/* ============================================
   KapitalSchritt - Finanzbildungs-Plattform
   Website Styles
   ============================================ */

/* ============================================
   1. CSS VARIABLEN & RESET
   ============================================ */

:root {
    /* Farbpalette */
    --color-primary: #77bfe3;        /* Himmelblau */
    --color-secondary: #1e3a5f;      /* Dunkelblau */
    --color-white: #ffffff;
    --color-light-gray: #f5f5f5;
    --color-dark-gray: #333333;
    --color-text: #2c3e50;
    --color-button: #34a853;         /* Grün */
    --color-button-hover: #2e8b47;   /* Dunkleres Grün */
    
    /* Typografie */
    --font-primary: 'Poppins', Arial, Helvetica, sans-serif;
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-semibold: 600;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
    
    /* Border Radius */
    --border-radius: 12px;
    --border-radius-sm: 8px;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.15);
    
    /* Transitions */
    --transition: all 0.3s ease;
    
    /* Max Width */
    --max-width: 1200px;
}

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

html {
    scroll-behavior: smooth;
}

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

/* ============================================
   2. TYPOGRAFIE
   ============================================ */

h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-sm);
    color: var(--color-secondary);
}

h1 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
}

h2 {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
}

h3 {
    font-size: 1.5rem;
}

h4 {
    font-size: 1.25rem;
}

p {
    font-weight: var(--font-weight-normal);
    line-height: 1.6;
    max-width: 700px;
    margin-bottom: var(--spacing-sm);
}

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

a:hover {
    color: var(--color-secondary);
}

/* ============================================
   3. HEADER & NAVIGATION
   ============================================ */

.header {
    background-color: var(--color-white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: var(--font-weight-semibold);
    color: var(--color-secondary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-weight: bold;
    font-size: 1.25rem;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
}

.nav-link {
    color: var(--color-text);
    font-weight: var(--font-weight-normal);
    padding: 0.5rem 0;
    position: relative;
}

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

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

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

/* ============================================
   4. HERO SECTION
   ============================================ */

.hero {
    position: relative;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--color-white);
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: -2;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(30, 58, 95, 0.85), rgba(119, 191, 227, 0.75));
    z-index: -1;
}

.hero-content {
    max-width: var(--max-width);
    padding: var(--spacing-md);
    z-index: 1;
}

.hero h1 {
    color: var(--color-white);
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.hero p {
    font-size: 1.25rem;
    max-width: 600px;
    margin: 0 auto var(--spacing-lg);
}

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

/* ============================================
   5. BUTTONS
   ============================================ */

.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    border-radius: var(--border-radius-sm);
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
    transition: var(--transition);
    border: none;
    font-size: 1rem;
    text-align: center;
}

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

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

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

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

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

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

/* ============================================
   6. SECTIONS
   ============================================ */

.section {
    padding: var(--spacing-xl) var(--spacing-md);
}

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

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

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

.container {
    max-width: var(--max-width);
    margin: 0 auto;
}

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

.section-title h2 {
    font-size: 2.5rem;
    color: var(--color-secondary);
}

.section-primary .section-title h2,
.section-primary h2,
.section-primary h3 {
    color: var(--color-white);
}

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

/* ============================================
   7. CARDS & GRID LAYOUTS
   ============================================ */

.cards-grid {
    display: grid;
    gap: var(--spacing-md);
    grid-template-columns: 1fr;
}

.card {
    background-color: var(--color-white);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

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

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

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

.card p {
    max-width: 100%;
}

/* Blog Card */
.blog-card {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.blog-card-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: var(--border-radius) var(--border-radius) 0 0;
    margin: calc(var(--spacing-md) * -1) calc(var(--spacing-md) * -1) var(--spacing-sm);
}

.blog-card-meta {
    font-size: 0.875rem;
    color: #666;
    margin-bottom: var(--spacing-xs);
}

.blog-card-content {
    flex-grow: 1;
}

.blog-card-link {
    display: inline-block;
    margin-top: var(--spacing-sm);
    color: var(--color-primary);
    font-weight: var(--font-weight-semibold);
}

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

.stats-grid {
    display: grid;
    gap: var(--spacing-md);
    grid-template-columns: 1fr;
    text-align: center;
}

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

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

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

.section-primary .stat-number {
    color: var(--color-white);
}

.section-primary .stat-label {
    color: var(--color-white);
}

/* ============================================
   9. CONTENT SECTIONS
   ============================================ */

.content-section {
    display: grid;
    gap: var(--spacing-lg);
    align-items: center;
}

.content-image {
    width: 100%;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
}

.content-text h2 {
    margin-bottom: var(--spacing-md);
}

.content-text p {
    margin-bottom: var(--spacing-md);
    max-width: 100%;
}

.content-text ul {
    list-style: none;
    margin-bottom: var(--spacing-md);
}

.content-text li {
    padding: var(--spacing-xs) 0;
    padding-left: 1.5rem;
    position: relative;
}

.content-text li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-button);
    font-weight: bold;
}

/* ============================================
   10. CALL TO ACTION
   ============================================ */

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

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

.cta-section p {
    font-size: 1.25rem;
    margin: 0 auto var(--spacing-lg);
    max-width: 600px;
}

/* ============================================
   11. FOOTER
   ============================================ */

.footer {
    background-color: var(--color-secondary);
    color: var(--color-white);
    padding: var(--spacing-lg) var(--spacing-md) var(--spacing-md);
}

.footer-content {
    max-width: var(--max-width);
    margin: 0 auto;
    display: grid;
    gap: var(--spacing-lg);
    grid-template-columns: 1fr;
    margin-bottom: var(--spacing-lg);
}

.footer-section h3 {
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
    font-size: 1.25rem;
}

.footer-section p {
    font-size: 0.9rem;
    line-height: 1.6;
}

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

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

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
}

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

.social-links {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
}

.social-link {
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    transition: var(--transition);
}

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

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.875rem;
}

.footer-bottom p {
    max-width: 100%;
}

/* ============================================
   12. CONTACT FORM
   ============================================ */

.contact-wrapper {
    display: grid;
    gap: var(--spacing-lg);
}

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

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

.form-control {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: var(--border-radius-sm);
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(119, 191, 227, 0.1);
}

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

.contact-info {
    background-color: var(--color-light-gray);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
}

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

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

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

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

.map-container iframe {
    width: 100%;
    height: 100%;
    border: none;
}

/* ============================================
   13. FAQ
   ============================================ */

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

.faq-item {
    background-color: var(--color-white);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-sm);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.faq-question {
    width: 100%;
    text-align: left;
    padding: var(--spacing-md);
    background-color: var(--color-white);
    border: none;
    font-family: var(--font-primary);
    font-size: 1.125rem;
    font-weight: var(--font-weight-semibold);
    color: var(--color-secondary);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}

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

.faq-icon {
    font-size: 1.5rem;
    transition: var(--transition);
}

.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(--color-text);
}

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

/* ============================================
   14. COOKIE BANNER
   ============================================ */

.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: var(--color-secondary);
    color: var(--color-white);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-lg);
    z-index: 9999;
    transform: translateY(100%);
    transition: transform 0.3s ease;
}

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

.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 p {
    margin-bottom: 0;
    max-width: 100%;
}

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

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

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

/* ============================================
   15. ARTICLE/BLOG POST
   ============================================ */

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

.article-meta {
    color: #666;
    font-size: 0.9rem;
    margin-bottom: var(--spacing-md);
}

.article-image {
    width: 100%;
    max-height: 500px;
    object-fit: cover;
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-lg);
}

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

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

.article-content p {
    max-width: 100%;
    margin-bottom: var(--spacing-md);
}

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

.article-content li {
    margin-bottom: var(--spacing-xs);
}

.article-cta {
    background-color: var(--color-light-gray);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    text-align: center;
    margin-top: var(--spacing-xl);
}

/* ============================================
   16. RESOURCES PAGE
   ============================================ */

.resource-item {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
    margin-bottom: var(--spacing-lg);
}

.resource-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-size: 1.5rem;
    flex-shrink: 0;
}

.resource-content h3 {
    margin-bottom: var(--spacing-xs);
}

/* ============================================
   17. LEGAL PAGES (Privacy, Terms)
   ============================================ */

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

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

.legal-content h3 {
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.legal-content p {
    max-width: 100%;
    margin-bottom: var(--spacing-md);
}

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

/* ============================================
   18. RESPONSIVE DESIGN
   ============================================ */

/* Tablet (768px and up) */
@media (min-width: 768px) {
    h1 {
        font-size: 3rem;
    }
    
    .cards-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .content-section {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-wrapper {
        grid-template-columns: 2fr 1fr;
    }
}

/* Desktop (992px and up) */
@media (min-width: 992px) {
    .cards-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .stats-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .footer-content {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* Mobile Menu */
@media (max-width: 767px) {
    .mobile-menu-toggle {
        display: block;
    }
    
    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--color-white);
        flex-direction: column;
        padding: var(--spacing-md);
        box-shadow: var(--shadow-md);
        display: none;
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: stretch;
    }
    
    .btn {
        width: 100%;
    }
    
    .section-title h2 {
        font-size: 1.75rem;
    }
    
    .cookie-content {
        flex-direction: column;
        align-items: stretch;
    }
    
    .cookie-buttons {
        flex-direction: column;
    }
}

/* ============================================
   19. UTILITY CLASSES
   ============================================ */

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

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

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

.hidden {
    display: none;
}

/* ============================================
   20. ANIMATIONS
   ============================================ */

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

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