/* ============================================
   OPTICVISION - Optical/Eyewear E-commerce Template
   Modern, Clean, Professional Design
   ============================================ */

/* -------------------- CSS Variables -------------------- */
:root {
    --primary: #5C6BC0;
    --primary-dark: #3F51B5;
    --primary-light: #7986CB;
    --secondary: #ECEFF1;
    --dark: #37474F;
    --dark-light: #546E7A;
    --white: #FFFFFF;
    --black: #263238;
    --gray: #90A4AE;
    --gray-light: #CFD8DC;
    --success: #4CAF50;
    --warning: #FF9800;
    --danger: #F44336;
    --shadow: 0 4px 20px rgba(55, 71, 79, 0.1);
    --shadow-lg: 0 10px 40px rgba(55, 71, 79, 0.15);
    --transition: all 0.3s ease;
    --border-radius: 8px;
    --border-radius-lg: 16px;
}

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

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--white);
    color: var(--dark);
    line-height: 1.6;
    overflow-x: hidden;
}

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

ul, ol {
    list-style: none;
}

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

button, input, select, textarea {
    font-family: inherit;
    font-size: inherit;
    border: none;
    outline: none;
}

button {
    cursor: pointer;
    background: none;
}

.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 20px;
}

/* -------------------- Typography -------------------- */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    color: var(--dark);
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.75rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 3vw, 1.75rem); }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

p {
    color: var(--dark-light);
    margin-bottom: 1rem;
}

/* -------------------- Buttons -------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 32px;
    font-weight: 500;
    border-radius: var(--border-radius);
    transition: var(--transition);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 0.875rem;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(92, 107, 192, 0.35);
}

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

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

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

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

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

.btn-dark:hover {
    background: var(--black);
}

.btn-icon {
    width: 48px;
    height: 48px;
    padding: 0;
    border-radius: 50%;
}

/* -------------------- Header & Navigation -------------------- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--white);
    transition: var(--transition);
}

.header.scrolled {
    box-shadow: var(--shadow);
}

.top-bar {
    background: var(--dark);
    color: var(--white);
    padding: 8px 0;
    font-size: 0.875rem;
}

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

.top-bar-left {
    display: flex;
    gap: 20px;
}

.top-bar-left span {
    display: flex;
    align-items: center;
    gap: 8px;
}

.top-bar-right {
    display: flex;
    gap: 15px;
}

.top-bar-right a:hover {
    color: var(--primary-light);
}

.nav-main {
    padding: 15px 0;
    border-bottom: 1px solid var(--gray-light);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--dark);
}

.logo-icon {
    width: 45px;
    height: 45px;
    background: var(--primary);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
}

.nav-menu {
    display: flex;
    gap: 35px;
}

.nav-link {
    font-weight: 500;
    color: var(--dark);
    position: relative;
    padding: 5px 0;
}

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

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 15px;
}

.nav-action-btn {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--secondary);
    color: var(--dark);
    position: relative;
    transition: var(--transition);
}

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

.cart-count {
    position: absolute;
    top: -5px;
    right: -5px;
    width: 20px;
    height: 20px;
    background: var(--primary);
    color: var(--white);
    border-radius: 50%;
    font-size: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    width: 30px;
    cursor: pointer;
}

.mobile-menu-toggle span {
    width: 100%;
    height: 3px;
    background: var(--dark);
    border-radius: 2px;
    transition: var(--transition);
}

/* -------------------- Hero Section -------------------- */
.hero {
    padding-top: 140px;
    background: linear-gradient(135deg, var(--secondary) 0%, var(--white) 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero-slider {
    position: relative;
    width: 100%;
}

.hero-slide {
    display: none;
    align-items: center;
    gap: 60px;
}

.hero-slide.active {
    display: flex;
}

.hero-content {
    flex: 1;
    max-width: 550px;
}

.hero-badge {
    display: inline-block;
    background: var(--primary);
    color: var(--white);
    padding: 8px 20px;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 20px;
}

.hero-title {
    margin-bottom: 20px;
    color: var(--dark);
}

.hero-title span {
    color: var(--primary);
}

.hero-text {
    font-size: 1.125rem;
    margin-bottom: 30px;
    color: var(--dark-light);
}

.hero-buttons {
    display: flex;
    gap: 15px;
    margin-bottom: 40px;
}

.hero-features {
    display: flex;
    gap: 30px;
}

.hero-feature {
    display: flex;
    align-items: center;
    gap: 12px;
}

.hero-feature-icon {
    width: 50px;
    height: 50px;
    background: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    box-shadow: var(--shadow);
}

.hero-feature-text h5 {
    font-size: 1rem;
    margin-bottom: 2px;
}

.hero-feature-text span {
    font-size: 0.875rem;
    color: var(--gray);
}

.hero-image {
    flex: 1;
    position: relative;
}

.hero-image img {
    width: 100%;
    max-width: 600px;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
}

.hero-image-badge {
    position: absolute;
    bottom: 30px;
    left: -30px;
    background: var(--white);
    padding: 20px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    text-align: center;
}

.hero-image-badge h4 {
    color: var(--primary);
    font-size: 1.5rem;
}

.hero-image-badge span {
    font-size: 0.875rem;
    color: var(--gray);
}

.hero-nav {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
}

.hero-nav-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--gray-light);
    cursor: pointer;
    transition: var(--transition);
}

.hero-nav-dot.active {
    background: var(--primary);
    width: 30px;
    border-radius: 6px;
}

/* -------------------- Categories Section -------------------- */
.categories {
    padding: 100px 0;
    background: var(--white);
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-subtitle {
    display: inline-block;
    color: var(--primary);
    font-weight: 500;
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 2px;
    font-size: 0.875rem;
}

.section-title {
    margin-bottom: 15px;
}

.section-text {
    max-width: 600px;
    margin: 0 auto;
    color: var(--dark-light);
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.category-card {
    position: relative;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    height: 350px;
    cursor: pointer;
    group: hover;
}

.category-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.category-card:hover img {
    transform: scale(1.1);
}

.category-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(38, 50, 56, 0.85) 0%, transparent 60%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 30px;
    transition: var(--transition);
}

.category-card:hover .category-overlay {
    background: linear-gradient(to top, rgba(92, 107, 192, 0.9) 0%, rgba(92, 107, 192, 0.3) 100%);
}

.category-overlay h4 {
    color: var(--white);
    font-size: 1.5rem;
    margin-bottom: 5px;
}

.category-overlay span {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.875rem;
}

.category-arrow {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 45px;
    height: 45px;
    background: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--dark);
    opacity: 0;
    transform: translateY(-10px);
    transition: var(--transition);
}

.category-card:hover .category-arrow {
    opacity: 1;
    transform: translateY(0);
}

/* -------------------- Products Section -------------------- */
.products {
    padding: 100px 0;
    background: var(--secondary);
}

.products-tabs {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 50px;
}

.products-tab {
    padding: 12px 30px;
    border-radius: 50px;
    font-weight: 500;
    color: var(--dark);
    background: var(--white);
    transition: var(--transition);
}

.products-tab:hover,
.products-tab.active {
    background: var(--primary);
    color: var(--white);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

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

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.product-image {
    position: relative;
    height: 280px;
    overflow: hidden;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.product-card:hover .product-image img {
    transform: scale(1.08);
}

.product-badges {
    position: absolute;
    top: 15px;
    left: 15px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.product-badge {
    padding: 6px 12px;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.product-badge.new {
    background: var(--primary);
    color: var(--white);
}

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

.product-badge.hot {
    background: var(--warning);
    color: var(--white);
}

.product-actions {
    position: absolute;
    top: 15px;
    right: 15px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    opacity: 0;
    transform: translateX(10px);
    transition: var(--transition);
}

.product-card:hover .product-actions {
    opacity: 1;
    transform: translateX(0);
}

.product-action-btn {
    width: 40px;
    height: 40px;
    background: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--dark);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

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

.product-info {
    padding: 25px;
}

.product-category {
    font-size: 0.75rem;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 8px;
}

.product-name {
    font-size: 1.125rem;
    margin-bottom: 10px;
    color: var(--dark);
}

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

.product-rating {
    display: flex;
    align-items: center;
    gap: 5px;
    margin-bottom: 15px;
}

.product-rating i {
    color: var(--warning);
    font-size: 0.875rem;
}

.product-rating span {
    font-size: 0.875rem;
    color: var(--gray);
}

.product-price {
    display: flex;
    align-items: center;
    gap: 10px;
}

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

.product-price .original {
    font-size: 1rem;
    color: var(--gray);
    text-decoration: line-through;
}

/* -------------------- Promo Banner -------------------- */
.promo-banner {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    position: relative;
    overflow: hidden;
}

.promo-banner::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 50%;
}

.promo-content {
    text-align: center;
    position: relative;
    z-index: 1;
}

.promo-badge {
    display: inline-block;
    background: var(--white);
    color: var(--primary);
    padding: 8px 20px;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 20px;
}

.promo-title {
    color: var(--white);
    margin-bottom: 20px;
}

.promo-text {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.125rem;
    max-width: 600px;
    margin: 0 auto 30px;
}

.countdown {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 40px;
}

.countdown-item {
    background: var(--white);
    padding: 25px 30px;
    border-radius: var(--border-radius);
    text-align: center;
    min-width: 100px;
}

.countdown-item span {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary);
    line-height: 1;
}

.countdown-item small {
    font-size: 0.875rem;
    color: var(--gray);
    text-transform: uppercase;
}

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

.promo-btn:hover {
    background: var(--dark);
    color: var(--white);
}

/* -------------------- Features Section -------------------- */
.features {
    padding: 100px 0;
    background: var(--white);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.feature-card {
    text-align: center;
    padding: 40px 30px;
    background: var(--secondary);
    border-radius: var(--border-radius-lg);
    transition: var(--transition);
}

.feature-card:hover {
    background: var(--primary);
    transform: translateY(-10px);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    font-size: 2rem;
    color: var(--primary);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.feature-card:hover .feature-icon {
    background: var(--white);
    color: var(--primary);
}

.feature-card h4 {
    margin-bottom: 15px;
    transition: var(--transition);
}

.feature-card:hover h4 {
    color: var(--white);
}

.feature-card p {
    font-size: 0.9375rem;
    transition: var(--transition);
}

.feature-card:hover p {
    color: rgba(255, 255, 255, 0.9);
}

/* -------------------- Brands Section -------------------- */
.brands {
    padding: 80px 0;
    background: var(--secondary);
}

.brands-slider {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 50px;
}

.brand-logo {
    opacity: 0.5;
    transition: var(--transition);
    filter: grayscale(100%);
}

.brand-logo:hover {
    opacity: 1;
    filter: grayscale(0%);
}

.brand-logo img {
    max-height: 60px;
}

/* -------------------- About Section -------------------- */
.about-section {
    padding: 100px 0;
    background: var(--white);
}

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

.about-image {
    position: relative;
}

.about-image img {
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
}

.about-experience {
    position: absolute;
    bottom: -30px;
    right: -30px;
    background: var(--primary);
    color: var(--white);
    padding: 30px;
    border-radius: var(--border-radius);
    text-align: center;
}

.about-experience h3 {
    font-size: 3rem;
    color: var(--white);
    line-height: 1;
}

.about-experience span {
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.about-content .section-subtitle {
    text-align: left;
    display: block;
}

.about-content .section-title {
    text-align: left;
    margin-bottom: 20px;
}

.about-list {
    margin: 30px 0;
}

.about-list li {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    margin-bottom: 20px;
}

.about-list-icon {
    width: 30px;
    height: 30px;
    background: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    flex-shrink: 0;
    font-size: 0.875rem;
}

.about-list h5 {
    margin-bottom: 5px;
}

.about-list p {
    font-size: 0.9375rem;
    margin-bottom: 0;
}

/* -------------------- Testimonials Section -------------------- */
.testimonials {
    padding: 100px 0;
    background: var(--secondary);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.testimonial-card {
    background: var(--white);
    padding: 40px;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
    position: relative;
}

.testimonial-quote {
    position: absolute;
    top: 20px;
    right: 30px;
    font-size: 4rem;
    color: var(--primary);
    opacity: 0.1;
    line-height: 1;
}

.testimonial-rating {
    display: flex;
    gap: 5px;
    margin-bottom: 20px;
}

.testimonial-rating i {
    color: var(--warning);
}

.testimonial-text {
    font-size: 1.0625rem;
    font-style: italic;
    margin-bottom: 25px;
    line-height: 1.7;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 15px;
}

.testimonial-author img {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    object-fit: cover;
}

.testimonial-author h5 {
    margin-bottom: 3px;
}

.testimonial-author span {
    font-size: 0.875rem;
    color: var(--gray);
}

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

.newsletter-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 60px;
}

.newsletter-text h3 {
    color: var(--white);
    margin-bottom: 10px;
}

.newsletter-text p {
    color: var(--gray);
    margin-bottom: 0;
}

.newsletter-form {
    display: flex;
    gap: 15px;
    flex: 1;
    max-width: 500px;
}

.newsletter-form input {
    flex: 1;
    padding: 16px 25px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--border-radius);
    color: var(--white);
}

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

.newsletter-form .btn {
    white-space: nowrap;
}

/* -------------------- Footer -------------------- */
.footer {
    background: var(--black);
    color: var(--gray);
    padding-top: 80px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
    gap: 50px;
    padding-bottom: 60px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-about .logo {
    color: var(--white);
    margin-bottom: 20px;
}

.footer-about p {
    margin-bottom: 25px;
    line-height: 1.8;
}

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

.footer-social a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    transition: var(--transition);
}

.footer-social a:hover {
    background: var(--primary);
}

.footer-col h5 {
    color: var(--white);
    margin-bottom: 25px;
    font-size: 1.125rem;
}

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

.footer-links a {
    color: var(--gray);
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--primary);
    padding-left: 5px;
}

.footer-contact li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 15px;
}

.footer-contact i {
    color: var(--primary);
    margin-top: 4px;
}

.footer-bottom {
    padding: 25px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-bottom p {
    margin-bottom: 0;
    font-size: 0.875rem;
}

.footer-payments {
    display: flex;
    gap: 15px;
}

.footer-payments img {
    height: 30px;
    opacity: 0.7;
}

/* -------------------- Shop Page -------------------- */
.page-hero {
    padding: 180px 0 80px;
    background: linear-gradient(135deg, var(--secondary) 0%, var(--white) 100%);
    text-align: center;
}

.breadcrumb {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 15px;
}

.breadcrumb a {
    color: var(--gray);
}

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

.breadcrumb span {
    color: var(--gray);
}

.shop-section {
    padding: 80px 0;
}

.shop-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 40px;
}

.shop-sidebar {
    position: sticky;
    top: 140px;
    height: fit-content;
}

.filter-widget {
    background: var(--white);
    padding: 30px;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
    margin-bottom: 30px;
}

.filter-widget h4 {
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--gray-light);
}

.filter-list label {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
    cursor: pointer;
}

.filter-list input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--primary);
}

.filter-list span {
    flex: 1;
}

.filter-list small {
    color: var(--gray);
}

.price-range {
    margin-top: 20px;
}

.price-inputs {
    display: flex;
    gap: 15px;
    margin-top: 15px;
}

.price-inputs input {
    flex: 1;
    padding: 12px;
    border: 1px solid var(--gray-light);
    border-radius: var(--border-radius);
}

.color-filter {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.color-option {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    cursor: pointer;
    border: 2px solid transparent;
    transition: var(--transition);
}

.color-option:hover,
.color-option.active {
    border-color: var(--dark);
    transform: scale(1.1);
}

.shop-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--gray-light);
}

.shop-header p {
    margin-bottom: 0;
}

.shop-sort {
    display: flex;
    align-items: center;
    gap: 15px;
}

.shop-sort select {
    padding: 10px 15px;
    border: 1px solid var(--gray-light);
    border-radius: var(--border-radius);
    background: var(--white);
}

.view-toggle {
    display: flex;
    gap: 5px;
}

.view-toggle button {
    width: 40px;
    height: 40px;
    border: 1px solid var(--gray-light);
    border-radius: var(--border-radius);
    background: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.view-toggle button.active,
.view-toggle button:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--white);
}

.shop-products {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.shop-products.list-view {
    grid-template-columns: 1fr;
}

.shop-products.list-view .product-card {
    display: flex;
}

.shop-products.list-view .product-image {
    width: 300px;
    flex-shrink: 0;
}

.shop-products.list-view .product-info {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.pagination {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 50px;
}

.pagination button,
.pagination a {
    width: 45px;
    height: 45px;
    border: 1px solid var(--gray-light);
    border-radius: var(--border-radius);
    background: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.pagination button.active,
.pagination a.active,
.pagination button:hover,
.pagination a:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--white);
}

/* -------------------- Product Page -------------------- */
.product-detail {
    padding: 160px 0 80px;
}

.product-detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.product-gallery {
    position: sticky;
    top: 140px;
}

.product-main-image {
    margin-bottom: 20px;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    background: var(--secondary);
}

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

.product-thumbnails {
    display: flex;
    gap: 15px;
}

.product-thumb {
    width: 100px;
    height: 100px;
    border-radius: var(--border-radius);
    overflow: hidden;
    cursor: pointer;
    border: 2px solid transparent;
    transition: var(--transition);
}

.product-thumb:hover,
.product-thumb.active {
    border-color: var(--primary);
}

.product-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.product-detail-info .product-category {
    font-size: 0.875rem;
    margin-bottom: 10px;
}

.product-detail-info h1 {
    font-size: 2rem;
    margin-bottom: 15px;
}

.product-detail-rating {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
}

.product-detail-rating .stars i {
    color: var(--warning);
}

.product-detail-rating span {
    color: var(--gray);
}

.product-detail-price {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 25px;
}

.product-detail-price .current {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
}

.product-detail-price .original {
    font-size: 1.25rem;
    color: var(--gray);
    text-decoration: line-through;
}

.product-detail-price .discount {
    background: var(--danger);
    color: var(--white);
    padding: 5px 12px;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
}

.product-description {
    margin-bottom: 30px;
    padding-bottom: 30px;
    border-bottom: 1px solid var(--gray-light);
}

.product-options {
    margin-bottom: 30px;
}

.product-option {
    margin-bottom: 25px;
}

.product-option label {
    display: block;
    font-weight: 600;
    margin-bottom: 12px;
}

.frame-options,
.lens-options {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.frame-option,
.lens-option {
    padding: 12px 25px;
    border: 2px solid var(--gray-light);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
}

.frame-option:hover,
.frame-option.active,
.lens-option:hover,
.lens-option.active {
    border-color: var(--primary);
    background: var(--primary);
    color: var(--white);
}

.product-quantity {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 30px;
}

.quantity-selector {
    display: flex;
    align-items: center;
    border: 1px solid var(--gray-light);
    border-radius: var(--border-radius);
}

.quantity-selector button {
    width: 45px;
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.quantity-selector button:hover {
    background: var(--primary);
    color: var(--white);
}

.quantity-selector input {
    width: 60px;
    height: 45px;
    text-align: center;
    border: none;
    border-left: 1px solid var(--gray-light);
    border-right: 1px solid var(--gray-light);
}

.product-actions-main {
    display: flex;
    gap: 15px;
    margin-bottom: 30px;
}

.product-actions-main .btn {
    flex: 1;
}

.product-meta {
    padding-top: 30px;
    border-top: 1px solid var(--gray-light);
}

.product-meta p {
    margin-bottom: 10px;
    font-size: 0.9375rem;
}

.product-meta strong {
    color: var(--dark);
}

.product-tabs {
    margin-top: 80px;
}

.tabs-nav {
    display: flex;
    gap: 5px;
    border-bottom: 2px solid var(--gray-light);
    margin-bottom: 30px;
}

.tab-btn {
    padding: 15px 30px;
    font-weight: 500;
    color: var(--gray);
    position: relative;
    transition: var(--transition);
}

.tab-btn::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary);
    transform: scaleX(0);
    transition: var(--transition);
}

.tab-btn:hover,
.tab-btn.active {
    color: var(--primary);
}

.tab-btn.active::after {
    transform: scaleX(1);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.specs-table {
    width: 100%;
    border-collapse: collapse;
}

.specs-table tr {
    border-bottom: 1px solid var(--gray-light);
}

.specs-table td {
    padding: 15px;
}

.specs-table td:first-child {
    font-weight: 600;
    width: 200px;
    color: var(--dark);
}

/* -------------------- Cart Page -------------------- */
.cart-section {
    padding: 160px 0 80px;
}

.cart-layout {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 40px;
}

.cart-items {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.cart-header {
    display: grid;
    grid-template-columns: 3fr 1fr 1fr 1fr auto;
    gap: 20px;
    padding: 20px 30px;
    background: var(--secondary);
    font-weight: 600;
    color: var(--dark);
}

.cart-item {
    display: grid;
    grid-template-columns: 3fr 1fr 1fr 1fr auto;
    gap: 20px;
    align-items: center;
    padding: 30px;
    border-bottom: 1px solid var(--gray-light);
}

.cart-item:last-child {
    border-bottom: none;
}

.cart-product {
    display: flex;
    gap: 20px;
    align-items: center;
}

.cart-product-image {
    width: 100px;
    height: 100px;
    border-radius: var(--border-radius);
    overflow: hidden;
    flex-shrink: 0;
}

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

.cart-product-info h4 {
    font-size: 1rem;
    margin-bottom: 5px;
}

.cart-product-info h4 a:hover {
    color: var(--primary);
}

.cart-product-info span {
    font-size: 0.875rem;
    color: var(--gray);
}

.cart-price {
    font-weight: 600;
    color: var(--dark);
}

.cart-quantity {
    display: flex;
    align-items: center;
    border: 1px solid var(--gray-light);
    border-radius: var(--border-radius);
    width: fit-content;
}

.cart-quantity button {
    width: 35px;
    height: 35px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.cart-quantity button:hover {
    background: var(--primary);
    color: var(--white);
}

.cart-quantity input {
    width: 50px;
    height: 35px;
    text-align: center;
    border: none;
    border-left: 1px solid var(--gray-light);
    border-right: 1px solid var(--gray-light);
}

.cart-total {
    font-weight: 700;
    color: var(--primary);
    font-size: 1.125rem;
}

.cart-remove {
    color: var(--gray);
    transition: var(--transition);
}

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

.cart-summary {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
    padding: 30px;
    height: fit-content;
    position: sticky;
    top: 140px;
}

.cart-summary h3 {
    margin-bottom: 25px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--gray-light);
}

.cart-summary-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 15px;
}

.cart-summary-row.total {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 2px solid var(--gray-light);
    font-size: 1.25rem;
    font-weight: 700;
}

.cart-summary-row.total span:last-child {
    color: var(--primary);
}

.cart-promo {
    margin: 25px 0;
}

.cart-promo input {
    width: 100%;
    padding: 14px 20px;
    border: 1px solid var(--gray-light);
    border-radius: var(--border-radius);
    margin-bottom: 10px;
}

.cart-summary .btn {
    width: 100%;
    margin-bottom: 15px;
}

.cart-secure {
    text-align: center;
    color: var(--gray);
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.cart-secure i {
    color: var(--success);
}

.cart-empty {
    text-align: center;
    padding: 80px 20px;
}

.cart-empty i {
    font-size: 5rem;
    color: var(--gray-light);
    margin-bottom: 25px;
}

.cart-empty h3 {
    margin-bottom: 15px;
}

.cart-empty p {
    margin-bottom: 25px;
}

/* -------------------- Contact Page -------------------- */
.contact-section {
    padding: 80px 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 60px;
}

.contact-info-card {
    background: var(--primary);
    color: var(--white);
    padding: 50px;
    border-radius: var(--border-radius-lg);
}

.contact-info-card h3 {
    color: var(--white);
    margin-bottom: 15px;
}

.contact-info-card > p {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 40px;
}

.contact-info-item {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
}

.contact-info-icon {
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-info-item h5 {
    color: var(--white);
    margin-bottom: 5px;
}

.contact-info-item p {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 0;
}

.contact-social {
    margin-top: 40px;
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.contact-social h5 {
    color: var(--white);
    margin-bottom: 15px;
}

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

.contact-social-links a {
    width: 45px;
    height: 45px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    transition: var(--transition);
}

.contact-social-links a:hover {
    background: var(--white);
    color: var(--primary);
}

.contact-form-wrap {
    background: var(--white);
    padding: 50px;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
}

.contact-form-wrap h3 {
    margin-bottom: 10px;
}

.contact-form-wrap > p {
    margin-bottom: 30px;
    color: var(--gray);
}

.contact-form .form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 20px;
}

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

.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--dark);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px 20px;
    border: 1px solid var(--gray-light);
    border-radius: var(--border-radius);
    background: var(--white);
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(92, 107, 192, 0.1);
}

.form-group textarea {
    height: 150px;
    resize: vertical;
}

/* -------------------- Quick View Modal -------------------- */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--white);
    width: 90%;
    max-width: 1000px;
    max-height: 90vh;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    transform: scale(0.9);
    transition: var(--transition);
}

.modal-overlay.active .modal {
    transform: scale(1);
}

.modal-close {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
    background: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    transition: var(--transition);
}

.modal-close:hover {
    background: var(--danger);
    color: var(--white);
}

.modal-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    position: relative;
}

.modal-image {
    height: 100%;
    min-height: 500px;
}

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

.modal-info {
    padding: 40px;
    overflow-y: auto;
    max-height: 90vh;
}

/* -------------------- Search Overlay -------------------- */
.search-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.95);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.search-overlay.active {
    opacity: 1;
    visibility: visible;
}

.search-overlay-close {
    position: absolute;
    top: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: transparent;
    border: 2px solid var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.5rem;
    transition: var(--transition);
}

.search-overlay-close:hover {
    background: var(--white);
    color: var(--dark);
}

.search-form {
    width: 100%;
    max-width: 700px;
    padding: 0 20px;
}

.search-form input {
    width: 100%;
    padding: 25px;
    font-size: 1.5rem;
    background: transparent;
    border: none;
    border-bottom: 2px solid var(--white);
    color: var(--white);
}

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

/* -------------------- Animations -------------------- */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.animate-fadeIn {
    animation: fadeIn 0.6s ease forwards;
}

.animate-slideUp {
    animation: slideUp 0.6s ease forwards;
}

/* -------------------- Responsive Design -------------------- */
@media (max-width: 1200px) {
    .categories-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .products-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 992px) {
    .hero-slide {
        flex-direction: column;
        text-align: center;
    }

    .hero-content {
        max-width: 100%;
    }

    .hero-buttons {
        justify-content: center;
    }

    .hero-features {
        justify-content: center;
    }

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

    .testimonials-grid {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .shop-layout {
        grid-template-columns: 1fr;
    }

    .shop-sidebar {
        position: static;
    }

    .product-detail-grid {
        grid-template-columns: 1fr;
    }

    .product-gallery {
        position: static;
    }

    .cart-layout {
        grid-template-columns: 1fr;
    }

    .cart-summary {
        position: static;
    }

    .about-grid {
        grid-template-columns: 1fr;
    }

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

    .modal-content {
        grid-template-columns: 1fr;
    }

    .modal-image {
        min-height: 300px;
    }
}

@media (max-width: 768px) {
    .top-bar {
        display: none;
    }

    .nav-menu {
        position: fixed;
        top: 80px;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 20px;
        gap: 0;
        box-shadow: var(--shadow-lg);
        transform: translateY(-150%);
        transition: var(--transition);
    }

    .nav-menu.active {
        transform: translateY(0);
    }

    .nav-link {
        padding: 15px 0;
        border-bottom: 1px solid var(--gray-light);
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .hero {
        padding-top: 120px;
        min-height: auto;
        padding-bottom: 60px;
    }

    .categories-grid {
        grid-template-columns: 1fr;
    }

    .category-card {
        height: 250px;
    }

    .products-grid,
    .shop-products {
        grid-template-columns: 1fr;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .countdown {
        flex-wrap: wrap;
    }

    .countdown-item {
        min-width: 80px;
        padding: 15px 20px;
    }

    .countdown-item span {
        font-size: 1.75rem;
    }

    .newsletter-content {
        flex-direction: column;
        text-align: center;
    }

    .newsletter-form {
        flex-direction: column;
        max-width: 100%;
    }

    .footer-grid {
        grid-template-columns: 1fr;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }

    .cart-header {
        display: none;
    }

    .cart-item {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .cart-product {
        flex-direction: column;
        text-align: center;
    }

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

@media (max-width: 480px) {
    .hero-buttons {
        flex-direction: column;
    }

    .hero-features {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        padding: 12px 25px;
    }

    .product-thumbnails {
        flex-wrap: wrap;
    }

    .product-thumb {
        width: 70px;
        height: 70px;
    }

    .product-actions-main {
        flex-direction: column;
    }
}

/* -------------------- Utility Classes -------------------- */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.mt-20 { margin-top: 20px; }
.mt-40 { margin-top: 40px; }
.mb-20 { margin-bottom: 20px; }
.mb-40 { margin-bottom: 40px; }
.py-80 { padding-top: 80px; padding-bottom: 80px; }
.bg-light { background: var(--secondary); }
.bg-white { background: var(--white); }