/* ============================================
   RANXESS CHEMICAL SOLUTIONS - Main Stylesheet
   Professional Laundry & Textile Solutions
   ============================================ */

/* ============================================
   CSS VARIABLES - Modern Color Scheme
   ============================================ */
:root {
    /* Primary Colors - Modern Purple/Blue Gradient */
    --primary-blue: #667eea;
    --primary-blue-dark: #764ba2;
    --primary-blue-light: #8899ff;
    
    /* Secondary Colors */
    --primary-green: #28a745;
    --primary-green-dark: #1e7e34;
    --primary-green-light: #34ce57;
    
    /* Accent Colors */
    --accent-yellow: #f59e0b;
    --accent-orange: #f97316;
    --accent-pink: #ec4899;
    
    /* Neutrals */
    --white: #ffffff;
    --light-bg: #f8fafc;
    --light-gray: #e2e8f0;
    --gray: #64748b;
    --dark-gray: #475569;
    --dark: #1e293b;
    --black: #0f172a;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.15);
    --shadow-xl: 0 20px 40px rgba(0,0,0,0.2);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-round: 50%;
    
    /* Container */
    --container-max: 1200px;
    
    /* Header */
    --header-height: 80px;
}

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

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

body {
    font-family: 'Open Sans', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--dark);
    background-color: var(--white);
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Poppins', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    font-weight: 600;
    line-height: 1.3;
    color: var(--dark);
}

h1 { font-size: 3rem; }
h2 { font-size: 2.25rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1rem; }
h6 { font-size: 0.875rem; }

p {
    margin-bottom: 1rem;
}

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

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

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

ul {
    list-style: none;
}

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

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

.section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
}

.section-title h2 {
    position: relative;
    display: inline-block;
    padding-bottom: 15px;
    margin-bottom: 20px;
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-blue), var(--primary-blue-dark));
    border-radius: 2px;
}

.section-title p {
    color: var(--gray);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    font-weight: 600;
    font-size: 1rem;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-normal);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    gap: 8px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-blue-dark));
    color: var(--white);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-blue-dark), var(--primary-blue));
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.5);
    color: var(--white);
}

.btn-success {
    background: linear-gradient(135deg, var(--primary-green), var(--primary-green-dark));
    color: var(--white);
    box-shadow: 0 4px 15px rgba(40, 167, 69, 0.4);
}

.btn-success:hover {
    background: linear-gradient(135deg, var(--primary-green-dark), var(--primary-green));
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(40, 167, 69, 0.5);
    color: var(--white);
}

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

.btn-outline:hover {
    background: var(--primary-blue);
    color: var(--white);
    transform: translateY(-3px);
}

.btn-sm {
    padding: 10px 20px;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 18px 45px;
    font-size: 1.125rem;
}

.btn-block {
    width: 100%;
}

/* ============================================
   HEADER & NAVIGATION
   ============================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: var(--transition-normal);
}

.header.scrolled {
    height: 70px;
    box-shadow: var(--shadow-md);
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 20px;
}

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

.logo-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-blue-dark));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-weight: 700;
    font-size: 1.5rem;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.logo-text {
    font-family: 'Poppins', sans-serif;
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--primary-blue);
    line-height: 1.2;
}

.logo-text span {
    display: block;
    font-size: 0.7rem;
    font-weight: 400;
    color: var(--primary-blue-dark);
    text-transform: uppercase;
    letter-spacing: 1px;
}

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

.nav-link {
    font-weight: 500;
    color: var(--dark);
    position: relative;
    padding: 8px 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-blue), var(--primary-blue-dark));
    transition: var(--transition-normal);
}

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

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

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

.cart-icon {
    position: relative;
    font-size: 1.5rem;
    color: var(--dark);
    padding: 8px;
    cursor: pointer;
    transition: var(--transition-fast);
}

.cart-icon:hover {
    color: var(--primary-blue);
    transform: scale(1.1);
}

.cart-badge {
    position: absolute;
    top: 0;
    right: 0;
    background: linear-gradient(135deg, var(--primary-green), var(--primary-green-dark));
    color: var(--white);
    font-size: 0.7rem;
    font-weight: 600;
    width: 22px;
    height: 22px;
    border-radius: var(--radius-round);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 8px rgba(40, 167, 69, 0.4);
}

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
    padding: 10px;
    background: none;
    border: none;
}

.mobile-toggle span {
    width: 28px;
    height: 3px;
    background: var(--dark);
    border-radius: 3px;
    transition: var(--transition-fast);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.95), rgba(118, 75, 162, 0.9)),
                url('https://images.unsplash.com/photo-1545173168-9f1947eebb7f?w=1920') center/cover;
    padding-top: var(--header-height);
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.3);
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 750px;
    color: var(--white);
}

.hero-badge {
    display: inline-block;
    background: rgba(255,255,255,0.2);
    backdrop-filter: blur(10px);
    padding: 10px 25px;
    border-radius: var(--radius-xl);
    font-size: 0.95rem;
    margin-bottom: 25px;
    animation: fadeInDown 0.8s ease;
    border: 1px solid rgba(255,255,255,0.3);
}

.hero h1 {
    font-size: 3.5rem;
    color: var(--white);
    margin-bottom: 25px;
    animation: fadeInUp 0.8s ease 0.2s both;
    line-height: 1.15;
}

.hero h1 span {
    background: linear-gradient(90deg, #fbbf24, #f59e0b);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: 35px;
    opacity: 0.95;
    animation: fadeInUp 0.8s ease 0.4s both;
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.6s both;
}

.hero-buttons .btn {
    padding: 16px 40px;
}

/* ============================================
   FEATURES SECTION
   ============================================ */
.features {
    background: var(--light-bg);
    padding: 80px 0;
}

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

.feature-card {
    background: var(--white);
    padding: 35px;
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
    border: 1px solid var(--light-gray);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-blue);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 25px;
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-blue-dark));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.2rem;
    color: var(--white);
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.3);
    transition: var(--transition-normal);
}

.feature-card:hover .feature-icon {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 12px 30px rgba(102, 126, 234, 0.5);
}

.feature-card h4 {
    margin-bottom: 12px;
}

.feature-card p {
    color: var(--gray);
    margin-bottom: 0;
    font-size: 0.95rem;
}

/* ============================================
   PRODUCTS SECTION - Enhanced Mobile
   ============================================ */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 25px;
    padding: 10px;
    touch-action: pan-y pinch-zoom;
}

.product-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
    border: 1px solid var(--light-gray);
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
}

.product-card:active {
    transform: scale(0.98);
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 50px rgba(102, 126, 234, 0.2);
    border-color: var(--primary-blue);
}

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

.product-image {
    position: relative;
    height: 240px;
    background: linear-gradient(135deg, #f5f7fa 0%, #e4e8ec 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding: 20px;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: transform 0.4s ease;
}

.product-placeholder {
    font-size: 4rem;
    color: var(--primary-blue);
    opacity: 0.4;
}

.product-badge {
    position: absolute;
    top: 12px;
    left: 12px;
    background: linear-gradient(135deg, var(--primary-green), var(--primary-green-dark));
    color: var(--white);
    padding: 5px 12px;
    border-radius: var(--radius-sm);
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    box-shadow: 0 2px 8px rgba(40, 167, 69, 0.3);
}

.product-info {
    padding: 20px;
}

.product-category {
    font-size: 0.75rem;
    color: var(--primary-blue);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 6px;
    font-weight: 600;
}

.product-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--dark);
    line-height: 1.4;
}

.product-description {
    font-size: 0.85rem;
    color: var(--gray);
    margin-bottom: 15px;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.product-size-select {
    width: 100%;
    padding: 10px;
    border: 2px solid var(--light-gray);
    border-radius: var(--radius-sm);
    margin-bottom: 15px;
    font-size: 0.9rem;
    background: var(--white);
    transition: var(--transition-fast);
    cursor: pointer;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2364748b' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 35px;
}

.product-size-select:focus {
    border-color: var(--primary-blue);
    outline: none;
}

.product-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

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

.product-price span {
    font-size: 0.8rem;
    color: var(--gray);
    font-weight: 400;
}

.btn-add-cart {
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-blue-dark));
    color: var(--white);
    border: none;
    padding: 10px 18px;
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 6px;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
    font-size: 0.85rem;
}

.btn-add-cart:hover {
    background: linear-gradient(135deg, var(--primary-blue-dark), var(--primary-blue));
    transform: scale(1.05);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.5);
}

.btn-add-cart:active {
    transform: scale(0.95);
}

/* ============================================
   CART PAGE
   ============================================ */
.cart-section {
    padding: 140px 0 60px;
}

.cart-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 30px;
}

.cart-items {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    border: 1px solid var(--light-gray);
}

.cart-header {
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-blue-dark));
    color: var(--white);
    padding: 25px 35px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.cart-header h3 {
    color: var(--white);
    margin: 0;
}

.cart-item {
    display: flex;
    align-items: center;
    padding: 25px 35px;
    border-bottom: 1px solid var(--light-gray);
    gap: 25px;
    transition: var(--transition-fast);
}

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

.cart-item-image {
    width: 100px;
    height: 100px;
    background: var(--light-bg);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: var(--primary-blue);
}

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

.cart-item-title {
    font-weight: 600;
    margin-bottom: 5px;
    font-size: 1.1rem;
}

.cart-item-size {
    font-size: 0.9rem;
    color: var(--gray);
}

.cart-item-price {
    font-weight: 700;
    color: var(--primary-blue);
    font-size: 1.15rem;
}

.cart-item-quantity {
    display: flex;
    align-items: center;
    gap: 12px;
}

.quantity-btn {
    width: 38px;
    height: 38px;
    border: 2px solid var(--light-gray);
    background: var(--white);
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    transition: var(--transition-fast);
}

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

.quantity-value {
    width: 45px;
    text-align: center;
    font-weight: 600;
    font-size: 1.1rem;
}

.cart-item-remove {
    color: #dc3545;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.35rem;
    padding: 10px;
    transition: var(--transition-fast);
    border-radius: var(--radius-sm);
}

.cart-item-remove:hover {
    background: #fee2e2;
    transform: scale(1.15);
}

.cart-summary {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 35px;
    height: fit-content;
    position: sticky;
    top: 110px;
    border: 1px solid var(--light-gray);
}

.cart-summary h3 {
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid var(--light-gray);
}

.summary-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 18px;
    font-size: 1rem;
}

.summary-row.total {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--primary-blue);
    padding-top: 20px;
    border-top: 2px solid var(--light-gray);
    margin-top: 20px;
}

.cart-empty {
    text-align: center;
    padding: 80px 30px;
}

.cart-empty-icon {
    font-size: 6rem;
    color: var(--light-gray);
    margin-bottom: 25px;
}

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

.cart-empty p {
    color: var(--gray);
    margin-bottom: 30px;
}

/* ============================================
   CHECKOUT PAGE
   ============================================ */
.checkout-section {
    padding: 140px 0 60px;
}

.checkout-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 30px;
}

.checkout-form {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 35px;
    border: 1px solid var(--light-gray);
}

.checkout-form h3 {
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid var(--light-gray);
}

.form-group {
    margin-bottom: 22px;
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--dark);
}

.form-group label span {
    color: #dc3545;
}

.form-control {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid var(--light-gray);
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 22px;
}

.checkout-summary {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 35px;
    height: fit-content;
    position: sticky;
    top: 110px;
    border: 1px solid var(--light-gray);
}

.checkout-summary h3 {
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid var(--light-gray);
}

.order-item {
    display: flex;
    justify-content: space-between;
    margin-bottom: 18px;
    padding-bottom: 18px;
    border-bottom: 1px solid var(--light-gray);
}

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

.order-item-name {
    font-weight: 500;
}

.order-item-qty {
    color: var(--gray);
    font-size: 0.9rem;
}

.order-item-price {
    font-weight: 600;
}

/* ============================================
   CONTACT PAGE
   ============================================ */
.contact-section {
    padding: 140px 0 60px;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.contact-info {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 45px;
    border: 1px solid var(--light-gray);
}

.contact-info h3 {
    margin-bottom: 35px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 22px;
    margin-bottom: 30px;
}

.contact-icon {
    width: 55px;
    height: 55px;
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-blue-dark));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.35rem;
    flex-shrink: 0;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.contact-details h4 {
    margin-bottom: 6px;
}

.contact-details p {
    margin-bottom: 0;
    color: var(--gray);
}

.contact-map {
    margin-top: 35px;
    height: 220px;
    background: var(--light-bg);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray);
}

.contact-form {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 45px;
    border: 1px solid var(--light-gray);
}

.contact-form h3 {
    margin-bottom: 35px;
}

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

/* ============================================
   AUTH PAGES (LOGIN/REGISTER)
   ============================================ */
.auth-section {
    padding: 140px 0 60px;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.auth-container {
    max-width: 480px;
    margin: 0 auto;
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    padding: 45px;
}

.auth-header {
    text-align: center;
    margin-bottom: 35px;
}

.auth-header .logo {
    justify-content: center;
    margin-bottom: 25px;
}

.auth-header h2 {
    font-size: 1.85rem;
    margin-bottom: 12px;
}

.auth-header p {
    color: var(--gray);
    margin-bottom: 0;
}

.auth-tabs {
    display: flex;
    margin-bottom: 35px;
    border-bottom: 2px solid var(--light-gray);
}

.auth-tab {
    flex: 1;
    padding: 16px;
    text-align: center;
    font-weight: 600;
    color: var(--gray);
    cursor: pointer;
    border-bottom: 3px solid transparent;
    margin-bottom: -2px;
    transition: var(--transition-fast);
}

.auth-tab.active {
    color: var(--primary-blue);
    border-bottom-color: var(--primary-blue);
}

.auth-form {
    display: none;
}

.auth-form.active {
    display: block;
}

.auth-form .form-group {
    margin-bottom: 22px;
}

.auth-form .btn {
    width: 100%;
    padding: 16px;
    margin-top: 15px;
}

.auth-divider {
    text-align: center;
    margin: 30px 0;
    color: var(--gray);
    position: relative;
}

.auth-divider::before,
.auth-divider::after {
    content: '';
    position: absolute;
    top: 50%;
    width: 40%;
    height: 1px;
    background: var(--light-gray);
}

.auth-divider span {
    background: var(--white);
    padding: 0 18px;
    position: relative;
    z-index: 1;
}

.social-login {
    display: flex;
    gap: 18px;
}

.social-btn {
    flex: 1;
    padding: 14px;
    border: 2px solid var(--light-gray);
    border-radius: var(--radius-md);
    background: var(--white);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-weight: 500;
    transition: var(--transition-fast);
}

.social-btn:hover {
    background: var(--light-bg);
    border-color: var(--gray);
}

/* ============================================
   DASHBOARD
   ============================================ */
.dashboard-section {
    padding: 140px 0 60px;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 35px;
}

.dashboard-sidebar {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 35px;
    height: fit-content;
    position: sticky;
    top: 110px;
    border: 1px solid var(--light-gray);
}

.user-profile {
    text-align: center;
    padding-bottom: 30px;
    margin-bottom: 30px;
    border-bottom: 1px solid var(--light-gray);
}

.user-avatar {
    width: 90px;
    height: 90px;
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-blue-dark));
    border-radius: var(--radius-round);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: var(--white);
    font-size: 2.2rem;
    font-weight: 600;
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.3);
}

.user-name {
    font-weight: 600;
    font-size: 1.15rem;
    margin-bottom: 6px;
}

.user-email {
    font-size: 0.9rem;
    color: var(--gray);
}

.dashboard-menu {
    margin-bottom: 30px;
}

.dashboard-menu-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 18px;
    border-radius: var(--radius-md);
    color: var(--dark);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-fast);
    margin-bottom: 8px;
}

.dashboard-menu-item:hover,
.dashboard-menu-item.active {
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-blue-dark));
    color: var(--white);
}

.dashboard-menu-item i {
    width: 22px;
    text-align: center;
}

.btn-logout {
    width: 100%;
    padding: 14px;
    background: #dc3545;
    color: var(--white);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition-fast);
}

.btn-logout:hover {
    background: #c82333;
    transform: translateY(-2px);
}

.dashboard-content {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 35px;
    border: 1px solid var(--light-gray);
}

.dashboard-header {
    margin-bottom: 35px;
    padding-bottom: 25px;
    border-bottom: 1px solid var(--light-gray);
}

.dashboard-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
    margin-bottom: 35px;
}

.stat-card {
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-blue-dark));
    padding: 30px;
    border-radius: var(--radius-lg);
    text-align: center;
    color: var(--white);
}

.stat-icon {
    width: 65px;
    height: 65px;
    background: rgba(255,255,255,0.2);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 18px;
    font-size: 1.6rem;
}

.stat-value {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 6px;
}

.stat-label {
    font-size: 0.95rem;
    opacity: 0.9;
}

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

.orders-table th,
.orders-table td {
    padding: 18px;
    text-align: left;
    border-bottom: 1px solid var(--light-gray);
}

.orders-table th {
    background: var(--light-bg);
    font-weight: 600;
    color: var(--dark);
}

.orders-table tr:hover {
    background: var(--light-bg);
}

.order-status {
    display: inline-block;
    padding: 6px 14px;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 600;
}

.order-status.pending {
    background: #fef3c7;
    color: #92400e;
}

.order-status.completed {
    background: #d1fae5;
    color: #065f46;
}

.order-status.cancelled {
    background: #fee2e2;
    color: #991b1b;
}

/* ============================================
   ADMIN PANEL
   ============================================ */
.admin-section {
    padding: 140px 0 60px;
}

.admin-grid {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 35px;
}

.admin-sidebar {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 35px;
    height: fit-content;
    border: 1px solid var(--light-gray);
}

.admin-menu-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 18px;
    border-radius: var(--radius-md);
    color: var(--dark);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-fast);
    margin-bottom: 8px;
}

.admin-menu-item:hover,
.admin-menu-item.active {
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-blue-dark));
    color: var(--white);
}

.admin-content {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 35px;
    border: 1px solid var(--light-gray);
}

.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 35px;
    padding-bottom: 25px;
    border-bottom: 1px solid var(--light-gray);
}

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

.products-table th,
.products-table td {
    padding: 18px;
    text-align: left;
    border-bottom: 1px solid var(--light-gray);
}

.products-table th {
    background: var(--light-bg);
    font-weight: 600;
}

.products-table tr:hover {
    background: var(--light-bg);
}

.product-actions {
    display: flex;
    gap: 12px;
}

.product-actions button {
    padding: 8px 14px;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.9rem;
    transition: var(--transition-fast);
}

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

.btn-delete {
    background: #dc3545;
    color: var(--white);
}

.btn-edit:hover,
.btn-delete:hover {
    opacity: 0.85;
    transform: translateY(-2px);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background: linear-gradient(135deg, #1e293b, #0f172a);
    color: var(--white);
    padding: 70px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 45px;
    margin-bottom: 50px;
}

.footer-about .logo {
    margin-bottom: 22px;
}

.footer-about .logo-text {
    color: var(--white);
}

.footer-about p {
    color: rgba(255,255,255,0.7);
    margin-bottom: 22px;
    line-height: 1.7;
}

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

.social-link {
    width: 45px;
    height: 45px;
    background: rgba(255,255,255,0.1);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    transition: var(--transition-fast);
    font-size: 1.2rem;
}

.social-link:hover {
    background: var(--primary-blue);
    transform: translateY(-4px);
}

.footer-title {
    font-size: 1.15rem;
    margin-bottom: 22px;
    color: var(--white);
}

.footer-links li {
    margin-bottom: 14px;
}

.footer-links a {
    color: rgba(255,255,255,0.7);
    transition: var(--transition-fast);
}

.footer-links a:hover {
    color: var(--primary-blue);
    padding-left: 6px;
}

.footer-contact p {
    display: flex;
    align-items: center;
    gap: 12px;
    color: rgba(255,255,255,0.7);
    margin-bottom: 14px;
}

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid rgba(255,255,255,0.1);
    text-align: center;
    color: rgba(255,255,255,0.5);
    font-size: 0.95rem;
}

/* ============================================
   WHATSAPP FLOATING BUTTON
   ============================================ */
.whatsapp-float {
    position: fixed;
    bottom: 35px;
    right: 35px;
    width: 65px;
    height: 65px;
    background: linear-gradient(135deg, #25D366, #20BD5A);
    border-radius: var(--radius-round);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 2.2rem;
    box-shadow: var(--shadow-xl);
    z-index: 999;
    cursor: pointer;
    transition: var(--transition-normal);
    animation: pulse 2s infinite;
}

.whatsapp-float:hover {
    transform: scale(1.15);
    box-shadow: 0 15px 35px rgba(37, 211, 102, 0.5);
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.5);
    }
    70% {
        box-shadow: 0 0 0 18px rgba(37, 211, 102, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(37, 211, 102, 0);
    }
}

/* ============================================
   MODALS & POPUPS
   ============================================ */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.6);
    z-index: 2000;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.3s ease;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: 45px;
    max-width: 500px;
    width: 90%;
    text-align: center;
    animation: slideUp 0.3s ease;
}

.modal-icon {
    width: 90px;
    height: 90px;
    background: linear-gradient(135deg, var(--primary-green), var(--primary-blue));
    border-radius: var(--radius-round);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 30px;
    color: var(--white);
    font-size: 2.5rem;
}

.modal h3 {
    margin-bottom: 18px;
}

.modal p {
    color: var(--gray);
    margin-bottom: 30px;
}

/* ============================================
   NOTIFICATIONS / TOAST
   ============================================ */
.toast-container {
    position: fixed;
    top: 110px;
    right: 35px;
    z-index: 3000;
}

.toast {
    background: var(--white);
    border-radius: var(--radius-md);
    padding: 18px 28px;
    margin-bottom: 12px;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 16px;
    min-width: 320px;
    animation: slideInRight 0.4s ease;
    border-left: 4px solid var(--primary-blue);
}

.toast.success {
    border-left-color: var(--primary-green);
}

.toast.error {
    border-left-color: #dc3545;
}

.toast.info {
    border-left-color: var(--primary-blue);
}

.toast-icon {
    font-size: 1.35rem;
}

.toast.success .toast-icon { color: var(--primary-green); }
.toast.error .toast-icon { color: #dc3545; }
.toast.info .toast-icon { color: var(--primary-blue); }

/* ============================================
   PRODUCT DETAILS PAGE
   ============================================ */
.product-details-section {
    padding: 140px 0 60px;
}

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

.product-details-image {
    background: var(--light-bg);
    border-radius: var(--radius-lg);
    height: 550px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 9rem;
    color: var(--primary-blue);
    opacity: 0.3;
}

.product-details-info h1 {
    font-size: 2.2rem;
    margin-bottom: 12px;
}

.product-details-category {
    color: var(--primary-blue);
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 25px;
    font-weight: 600;
}

.product-details-price {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: 30px;
}

.product-details-description {
    color: var(--gray);
    margin-bottom: 30px;
    line-height: 1.8;
}

.product-details-options {
    margin-bottom: 35px;
}

.product-details-options .form-group {
    margin-bottom: 22px;
}

.quantity-selector {
    display: flex;
    align-items: center;
    gap: 18px;
}

.quantity-selector label {
    font-weight: 600;
}

.quantity-controls {
    display: flex;
    align-items: center;
    gap: 12px;
}

.product-details-buttons {
    display: flex;
    gap: 18px;
    margin-top: 35px;
}

.product-details-buttons .btn {
    flex: 1;
}

/* ============================================
   WELCOME SECTION
   ============================================ */
.welcome-section {
    background: linear-gradient(135deg, var(--white) 0%, var(--light-bg) 100%);
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}

.welcome-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

.particle {
    position: absolute;
    top: 100%;
    font-size: 1.5rem;
    opacity: 0.6;
    animation: particleFloat 8s ease-in-out infinite;
}

@keyframes particleFloat {
    0% {
        transform: translateY(0) rotate(0deg);
        opacity: 0;
    }
    10% {
        opacity: 0.6;
    }
    90% {
        opacity: 0.6;
    }
    100% {
        transform: translateY(-600px) rotate(360deg);
        opacity: 0;
    }
}

.welcome-chemicals {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 30px;
}

.chemical-bubble {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1), rgba(118, 75, 162, 0.1));
    border-radius: 50%;
    animation: bubbleRise 3s ease-in-out infinite;
    position: relative;
}

.chemical-bubble::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 30px;
    height: 30px;
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-blue-dark));
    border-radius: 50%;
    opacity: 0.3;
}

.chemical-bubble:nth-child(1)::after { content: '🧴'; position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); font-size: 1.5rem; }
.chemical-bubble:nth-child(2)::after { content: '🧪'; position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); font-size: 1.5rem; }
.chemical-bubble:nth-child(3)::after { content: '✨'; position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); font-size: 1.5rem; }
.chemical-bubble:nth-child(4)::after { content: '💎'; position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); font-size: 1.5rem; }
.chemical-bubble:nth-child(5)::after { content: '💧'; position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); font-size: 1.5rem; }

@keyframes bubbleRise {
    0%, 100% {
        transform: translateY(0) scale(1);
        opacity: 0.5;
    }
    50% {
        transform: translateY(-20px) scale(1.1);
        opacity: 0.8;
    }
}

.welcome-section::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(102, 126, 234, 0.08) 0%, transparent 70%);
    animation: welcomeFloat 10s ease-in-out infinite;
}

.welcome-section::after {
    content: '';
    position: absolute;
    bottom: -30%;
    right: -5%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(118, 75, 162, 0.06) 0%, transparent 70%);
    animation: welcomeFloat 8s ease-in-out infinite reverse;
}

@keyframes welcomeFloat {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-40px) rotate(5deg); }
}

.welcome-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.welcome-text-wrapper {
    margin-bottom: 40px;
}

.welcome-title {
    font-size: 2.8rem;
    font-weight: 700;
    line-height: 1.4;
    margin-bottom: 20px;
    color: var(--dark);
}

.welcome-line {
    display: block;
    opacity: 0;
    transform: translateY(40px);
    animation: welcomeTextFadeIn 0.8s ease forwards;
}

.welcome-line:nth-child(1) {
    animation-delay: 0.2s;
    background: linear-gradient(90deg, var(--primary-blue), var(--primary-blue-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.welcome-line:nth-child(2) {
    animation-delay: 0.5s;
    color: var(--dark);
}

.welcome-line:nth-child(3) {
    animation-delay: 0.8s;
    color: var(--primary-blue-dark);
    font-size: 2.4rem;
}

@keyframes welcomeTextFadeIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.welcome-subtitle {
    font-size: 1.2rem;
    color: var(--gray);
    opacity: 0;
    animation: welcomeTextFadeIn 0.8s ease 1.1s forwards;
    margin-bottom: 0;
}

.welcome-features {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
    opacity: 0;
    animation: welcomeTextFadeIn 0.8s ease 1.4s forwards;
}

.welcome-feature {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1rem;
    color: var(--dark);
    font-weight: 500;
}

.welcome-feature-icon {
    width: 28px;
    height: 28px;
    background: linear-gradient(135deg, var(--primary-green), var(--primary-green-dark));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 0.85rem;
    font-weight: 700;
}

/* Responsive Welcome Section */
@media (max-width: 768px) {
    .welcome-section {
        padding: 60px 0;
    }
    
    .welcome-title {
        font-size: 2rem;
    }
    
    .welcome-line:nth-child(3) {
        font-size: 1.75rem;
    }
    
    .welcome-subtitle {
        font-size: 1rem;
    }
    
    .welcome-features {
        flex-direction: column;
        gap: 15px;
        align-items: center;
    }
}

/* ============================================
   PRODUCT MODAL
   ============================================ */
.product-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    z-index: 3000;
    align-items: center;
    justify-content: center;
    padding: 20px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.product-modal.active {
    display: flex;
    opacity: 1;
}

.product-modal-content {
    background: var(--white);
    border-radius: var(--radius-xl);
    max-width: 800px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    transform: scale(0.8) translateY(30px);
    transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    box-shadow: 0 25px 80px rgba(0, 0, 0, 0.3);
}

.product-modal.active .product-modal-content {
    transform: scale(1) translateY(0);
}

.product-modal-close {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
    background: var(--light-bg);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--dark);
    transition: var(--transition-fast);
    z-index: 10;
}

.product-modal-close:hover {
    background: var(--primary-blue);
    color: var(--white);
    transform: rotate(90deg);
}

.product-modal-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
}

.product-modal-image {
    background: linear-gradient(135deg, var(--light-bg), #e2e8f0);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 400px;
    padding: 40px;
}

.product-modal-image img {
    width: 100%;
    height: auto;
    max-height: 350px;
    object-fit: contain;
    border-radius: var(--radius-lg);
}

.product-modal-image-placeholder {
    font-size: 8rem;
    color: var(--primary-blue);
    opacity: 0.3;
}

.product-modal-info {
    padding: 40px;
    display: flex;
    flex-direction: column;
}

.product-modal-category {
    font-size: 0.85rem;
    color: var(--primary-blue);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    font-weight: 600;
    margin-bottom: 10px;
}

.product-modal-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 15px;
    line-height: 1.3;
}

.product-modal-price {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: 20px;
}

.product-modal-price span {
    font-size: 1rem;
    color: var(--gray);
    font-weight: 400;
}

.product-modal-description {
    color: var(--gray);
    line-height: 1.8;
    margin-bottom: 25px;
    flex-grow: 1;
}

.product-modal-sizes {
    margin-bottom: 25px;
}

.product-modal-sizes label {
    display: block;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--dark);
}

.product-modal-size-options {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.product-modal-size-btn {
    padding: 10px 20px;
    border: 2px solid var(--light-gray);
    background: var(--white);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-weight: 500;
    transition: var(--transition-fast);
}

.product-modal-size-btn:hover {
    border-color: var(--primary-blue);
}

.product-modal-size-btn.active {
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-blue-dark));
    color: var(--white);
    border-color: transparent;
}

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

.product-modal-actions .btn {
    flex: 1;
    padding: 14px 24px;
}

@media (max-width: 768px) {
    .product-modal-grid {
        grid-template-columns: 1fr;
    }
    
    .product-modal-image {
        min-height: 250px;
    }
    
    .product-modal-info {
        padding: 25px;
    }
    
    .product-modal-title {
        font-size: 1.4rem;
    }
    
    .product-modal-price {
        font-size: 1.5rem;
    }
    
    .product-modal-actions {
        flex-direction: column;
    }
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(35px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-35px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(120px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

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

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

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

/* ============================================
   RESPONSIVE DESIGN - Mobile & Tablet
   ============================================ */
@media (max-width: 992px) {
    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }
    
    :root {
        --header-height: 70px;
    }
    
    .hero h1 {
        font-size: 2.75rem;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: 45px;
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .cart-grid,
    .checkout-grid,
    .dashboard-grid,
    .admin-grid,
    .product-details-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .dashboard-sidebar,
    .admin-sidebar {
        position: static;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: var(--header-height);
        left: -100%;
        width: 100%;
        height: calc(100vh - var(--header-height));
        background: var(--white);
        flex-direction: column;
        justify-content: flex-start;
        padding: 35px;
        transition: var(--transition-normal);
        box-shadow: var(--shadow-lg);
        gap: 0;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-link {
        width: 100%;
        padding: 18px 0;
        border-bottom: 1px solid var(--light-gray);
    }
    
    .mobile-toggle {
        display: flex;
    }
    
    .mobile-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(6px, 6px);
    }
    
    .mobile-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(6px, -6px);
    }
    
    .hero {
        min-height: 85vh;
    }
    
    .hero h1 {
        font-size: 2.25rem;
    }
    
    .hero p {
        font-size: 1.05rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .hero-buttons .btn {
        width: 100%;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .feature-card {
        padding: 30px;
    }
    
    .dashboard-stats {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 35px;
    }
    
    .auth-container {
        padding: 30px 25px;
    }
    
    .cart-item {
        flex-direction: column;
        text-align: center;
        gap: 15px;
    }
    
    .cart-item-quantity {
        justify-content: center;
    }
    
    .product-details-buttons {
        flex-direction: column;
    }
    
    .whatsapp-float {
        bottom: 25px;
        right: 25px;
        width: 55px;
        height: 55px;
        font-size: 1.8rem;
    }
    
    .toast-container {
        right: 15px;
        left: 15px;
    }
    
    .toast {
        min-width: auto;
    }
}

@media (max-width: 576px) {
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    
    .section {
        padding: 60px 0;
    }
    
    .section-title {
        margin-bottom: 35px;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .logo-icon {
        width: 42px;
        height: 42px;
        font-size: 1.25rem;
    }
    
    .logo-text {
        font-size: 1.1rem;
    }
    
    .header-container {
        padding: 0 15px;
    }
    
    .btn {
        padding: 12px 24px;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .stat-value {
        font-size: 1.8rem;
    }
    
    .cart-header,
    .cart-item {
        padding: 20px;
    }
}