/* ============================
   EduStore - Design System
   ============================ */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

:root {
    --primary: #0EA5E9;
    --primary-dark: #0284C7;
    --primary-light: #7DD3FC;
    --primary-50: #F0F9FF;
    --secondary: #1E3A5F;
    --secondary-dark: #0F2440;
    --accent: #F59E0B;
    --success: #10B981;
    --danger: #EF4444;
    --warning: #F59E0B;
    --white: #FFFFFF;
    --gray-50: #F8FAFC;
    --gray-100: #F1F5F9;
    --gray-200: #E2E8F0;
    --gray-300: #CBD5E1;
    --gray-400: #94A3B8;
    --gray-500: #64748B;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1E293B;
    --gray-900: #0F172A;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --radius-sm: 6px;
    --radius: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --max-width: 1280px;
}

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

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--gray-800);
    background: var(--white);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

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

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

ul {
    list-style: none;
}

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

input,
select,
textarea {
    font-family: inherit;
    font-size: 1rem;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1.5rem;
}

.section {
    padding: 5rem 0;
}

.section-title {
    font-size: 2.25rem;
    font-weight: 800;
    text-align: center;
    margin-bottom: 0.75rem;
    color: var(--secondary);
}

.section-subtitle {
    text-align: center;
    color: var(--gray-500);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto 3rem;
}

/* ============================
   Buttons
   ============================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.75rem;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition);
    border: 2px solid transparent;
}

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

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

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

.btn-secondary:hover {
    background: var(--secondary-dark);
    transform: translateY(-2px);
}

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

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

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

.btn-white:hover {
    background: var(--gray-100);
    transform: translateY(-2px);
}

.btn-lg {
    padding: 1rem 2.25rem;
    font-size: 1.1rem;
}

.btn-sm {
    padding: 0.5rem 1.25rem;
    font-size: 0.875rem;
}

.btn-icon {
    width: 44px;
    height: 44px;
    padding: 0;
    border-radius: var(--radius-full);
}

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

.btn-danger:hover {
    background: #DC2626;
}

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

/* ============================
   Header / Navigation
   ============================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--gray-200);
    transition: var(--transition);
}

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

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

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--secondary);
}

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

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-links a {
    font-weight: 500;
    color: var(--gray-600);
    position: relative;
    padding: 0.25rem 0;
}

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

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.nav-actions .btn-icon {
    background: var(--gray-100);
    color: var(--gray-600);
    position: relative;
}

.nav-actions .btn-icon:hover {
    background: var(--primary-50);
    color: var(--primary);
}

.cart-badge {
    position: absolute;
    top: -4px;
    right: -4px;
    background: var(--danger);
    color: var(--white);
    font-size: 0.7rem;
    font-weight: 700;
    width: 20px;
    height: 20px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    padding: 0.5rem;
}

.hamburger span {
    width: 24px;
    height: 2px;
    background: var(--gray-700);
    transition: var(--transition);
    border-radius: 2px;
}

/* ============================
   Hero Section
   ============================ */
.hero {
    padding: 8rem 0 5rem;
    background: linear-gradient(135deg, var(--primary-50) 0%, var(--white) 50%, #EFF6FF 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(14, 165, 233, 0.08) 0%, transparent 70%);
    border-radius: 50%;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-content h1 {
    font-size: 3.25rem;
    font-weight: 800;
    line-height: 1.15;
    color: var(--secondary);
    margin-bottom: 1.25rem;
}

.hero-content h1 .highlight {
    color: var(--primary);
    position: relative;
}

.hero-content p {
    font-size: 1.2rem;
    color: var(--gray-500);
    margin-bottom: 2rem;
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    gap: 2.5rem;
    margin-top: 2.5rem;
}

.hero-stat {
    text-align: center;
}

.hero-stat .number {
    display: block;
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--primary);
}

.hero-stat .label {
    font-size: 0.85rem;
    color: var(--gray-500);
}

.hero-image {
    position: relative;
}

.hero-image img {
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
}

.hero-image::before {
    content: '';
    position: absolute;
    inset: -8px;
    border-radius: var(--radius-xl);
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    z-index: -1;
    opacity: 0.15;
}

/* ============================
   Features Section
   ============================ */
.features {
    background: var(--white);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.feature-card {
    padding: 2rem;
    border-radius: var(--radius-lg);
    background: var(--gray-50);
    border: 1px solid var(--gray-200);
    transition: var(--transition);
    text-align: center;
}

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

.feature-icon {
    width: 64px;
    height: 64px;
    border-radius: var(--radius);
    margin: 0 auto 1.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--white);
}

.feature-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--secondary);
}

.feature-card p {
    font-size: 0.9rem;
    color: var(--gray-500);
}

/* ============================
   Categories Section
   ============================ */
.categories {
    background: var(--gray-50);
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.category-card {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    background: var(--white);
    border: 1px solid var(--gray-200);
    transition: var(--transition);
    cursor: pointer;
}

.category-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary);
}

.category-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.category-card h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--secondary);
    margin-bottom: 0.25rem;
}

.category-card p {
    font-size: 0.85rem;
    color: var(--gray-500);
}

/* ============================
   Product Cards
   ============================ */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
}

.product-card {
    border-radius: var(--radius-lg);
    background: var(--white);
    border: 1px solid var(--gray-200);
    overflow: hidden;
    transition: var(--transition);
    position: relative;
}

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

.product-image {
    position: relative;
    height: 200px;
    overflow: hidden;
    background: var(--gray-100);
}

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

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

.product-badge {
    position: absolute;
    top: 12px;
    left: 12px;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--white);
    z-index: 2;
}

.badge-beginner {
    background: var(--success);
}

.badge-intermediate {
    background: var(--warning);
}

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

.product-wishlist {
    position: absolute;
    top: 12px;
    right: 12px;
    width: 36px;
    height: 36px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-400);
    transition: var(--transition);
    z-index: 2;
    border: none;
    cursor: pointer;
}

.product-wishlist:hover,
.product-wishlist.active {
    color: var(--danger);
    background: var(--white);
}

.product-info {
    padding: 1.25rem;
}

.product-category {
    font-size: 0.8rem;
    color: var(--primary);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.5rem;
}

.product-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--secondary);
    margin-bottom: 0.5rem;
    line-height: 1.4;
}

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

.product-desc {
    font-size: 0.85rem;
    color: var(--gray-500);
    margin-bottom: 1rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.product-meta {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.product-rating {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.product-rating .stars {
    color: var(--accent);
    font-size: 0.85rem;
}

.product-rating .count {
    font-size: 0.8rem;
    color: var(--gray-400);
}

.product-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.product-price {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
}

.product-price .current {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--primary);
}

.product-price .original {
    font-size: 0.9rem;
    color: var(--gray-400);
    text-decoration: line-through;
}

.product-card .btn-sm {
    border-radius: var(--radius-full);
}

/* ============================
   How It Works
   ============================ */
.how-it-works {
    background: var(--white);
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    position: relative;
}

.steps-grid::before {
    content: '';
    position: absolute;
    top: 40px;
    left: 20%;
    right: 20%;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-light), var(--primary), var(--primary-light));
    z-index: 0;
}

.step-card {
    text-align: center;
    position: relative;
    z-index: 1;
}

.step-number {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-full);
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--white);
    box-shadow: 0 8px 20px rgba(14, 165, 233, 0.3);
}

.step-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--secondary);
}

.step-card p {
    font-size: 0.9rem;
    color: var(--gray-500);
    max-width: 280px;
    margin: 0 auto;
}

/* ============================
   Testimonials
   ============================ */
.testimonials {
    background: var(--secondary);
    color: var(--white);
}

.testimonials .section-title {
    color: var(--white);
}

.testimonials .section-subtitle {
    color: var(--gray-300);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.testimonial-card {
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-lg);
    padding: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition);
}

.testimonial-card:hover {
    transform: translateY(-3px);
    background: rgba(255, 255, 255, 0.12);
}

.testimonial-stars {
    color: var(--accent);
    margin-bottom: 1rem;
}

.testimonial-text {
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 1.5rem;
    color: var(--gray-200);
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.testimonial-avatar {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    background: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.1rem;
}

.testimonial-name {
    font-weight: 600;
}

.testimonial-role {
    font-size: 0.8rem;
    color: var(--gray-400);
}

/* ============================
   CTA Section
   ============================ */
.cta-section {
    padding: 5rem 0;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    text-align: center;
    color: var(--white);
}

.cta-section h2 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.cta-section p {
    font-size: 1.15rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto 2rem;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* ============================
   Footer
   ============================ */
.footer {
    background: var(--gray-900);
    color: var(--gray-300);
    padding: 4rem 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-brand p {
    font-size: 0.9rem;
    margin-top: 1rem;
    line-height: 1.7;
}

.footer-links h4 {
    color: var(--white);
    font-size: 1rem;
    margin-bottom: 1rem;
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-links a {
    font-size: 0.9rem;
    color: var(--gray-400);
}

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

.footer-social {
    display: flex;
    gap: 0.75rem;
    margin-top: 1rem;
}

.footer-social a {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background: var(--gray-800);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-400);
    transition: var(--transition);
}

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

.footer-bottom {
    border-top: 1px solid var(--gray-800);
    padding: 1.5rem 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
    color: var(--gray-500);
}

/* ============================
   Store Page
   ============================ */
.store-hero {
    padding: 7rem 0 2rem;
    background: var(--gray-50);
    text-align: center;
}

.store-hero h1 {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--secondary);
}

.store-layout {
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: 2rem;
    padding: 2rem 0 4rem;
}

.store-sidebar {
    position: sticky;
    top: 90px;
    align-self: start;
}

.filter-group {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    border: 1px solid var(--gray-200);
    margin-bottom: 1rem;
}

.filter-group h3 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--secondary);
    margin-bottom: 1rem;
}

.filter-option {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 0;
    cursor: pointer;
    font-size: 0.9rem;
    color: var(--gray-600);
}

.filter-option input[type="checkbox"],
.filter-option input[type="radio"] {
    accent-color: var(--primary);
}

.search-box {
    display: flex;
    align-items: center;
    background: var(--white);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius);
    padding: 0.75rem 1rem;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    transition: var(--transition);
}

.search-box:focus-within {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.1);
}

.search-box input {
    flex: 1;
    border: none;
    outline: none;
    font-size: 0.95rem;
}

.search-box i {
    color: var(--gray-400);
}

/* ============================
   Product Detail Page
   ============================ */
.product-detail {
    padding: 6rem 0 3rem;
}

.product-detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.product-detail-image {
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.product-detail-image img {
    width: 100%;
}

.product-detail-info h1 {
    font-size: 2rem;
    font-weight: 800;
    color: var(--secondary);
    margin-bottom: 1rem;
}

.product-detail-meta {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.meta-tag {
    padding: 0.3rem 0.75rem;
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    font-weight: 600;
    background: var(--gray-100);
    color: var(--gray-600);
}

.product-detail-price {
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 1.5rem;
}

.product-detail-price .original {
    font-size: 1.2rem;
    color: var(--gray-400);
    text-decoration: line-through;
    margin-left: 0.5rem;
}

.features-list {
    margin-bottom: 1.5rem;
}

.features-list li {
    padding: 0.4rem 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.95rem;
    color: var(--gray-600);
}

.features-list li i {
    color: var(--success);
}

/* ============================
   Forms & Auth Pages
   ============================ */
.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 6rem 1.5rem 3rem;
    background: var(--gray-50);
}

.auth-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: 2.5rem;
    width: 100%;
    max-width: 460px;
    box-shadow: var(--shadow-lg);
}

.auth-card h1 {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--secondary);
    margin-bottom: 0.5rem;
    text-align: center;
}

.auth-card .subtitle {
    text-align: center;
    color: var(--gray-500);
    margin-bottom: 2rem;
    font-size: 0.95rem;
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 0.4rem;
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius);
    font-size: 0.95rem;
    transition: var(--transition);
    background: var(--white);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.1);
}

.form-control.error {
    border-color: var(--danger);
}

.form-error {
    font-size: 0.8rem;
    color: var(--danger);
    margin-top: 0.25rem;
}

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

/* ============================
   Cart & Checkout
   ============================ */
.cart-page,
.checkout-page {
    padding: 6rem 0 3rem;
    min-height: 80vh;
}

.cart-items {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.cart-item {
    display: flex;
    gap: 1.5rem;
    padding: 1.25rem;
    background: var(--white);
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
    align-items: center;
}

.cart-item-image {
    width: 100px;
    height: 80px;
    border-radius: var(--radius);
    overflow: hidden;
    flex-shrink: 0;
}

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

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

.cart-item-title {
    font-weight: 700;
    color: var(--secondary);
    margin-bottom: 0.25rem;
}

.cart-item-price {
    font-weight: 700;
    color: var(--primary);
    font-size: 1.1rem;
}

.cart-summary {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    border: 1px solid var(--gray-200);
    position: sticky;
    top: 90px;
}

.cart-summary h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--secondary);
}

.summary-row {
    display: flex;
    justify-content: space-between;
    padding: 0.5rem 0;
    font-size: 0.95rem;
    color: var(--gray-600);
}

.summary-total {
    font-size: 1.15rem;
    font-weight: 800;
    color: var(--secondary);
    border-top: 2px solid var(--gray-200);
    padding-top: 0.75rem;
    margin-top: 0.5rem;
}

.coupon-input {
    display: flex;
    gap: 0.5rem;
    margin: 1rem 0;
}

.coupon-input input {
    flex: 1;
}

/* ============================
   Profile / Dashboard
   ============================ */
.profile-page {
    padding: 6rem 0 3rem;
}

.profile-layout {
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: 2rem;
}

.profile-sidebar {
    background: var(--white);
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
    overflow: hidden;
    position: sticky;
    top: 90px;
    align-self: start;
}

.profile-sidebar-header {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    padding: 2rem;
    text-align: center;
    color: var(--white);
}

.profile-avatar {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.2);
    margin: 0 auto 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: 700;
}

.profile-nav {
    padding: 0.5rem;
}

.profile-nav a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    border-radius: var(--radius);
    color: var(--gray-600);
    font-weight: 500;
    transition: var(--transition);
}

.profile-nav a:hover,
.profile-nav a.active {
    background: var(--primary-50);
    color: var(--primary);
}

.profile-content {
    background: var(--white);
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
    padding: 2rem;
}

/* ============================
   Admin Dashboard
   ============================ */
.admin-layout {
    display: flex;
    min-height: 100vh;
}

.admin-sidebar {
    width: 260px;
    background: var(--secondary-dark);
    color: var(--white);
    padding: 1.5rem;
    position: fixed;
    top: 0;
    bottom: 0;
    overflow-y: auto;
}

.admin-sidebar .logo {
    color: var(--white);
    font-size: 1.3rem;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.admin-nav a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    border-radius: var(--radius);
    color: var(--gray-300);
    margin-bottom: 0.25rem;
    transition: var(--transition);
}

.admin-nav a:hover,
.admin-nav a.active {
    background: rgba(14, 165, 233, 0.15);
    color: var(--primary-light);
}

.admin-main {
    flex: 1;
    margin-left: 260px;
    background: var(--gray-50);
}

.admin-header {
    background: var(--white);
    border-bottom: 1px solid var(--gray-200);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.admin-content {
    padding: 2rem;
}

.stat-cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    border: 1px solid var(--gray-200);
}

.stat-card .stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.stat-card .stat-value {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--secondary);
}

.stat-card .stat-label {
    font-size: 0.85rem;
    color: var(--gray-500);
}

/* ============================
   Table Styles
   ============================ */
.data-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--gray-200);
}

.data-table th {
    background: var(--gray-50);
    padding: 1rem;
    text-align: left;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--gray-600);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.data-table td {
    padding: 1rem;
    border-top: 1px solid var(--gray-100);
    font-size: 0.9rem;
    color: var(--gray-700);
}

.data-table tbody tr:hover {
    background: var(--primary-50);
}

.status-badge {
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
}

.status-active,
.status-completed {
    background: #D1FAE5;
    color: #065F46;
}

.status-pending {
    background: #FEF3C7;
    color: #92400E;
}

.status-inactive,
.status-cancelled {
    background: #FEE2E2;
    color: #991B1B;
}

/* ============================
   Pagination
   ============================ */
.pagination {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 2.5rem;
}

.pagination a,
.pagination span {
    width: 40px;
    height: 40px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.9rem;
    border: 1px solid var(--gray-200);
    color: var(--gray-600);
    transition: var(--transition);
}

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

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

/* ============================
   Notification Toast
   ============================ */
.toast-container {
    position: fixed;
    top: 80px;
    right: 20px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.toast {
    padding: 1rem 1.5rem;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--white);
    font-weight: 500;
    min-width: 280px;
    animation: slideIn 0.3s ease;
    box-shadow: var(--shadow-lg);
}

.toast-success {
    background: var(--success);
}

.toast-error {
    background: var(--danger);
}

.toast-info {
    background: var(--primary);
}

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

    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideOut {
    from {
        transform: translateX(0);
        opacity: 1;
    }

    to {
        transform: translateX(100%);
        opacity: 0;
    }
}

/* ============================
   Additional Pages
   ============================ */
.page-hero {
    padding: 7rem 0 3rem;
    background: var(--gray-50);
    text-align: center;
}

.page-hero h1 {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--secondary);
    margin-bottom: 0.5rem;
}

.page-hero p {
    color: var(--gray-500);
    font-size: 1.1rem;
}

.page-content {
    padding: 3rem 0;
}

.page-content h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--secondary);
    margin: 2rem 0 1rem;
}

.page-content p {
    color: var(--gray-600);
    margin-bottom: 1rem;
    line-height: 1.8;
}

/* FAQ Accordion */
.faq-item {
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    margin-bottom: 0.75rem;
    overflow: hidden;
}

.faq-question {
    padding: 1.25rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--white);
    transition: var(--transition);
}

.faq-question:hover {
    background: var(--gray-50);
}

.faq-answer {
    padding: 0 1.25rem;
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 300px;
    padding: 0 1.25rem 1.25rem;
}

.faq-item.active .faq-question {
    background: var(--primary-50);
    color: var(--primary);
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
}

.empty-state i {
    font-size: 4rem;
    color: var(--gray-300);
    margin-bottom: 1rem;
}

.empty-state h3 {
    font-size: 1.25rem;
    color: var(--gray-600);
    margin-bottom: 0.5rem;
}

.empty-state p {
    color: var(--gray-400);
    margin-bottom: 1.5rem;
}

/* ============================
   Animations
   ============================ */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ============================
   Mobile Menu
   ============================ */
.mobile-menu {
    display: none;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--white);
    padding: 1.5rem;
    box-shadow: var(--shadow-lg);
    z-index: 999;
    border-top: 1px solid var(--gray-200);
}

.mobile-menu.active {
    display: block;
}

.mobile-menu a {
    display: block;
    padding: 0.75rem 0;
    font-weight: 500;
    color: var(--gray-700);
    border-bottom: 1px solid var(--gray-100);
}

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

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

    .hero-image {
        max-width: 500px;
        margin: 0 auto;
    }

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

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

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

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

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

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

    .store-sidebar {
        position: static;
    }

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

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

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

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

    .admin-sidebar {
        display: none;
    }

    .admin-main {
        margin-left: 0;
    }
}

@media (max-width: 768px) {
    .section {
        padding: 3rem 0;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .nav-links {
        display: none;
    }

    .hamburger {
        display: flex;
    }

    .hero {
        padding: 6rem 0 3rem;
    }

    .hero-content h1 {
        font-size: 2.25rem;
    }

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

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

    .steps-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .steps-grid::before {
        display: none;
    }

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

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

    .footer-bottom {
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
    }

    .cta-section h2 {
        font-size: 1.75rem;
    }

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

    .cart-page>.container>div,
    .checkout-page>.container>div {
        grid-template-columns: 1fr !important;
    }

    .stat-cards {
        grid-template-columns: 1fr;
    }

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

    .data-table {
        font-size: 0.8rem;
    }

    .data-table th,
    .data-table td {
        padding: 0.5rem;
    }
}

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 1.75rem;
    }

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

    .hero-stats {
        flex-direction: column;
        gap: 1rem;
    }

    .btn-lg {
        padding: 0.875rem 1.5rem;
        font-size: 1rem;
        width: 100%;
    }

    .auth-card {
        padding: 1.5rem;
    }
}

/* Utility: loading spinner */
.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--gray-200);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
    margin: 2rem auto;
}

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

/* Modal */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 10000;
    display: none;
    align-items: center;
    justify-content: center;
}

.modal-overlay.active {
    display: flex;
}

.modal {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: 2rem;
    max-width: 500px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.modal-header h2 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--secondary);
}

.modal-close {
    background: var(--gray-100);
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    border: none;
}