/* ==============================================
   Akademie Nova - Online-Lernplattform
   Hauptstylsheet mit responsive Design
   ============================================== */

/* Import Poppins Font */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;600;700&display=swap');

/* ==============================================
   CSS Variables & Reset
   ============================================== */
:root {
    --primary-color: #37a169;
    --primary-dark: #2d8454;
    --primary-light: #4db87d;
    --text-dark: #1a1a1a;
    --text-light: #6b6b6b;
    --background: #ffffff;
    --background-light: #f8f9fa;
    --border-color: #e0e0e0;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.12);
    --border-radius: 12px;
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: 16px;
    font-weight: 400;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--background);
    overflow-x: hidden;
}

/* ==============================================
   Typography
   ============================================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.1rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: 1rem;
    max-width: 700px;
}

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

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

ul, ol {
    margin-bottom: 1rem;
    padding-left: 1.5rem;
}

/* ==============================================
   Layout Container
   ============================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ==============================================
   Header & Navigation
   ============================================== */
header {
    background: var(--background);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: var(--transition);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
    max-width: 1200px;
    margin: 0 auto;
    padding-left: 20px;
    padding-right: 20px;
}

.logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
}

.logo:hover {
    color: var(--primary-dark);
}

nav ul {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 2rem;
}

nav a {
    color: var(--text-dark);
    font-weight: 400;
    transition: var(--transition);
    position: relative;
}

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

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

nav a:hover::after {
    width: 100%;
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.menu-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background: var(--text-dark);
    margin: 5px 0;
    transition: var(--transition);
}

/* ==============================================
   Hero Section
   ============================================== */
.hero {
    position: relative;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
    background: linear-gradient(135deg, rgba(55, 161, 105, 0.9), rgba(45, 132, 84, 0.9)),
                url('https://images.unsplash.com/photo-1522202176988-66273c2fd55f?w=1600&q=80') center/cover;
    padding: 4rem 20px;
}

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

.hero h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: white;
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    max-width: 100%;
    font-weight: 300;
}

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

/* ==============================================
   Buttons
   ============================================== */
.btn {
    display: inline-block;
    padding: 14px 32px;
    border-radius: var(--border-radius);
    font-weight: 500;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    font-size: 1rem;
    text-decoration: none;
    box-shadow: var(--shadow);
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    box-shadow: var(--shadow-hover);
    transform: translateY(-2px);
    color: white;
}

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

.btn-secondary:hover {
    background: transparent;
    color: white;
    border-color: white;
}

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

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

/* ==============================================
   Section Styles
   ============================================== */
section {
    padding: 5rem 0;
}

.section-title {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.section-title p {
    font-size: 1.125rem;
    color: var(--text-light);
    max-width: 700px;
    margin: 0 auto;
}

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

/* ==============================================
   Card Grid
   ============================================== */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.card {
    background: var(--background);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--shadow);
    transition: var(--transition);
    height: 100%;
}

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

.card-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
    color: white;
}

.card h3 {
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.card p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

/* ==============================================
   Statistics Section
   ============================================== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    text-align: center;
}

.stat-item {
    padding: 2rem;
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1.125rem;
    color: var(--text-light);
}

/* ==============================================
   Feature Section with Image
   ============================================== */
.feature-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.feature-content h2 {
    margin-bottom: 1.5rem;
}

.feature-content p {
    margin-bottom: 1.5rem;
    color: var(--text-light);
}

.feature-content ul {
    list-style: none;
    padding: 0;
    margin-bottom: 2rem;
}

.feature-content ul li {
    padding: 0.75rem 0;
    padding-left: 2rem;
    position: relative;
    color: var(--text-light);
}

.feature-content ul li:before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: 700;
    font-size: 1.25rem;
}

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

/* ==============================================
   Team Section
   ============================================== */
.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.team-member {
    text-align: center;
    background: var(--background);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

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

.team-photo {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    object-fit: cover;
    margin: 0 auto 1.5rem;
    border: 4px solid var(--primary-color);
}

.team-member h3 {
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.team-role {
    color: var(--primary-color);
    font-weight: 500;
    margin-bottom: 1rem;
}

.team-member p {
    color: var(--text-light);
    font-size: 0.95rem;
    margin: 0 auto;
}

/* ==============================================
   Blog Section
   ============================================== */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.blog-card {
    background: var(--background);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

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

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

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

.blog-meta {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.blog-card h3 {
    margin-bottom: 1rem;
    font-size: 1.25rem;
}

.blog-card h3 a {
    color: var(--text-dark);
}

.blog-card h3 a:hover {
    color: var(--primary-color);
}

.blog-excerpt {
    color: var(--text-light);
    margin-bottom: 1.5rem;
    flex: 1;
}

/* ==============================================
   Blog Article Page
   ============================================== */
.article-header {
    text-align: center;
    padding: 3rem 0;
    background: var(--background-light);
}

.article-header h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.article-meta {
    color: var(--text-light);
    font-size: 1rem;
}

.article-image {
    width: 100%;
    max-width: 1000px;
    height: auto;
    border-radius: var(--border-radius);
    margin: 3rem auto;
    display: block;
    box-shadow: var(--shadow);
}

.article-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem 20px;
}

.article-content h2 {
    margin-top: 2.5rem;
    margin-bottom: 1.5rem;
}

.article-content h3 {
    margin-top: 2rem;
    margin-bottom: 1rem;
}

.article-content p {
    margin-bottom: 1.5rem;
    max-width: 100%;
}

.article-content ul,
.article-content ol {
    margin-bottom: 1.5rem;
}

.article-content li {
    margin-bottom: 0.5rem;
    color: var(--text-light);
}

.article-quote {
    border-left: 4px solid var(--primary-color);
    padding: 1.5rem 2rem;
    margin: 2rem 0;
    background: var(--background-light);
    border-radius: var(--border-radius);
    font-style: italic;
    color: var(--text-light);
}

/* ==============================================
   Contact Form
   ============================================== */
.contact-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.contact-info {
    padding: 2rem 0;
}

.contact-info h2 {
    margin-bottom: 1.5rem;
}

.contact-info p {
    margin-bottom: 2rem;
    color: var(--text-light);
}

.contact-details {
    list-style: none;
    padding: 0;
}

.contact-details li {
    padding: 1rem 0;
    display: flex;
    align-items: center;
    gap: 1rem;
    color: var(--text-light);
    border-bottom: 1px solid var(--border-color);
}

.contact-details li:last-child {
    border-bottom: none;
}

.contact-icon {
    width: 40px;
    height: 40px;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.social-link {
    width: 45px;
    height: 45px;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    transition: var(--transition);
}

.social-link:hover {
    background: var(--primary-dark);
    transform: translateY(-3px);
}

.contact-form-wrapper {
    background: var(--background-light);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-dark);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(55, 161, 105, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 150px;
}

.map-container {
    width: 100%;
    height: 400px;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    margin-top: 3rem;
}

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

/* ==============================================
   FAQ Section
   ============================================== */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--background);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    margin-bottom: 1rem;
    box-shadow: var(--shadow);
    cursor: pointer;
    transition: var(--transition);
}

.faq-item:hover {
    box-shadow: var(--shadow-hover);
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    color: var(--text-dark);
}

.faq-toggle {
    font-size: 1.5rem;
    color: var(--primary-color);
    transition: var(--transition);
}

.faq-item.active .faq-toggle {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    color: var(--text-light);
}

.faq-item.active .faq-answer {
    max-height: 500px;
    margin-top: 1rem;
}

/* ==============================================
   Legal Pages (Privacy, Terms)
   ============================================== */
.legal-content {
    max-width: 900px;
    margin: 0 auto;
    padding: 3rem 20px;
}

.legal-content h1 {
    margin-bottom: 1rem;
}

.legal-content h2 {
    margin-top: 2.5rem;
    margin-bottom: 1rem;
}

.legal-content h3 {
    margin-top: 2rem;
    margin-bottom: 0.75rem;
}

.legal-content p {
    margin-bottom: 1.5rem;
    max-width: 100%;
    color: var(--text-light);
}

.legal-content ul,
.legal-content ol {
    margin-bottom: 1.5rem;
    color: var(--text-light);
}

.legal-content li {
    margin-bottom: 0.5rem;
}

/* ==============================================
   Footer
   ============================================== */
footer {
    background: var(--text-dark);
    color: white;
    padding: 3rem 0 1.5rem;
    margin-top: 4rem;
}

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

.footer-section h3 {
    color: white;
    margin-bottom: 1.5rem;
    font-size: 1.25rem;
}

.footer-section p {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 1rem;
}

.footer-links {
    list-style: none;
    padding: 0;
}

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    transition: var(--transition);
}

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

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
}

/* ==============================================
   Cookie Banner
   ============================================== */
.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--text-dark);
    color: white;
    padding: 1.5rem;
    box-shadow: 0 -4px 12px rgba(0, 0, 0, 0.2);
    z-index: 9999;
    display: none;
}

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

.cookie-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.cookie-text {
    flex: 1;
    min-width: 300px;
}

.cookie-text p {
    margin-bottom: 0;
    color: rgba(255, 255, 255, 0.9);
}

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

.cookie-buttons {
    display: flex;
    gap: 1rem;
}

.cookie-btn {
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    font-weight: 500;
    transition: var(--transition);
}

.cookie-accept {
    background: var(--primary-color);
    color: white;
}

.cookie-accept:hover {
    background: var(--primary-dark);
}

.cookie-decline {
    background: transparent;
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.cookie-decline:hover {
    background: rgba(255, 255, 255, 0.1);
}

/* ==============================================
   CTA Section
   ============================================== */
.cta-section {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    text-align: center;
    padding: 4rem 2rem;
    border-radius: var(--border-radius);
    margin: 4rem 0;
}

.cta-section h2 {
    color: white;
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.cta-section p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* ==============================================
   Responsive Design - Tablet
   ============================================== */
@media (max-width: 968px) {
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .card-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
    
    .feature-section {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .contact-section {
        grid-template-columns: 1fr;
    }
    
    .team-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .blog-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ==============================================
   Responsive Design - Mobile
   ============================================== */
@media (max-width: 640px) {
    h1 { font-size: 1.75rem; }
    h2 { font-size: 1.5rem; }
    h3 { font-size: 1.25rem; }
    
    section {
        padding: 3rem 0;
    }
    
    .hero {
        min-height: 500px;
        padding: 3rem 20px;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero p {
        font-size: 1.1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: stretch;
    }
    
    .btn {
        width: 100%;
        padding: 16px 28px;
        font-size: 1.1rem;
    }
    
    nav ul {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--background);
        box-shadow: var(--shadow);
        padding: 1rem;
        gap: 0;
    }
    
    nav ul.active {
        display: flex;
    }
    
    nav li {
        padding: 1rem 0;
        border-bottom: 1px solid var(--border-color);
    }
    
    nav li:last-child {
        border-bottom: none;
    }
    
    .menu-toggle {
        display: block;
    }
    
    .card-grid {
        grid-template-columns: 1fr;
    }
    
    .blog-grid {
        grid-template-columns: 1fr;
    }
    
    .team-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .stat-number {
        font-size: 2.5rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .cookie-content {
        flex-direction: column;
        align-items: stretch;
    }
    
    .cookie-buttons {
        flex-direction: column;
    }
    
    .section-title h2 {
        font-size: 1.75rem;
    }
    
    .cta-section h2 {
        font-size: 1.75rem;
    }
    
    .cta-section p {
        font-size: 1.1rem;
    }
    
    .article-header h1 {
        font-size: 1.75rem;
    }
}

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

.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }
.mb-3 { margin-bottom: 3rem; }

.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mt-3 { margin-top: 3rem; }

.hidden {
    display: none;
}