/* ===== CSS Variables & Root Styles ===== */
:root {
    --primary-color: #ff6b6b;
    --secondary-color: #4ecdc4;
    --accent-color: #ffd93d;
    --dark-bg: #0f172a;
    --light-bg: #f8fafc;
    --card-bg: #1e293b;
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --border-color: #334155;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 20px 40px rgba(0, 0, 0, 0.4);
}

/* ===== Global Styles ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

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

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

/* ===== Navigation Header ===== */
.navbar {
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 1rem 0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.navbar-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 2rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition);
}

.logo:hover {
    transform: scale(1.05);
    color: var(--accent-color);
}

.logo i {
    font-size: 2rem;
    animation: spin 3s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.nav-menu {
    display: flex;
    gap: 2rem;
    list-style: none;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
    position: relative;
    font-weight: 500;
}

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

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

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

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    color: var(--text-secondary);
    font-size: 1.2rem;
    transition: var(--transition);
}

.social-links a:hover {
    color: var(--primary-color);
    transform: translateY(-3px);
}

/* ===== Hero Section ===== */
.hero {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    padding: 100px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 50%, rgba(255, 107, 107, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 80% 80%, rgba(78, 205, 196, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: bold;
}

.hero p {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

/* ===== Buttons ===== */
.btn {
    padding: 12px 30px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), #ff5252);
    color: white;
    box-shadow: 0 5px 15px rgba(255, 107, 107, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(255, 107, 107, 0.4);
}

.btn-secondary {
    background: var(--secondary-color);
    color: white;
    box-shadow: 0 5px 15px rgba(78, 205, 196, 0.3);
}

.btn-secondary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(78, 205, 196, 0.4);
}

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

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

.btn-small {
    padding: 8px 16px;
    font-size: 0.9rem;
}

.btn-icon {
    width: 40px;
    height: 40px;
    padding: 0;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ===== Products Section ===== */
.products-section {
    padding: 80px 0;
    background: var(--dark-bg);
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    font-size: 1.1rem;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

/* ===== Product Card ===== */
.product-card {
    background: var(--card-bg);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    cursor: pointer;
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    animation: slideUp 0.6s ease-out;
}

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

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

.product-image {
    width: 100%;
    height: 250px;
    background: linear-gradient(135deg, rgba(255, 107, 107, 0.1), rgba(78, 205, 196, 0.1));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    overflow: hidden;
    position: relative;
}

.product-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, transparent 30%, rgba(255, 255, 255, 0.1) 50%, transparent 70%);
    animation: shimmer 3s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.product-content {
    padding: 1.5rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.product-title {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    font-weight: bold;
}

.product-price {
    font-size: 1.8rem;
    color: var(--primary-color);
    font-weight: bold;
    margin-bottom: 0.5rem;
}

.product-duration {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.product-description {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    flex-grow: 1;
    line-height: 1.6;
}

.product-footer {
    display: flex;
    gap: 1rem;
    margin-top: auto;
}

.product-footer .btn {
    flex: 1;
}

/* ===== About Section ===== */
.about-section {
    padding: 80px 0;
    background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
}

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

.about-text h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.about-text p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-top: 2rem;
}

.stat {
    text-align: center;
    padding: 1.5rem;
    background: rgba(255, 107, 107, 0.1);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.stat h3 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.stat p {
    color: var(--text-secondary);
    margin: 0;
}

.about-image {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 15rem;
    color: rgba(255, 107, 107, 0.2);
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

/* ===== Contact Section ===== */
.contact-section {
    padding: 60px 0;
    background: var(--card-bg);
    text-align: center;
}

.contact-section h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.contact-section p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

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

/* ===== Footer ===== */
.footer {
    background: #0a0f1a;
    border-top: 1px solid var(--border-color);
    padding: 3rem 0 1rem;
    margin-top: 3rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h4 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.footer-section p {
    color: var(--text-secondary);
    line-height: 1.8;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
}

.footer-section ul li a:hover {
    color: var(--primary-color);
}

.social-icons {
    display: flex;
    gap: 1rem;
}

.social-icons a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 107, 107, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    transition: var(--transition);
}

.social-icons a:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
}

/* ===== Product Detail Page ===== */
.product-detail-section {
    padding: 40px 0;
    min-height: calc(100vh - 200px);
}

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

.product-detail-image {
    width: 100%;
    height: 400px;
    background: linear-gradient(135deg, rgba(255, 107, 107, 0.1), rgba(78, 205, 196, 0.1));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 8rem;
    border: 2px solid var(--border-color);
}

.product-detail-content h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.product-detail-price {
    font-size: 2.5rem;
    color: var(--primary-color);
    font-weight: bold;
    margin-bottom: 1rem;
}

.product-detail-description {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

.product-features {
    margin: 2rem 0;
    padding: 1.5rem;
    background: var(--card-bg);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.product-features h3 {
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.product-features ul {
    list-style: none;
}

.product-features li {
    padding: 0.5rem 0;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.product-features li::before {
    content: '✓';
    color: var(--success-color);
    font-weight: bold;
}

.product-actions {
    display: flex;
    gap: 1rem;
    margin: 2rem 0;
}

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

.share-buttons {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
    flex-wrap: wrap;
}

.share-btn {
    padding: 10px 15px;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    color: white;
}

.share-btn-facebook {
    background: #1877f2;
}

.share-btn-facebook:hover {
    background: #165ec4;
    transform: translateY(-2px);
}

.share-btn-twitter {
    background: #1da1f2;
}

.share-btn-twitter:hover {
    background: #1a91da;
    transform: translateY(-2px);
}

.share-btn-whatsapp {
    background: #25d366;
}

.share-btn-whatsapp:hover {
    background: #1fa85b;
    transform: translateY(-2px);
}

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

.share-btn-copy:hover {
    background: #3db8a6;
    transform: translateY(-2px);
}

/* ===== Related Products ===== */
.related-products {
    margin-top: 4rem;
    padding-top: 3rem;
    border-top: 1px solid var(--border-color);
}

.related-products h3 {
    font-size: 2rem;
    margin-bottom: 2rem;
    color: var(--text-primary);
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

/* ===== Purchase Form ===== */
.purchase-form {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    margin-top: 2rem;
}

.purchase-form h3 {
    margin-bottom: 1.5rem;
    color: var(--primary-color);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    font-weight: 600;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    font-family: inherit;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    background: rgba(255, 107, 107, 0.05);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.form-error {
    color: var(--danger-color);
    font-size: 0.9rem;
    margin-top: 0.5rem;
    display: none;
}

.form-group.error input,
.form-group.error textarea {
    border-color: var(--danger-color);
}

.form-group.error .form-error {
    display: block;
}

.form-success {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid var(--success-color);
    color: var(--success-color);
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    display: none;
}

.form-success.show {
    display: block;
}

/* ===== Modal ===== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    z-index: 2000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 12px;
    max-width: 500px;
    width: 90%;
    border: 1px solid var(--border-color);
    animation: slideDown 0.3s ease-out;
}

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

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

.modal-header h2 {
    color: var(--text-primary);
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    transition: var(--transition);
}

.modal-close:hover {
    color: var(--primary-color);
}

/* ===== Admin Panel ===== */
.admin-container {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: 0;
    min-height: calc(100vh - 100px);
}

.admin-sidebar {
    background: var(--card-bg);
    border-right: 1px solid var(--border-color);
    padding: 2rem 0;
}

.admin-menu {
    list-style: none;
}

.admin-menu li {
    margin: 0;
}

.admin-menu a {
    display: block;
    padding: 1rem 1.5rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
    border-left: 3px solid transparent;
}

.admin-menu a:hover,
.admin-menu a.active {
    background: rgba(255, 107, 107, 0.1);
    color: var(--primary-color);
    border-left-color: var(--primary-color);
}

.admin-content {
    padding: 2rem;
}

.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.admin-header h2 {
    color: var(--text-primary);
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--card-bg);
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.admin-table thead {
    background: rgba(255, 107, 107, 0.1);
}

.admin-table th {
    padding: 1rem;
    text-align: left;
    color: var(--primary-color);
    font-weight: 600;
    border-bottom: 1px solid var(--border-color);
}

.admin-table td {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.admin-table tr:hover {
    background: rgba(255, 107, 107, 0.05);
}

.admin-actions {
    display: flex;
    gap: 0.5rem;
}

.admin-actions .btn {
    padding: 6px 12px;
    font-size: 0.85rem;
}

/* ===== Responsive Design ===== */
@media (max-width: 768px) {
    .navbar-content {
        gap: 1rem;
    }

    .nav-menu {
        gap: 1rem;
        font-size: 0.9rem;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero p {
        font-size: 1.1rem;
    }

    .section-title {
        font-size: 2rem;
    }

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

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

    .about-image {
        font-size: 8rem;
    }

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

    .product-detail-image {
        height: 300px;
        font-size: 5rem;
    }

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

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

    .admin-container {
        grid-template-columns: 1fr;
    }

    .admin-sidebar {
        border-right: none;
        border-bottom: 1px solid var(--border-color);
        padding: 1rem 0;
    }

    .admin-menu a {
        padding: 0.75rem 1rem;
    }

    .contact-buttons {
        flex-direction: column;
    }

    .contact-buttons .btn {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .navbar-content {
        gap: 0.5rem;
    }

    .logo span {
        display: none;
    }

    .nav-menu {
        gap: 0.5rem;
        font-size: 0.8rem;
    }

    .hero {
        padding: 50px 0;
    }

    .hero h1 {
        font-size: 1.5rem;
    }

    .hero p {
        font-size: 1rem;
    }

    .btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }

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

    .share-buttons {
        flex-direction: column;
    }

    .share-btn {
        width: 100%;
        justify-content: center;
    }
}

/* ===== Review System Styles ===== */
.reviews-container {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    margin-top: 2rem;
}

.reviews-list {
    max-height: 300px; /* Podi box ekak wage pennanna */
    overflow: hidden; /* Scroll wenakota eliyata panina ewa hide karanawa */
    position: relative;
}

/* Scroll wena animation eka */
.reviews-list .review-item {
    animation: scrollUp 15s linear infinite; /* 15s kiyanne speed eka, adu karoth speed wadi wei */
}

.review-item {
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
}

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

.review-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: 2px solid var(--primary-color);
}

.review-user strong {
    color: var(--text-primary);
    font-size: 1.1rem;
}

.review-stars {
    color: var(--accent-color);
}

.review-text {
    color: var(--text-secondary);
    font-style: italic;
    line-height: 1.6;
}

/* Keyframes for scrolling animation */
@keyframes scrollUp {
    from {
        transform: translateY(100%);
        opacity: 0.5;
    }
    to {
        transform: translateY(-100%);
        opacity: 1;
    }
    /* Meka wada nokaloth, me keyframes wenuwata, 
       main.js ekenma jQuery wage use karala scroll karanna wenawa,
       eth CSS walin puluwan wenna ona */
}