/* === CSS Variables & Theme Setup === */
:root {
    /* Dark Theme (Default) */
    --bg-color: #0f172a;
    --text-color: #f8fafc;
    --text-muted: #cbd5e1;
    --primary-color: #b81d18;
    --primary-hover: #8f1612;
    --secondary-color: rgba(255, 255, 255, 0.1);
    --secondary-hover: rgba(255, 255, 255, 0.2);
    
    /* Glassmorphism Variables */
    --glass-bg: rgba(15, 23, 42, 0.6);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    --card-bg: rgba(30, 41, 59, 0.7);
    
    --nav-height: 100px;
    --transition: all 0.3s ease;
}

[data-theme="light"] {
    --bg-color: #f8fafc;
    --text-color: #0f172a;
    --text-muted: #475569;
    --primary-color: #b81d18;
    --primary-hover: #8f1612;
    --secondary-color: rgba(0, 0, 0, 0.05);
    --secondary-hover: rgba(0, 0, 0, 0.1);
    
    /* Glassmorphism Variables */
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.4);
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.15);
    --card-bg: rgba(255, 255, 255, 0.8);
}

/* === Reset & Base === */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Outfit', sans-serif;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--nav-height);
}

body {
    background-color: transparent;
    color: var(--text-color);
    transition: color 0.4s ease;
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

.text-center { text-align: center; }
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* === Glassmorphism Utilities === */
.glass-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--nav-height);
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--glass-border);
    z-index: 1000;
    display: flex;
    align-items: center;
    transition: var(--transition);
}

.glass-card {
    background: var(--card-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    border-radius: 24px;
    padding: 40px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.glass-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.2);
}

/* === Buttons === */
.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 30px;
    font-weight: 600;
    font-size: 1.1rem;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    text-align: center;
}

.btn-primary {
    background-color: var(--primary-color);
    color: #fff;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: scale(1.05);
}

.btn-secondary {
    background-color: var(--secondary-color);
    color: var(--text-color);
    border: 1px solid var(--glass-border);
}

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

.icon-btn {
    background: none;
    border: none;
    color: var(--text-color);
    font-size: 1.2rem;
    cursor: pointer;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

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

/* === Navigation === */
.nav-container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-link {
    display: flex;
    align-items: center;
    gap: 15px;
}

.nav-logo {
    height: 70px;
    width: auto;
    border-radius: 8px; /* In case the logo has a background */
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: 0.5px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav-links a {
    font-weight: 600;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: width 0.3s ease;
}

.nav-links a:hover::after {
    width: 100%;
}

.mobile-menu-btn {
    display: none;
}

.mobile-menu {
    display: none;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    width: 100%;
    flex-direction: column;
    padding: 20px;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
}

.mobile-menu.active {
    display: flex;
    animation: slideDown 0.3s ease forwards;
}

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

.mobile-link {
    padding: 15px 0;
    font-size: 1.2rem;
    font-weight: 600;
    border-bottom: 1px solid var(--glass-border);
}

.mobile-theme-btn {
    margin-top: 15px;
    width: auto;
    border-radius: 20px;
    padding: 10px 20px;
    background-color: var(--secondary-color);
}

/* === Sections General === */
.section {
    padding: 100px 0;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 20px;
}

.section-subtitle {
    color: var(--text-muted);
    font-size: 1.2rem;
    margin-bottom: 60px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* === Hero Section === */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 20px;
    overflow: hidden;
}

.hero-bg-slideshow {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
    overflow: hidden;
}

.hero-bg-slideshow .slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: 115%; /* Erlaubt Spielraum für die Bewegung */
    background-position: center;
    opacity: 0;
    transition: opacity 2.5s ease-in-out;
}

.hero-bg-slideshow .slide.active {
    opacity: 1;
}

/* Unterschiedliche Kamera-Fahrten für jedes Bild */
@keyframes pan1 { 0% { background-position: 0% 0%; } 100% { background-position: 100% 100%; } }
@keyframes pan2 { 0% { background-position: 100% 0%; } 100% { background-position: 0% 100%; } }
@keyframes pan3 { 0% { background-position: 50% 100%; } 100% { background-position: 50% 0%; } }
@keyframes pan4 { 0% { background-position: 0% 100%; } 100% { background-position: 100% 0%; } }
@keyframes pan5 { 0% { background-position: 100% 50%; } 100% { background-position: 0% 50%; } }

/* Die Animation läuft PERMANENT im Hintergrund, auch wenn das Bild unsichtbar ist. So kann nichts springen! */
.hero-bg-slideshow .slide:nth-child(1) { animation: pan1 35s linear infinite alternate; }
.hero-bg-slideshow .slide:nth-child(2) { animation: pan2 35s linear infinite alternate; }
.hero-bg-slideshow .slide:nth-child(3) { animation: pan3 35s linear infinite alternate; }
.hero-bg-slideshow .slide:nth-child(4) { animation: pan4 35s linear infinite alternate; }
.hero-bg-slideshow .slide:nth-child(5) { animation: pan5 35s linear infinite alternate; }

.hero-bg-slideshow::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--bg-color);
    opacity: 0.6;
    z-index: 1;
    transition: background-color 0.4s ease;
}

.hero-content {
    max-width: 800px;
    width: 100%;
    text-align: center;
    z-index: 1;
    margin-top: var(--nav-height);
}

.hero-glass {
    padding: 60px 40px;
    background: rgba(30, 41, 59, 0.4); /* slightly more transparent for hero */
}

[data-theme="light"] .hero-glass {
    background: rgba(255, 255, 255, 0.6);
}

.badge {
    display: inline-block;
    padding: 8px 16px;
    background: var(--primary-color);
    color: white;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.hero h1 {
    font-size: 4rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 20px;
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-color);
    margin-bottom: 40px;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
}

/* === About Section === */
.about-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
}

.about-text p {
    color: var(--text-muted);
    font-size: 1.1rem;
    margin-bottom: 20px;
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-top: 40px;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px;
    background: var(--secondary-color);
    border-radius: 12px;
}

.feature-item i {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.feature-item span {
    font-weight: 600;
}

/* === Classes Section === */
.classes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.class-card {
    display: flex;
    flex-direction: column;
}

.class-icon {
    width: 60px;
    height: 60px;
    border-radius: 16px;
    background: var(--primary-color);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    margin-bottom: 20px;
    box-shadow: 0 10px 20px rgba(59, 130, 246, 0.3);
}

.class-card h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
}

.class-card p {
    color: var(--text-muted);
    margin-bottom: 20px;
    flex-grow: 1;
}

.class-list li {
    display: flex;
    align-items: center;
    padding: 8px 0;
    border-top: 1px solid var(--glass-border);
}

.class-list li span {
    font-weight: 800;
    color: var(--primary-color);
    width: 50px;
}

/* === Contact Section === */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.info-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    margin-top: 30px;
}

.info-item i {
    font-size: 1.5rem;
    color: var(--primary-color);
    background: var(--secondary-color);
    padding: 15px;
    border-radius: 50%;
}

.info-item strong {
    display: block;
    font-size: 1.1rem;
    margin-bottom: 5px;
}

.info-item p, .info-item a {
    color: var(--text-muted);
}

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

.contact-map {
    padding: 0;
    overflow: hidden;
    min-height: 400px;
}

/* === Footer === */
.footer {
    background: var(--glass-bg);
    border-top: 1px solid var(--glass-border);
    padding: 40px 0;
    margin-top: 60px;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 15px;
    font-weight: 800;
    font-size: 1.2rem;
}

.footer-img {
    height: 30px;
}

.footer-links {
    display: flex;
    gap: 20px;
}

.footer-links a {
    color: var(--text-muted);
    font-weight: 600;
}

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

.copyright {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* === Responsive === */
@media (max-width: 992px) {
    .hero h1 { font-size: 3rem; }
    .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .nav-links { display: none; }
    .mobile-menu-btn { display: block; }
    .hero h1 { font-size: 2.5rem; }
    .hero-buttons { flex-direction: column; }
    .hero-glass { padding: 40px 20px; }
}

/* === Registration Modal === */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.modal-overlay.active {
    display: flex;
    opacity: 1;
}

.modal-content {
    position: relative;
    width: 100%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    padding: 40px;
}

.close-modal {
    position: absolute;
    top: 20px;
    right: 20px;
    background: none;
    border: none;
    color: var(--text-color);
    font-size: 1.5rem;
    cursor: pointer;
    transition: var(--transition);
}

.close-modal:hover {
    color: var(--primary-color);
}

.modal-header h2 {
    margin-bottom: 20px;
    text-align: center;
}

.progress-bar-container {
    width: 100%;
    height: 8px;
    background: var(--secondary-color);
    border-radius: 4px;
    margin-bottom: 10px;
}
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: var(--primary-color);
    width: 33.33%;
    transition: width 0.4s ease;
}

#step-indicator {
    text-align: center;
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 30px;
}

.form-step {
    display: none;
    animation: fadeIn 0.4s ease;
}

.form-step.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    font-size: 0.95rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border-radius: 8px;
    border: 1px solid var(--glass-border);
    background: var(--secondary-color);
    color: var(--text-color);
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

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

.form-group select option,
.form-group select optgroup {
    background-color: var(--bg-color);
    color: var(--text-color);
}

/* Dark mode inputs override if needed */
[data-theme="light"] .form-group input,
[data-theme="light"] .form-group select,
[data-theme="light"] .form-group textarea {
    background: #fff;
    color: #0f172a;
    border: 1px solid #cbd5e1;
}

.form-actions {
    display: flex;
    justify-content: space-between;
    margin-top: 30px;
}

.btn-next, .btn-prev {
    display: flex;
    align-items: center;
    gap: 10px;
}

#submit-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

/* === Info Buttons & Info Modal === */
.info-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--text-color);
    font-size: 0.9rem;
    padding: 6px 12px;
    border-radius: 20px;
    cursor: pointer;
    transition: var(--transition);
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: inherit;
}

[data-theme="light"] .info-btn {
    background: rgba(0, 0, 0, 0.05);
    border: 1px solid rgba(0, 0, 0, 0.1);
}

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

.info-modal-body {
    font-size: 1.1rem;
    line-height: 1.6;
    color: var(--text-color);
    padding: 10px 0;
    max-height: 60vh;
    overflow-y: auto;
}