/* ===== ROOT VARIABLES ===== */
:root {
    --primary-dark: #0a0f1a;
    --primary-blue: #141b2d;
    --accent-green: #00d4aa;
    --accent-green-dark: #00b894;
    --accent-green-light: #55efc4;
    --accent-gold: #ffd700;
    --text-light: #ffffff;
    --text-dark: #0a0f1a;
    --text-muted: #6b7280;
    --card-bg: #ffffff;
    --card-border: #e5e7eb;
    --gold: #f59e0b;
    --bg-light: #f9fafb;
    --gradient-green: linear-gradient(135deg, #00d4aa 0%, #00b894 100%);
    --gradient-premium: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-gold: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --shadow-lg: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-card: 0 10px 40px rgba(0, 0, 0, 0.08);
    --shadow-premium: 0 20px 60px rgba(0, 212, 170, 0.15);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', sans-serif;
    background: linear-gradient(180deg, #f9fafb 0%, #f3f4f6 100%);
    color: var(--text-dark);
    line-height: 1.7;
    overflow-x: hidden;
}

/* ===== NAVBAR ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    z-index: 1000;
    padding: 18px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.05);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.logo-icon {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--accent-green);
    box-shadow: 0 2px 10px rgba(0, 212, 170, 0.3);
}

.logo-text {
    font-size: 22px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-dark) 0%, #374151 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.5px;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 40px;
}

.nav-links a {
    color: var(--text-dark);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
    font-size: 0.95rem;
}

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

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-green) 0%, var(--accent-green-dark) 100%);
    transition: width 0.3s ease;
    border-radius: 1px;
}

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

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--primary-dark);
    border-radius: 2px;
    transition: all 0.3s ease;
}

/* ===== HERO SECTION ===== */
.hero {
    min-height: 25vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 80px 20px 40px;
    position: relative;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(10, 15, 26, 0.92) 0%, rgba(20, 27, 45, 0.88) 100%);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 900px;
}

.hero-badge {
    display: inline-block;
    background: rgba(0, 212, 170, 0.15);
    color: var(--accent-green);
    padding: 10px 24px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 24px;
    border: 1px solid rgba(0, 212, 170, 0.3);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.hero-content h1 {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: 24px;
    color: var(--text-light);
    line-height: 1.1;
    letter-spacing: -1px;
}

.hero-content p {
    font-size: 1.15rem;
    color: rgba(255, 255, 255, 0.75);
    margin-bottom: 36px;
    max-width: 650px;
    margin-left: auto;
    margin-right: auto;
}

.cta-btn {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 18px 44px;
    background: linear-gradient(135deg, var(--accent-green) 0%, var(--accent-green-dark) 100%);
    color: var(--text-light);
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    border-radius: 50px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 8px 30px rgba(0, 212, 170, 0.4);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.cta-btn:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 15px 40px rgba(0, 212, 170, 0.5);
}

/* ===== PRODUCTS SECTION ===== */
.products {
    padding: 50px 20px;
    background: linear-gradient(180deg, #ffffff 0%, #f9fafb 100%);
}

.section-header {
    text-align: center;
    margin-bottom: 40px;
}

.section-header h2 {
    font-size: 2.8rem;
    margin-bottom: 16px;
    position: relative;
    display: inline-block;
    color: var(--primary-dark);
    font-weight: 700;
    letter-spacing: -0.5px;
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: -12px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-green) 0%, var(--accent-green-dark) 100%);
    border-radius: 2px;
}

.section-header p {
    color: var(--text-muted);
    font-size: 1.15rem;
    margin-top: 20px;
}

.cards-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

/* Product Card Styles */
.product-card {
    background: var(--card-bg);
    border-radius: 24px;
    overflow: hidden;
    border: 2px solid #000000;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
}

.product-card:hover {
    transform: translateY(-12px);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.12);
    border-color: #000000;
}

.product-card.featured {
    border: 2px solid #000000;
    box-shadow: 0 4px 30px rgba(0, 212, 170, 0.1);
}

.product-card.featured:hover {
    box-shadow: 0 30px 60px rgba(0, 212, 170, 0.2);
    border-color: var(--accent-green);
}

.card-badge {
    position: absolute;
    top: 24px;
    right: 24px;
    background: #10b981;
    color: var(--text-light);
    padding: 10px 20px;
    border-radius: 25px;
    font-size: 0.8rem;
    font-weight: 600;
    z-index: 10;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.card-badge.premium {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    color: var(--text-light);
}

.card-image {
    display: block;
    height: 220px;
    position: relative;
    overflow: hidden;
    border-radius: 16px;
    margin: 16px 16px 0 16px;
    cursor: pointer;
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.image-placeholder {
    text-align: center;
}

.placeholder-icon {
    font-size: 3.5rem;
    display: block;
    margin-bottom: 8px;
}

.placeholder-text {
    color: var(--text-muted);
    font-size: 0.85rem;
    font-weight: 500;
}

.premium-bg {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.1) 0%, rgba(217, 119, 6, 0.1) 100%);
    border-radius: 10px;
    padding: 20px 40px;
}

.card-content {
    padding: 28px;
}

.card-content h3 {
    font-size: 1.6rem;
    margin-bottom: 12px;
    color: #000000;
    font-weight: 800;
    letter-spacing: -0.3px;
    text-shadow: 0 1px 2px rgba(0,0,0,0.1);
}

.card-content p {
    color: #333333;
    font-size: 1rem;
    margin-bottom: 18px;
    line-height: 1.7;
    font-weight: 500;
}

.features-list {
    list-style: none;
    margin-bottom: 28px;
}

.features-list li {
    padding: 10px 0;
    font-size: 1rem;
    color: #222222;
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 500;
}

.check-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    background: linear-gradient(135deg, #00d4aa 0%, #00b894 100%);
    border-radius: 50%;
    color: #ffffff;
    font-weight: 800;
    font-size: 0.8rem;
}

.price-row {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 24px;
}

.price {
    font-size: 2.2rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--accent-green) 0%, var(--accent-green-dark) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.price-tag {
    background: rgba(0, 212, 170, 0.1);
    color: var(--accent-green);
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.price-tag.premium-tag {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    color: #764ba2;
}

.purchase-btn {
    width: 100%;
    padding: 18px 32px;
    background: linear-gradient(135deg, var(--accent-green) 0%, var(--accent-green-dark) 100%);
    color: #ffffff;
    border: none;
    border-radius: 14px;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    box-shadow: 0 4px 15px rgba(0, 212, 170, 0.25);
    text-decoration: none;
    text-shadow: 0 1px 2px rgba(0,0,0,0.2);
}

.purchase-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 35px rgba(0, 212, 170, 0.35);
}

.purchase-btn svg {
    transition: transform 0.3s ease;
}

.purchase-btn:hover svg {
    transform: translateX(5px);
}

.premium-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.premium-btn:hover {
    box-shadow: 0 15px 35px rgba(102, 126, 234, 0.4);
}

/* ===== CONTACT SECTION ===== */
.contact {
    padding: 100px 20px;
    background: linear-gradient(180deg, #f9fafb 0%, #ffffff 100%);
    border-top: 1px solid rgba(0, 0, 0, 0.04);
    text-align: center;
    border-top: 1px solid var(--card-border);
}

.contact-container {
    max-width: 600px;
    margin: 0 auto;
}

.contact-icon {
    width: 90px;
    height: 90px;
    margin: 0 auto 28px;
    background: linear-gradient(135deg, rgba(0, 212, 170, 0.1) 0%, rgba(0, 184, 148, 0.15) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-green);
    box-shadow: 0 10px 40px rgba(0, 212, 170, 0.15);
}

.contact h2 {
    font-size: 2.2rem;
    margin-bottom: 14px;
    color: var(--primary-dark);
    font-weight: 700;
}

.contact p {
    color: var(--text-muted);
    margin-bottom: 36px;
    font-size: 1.1rem;
}

.whatsapp-btn {
    display: inline-flex;
    align-items: center;
    gap: 14px;
    padding: 18px 42px;
    background: linear-gradient(135deg, #25d366 0%, #128c7e 100%);
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 8px 30px rgba(37, 211, 102, 0.35);
}

.whatsapp-btn:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 15px 40px rgba(37, 211, 102, 0.45);
}

.whatsapp-btn svg {
    flex-shrink: 0;
}

/* ===== FOOTER ===== */
.footer {
    background: linear-gradient(180deg, #0a0f1a 0%, #050810 100%);
    padding: 80px 20px 30px;
    color: var(--text-light);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 50px;
    margin-bottom: 50px;
}

.footer-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-light);
    display: flex;
    align-items: center;
    gap: 12px;
}

.footer-logo-img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--accent-green);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    transition: all 0.3s ease;
    font-size: 0.95rem;
}

.footer-links a:hover {
    color: var(--accent-green);
    padding-left: 8px;
}

.footer-contact p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.95rem;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.4);
    font-size: 0.9rem;
}

/* ===== MODAL STYLES ===== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(10, 15, 26, 0.9);
    z-index: 2000;
    justify-content: center;
    align-items: center;
    backdrop-filter: blur(10px);
}

.modal.active {
    display: flex;
    animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    background: var(--text-light);
    border-radius: 28px;
    padding: 48px;
    max-width: 440px;
    width: 90%;
    position: relative;
    border: none;
    animation: slideUp 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 30px 60px -12px rgba(0, 0, 0, 0.4);
}

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

.close-btn {
    position: absolute;
    top: 16px;
    right: 20px;
    font-size: 1.6rem;
    color: #9ca3af;
    cursor: pointer;
    transition: all 0.3s ease;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: #f3f4f6;
}

.close-btn:hover {
    color: var(--primary-dark);
    background: #e5e7eb;
    transform: rotate(90deg);
}

.modal-header h2 {
    text-align: center;
    margin-bottom: 28px;
    font-size: 1.5rem;
    color: var(--primary-dark);
    font-weight: 700;
}

.modal-body {
    text-align: center;
}

.product-preview {
    width: 110px;
    height: 110px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, var(--accent-green) 0%, var(--accent-green-dark) 100%);
    border-radius: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 12px 30px rgba(0, 212, 170, 0.35);
}

.preview-icon {
    font-size: 3rem;
}

.modal-body h3 {
    margin-bottom: 10px;
    font-size: 1.3rem;
    color: var(--primary-dark);
    font-weight: 600;
}

.modal-price {
    font-size: 2.4rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--accent-green) 0%, var(--accent-green-dark) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 28px;
}

.payment-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.payment-form input {
    padding: 18px 22px;
    background: #f9fafb;
    border: 2px solid #e5e7eb;
    border-radius: 14px;
    color: var(--text-dark);
    font-size: 1rem;
    font-family: 'Poppins', sans-serif;
    transition: all 0.3s ease;
}

.payment-form input:focus {
    outline: none;
    border-color: var(--accent-green);
    box-shadow: 0 0 0 4px rgba(0, 212, 170, 0.1);
    background: #fff;
}

.payment-form input::placeholder {
    color: #9ca3af;
}

.buy-now-btn {
    padding: 20px;
    background: linear-gradient(135deg, var(--accent-green) 0%, var(--accent-green-dark) 100%);
    color: var(--text-light);
    border: none;
    border-radius: 14px;
    font-size: 1.05rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 6px 20px rgba(0, 212, 170, 0.3);
}

.buy-now-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 30px rgba(0, 212, 170, 0.4);
}

/* Success Modal */
.success-modal {
    text-align: center;
}

.success-icon {
    font-size: 5rem;
    margin-bottom: 20px;
    animation: bounceIn 0.5s ease;
}

@keyframes bounceIn {
    0% { transform: scale(0); }
    50% { transform: scale(1.2); }
    100% { transform: scale(1); }
}

.success-modal h2 {
    color: var(--accent-green);
    margin-bottom: 14px;
    font-size: 1.6rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent-green), #34d399);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.success-message {
    font-size: 1.1rem;
    margin-bottom: 8px;
    color: var(--primary-dark);
}

.success-email {
    color: var(--text-muted);
    margin-bottom: 28px;
    font-size: 0.9rem;
}

.close-success-btn {
    padding: 16px 40px;
    background: linear-gradient(135deg, var(--accent-green), #34d399);
    color: var(--text-light);
    border: none;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.close-success-btn:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 12px 30px rgba(16, 185, 129, 0.4);
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 70px;
        right: 0;
        width: 220px;
        height: auto;
        max-height: calc(100vh - 70px);
        background: var(--text-light);
        flex-direction: column;
        align-items: flex-start;
        padding: 20px 25px;
        gap: 15px;
        border-left: 2px solid var(--accent-green);
        border-bottom: 2px solid var(--accent-green);
        border-radius: 0 0 0 15px;
        transform: translateX(100%);
        transition: transform 0.3s ease;
        box-shadow: -5px 10px 30px rgba(0, 0, 0, 0.15);
        z-index: 999;
    }

    .nav-links.active {
        transform: translateX(0);
    }

    .nav-links a {
        font-size: 1rem;
        font-weight: 600;
        padding: 10px 0;
        width: 100%;
        border-bottom: 1px solid rgba(0,0,0,0.08);
    }

    .nav-links li:last-child a {
        border-bottom: none;
    }

    .hamburger {
        display: flex;
    }

    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }

    .hero {
        min-height: auto;
        padding: 80px 20px 30px;
    }

    .hero-badge {
        font-size: 0.7rem;
        padding: 5px 12px;
    }

    .hero-content h1 {
        font-size: 1.5rem;
        line-height: 1.3;
    }

    .hero-content p {
        font-size: 0.85rem;
        display: none;
    }

    .cta-btn {
        padding: 12px 24px;
        font-size: 0.85rem;
    }

    .section-header h2 {
        font-size: 1.8rem;
    }

    .cards-container {
        grid-template-columns: 1fr;
        padding: 0 10px;
        gap: 24px;
    }

    .product-card {
        max-width: 420px;
        margin: 0 auto;
    }

    .card-image {
        height: auto;
        padding: 10px;
    }
    
    .card-image img {
        width: 100%;
        height: auto;
        object-fit: contain;
    }

    .contact-icon {
        width: 64px;
        height: 64px;
    }

    .contact-icon svg {
        width: 32px;
        height: 32px;
    }

    .modal-content {
        padding: 30px 20px;
        margin: 20px;
    }

    .footer-content {
        text-align: center;
    }

    .footer-links {
        align-items: center;
    }
}

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 1.7rem;
    }

    .logo-text {
        font-size: 15px;
    }

    .price {
        font-size: 1.6rem;
    }

    .price-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }

    .modal-price {
        font-size: 1.8rem;
    }

    .whatsapp-btn {
        padding: 14px 28px;
        font-size: 0.9rem;
    }
}

/* ===== LOADING ANIMATION ===== */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid var(--primary-dark);
    border-radius: 50%;
    border-top-color: transparent;
    animation: spin 1s ease-in-out infinite;
}

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

/* ===== PREMIUM EFFECTS ===== */
.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(0, 212, 170, 0.05), transparent);
    opacity: 0;
    transition: opacity 0.4s ease;
    border-radius: inherit;
    pointer-events: none;
    z-index: 0;
}

.product-card:hover::before {
    opacity: 1;
}

.product-card > * {
    position: relative;
    z-index: 1;
}

/* Premium shine effect on buttons */
.buy-btn::before,
.buy-now-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s ease;
}

.buy-btn:hover::before,
.buy-now-btn:hover::before {
    left: 100%;
}

/* Smooth card entrance animation */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

.product-card:nth-child(1) { animation-delay: 0.1s; }
.product-card:nth-child(2) { animation-delay: 0.2s; }
.product-card:nth-child(3) { animation-delay: 0.3s; }

/* Premium text selection */
::selection {
    background: var(--accent-green);
    color: white;
}

/* Smooth scroll behavior */
html {
    scroll-behavior: smooth;
}