/* ========================================
   Akademie für Digitale Bildung
   Main Stylesheet
   ======================================== */

/* ========================================
   1. CSS RESET & BASE STYLES
   ======================================== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Цветовая палитра */
    --primary-color: #4CAF50;
    --primary-dark: #388E3C;
    --primary-light: #81C784;
    --secondary-color: #2196F3;
    --text-dark: #212121;
    --text-medium: #424242;
    --text-light: #757575;
    --background-light: #FAFAFA;
    --background-white: #FFFFFF;
    --border-color: #E0E0E0;
    --shadow-light: rgba(0, 0, 0, 0.08);
    --shadow-medium: rgba(0, 0, 0, 0.12);
    
    /* Типографика */
    --font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-light: 300;
    --font-regular: 400;
    --font-semibold: 600;
    
    /* Размеры */
    --max-width: 1200px;
    --border-radius: 12px;
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 32px;
    --spacing-xl: 48px;
    --spacing-xxl: 64px;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-family);
    font-weight: var(--font-regular);
    color: var(--text-dark);
    background-color: var(--background-white);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

ul, ol {
    list-style: none;
}

/* ========================================
   2. TYPOGRAPHY
   ======================================== */

h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-semibold);
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    color: var(--text-dark);
}

h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
}

h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
}

h4 {
    font-size: clamp(1.25rem, 2.5vw, 1.5rem);
}

p {
    margin-bottom: var(--spacing-sm);
    color: var(--text-medium);
    line-height: 1.7;
}

.text-light {
    font-weight: var(--font-light);
}

/* ========================================
   3. LAYOUT COMPONENTS
   ======================================== */

.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section {
    padding: var(--spacing-xxl) 0;
}

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

.section-subtitle {
    text-align: center;
    color: var(--text-light);
    font-size: 1.1rem;
    max-width: 700px;
    margin: 0 auto var(--spacing-lg);
}

/* Grid System */
.grid {
    display: grid;
    gap: var(--spacing-lg);
}

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

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

/* ========================================
   4. HEADER & NAVIGATION
   ======================================== */

.header {
    background-color: var(--background-white);
    box-shadow: 0 2px 10px var(--shadow-light);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: all 0.3s ease;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
    max-width: var(--max-width);
    margin: 0 auto;
}

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

.logo-icon {
    width: 40px;
    height: 40px;
}

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

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: width 0.3s ease;
}

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

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

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-dark);
}

/* ========================================
   5. HERO SECTION
   ======================================== */

.hero {
    position: relative;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(76, 175, 80, 0.9), rgba(33, 150, 243, 0.8)),
                url('https://images.unsplash.com/photo-1522202176988-66273c2fd55f?w=1920') center/cover;
    color: var(--background-white);
    text-align: center;
    padding: var(--spacing-xxl) var(--spacing-md);
}

.hero-content {
    max-width: 800px;
    z-index: 1;
}

.hero h1 {
    color: var(--background-white);
    margin-bottom: var(--spacing-md);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: var(--spacing-xl);
    color: rgba(255, 255, 255, 0.95);
    font-weight: var(--font-light);
}

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

/* ========================================
   6. BUTTONS
   ======================================== */

.btn {
    display: inline-block;
    padding: 14px 32px;
    border-radius: var(--border-radius);
    font-weight: var(--font-semibold);
    text-align: center;
    cursor: pointer;
    border: 2px solid transparent;
    transition: all 0.3s ease;
    font-size: 1rem;
    text-transform: none;
}

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

.btn-primary:hover {
    background-color: var(--primary-dark);
    border-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(76, 175, 80, 0.3);
}

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

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

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

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

/* ========================================
   7. CARDS
   ======================================== */

.card {
    background-color: var(--background-white);
    border-radius: var(--border-radius);
    box-shadow: 0 4px 16px var(--shadow-light);
    padding: var(--spacing-lg);
    transition: all 0.3s ease;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.card:hover {
    box-shadow: 0 8px 24px var(--shadow-medium);
    transform: translateY(-4px);
}

.card-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.card-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-md);
}

.card-title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-dark);
}

.card-description {
    color: var(--text-light);
    margin-bottom: var(--spacing-md);
    flex-grow: 1;
}

.card-footer {
    margin-top: auto;
}

/* ========================================
   8. STATISTICS SECTION
   ======================================== */

.stats {
    background-color: var(--background-light);
    padding: var(--spacing-xxl) 0;
}

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

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

.stat-number {
    font-size: 3rem;
    font-weight: var(--font-semibold);
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    color: var(--text-medium);
    font-size: 1.1rem;
}

/* ========================================
   9. CTA SECTION
   ======================================== */

.cta-section {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--background-white);
    padding: var(--spacing-xxl) 0;
    text-align: center;
}

.cta-section h2 {
    color: var(--background-white);
    margin-bottom: var(--spacing-md);
}

.cta-section p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.2rem;
    margin-bottom: var(--spacing-lg);
}

/* ========================================
   10. FOOTER
   ======================================== */

.footer {
    background-color: #1a1a1a;
    color: #e0e0e0;
    padding: var(--spacing-xxl) 0 var(--spacing-md);
}

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

.footer-section h3 {
    color: var(--background-white);
    margin-bottom: var(--spacing-md);
    font-size: 1.2rem;
}

.footer-section p,
.footer-section a {
    color: #b0b0b0;
    margin-bottom: var(--spacing-xs);
    line-height: 1.8;
}

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

.footer-links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.footer-bottom {
    border-top: 1px solid #333;
    padding-top: var(--spacing-md);
    text-align: center;
    color: #888;
    font-size: 0.9rem;
}

/* Disclaimer Section */
.disclaimer {
    background-color: #ffebee;
    border: 2px solid #c62828;
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    margin: var(--spacing-lg) 0;
}

.disclaimer-title {
    color: #c62828;
    font-weight: var(--font-semibold);
    margin-bottom: var(--spacing-sm);
    font-size: 1.1rem;
}

.disclaimer-text {
    color: var(--text-dark);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* ========================================
   11. FORMS
   ======================================== */

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

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

.form-input,
.form-textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-family: var(--font-family);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(76, 175, 80, 0.1);
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
}

/* ========================================
   12. COOKIE BANNER
   ======================================== */

.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: var(--text-dark);
    color: var(--background-white);
    padding: var(--spacing-md);
    box-shadow: 0 -2px 10px var(--shadow-medium);
    z-index: 9999;
    display: none;
}

.cookie-banner.show {
    display: block;
}

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

.cookie-text {
    flex: 1;
    min-width: 250px;
}

.cookie-text a {
    color: var(--primary-light);
    text-decoration: underline;
}

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

/* ========================================
   13. BLOG STYLES
   ======================================== */

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--spacing-lg);
}

.blog-card {
    background-color: var(--background-white);
    border-radius: var(--border-radius);
    box-shadow: 0 4px 16px var(--shadow-light);
    overflow: hidden;
    transition: all 0.3s ease;
}

.blog-card:hover {
    box-shadow: 0 8px 24px var(--shadow-medium);
    transform: translateY(-4px);
}

.blog-image {
    width: 100%;
    height: 220px;
    object-fit: cover;
}

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

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

.blog-title {
    font-size: 1.4rem;
    margin-bottom: var(--spacing-sm);
}

.blog-title a {
    color: var(--text-dark);
}

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

.blog-excerpt {
    color: var(--text-light);
    margin-bottom: var(--spacing-md);
}

/* ========================================
   14. FAQ ACCORDION
   ======================================== */

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background-color: var(--background-white);
    border-radius: var(--border-radius);
    box-shadow: 0 2px 8px var(--shadow-light);
    margin-bottom: var(--spacing-md);
    overflow: hidden;
}

.faq-question {
    width: 100%;
    padding: var(--spacing-md);
    background-color: var(--background-white);
    border: none;
    text-align: left;
    font-size: 1.1rem;
    font-weight: var(--font-semibold);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s ease;
}

.faq-question:hover {
    background-color: var(--background-light);
}

.faq-icon {
    font-size: 1.5rem;
    color: var(--primary-color);
    transition: transform 0.3s ease;
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-answer-content {
    padding: 0 var(--spacing-md) var(--spacing-md);
    color: var(--text-medium);
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

/* ========================================
   15. TEAM SECTION
   ======================================== */

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

.team-member {
    text-align: center;
    padding: var(--spacing-md);
}

.team-image {
    width: 180px;
    height: 180px;
    border-radius: 50%;
    object-fit: cover;
    margin: 0 auto var(--spacing-md);
    border: 4px solid var(--primary-light);
}

.team-name {
    font-size: 1.3rem;
    margin-bottom: var(--spacing-xs);
}

.team-role {
    color: var(--primary-color);
    font-weight: var(--font-semibold);
    margin-bottom: var(--spacing-sm);
}

.team-bio {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* ========================================
   16. RESPONSIVE DESIGN
   ======================================== */

/* Tablet */
@media (max-width: 992px) {
    .grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .hero {
        min-height: 500px;
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Mobile */
@media (max-width: 768px) {
    :root {
        --spacing-xl: 32px;
        --spacing-xxl: 48px;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background-color: var(--background-white);
        flex-direction: column;
        padding: var(--spacing-lg);
        box-shadow: 0 4px 10px var(--shadow-medium);
        transition: left 0.3s ease;
        align-items: flex-start;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: stretch;
    }
    
    .grid-2,
    .grid-3 {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .cookie-content {
        flex-direction: column;
        text-align: center;
    }
    
    .cookie-buttons {
        width: 100%;
        justify-content: center;
    }
    
    .blog-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .stat-number {
        font-size: 2.5rem;
    }
}

/* ========================================
   17. UTILITY CLASSES
   ======================================== */

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

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

.bg-light {
    background-color: var(--background-light);
}

.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); }

.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); }

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

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

/* ========================================
   18. ANIMATIONS
   ======================================== */

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

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

/* ========================================
   19. CONTACT PAGE SPECIFIC
   ======================================== */

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

.contact-info-item {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background-color: var(--background-light);
    border-radius: var(--border-radius);
}

.contact-icon {
    font-size: 2rem;
    color: var(--primary-color);
    flex-shrink: 0;
}

.contact-details h4 {
    margin-bottom: var(--spacing-xs);
}

.contact-details p {
    color: var(--text-medium);
    margin-bottom: 0;
}

.contact-details a {
    color: var(--primary-color);
    word-break: break-all;
}

.contact-details a:hover {
    text-decoration: underline;
}

.map-container {
    width: 100%;
    height: 400px;
    border-radius: var(--border-radius);
    overflow: hidden;
    margin-top: var(--spacing-xl);
}

.map-container iframe {
    width: 100%;
    height: 100%;
    border: 0;
}

/* ========================================
   20. LEGAL PAGES
   ======================================== */

.legal-content {
    max-width: 900px;
    margin: 0 auto;
    line-height: 1.8;
}

.legal-content h2 {
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
    color: var(--text-dark);
}

.legal-content h3 {
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
    color: var(--text-medium);
}

.legal-content p {
    margin-bottom: var(--spacing-md);
}

.legal-content ul {
    list-style: disc;
    margin-left: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

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