/* CSS Custom Properties */
:root {
    /* Colors using HSL format */
    --primary: 213 94% 68%; /* #3b82f6 */
    --primary-dark: 213 94% 58%; /* #2563eb */
    --secondary: 142 71% 45%; /* #10b981 */
    --accent: 38 92% 50%; /* #f59e0b */
    --danger: 0 84% 60%; /* #ef4444 */
    --purple: 262 83% 58%; /* #8b5cf6 */
    
    --background: 210 11% 98%; /* #f8fafc */
    --surface: 0 0% 100%; /* #ffffff */
    --surface-gray: 210 20% 96%; /* #f1f5f9 */
    
    --text-primary: 222 84% 5%; /* #0f172a */
    --text-secondary: 215 25% 27%; /* #334155 */
    --text-muted: 215 16% 47%; /* #64748b */
    
    --border: 214 32% 91%; /* #e2e8f0 */
    --border-light: 210 40% 94%; /* #f1f5f9 */
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* Typography */
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    
    --line-height-tight: 1.25;
    --line-height-snug: 1.375;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.625;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    --radius-2xl: 1rem;
    
    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;
}

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: var(--line-height-normal);
    color: hsl(var(--text-primary));
    background-color: hsl(var(--background));
    font-size: var(--font-size-base);
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

@media (min-width: 768px) {
    .container {
        padding: 0 var(--spacing-xl);
    }
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: var(--line-height-tight);
    color: hsl(var(--text-primary));
}

h1 {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-lg);
}

h2 {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-md);
}

h3 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-md);
}

h4 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-sm);
}

p {
    margin-bottom: var(--spacing-md);
    color: hsl(var(--text-secondary));
    line-height: var(--line-height-relaxed);
}

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

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

/* Buttons */
.btn-primary, .btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: var(--font-size-base);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-normal);
    text-decoration: none;
    min-height: 44px;
}

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

.btn-primary:hover {
    background-color: hsl(var(--primary-dark));
    border-color: hsl(var(--primary-dark));
    color: white;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background-color: transparent;
    color: hsl(var(--text-primary));
    border-color: hsl(var(--border));
}

.btn-secondary:hover {
    background-color: hsl(var(--surface-gray));
    border-color: hsl(var(--text-muted));
    color: hsl(var(--text-primary));
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

/* Forms */
.form-group {
    margin-bottom: var(--spacing-lg);
}

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

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 2px solid hsl(var(--border));
    border-radius: var(--radius-lg);
    font-size: var(--font-size-base);
    transition: border-color var(--transition-fast);
    background-color: hsl(var(--surface));
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: hsl(var(--primary));
    box-shadow: 0 0 0 3px hsl(var(--primary) / 0.1);
}

.form-checkbox {
    margin-bottom: var(--spacing-md);
}

.form-checkbox label {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-xs);
    font-weight: 400;
    cursor: pointer;
}

.form-checkbox input[type="checkbox"] {
    margin-top: 2px;
    width: auto;
}

/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-header h2 {
    margin-bottom: var(--spacing-md);
}

.section-header p {
    font-size: var(--font-size-lg);
    color: hsl(var(--text-muted));
    max-width: 600px;
    margin: 0 auto;
}

/* Cookie Banner */
.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: hsl(var(--text-primary));
    color: white;
    padding: var(--spacing-lg);
    z-index: 1000;
    transform: translateY(100%);
    transition: transform var(--transition-normal);
}

.cookie-banner.show {
    transform: translateY(0);
}

.cookie-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.cookie-content p {
    margin: 0;
    color: white;
    flex: 1;
    min-width: 300px;
}

.cookie-buttons {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.cookie-buttons .btn-primary,
.cookie-buttons .btn-secondary {
    font-size: var(--font-size-sm);
    padding: var(--spacing-xs) var(--spacing-md);
}

/* Cookie Modal */
.cookie-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1001;
}

.cookie-modal.show {
    display: flex;
}

.cookie-modal-content {
    background-color: hsl(var(--surface));
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    max-width: 500px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
}

.cookie-modal-content h3 {
    margin-bottom: var(--spacing-lg);
}

.cookie-option {
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-md);
    border: 1px solid hsl(var(--border));
    border-radius: var(--radius-lg);
}

.cookie-option label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 600;
    cursor: pointer;
}

.cookie-option p {
    margin-top: var(--spacing-xs);
    margin-bottom: 0;
    font-size: var(--font-size-sm);
    color: hsl(var(--text-muted));
}

.cookie-modal-buttons {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: flex-end;
    margin-top: var(--spacing-xl);
}

/* Header */
.header {
    background-color: hsl(var(--surface));
    box-shadow: var(--shadow-sm);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
}

.navbar {
    padding: var(--spacing-md) 0;
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 700;
    font-size: var(--font-size-xl);
    color: hsl(var(--text-primary));
}

.nav-brand a {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: hsl(var(--text-primary));
}

.nav-menu {
    display: none;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: var(--spacing-xl);
    margin: 0;
    padding: 0;
}

.nav-link {
    font-weight: 500;
    color: hsl(var(--text-secondary));
    padding: var(--spacing-xs) 0;
    position: relative;
}

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

.nav-link:hover::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    right: 0;
    height: 2px;
    background-color: hsl(var(--primary));
}

.nav-toggle {
    display: flex;
    flex-direction: column;
    gap: 4px;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.nav-toggle .bar {
    width: 25px;
    height: 3px;
    background-color: hsl(var(--text-primary));
    transition: all var(--transition-fast);
}

.nav-toggle.active .bar:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

.nav-toggle.active .bar:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active .bar:nth-child(3) {
    transform: rotate(-45deg) translate(8px, -8px);
}

@media (min-width: 768px) {
    .nav-menu {
        display: block;
    }
    
    .nav-toggle {
        display: none;
    }
}

@media (max-width: 767px) {
    .nav-menu.active {
        display: block;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: hsl(var(--surface));
        box-shadow: var(--shadow-md);
        padding: var(--spacing-lg);
    }
    
    .nav-list {
        flex-direction: column;
        gap: var(--spacing-md);
    }
}

/* Hero Section */
.hero {
    padding: calc(80px + var(--spacing-3xl)) 0 var(--spacing-3xl) 0;
    background: linear-gradient(135deg, hsl(var(--background)) 0%, hsl(var(--surface-gray)) 100%);
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

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

.hero h1 {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-lg);
    background: linear-gradient(135deg, hsl(var(--primary)) 0%, hsl(var(--secondary)) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: var(--font-size-lg);
    color: hsl(var(--text-muted));
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

.hero-image {
    display: flex;
    justify-content: center;
}

.hero-image svg {
    max-width: 100%;
    height: auto;
}

@media (min-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr 1fr;
    }
    
    .hero-text {
        text-align: left;
    }
    
    .hero-subtitle {
        margin-left: 0;
        margin-right: 0;
    }
    
    .hero-buttons {
        justify-content: flex-start;
    }
    
    .hero h1 {
        font-size: var(--font-size-5xl);
    }
}

/* About Section */
.about {
    padding: var(--spacing-3xl) 0;
    background-color: hsl(var(--surface));
}

.about-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.about-text h3 {
    color: hsl(var(--primary));
    margin-bottom: var(--spacing-md);
}

.about-features {
    list-style: none;
    margin-top: var(--spacing-lg);
}

.about-features li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    color: hsl(var(--text-secondary));
}

.about-features svg {
    color: hsl(var(--secondary));
    flex-shrink: 0;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-xl);
}

.stat {
    text-align: center;
    padding: var(--spacing-lg);
    background-color: hsl(var(--surface-gray));
    border-radius: var(--radius-xl);
}

.stat-number {
    display: block;
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: hsl(var(--primary));
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    color: hsl(var(--text-muted));
    font-weight: 600;
}

@media (min-width: 1024px) {
    .about-content {
        grid-template-columns: 2fr 1fr;
    }
}

/* Services Section */
.services {
    padding: var(--spacing-3xl) 0;
    background-color: hsl(var(--surface-gray));
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
}

.service-card {
    background-color: hsl(var(--surface));
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.service-icon {
    margin-bottom: var(--spacing-lg);
    display: flex;
    justify-content: center;
}

.service-card h3 {
    color: hsl(var(--text-primary));
    margin-bottom: var(--spacing-md);
}

.service-card p {
    color: hsl(var(--text-muted));
    margin-bottom: 0;
}

/* Products Section */
.products {
    padding: var(--spacing-3xl) 0;
    background-color: hsl(var(--surface));
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
}

.product-card {
    background-color: hsl(var(--surface));
    border: 1px solid hsl(var(--border));
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    transition: all var(--transition-normal);
}

.product-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: hsl(var(--primary));
}

.product-image {
    margin-bottom: var(--spacing-lg);
    display: flex;
    justify-content: center;
    background-color: hsl(var(--surface-gray));
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
}

.product-image svg {
    max-width: 100%;
    height: auto;
}

.product-card h3 {
    margin-bottom: var(--spacing-sm);
    color: hsl(var(--text-primary));
}

.product-card p {
    color: hsl(var(--text-muted));
    margin-bottom: var(--spacing-md);
}

.product-price {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: hsl(var(--primary));
}

/* Reviews Section */
.reviews {
    padding: var(--spacing-3xl) 0;
    background-color: hsl(var(--surface-gray));
}

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

.review-card {
    background-color: hsl(var(--surface));
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
}

.review-stars {
    color: hsl(var(--accent));
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-md);
}

.review-card p {
    font-style: italic;
    margin-bottom: var(--spacing-lg);
    color: hsl(var(--text-secondary));
}

.review-author strong {
    color: hsl(var(--text-primary));
    display: block;
    margin-bottom: var(--spacing-xs);
}

.review-author span {
    color: hsl(var(--text-muted));
    font-size: var(--font-size-sm);
}

/* Newsletter Section */
.newsletter {
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(135deg, hsl(var(--primary)) 0%, hsl(var(--secondary)) 100%);
    color: white;
}

.newsletter-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
    text-align: center;
}

.newsletter-text h2 {
    color: white;
    margin-bottom: var(--spacing-md);
}

.newsletter-text p {
    color: rgba(255, 255, 255, 0.9);
    font-size: var(--font-size-lg);
    margin-bottom: 0;
}

.newsletter-form {
    max-width: 500px;
    margin: 0 auto;
}

.newsletter-form .form-group {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.newsletter-form input {
    flex: 1;
    min-width: 0;
}

.newsletter-form .form-checkbox {
    text-align: left;
}

.newsletter-form .form-checkbox label {
    color: rgba(255, 255, 255, 0.9);
}

.newsletter-form .form-checkbox a {
    color: white;
    text-decoration: underline;
}

@media (min-width: 1024px) {
    .newsletter-content {
        grid-template-columns: 1fr 1fr;
        text-align: left;
    }
    
    .newsletter-form {
        margin: 0;
    }
}

@media (max-width: 767px) {
    .newsletter-form .form-group {
        flex-direction: column;
    }
}

/* Contact Section */
.contact {
    padding: var(--spacing-3xl) 0;
    background-color: hsl(var(--surface));
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-3xl);
}

.contact-info {
    display: grid;
    gap: var(--spacing-xl);
}

.contact-item {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
}

.contact-icon {
    color: hsl(var(--primary));
    flex-shrink: 0;
    padding: var(--spacing-sm);
    background-color: hsl(var(--primary) / 0.1);
    border-radius: var(--radius-lg);
}

.contact-item h4 {
    color: hsl(var(--text-primary));
    margin-bottom: var(--spacing-xs);
}

.contact-item p {
    margin: 0;
    color: hsl(var(--text-muted));
}

.contact-form {
    background-color: hsl(var(--surface-gray));
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
}

@media (min-width: 1024px) {
    .contact-content {
        grid-template-columns: 1fr 1fr;
    }
}

/* Footer */
.footer {
    background-color: hsl(var(--text-primary));
    color: white;
    padding: var(--spacing-3xl) 0 var(--spacing-xl) 0;
}

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

.footer-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 700;
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-md);
}

.footer-section p {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--spacing-lg);
}

.footer-section h4 {
    color: white;
    margin-bottom: var(--spacing-md);
}

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

.footer-section ul li {
    margin-bottom: var(--spacing-xs);
}

.footer-section ul li a {
    color: rgba(255, 255, 255, 0.8);
    transition: color var(--transition-fast);
}

.footer-section ul li a:hover {
    color: white;
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    color: white;
    transition: all var(--transition-fast);
}

.social-links a:hover {
    background-color: hsl(var(--primary));
    transform: translateY(-2px);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-lg);
    text-align: center;
}

.footer-bottom p {
    margin: 0;
    color: rgba(255, 255, 255, 0.6);
    font-size: var(--font-size-sm);
}

/* Utility Classes */
.text-center {
    text-align: center;
}

.text-left {
    text-align: left;
}

.text-right {
    text-align: right;
}

.hidden {
    display: none;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.6s ease-out;
}

/* Responsive Design */
@media (max-width: 480px) {
    .hero h1 {
        font-size: var(--font-size-3xl);
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-buttons .btn-primary,
    .hero-buttons .btn-secondary {
        width: 100%;
        max-width: 300px;
    }
    
    .services-grid,
    .products-grid,
    .reviews-grid {
        grid-template-columns: 1fr;
    }
    
    .about-stats {
        grid-template-columns: 1fr;
    }
}

/* Print Styles */
@media print {
    .header,
    .footer,
    .cookie-banner,
    .cookie-modal,
    .newsletter {
        display: none;
    }
    
    .hero {
        padding-top: var(--spacing-xl);
    }
    
    * {
        color: black !important;
        background: white !important;
    }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    :root {
        --primary: 0 0% 0%;
        --text-primary: 0 0% 0%;
        --text-secondary: 0 0% 20%;
        --border: 0 0% 40%;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    html {
        scroll-behavior: auto;
    }
}
