/* CSS Variables */
:root {
    --primary-blue: #0B192C; /* Dunkelblau */
    --accent-gold: #FACC15; /* Gold/Gelb */
    --accent-hover: #EAB308;
    --bg-white: #FFFFFF; /* Weiß */
    --bg-light: #F8FAFC; /* Sehr leichtes Grau für Hintergründe */
    --card-bg: #F1F5F9; /* Leichte graue Flächen für Karten */
    --text-main: #1E293B;
    --text-muted: #64748B;
    
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    --border-radius: 16px;
    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

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

h1, h2, h3, h4 {
    font-family: var(--font-heading);
    color: var(--primary-blue);
    line-height: 1.2;
}

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

/* Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 80px 0;
}

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

.bg-dark {
    background-color: var(--primary-blue);
}

.text-white {
    color: var(--bg-white) !important;
}

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

.max-w-800 {
    max-width: 800px;
}

.mx-auto {
    margin-left: auto;
    margin-right: auto;
}

.mt-4 {
    margin-top: 1.5rem;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 24px;
}

.section-text {
    font-size: 1.1rem;
    color: var(--text-muted);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 14px 28px;
    border-radius: 50px;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1rem;
    text-align: center;
    cursor: pointer;
    border: none;
    transition: var(--transition);
}

.btn-primary {
    background-color: var(--accent-gold);
    color: var(--primary-blue);
}

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

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

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

.btn-card {
    background-color: var(--primary-blue);
    color: var(--bg-white);
    width: 100%;
    margin-top: 16px;
}

.btn-card:hover {
    background-color: var(--accent-gold);
    color: var(--primary-blue);
}

/* Header & Nav */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(8px);
    z-index: 100;
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.5rem;
    color: var(--primary-blue);
}

.nav {
    display: flex;
    gap: 24px;
}

.nav a {
    font-weight: 500;
    font-size: 0.95rem;
}

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

/* Hero Section */
.hero {
    background-color: var(--primary-blue);
    min-height: 90vh;
    display: flex;
    align-items: center;
    text-align: center;
    padding-top: 80px; /* Offset for fixed header */
}

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

.hero h1 {
    color: var(--bg-white);
    font-size: 4rem;
    margin-bottom: 24px;
}

.hero .subtitle {
    color: rgba(255, 255, 255, 0.8);
    font-size: 1.25rem;
    margin-bottom: 40px;
}

.button-group {
    display: flex;
    gap: 16px;
    justify-content: center;
}

/* Grid System */
.grid {
    display: grid;
    gap: 24px;
}

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

/* Cards */
.card {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 24px;
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    transition: var(--transition);
}

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

.chapter-badge {
    background-color: var(--primary-blue);
    color: var(--accent-gold);
    display: inline-block;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 16px;
    align-self: flex-start;
}

.card h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
}

.card p {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 24px;
    flex-grow: 1;
}

.video-placeholder {
    background-color: #E2E8F0;
    border-radius: 8px;
    padding: 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 16px;
}

.video-placeholder .icon {
    background: var(--bg-white);
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: var(--primary-blue);
}

/* Rechner Bereich */
.calc-grid {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    margin-top: 40px;
}

.calc-card {
    background-color: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--border-radius);
    padding: 32px;
}

.calc-card h3 {
    color: var(--accent-gold);
    margin-bottom: 16px;
}

.calc-placeholder {
    background-color: rgba(0, 0, 0, 0.2);
    border-radius: 8px;
    padding: 40px 20px;
    text-align: center;
    color: rgba(255, 255, 255, 0.7);
    border: 2px dashed rgba(255, 255, 255, 0.3);
}

/* Form Styles for Calculators */
.calc-form {
    margin-top: 16px;
}

.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.9);
}

.form-group input {
    width: 100%;
    padding: 12px;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--bg-white);
    font-family: var(--font-body);
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input::placeholder {
    color: rgba(255, 255, 255, 0.4);
}

.form-group input:focus {
    outline: none;
    border-color: var(--accent-gold);
    background-color: rgba(255, 255, 255, 0.15);
}

.calc-result {
    margin-top: 24px;
    padding: 16px;
    border-radius: 8px;
    background-color: rgba(0, 0, 0, 0.2);
    border-left: 4px solid var(--accent-gold);
    display: none;
    font-size: 0.95rem;
}

.calc-result.show {
    display: block;
}

.result-success {
    border-left-color: #22C55E;
}

.result-error {
    border-left-color: #EF4444;
}

/* Elternbereich */
.eltern-box {
    background-color: var(--bg-white);
    border-radius: var(--border-radius);
    padding: 48px;
    box-shadow: var(--shadow-md);
    border-left: 8px solid var(--primary-blue);
}

.benefits-list {
    list-style: none;
    margin-top: 24px;
}

.benefits-list li {
    padding: 12px 0;
    padding-left: 32px;
    position: relative;
    font-size: 1.1rem;
    border-bottom: 1px solid var(--bg-light);
}

.benefits-list li:last-child {
    border-bottom: none;
}

.benefits-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--accent-gold);
    font-weight: bold;
    font-size: 1.2rem;
}

/* Split Grid (Download & Zertifikat) */
.split-grid {
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
}

.info-card {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 40px;
    text-align: center;
}

.info-card p {
    color: var(--text-muted);
    margin-top: 16px;
}

.praxis-card {
    border: 2px solid var(--accent-gold);
    background-color: var(--bg-white);
}

.cert-icon {
    font-size: 4rem;
    margin-top: 24px;
}

/* Footer */
.footer {
    background-color: var(--primary-blue);
    color: var(--bg-white);
    padding: 60px 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.footer h3 {
    color: var(--accent-gold);
    margin-bottom: 20px;
}

.footer p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 8px;
}

.footer a:hover {
    color: var(--accent-gold);
}

/* Responsive */
@media (max-width: 768px) {
    .nav {
        display: none; /* In a real app, a hamburger menu would be here */
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .button-group {
        flex-direction: column;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .eltern-box {
        padding: 32px 24px;
    }
}

/* Lektionen Styles (lessons.html) */
.lesson-header {
    margin-bottom: 32px;
}

.lesson-goal-box {
    background-color: rgba(250, 204, 21, 0.15); /* Light Gold */
    border-left: 4px solid var(--accent-gold);
    padding: 16px;
    border-radius: 0 8px 8px 0;
    font-size: 1.05rem;
}

.lesson-video {
    justify-content: center;
    flex-direction: column;
    padding: 40px;
    background-image: linear-gradient(to right, #E2E8F0, #CBD5E1);
    color: var(--primary-blue);
    margin-bottom: 32px;
}

.lesson-section-title {
    font-size: 1.5rem;
    margin-top: 0;
    margin-bottom: 16px;
    border-bottom: 2px solid var(--bg-light);
    padding-bottom: 8px;
}

.lesson-text {
    font-size: 1.1rem;
    color: var(--text-main);
    margin-bottom: 24px;
}

.lesson-text.lead {
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--primary-blue);
}

.example-box {
    background-color: var(--bg-light);
    padding: 16px 20px;
    border-radius: 8px;
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
    align-items: flex-start;
}

.example-box .icon {
    font-size: 1.5rem;
}

.takeaway-box {
    background-color: var(--primary-blue);
    color: var(--bg-white);
    padding: 24px;
    border-radius: 8px;
    text-align: center;
    margin-top: 32px;
}

.takeaway-box h4 {
    color: var(--accent-gold);
    margin-bottom: 12px;
}

.tasks-list {
    list-style: none;
}

.tasks-list li {
    padding: 12px 0;
    padding-left: 32px;
    position: relative;
    font-size: 1.1rem;
    border-bottom: 1px solid var(--bg-light);
}

.tasks-list li:last-child {
    border-bottom: none;
}

.tasks-list li::before {
    content: "✍️";
    position: absolute;
    left: 0;
}

/* Quiz Styles */
.quiz-question-box {
    background-color: rgba(255, 255, 255, 0.05);
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 24px;
}

.quiz-question-box h4 {
    color: var(--bg-white);
    margin-bottom: 16px;
}

.quiz-options {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.btn-quiz-option {
    background-color: var(--bg-white);
    color: var(--text-main);
    border: 2px solid transparent;
    padding: 12px 20px;
    border-radius: 8px;
    font-family: var(--font-body);
    font-size: 1rem;
    text-align: left;
    cursor: pointer;
    transition: var(--transition);
}

.btn-quiz-option:hover:not(:disabled) {
    background-color: var(--card-bg);
    border-color: var(--accent-gold);
}

.btn-quiz-option:disabled {
    cursor: not-allowed;
    opacity: 0.7;
}

.btn-quiz-option.correct {
    background-color: #22C55E !important;
    color: var(--bg-white) !important;
    border-color: #16A34A !important;
    opacity: 1 !important;
}

.btn-quiz-option.wrong {
    background-color: #EF4444 !important;
    color: var(--bg-white) !important;
    border-color: #DC2626 !important;
    opacity: 0.5 !important;
}

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

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

/* --- Sales Page Elements --- */

/* Hero Video */
.hero-video-container {
    max-width: 450px; /* Deutlich kleiner gemacht */
    margin: 2rem auto;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    overflow: hidden;
    position: relative;
    background: #000;
}

.hero-video {
    width: 100%;
    max-height: 70vh; /* Verhindert, dass das Video höher als der Bildschirm wird */
    object-fit: contain;
    display: block;
    border-radius: 16px;
}

.video-fallback {
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    background: linear-gradient(135deg, #1E293B, #0F172A);
    color: var(--bg-white);
}

.fallback-icon {
    font-size: 4rem;
    color: var(--accent-gold);
    margin-bottom: 1rem;
}

.fallback-badge {
    background: rgba(255, 255, 255, 0.1);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    margin-top: 1rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* Locked Cards */
.locked-card {
    opacity: 0.8;
    position: relative;
}

.lock-icon {
    margin-right: 4px;
}

.locked-note {
    background-color: #E2E8F0;
    color: var(--text-muted);
    text-align: center;
    padding: 12px;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    margin-top: 16px;
}

/* Purchase Section */
.purchase-section {
    background-color: var(--primary-blue);
    background-image: linear-gradient(135deg, #0B192C, #1E293B);
}

.pricing-card {
    background-color: var(--bg-white);
    border-radius: 24px;
    max-width: 500px;
    margin: 40px auto 0;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}

.pricing-header {
    background-color: var(--card-bg);
    padding: 32px 24px;
    border-bottom: 1px solid #E2E8F0;
}

.pricing-header h3 {
    color: var(--text-muted);
    font-size: 1.1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 16px;
}

.price {
    font-size: 4rem;
    font-weight: 800;
    color: var(--primary-blue);
    margin-bottom: 8px;
}

.pricing-body {
    padding: 32px 24px;
}

.features-list {
    list-style: none;
    margin: 24px 0 32px;
}

.features-list li {
    padding: 10px 0;
    border-bottom: 1px solid var(--bg-light);
    color: var(--text-main);
}

.features-list li:last-child {
    border-bottom: none;
}

.btn-purchase {
    display: block;
    width: 100%;
    background-color: #22C55E; /* Modernes Grün */
    color: var(--bg-white);
    font-size: 1.2rem;
    padding: 16px;
    border-radius: 12px;
    margin-bottom: 16px;
    box-shadow: 0 4px 15px rgba(34, 197, 94, 0.4);
}

.btn-purchase:hover {
    background-color: #16A34A;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(34, 197, 94, 0.5);
    color: var(--bg-white);
}

.purchase-note {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* Utility / Navigation updates */
.nav-buy-link {
    background-color: var(--accent-gold);
    color: var(--primary-blue) !important;
    padding: 6px 16px;
    border-radius: 20px;
}

.nav-buy-link:hover {
    background-color: var(--accent-hover);
}

.buy-btn {
    background-color: #22C55E !important;
    border-color: #22C55E !important;
    color: white !important;
}

.buy-btn:hover {
    background-color: #16A34A !important;
    border-color: #16A34A !important;
}

.justify-center {
    justify-content: center;
}

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

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

.footer-links li {
    margin-bottom: 8px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
    text-decoration: underline;
}

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