    align-items: center;
    gap: 20px;
    font-size: 1.1rem;
}

.contact-info i {
    width: 50px;
    height: 50px;
    background: rgba(0, 123, 255, 0.1);
    color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    font-size: 1.4rem;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-form input, 
.contact-form textarea {
    padding: 18px;
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-color);
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}

.contact-form input:focus, 
.contact-form textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(0, 123, 255, 0.1);
}

/* Footer */
footer {
    background: #111;
    color: #fff;
    padding: 80px 0;
    text-align: center;
}

.social-links {
    margin-top: 30px;
    display: flex;
    justify-content: center;
    gap: 25px;
}

.social-links a {
    color: #fff;
    font-size: 1.8rem;
    transition: var(--transition);
    opacity: 0.7;
}

.social-links a:hover {
    color: var(--primary-color);
    opacity: 1;
    transform: translateY(-5px);
}

/* Scroll Animations */
.reveal, .reveal-up, .reveal-left, .reveal-right {
    opacity: 0;
    transition: all 1s cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal-up { transform: translateY(60px); }
.reveal-left { transform: translateX(-60px); }
.reveal-right { transform: translateX(60px); }

.active {
    opacity: 1;
    transform: translate(0, 0);
}

.delay-1 { transition-delay: 0.2s; }
.delay-2 { transition-delay: 0.4s; }

/* Responsive */
@media (max-width: 992px) {
    .hero h1 { font-size: 3rem; }
    .contact-wrapper { grid-template-columns: 1fr; padding: 40px; }
}

@media (max-width: 768px) {
    .nav-links { display: none; }
    .menu-toggle { display: block; }
    .hero h1 { font-size: 2.5rem; }
    .btn-secondary { margin-left: 0; margin-top: 15px; width: 100%; }
    .btn-primary { width: 100%; }
}