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

/* ===== ROOT VARIABLES ===== */
:root {
    /* Colors */
    --primary-color: #2C3E50;
    --secondary-color: #E67E22;
    --accent-color: #3498DB;
    --text-dark: #2C3E50;
    --text-light: #7F8C8D;
    --text-white: #FFFFFF;
    --bg-light: #F8F9FA;
    --bg-white: #FFFFFF;
    --border-light: #E9ECEF;
    --success-color: #27AE60;
    --warning-color: #F39C12;
    --error-color: #E74C3C;
    
    /* Typography */
    --font-primary: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --font-secondary: Georgia, 'Times New Roman', serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 4rem;
    
    /* Border radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 8px rgba(0,0,0,0.15);
    --shadow-lg: 0 8px 16px rgba(0,0,0,0.2);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ===== BASE STYLES ===== */
html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-white);
}

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

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

ul {
    list-style: none;
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: var(--spacing-sm);
}

h1 {
    font-size: clamp(2rem, 4vw, 3.5rem);
    font-weight: 700;
}

h2 {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
}

h3 {
    font-size: clamp(1.5rem, 2.5vw, 2rem);
}

h4 {
    font-size: clamp(1.25rem, 2vw, 1.5rem);
}

p {
    margin-bottom: var(--spacing-sm);
    color: var(--text-light);
}

.lead {
    font-size: 1.2rem;
    font-weight: 400;
    margin-bottom: var(--spacing-lg);
}

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

.container-fluid {
    width: 100%;
    padding: 0 var(--spacing-sm);
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 500;
    text-align: center;
    cursor: pointer;
    transition: var(--transition-normal);
    text-decoration: none;
}

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

.btn-primary:hover {
    background-color: #1A252F;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background-color: var(--secondary-color);
    color: var(--text-white);
}

.btn-secondary:hover {
    background-color: #D35400;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

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

.btn-large {
    padding: 16px 32px;
    font-size: 1.1rem;
}

/* ===== NAVIGATION ===== */
.navbar {
    background-color: var(--bg-white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm);
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--primary-color);
}

.nav-brand .logo {
    width: 40px;
    height: 40px;
}

.nav-menu {
    display: flex;
    gap: var(--spacing-lg);
}

.nav-menu a {
    font-weight: 500;
    color: var(--text-dark);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--primary-color);
    background-color: var(--bg-light);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

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

/* ===== HERO SECTION ===== */
.hero {
    padding: var(--spacing-xxl) 0;
    background: linear-gradient(135deg, var(--bg-light) 0%, var(--bg-white) 100%);
}

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

.hero-text h1 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.hero-text p {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-lg);
}

.hero-image img {
    width: 100%;
    max-width: 500px;
    margin: 0 auto;
}

/* ===== SECTIONS ===== */
section {
    padding: var(--spacing-xxl) 0;
}

.page-header {
    background-color: var(--bg-light);
    text-align: center;
    padding: var(--spacing-xl) 0;
}

.page-header h1 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

/* ===== FEATURES SECTION ===== */
.features {
    background-color: var(--bg-white);
}

.features h2 {
    text-align: center;
    color: var(--primary-color);
    margin-bottom: var(--spacing-xl);
}

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

.feature-card {
    text-align: center;
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
    background-color: var(--bg-white);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.feature-card img {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-md);
}

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

/* ===== STATS SECTION ===== */
.stats {
    background-color: var(--primary-color);
    color: var(--text-white);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
}

.stat-item {
    text-align: center;
    padding: var(--spacing-lg);
}

.stat-item h3 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    color: var(--text-white);
}

.stat-item p {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.9);
}

/* ===== SERVICES ===== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
}

.service-card {
    background-color: var(--bg-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    transition: var(--transition-normal);
}

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

.service-card.featured {
    border: 3px solid var(--secondary-color);
}

.service-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.service-content {
    padding: var(--spacing-lg);
}

.service-content h3 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.service-features {
    margin: var(--spacing-md) 0;
}

.service-features li {
    padding: var(--spacing-xs) 0;
    border-bottom: 1px solid var(--border-light);
}

.service-features li:before {
    content: "✓";
    color: var(--success-color);
    font-weight: bold;
    margin-right: var(--spacing-xs);
}

.service-price {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--secondary-color);
    margin: var(--spacing-md) 0;
}

/* ===== TESTIMONIALS ===== */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
}

.testimonial-card {
    background-color: var(--bg-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
}

.testimonial-card:hover {
    box-shadow: var(--shadow-md);
}

.testimonial-card.featured {
    border-left: 4px solid var(--secondary-color);
}

.testimonial-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.testimonial-header img {
    width: 60px;
    height: 60px;
    border-radius: 50%;
}

.student-info h3 {
    margin-bottom: var(--spacing-xs);
}

.student-info p {
    font-size: 0.9rem;
    margin-bottom: var(--spacing-xs);
}

.rating {
    color: var(--warning-color);
}

.course-taken {
    font-size: 0.9rem;
    color: var(--text-light);
    font-style: italic;
    margin-top: var(--spacing-sm);
}

/* ===== BLOG ===== */
.featured-article {
    background-color: var(--bg-light);
    padding: var(--spacing-xl) 0;
}

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

.featured-image img {
    width: 100%;
    border-radius: var(--radius-lg);
}

.article-category {
    display: inline-block;
    background-color: var(--secondary-color);
    color: var(--text-white);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
}

.article-meta {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    font-size: 0.9rem;
    color: var(--text-light);
}

.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
}

.article-card {
    background-color: var(--bg-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: var(--transition-normal);
}

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

.article-image {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.article-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.article-image .article-category {
    position: absolute;
    top: var(--spacing-sm);
    left: var(--spacing-sm);
}

.article-content {
    padding: var(--spacing-lg);
}

.article-content h3 {
    margin-bottom: var(--spacing-sm);
}

.article-content h3 a {
    color: var(--primary-color);
}

.article-content h3 a:hover {
    color: var(--secondary-color);
}

.read-more {
    color: var(--secondary-color);
    font-weight: 500;
    margin-top: var(--spacing-sm);
    display: inline-block;
}

.read-more:hover {
    color: var(--primary-color);
}

/* ===== BLOG ARTICLES ===== */
.blog-article {
    background-color: var(--bg-white);
}

.article-header {
    background-color: var(--bg-light);
    padding: var(--spacing-xl) 0;
}

.breadcrumbs {
    margin-bottom: var(--spacing-sm);
    font-size: 0.9rem;
}

.breadcrumbs a {
    color: var(--text-light);
}

.breadcrumbs a:hover {
    color: var(--primary-color);
}

.article-lead {
    font-size: 1.3rem;
    color: var(--text-light);
    margin-bottom: var(--spacing-lg);
}

.author-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
}

.author-info img {
    width: 50px;
    height: 50px;
    border-radius: 50%;
}

.author-name {
    font-weight: 600;
    color: var(--primary-color);
}

.author-title {
    font-size: 0.9rem;
    color: var(--text-light);
}

.article-image {
    padding: var(--spacing-lg) 0;
}

.article-content {
    padding: var(--spacing-xl) 0;
}

.content-wrapper {
    max-width: 800px;
    margin: 0 auto;
}

.content-wrapper h2 {
    color: var(--primary-color);
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.content-wrapper h3 {
    color: var(--text-dark);
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.content-wrapper blockquote {
    background-color: var(--bg-light);
    padding: var(--spacing-lg);
    border-left: 4px solid var(--secondary-color);
    margin: var(--spacing-lg) 0;
    font-style: italic;
}

.content-wrapper ul, .content-wrapper ol {
    margin-left: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.content-wrapper li {
    margin-bottom: var(--spacing-xs);
    color: var(--text-light);
}

.intro {
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-lg);
    background-color: var(--bg-light);
    border-radius: var(--radius-md);
}

.conclusion {
    font-size: 1.1rem;
    color: var(--text-dark);
    background-color: var(--bg-light);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    margin-top: var(--spacing-lg);
}

/* ===== CONTACT FORM ===== */
.contact-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-xxl);
}

.contact-form {
    background-color: var(--bg-white);
}

.form-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.form-header img {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-md);
}

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

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--text-dark);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-light);
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.checkbox-group {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    cursor: pointer;
    font-size: 0.9rem;
    line-height: 1.4;
}

.checkbox-label input[type="checkbox"] {
    width: auto;
    margin: 0;
}

.contact-info-section {
    background-color: var(--bg-light);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
}

.contact-card {
    background-color: var(--bg-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
}

.contact-card:last-child {
    margin-bottom: 0;
}

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

.contact-item {
    margin-bottom: var(--spacing-md);
}

.contact-item:last-child {
    margin-bottom: 0;
}

.contact-item strong {
    color: var(--text-dark);
}

/* ===== THANK YOU PAGE ===== */
.thank-you-section {
    padding: var(--spacing-xxl) 0;
    text-align: center;
    background-color: var(--bg-light);
}

.thank-you-content {
    max-width: 800px;
    margin: 0 auto;
}

.thank-you-icon img {
    width: 100px;
    height: 100px;
    margin: 0 auto var(--spacing-lg);
}

.next-steps {
    margin: var(--spacing-xxl) 0;
    text-align: left;
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.step-item {
    background-color: var(--bg-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-sm);
}

.step-number {
    display: inline-block;
    width: 40px;
    height: 40px;
    background-color: var(--secondary-color);
    color: var(--text-white);
    border-radius: 50%;
    line-height: 40px;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.contact-info-box {
    background-color: var(--primary-color);
    color: var(--text-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    margin: var(--spacing-lg) 0;
}

.contact-info-box h3 {
    color: var(--text-white);
}

.action-buttons {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
    margin-top: var(--spacing-lg);
}

/* ===== LEGAL PAGES ===== */
.legal-content {
    padding: var(--spacing-xl) 0;
}

.legal-wrapper {
    max-width: 900px;
    margin: 0 auto;
}

.legal-section {
    margin-bottom: var(--spacing-xl);
}

.legal-section h2 {
    color: var(--primary-color);
    border-bottom: 2px solid var(--border-light);
    padding-bottom: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.legal-section h3 {
    color: var(--text-dark);
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.legal-section ul {
    margin-left: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.legal-section li {
    margin-bottom: var(--spacing-xs);
    color: var(--text-light);
}

/* ===== TABLES ===== */
.cookie-table,
.price-table {
    margin: var(--spacing-lg) 0;
    overflow-x: auto;
}

.cookie-table table,
.price-table table {
    width: 100%;
    border-collapse: collapse;
    background-color: var(--bg-white);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.cookie-table th,
.cookie-table td,
.price-table th,
.price-table td {
    padding: var(--spacing-sm);
    text-align: left;
    border-bottom: 1px solid var(--border-light);
}

.cookie-table th,
.price-table th {
    background-color: var(--primary-color);
    color: var(--text-white);
    font-weight: 600;
}

.cookie-table tr:hover,
.price-table tr:hover {
    background-color: var(--bg-light);
}

/* ===== FOOTER ===== */
.footer {
    background-color: var(--primary-color);
    color: var(--text-white);
    padding: var(--spacing-xxl) 0 var(--spacing-lg);
}

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

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

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

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

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

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

.contact-info p {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-xs);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    padding-top: var(--spacing-lg);
    text-align: center;
}

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

/* ===== COOKIE BANNER ===== */
.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: var(--primary-color);
    color: var(--text-white);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-lg);
    z-index: 10000;
    transform: translateY(100%);
    transition: var(--transition-normal);
}

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

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

.cookie-content p {
    margin: 0;
    color: var(--text-white);
}

.cookie-buttons {
    display: flex;
    gap: var(--spacing-sm);
    flex-shrink: 0;
}

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

/* ===== UTILITY CLASSES ===== */
.text-center {
    text-align: center;
}

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

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

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }
.mb-5 { margin-bottom: var(--spacing-xl); }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }
.mt-5 { margin-top: var(--spacing-xl); }

.d-none { display: none; }
.d-block { display: block; }
.d-flex { display: flex; }
.d-grid { display: grid; }

.align-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }

/* ===== LOADING STATES ===== */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

.spinner {
    border: 4px solid var(--border-light);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 0 auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

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

@keyframes slideIn {
    from { transform: translateX(-100%); }
    to { transform: translateX(0); }
}

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

.slide-in {
    animation: slideIn 0.5s ease-out;
}

/* ===== FOCUS STYLES ===== */
a:focus,
button:focus,
input:focus,
select:focus,
textarea:focus {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

/* ===== PRINT STYLES ===== */
@media print {
    .navbar,
    .cookie-banner,
    .footer {
        display: none;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.4;
    }
    
    h1, h2, h3 {
        page-break-after: avoid;
    }
    
    .container {
        max-width: none;
        padding: 0;
    }
}