/* Reset și variabile CSS */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #000000;
    --secondary-color: #ffffff;
    --accent-color: #000000;
    --text-color: #333333;
    --light-gray: #f8f9fa;
    --border-color: #e5e5e5;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-hover: 0 4px 16px rgba(0, 0, 0, 0.12);
    --border-radius: 4px;
    --transition: all 0.2s ease;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--secondary-color);
}

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

/* Header */
.header {
    background-color: var(--secondary-color);
    box-shadow: var(--shadow);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.nav-logo h2 {
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--primary-color);
}

.nav-menu {
    display: flex;
    gap: 2rem;
}

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

.nav-link:hover {
    color: var(--accent-color);
}

.nav-actions {
    display: flex;
    gap: 1rem;
    align-items: center;
}

/* Buttons */
.btn-primary, .btn-secondary, .btn-outline {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

.btn-primary {
    background-color: var(--primary-color);
    color: var(--secondary-color);
    border: 1px solid var(--primary-color);
}

.btn-primary:hover {
    background-color: #333333;
    border-color: #333333;
}

.btn-secondary {
    background-color: transparent;
    color: var(--text-color);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background-color: var(--light-gray);
}

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

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

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

.btn-full {
    width: 100%;
}

/* Hero Section */
.hero {
    margin-top: 80px;
    padding: 6rem 0;
    background: #ffffff;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

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

.hero-text h1 {
    font-size: 3.5rem;
    font-weight: 300;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    line-height: 1.1;
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: 1.1rem;
    color: #666666;
    margin-bottom: 3rem;
    font-weight: 400;
}

.hero-features {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
}

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

.feature i {
    color: var(--primary-color);
    font-size: 1rem;
    width: 20px;
}

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

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

.product-image {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-hover);
}

/* Product Details */
.product-details {
    padding: 6rem 0;
    background-color: var(--secondary-color);
}

.product-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.product-images {
    position: sticky;
    top: 100px;
}

.main-image {
    margin-bottom: 1rem;
}

.main-image img {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.image-thumbnails {
    display: flex;
    gap: 0.5rem;
}

.thumbnail {
    width: 80px;
    height: 80px;
    border-radius: var(--border-radius);
    cursor: pointer;
    border: 2px solid transparent;
    transition: var(--transition);
}

.thumbnail:hover,
.thumbnail.active {
    border-color: var(--accent-color);
}

.product-info h2 {
    font-size: 2.5rem;
    font-weight: 300;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
    letter-spacing: -0.01em;
}

.price {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.current-price {
    font-size: 2.5rem;
    font-weight: 400;
    color: var(--primary-color);
}

.original-price {
    font-size: 1.25rem;
    color: #999999;
    text-decoration: line-through;
}

.discount {
    background-color: #ff4444;
    color: var(--secondary-color);
    padding: 0.25rem 0.5rem;
    border-radius: 2px;
    font-size: 0.75rem;
    font-weight: 500;
}

.product-description {
    margin-bottom: 2rem;
}

.product-description p {
    font-size: 1rem;
    line-height: 1.6;
    color: #666666;
    font-weight: 400;
}

/* Product Options */
.product-options {
    margin-bottom: 2rem;
}

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

.option-group label {
    display: block;
    font-weight: 500;
    margin-bottom: 0.75rem;
    color: var(--primary-color);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.color-options {
    display: flex;
    gap: 0.5rem;
}

.color-option {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition);
}

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

.option-select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    background-color: var(--secondary-color);
}

.size-options {
    display: flex;
    gap: 0.5rem;
}

.size-option {
    width: 44px;
    height: 44px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background-color: var(--secondary-color);
    cursor: pointer;
    transition: var(--transition);
    font-weight: 500;
    font-size: 0.9rem;
}

.size-option:hover,
.size-option.active {
    border-color: var(--primary-color);
    background-color: var(--primary-color);
    color: var(--secondary-color);
}

.checkbox-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.checkbox {
    width: 20px;
    height: 20px;
}

/* Prescription Form */
.prescription-form {
    margin-top: 1rem;
    padding: 1.5rem;
    background-color: #f8f9fa;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.prescription-inputs {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

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

.input-group {
    display: flex;
    flex-direction: column;
}

.input-group label {
    font-size: 0.8rem;
    font-weight: 500;
    color: #666666;
    margin-bottom: 0.5rem;
    text-transform: none;
    letter-spacing: normal;
}

.prescription-input {
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 0.9rem;
    background-color: var(--secondary-color);
    transition: var(--transition);
}

.prescription-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(0, 0, 0, 0.1);
}

.add-to-cart {
    margin-bottom: 2rem;
}

.product-features {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: #666666;
}

.feature-item i {
    color: var(--accent-color);
}

/* Features Section */
.features {
    padding: 4rem 0;
    background-color: var(--light-gray);
}

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 3rem;
    color: var(--primary-color);
}

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

.feature-card {
    background-color: var(--secondary-color);
    padding: 2rem;
    border-radius: var(--border-radius);
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

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

.feature-icon {
    width: 80px;
    height: 80px;
    background-color: var(--accent-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.feature-icon i {
    font-size: 2rem;
    color: var(--secondary-color);
}

.feature-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.feature-card p {
    color: #666666;
    line-height: 1.6;
}

/* How It Works */
.how-it-works {
    padding: 4rem 0;
    background-color: var(--secondary-color);
}

.how-it-works h2 {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 3rem;
    color: var(--primary-color);
}

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

.step {
    text-align: center;
    padding: 2rem;
}

.step-number {
    width: 60px;
    height: 60px;
    background-color: var(--accent-color);
    color: var(--secondary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto 1.5rem;
}

.step h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.step p {
    color: #666666;
    line-height: 1.6;
}

/* Reviews */
.reviews {
    padding: 4rem 0;
    background-color: var(--light-gray);
}

.reviews h2 {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 3rem;
    color: var(--primary-color);
}

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

.review-card {
    background-color: var(--secondary-color);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.stars {
    color: #ffc107;
    margin-bottom: 1rem;
}

.review-card p {
    font-style: italic;
    margin-bottom: 1.5rem;
    line-height: 1.6;
    color: #666666;
}

.reviewer strong {
    color: var(--primary-color);
    display: block;
    margin-bottom: 0.25rem;
}

.reviewer span {
    color: #999999;
    font-size: 0.9rem;
}

/* CTA Section */
.cta {
    padding: 4rem 0;
    background: linear-gradient(135deg, var(--primary-color) 0%, #333333 100%);
    color: var(--secondary-color);
    text-align: center;
}

.cta-content h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.cta-content p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

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

.cta .btn-primary:hover {
    background-color: #f8f9fa;
}

/* Footer */
.footer {
    background-color: var(--primary-color);
    color: var(--secondary-color);
    padding: 3rem 0 1rem;
}

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

.footer-section h3,
.footer-section h4 {
    margin-bottom: 1rem;
    color: var(--secondary-color);
}

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

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

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

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

.footer-bottom {
    border-top: 1px solid #333333;
    padding-top: 1rem;
    text-align: center;
    color: #cccccc;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        gap: 1rem;
        padding: 1rem;
    }

    .nav-menu {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }

    .hero-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }

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

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

    .product-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .product-images {
        position: static;
    }

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

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

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

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

    .hero-text h1 {
        font-size: 1.75rem;
    }

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

    .btn-large {
        padding: 0.875rem 1.5rem;
        font-size: 1rem;
    }

    .current-price {
        font-size: 1.5rem;
    }

    .features h2,
    .how-it-works h2,
    .reviews h2,
    .cta-content h2 {
        font-size: 2rem;
    }
}

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

.feature-card,
.review-card,
.step {
    animation: fadeInUp 0.6s ease-out;
}

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

/* Loading states */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

/* Success states */
.success {
    background-color: #28a745 !important;
    color: white !important;
}

/* Error states */
.error {
    border-color: #dc3545 !important;
    box-shadow: 0 0 0 0.2rem rgba(220, 53, 69, 0.25);
}