/* ============================================
   CSS-Variablen für Logo-Farben
   ============================================
   Basierend auf dem Logo:
   - Primary (Dunkles Blau): für Hauptelemente, Links, CTAs
   - Secondary (Helles Blau): für Akzente, Hover-States
   - Muted (Grau): für sekundäre Texte
   
   Passen Sie diese Werte an, wenn Sie die exakten Logo-Farben haben:
   ============================================ */

:root {
    /* Logo-Farben - Anpassen nach Bedarf */
    --color-primary: #1e3a5f;        /* Dunkles Blau (Hauptfarbe) */
    --color-secondary: #4a9eff;      /* Helles Blau (Akzentfarbe) */
    --color-accent: #2d5aa0;         /* Mittleres Blau */
    
    /* Basis-Farben */
    --color-background: #ffffff;
    --color-text: #2c3e50;
    --color-text-muted: #6c757d;
    --color-border: #e0e0e0;
    --color-light-bg: #f8f9fa;
    
    /* Typografie */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-size-base: 16px;
    --line-height-base: 1.6;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.1);
    
    /* Transitions */
    --transition: all 0.3s ease;
    
    /* Container */
    --container-max-width: 1200px;
    --container-padding: 1rem;
}

/* ============================================
   Reset & Base Styles
   ============================================ */

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

html {
    scroll-behavior: smooth;
    font-size: var(--font-size-base);
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    color: var(--color-text);
    background-color: var(--color-background);
    overflow-x: hidden;
}

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

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

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
    transition: var(--transition);
}

/* ============================================
   Navigation
   ============================================ */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--color-background);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: var(--transition);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
}

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

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--color-primary);
}

.logo-img {
    height: 40px;
    width: auto;
}

.logo-text {
    display: none;
}

@media (min-width: 768px) {
    .logo-text {
        display: inline;
    }
}

.nav-toggle {
    display: flex;
    flex-direction: column;
    gap: 4px;
    width: 30px;
    height: 30px;
    padding: 0;
    background: transparent;
}

.nav-toggle span {
    width: 100%;
    height: 3px;
    background: var(--color-primary);
    border-radius: 2px;
    transition: var(--transition);
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: rotate(-45deg) translate(8px, -8px);
}

.nav-menu {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background: var(--color-background);
    list-style: none;
    flex-direction: column;
    padding: var(--spacing-md);
    box-shadow: var(--shadow-md);
    transform: translateX(-100%);
    transition: var(--transition);
    max-height: calc(100vh - 60px);
    overflow-y: auto;
}

.nav-menu.active {
    transform: translateX(0);
}

.nav-link {
    display: block;
    padding: var(--spacing-sm);
    color: var(--color-text);
    font-weight: 500;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.nav-link:hover,
.nav-link:focus {
    background: var(--color-light-bg);
    color: var(--color-primary);
    outline: 2px solid var(--color-secondary);
    outline-offset: 2px;
}

@media (min-width: 768px) {
    .nav-toggle {
        display: none;
    }
    
    .nav-menu {
        position: static;
        flex-direction: row;
        transform: none;
        box-shadow: none;
        padding: 0;
        gap: var(--spacing-sm);
        max-height: none;
    }
    
    .nav-link {
        padding: var(--spacing-xs) var(--spacing-sm);
    }
}

/* ============================================
   Hero Section
   ============================================ */

.hero {
    min-height: 100dvh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: var(--spacing-lg) var(--container-padding) var(--spacing-lg);
    background: linear-gradient(135deg, var(--color-light-bg) 0%, var(--color-background) 100%);
    position: relative;
}

.hero-logo {
    margin-bottom: var(--spacing-lg);
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-logo-img {
    max-width: 300px;
    width: 100%;
    height: auto;
    object-fit: contain;
}

@media (min-width: 768px) {
    .hero-logo-img {
        max-width: 400px;
    }
}

@media (min-width: 1024px) {
    .hero-logo-img {
        max-width: 500px;
    }
}

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

.hero-title {
    font-size: clamp(1.75rem, 5vw, 3rem);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
}

.hero-subtitle {
    font-size: clamp(1rem, 2.5vw, 1.25rem);
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.hero-cta {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    align-items: center;
}

@media (min-width: 768px) {
    .hero-cta {
        flex-direction: row;
        justify-content: center;
    }
}

.hero-scroll-indicator {
    position: absolute;
    bottom: var(--spacing-md);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-text-muted);
    font-size: 0.875rem;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    50% {
        transform: translateX(-50%) translateY(10px);
    }
}

/* ============================================
   Buttons
   ============================================ */

.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 1rem;
    text-align: center;
    transition: var(--transition);
    cursor: pointer;
    border: 2px solid transparent;
    min-width: 200px;
}

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

.btn-primary:hover,
.btn-primary:focus {
    background: var(--color-accent);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    outline: 2px solid var(--color-secondary);
    outline-offset: 2px;
}

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

.btn-secondary:hover,
.btn-secondary:focus {
    background: var(--color-primary);
    color: var(--color-background);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    outline: 2px solid var(--color-secondary);
    outline-offset: 2px;
}

/* ============================================
   Sections
   ============================================ */

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

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

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

.section-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    color: var(--color-primary);
    text-align: center;
    margin-bottom: var(--spacing-sm);
}

.section-subtitle {
    font-size: clamp(1rem, 2vw, 1.125rem);
    color: var(--color-text-muted);
    text-align: center;
    margin-bottom: var(--spacing-lg);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* ============================================
   Leistungen Grid
   ============================================ */

.leistungen-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

@media (min-width: 768px) {
    .leistungen-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .leistungen-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.leistung-card {
    background: var(--color-background);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    text-align: center;
}

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

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

.leistung-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.leistung-card p {
    color: var(--color-text-muted);
    line-height: 1.6;
}

/* ============================================
   Vorteile Grid
   ============================================ */

.vorteile-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

@media (min-width: 768px) {
    .vorteile-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .vorteile-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.vorteil-item {
    background: var(--color-background);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: var(--transition);
}

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

.vorteil-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto var(--spacing-md);
    background: var(--color-secondary);
    color: var(--color-background);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
}

.vorteil-item h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.vorteil-item p {
    color: var(--color-text-muted);
    line-height: 1.6;
}

/* ============================================
   Ablauf Steps
   ============================================ */

.ablauf-steps {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
    position: relative;
}

@media (min-width: 768px) {
    .ablauf-steps {
        grid-template-columns: repeat(3, 1fr);
    }
}

.ablauf-step {
    background: var(--color-background);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    text-align: center;
    position: relative;
    transition: var(--transition);
}

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

.step-number {
    width: 60px;
    height: 60px;
    margin: 0 auto var(--spacing-md);
    background: var(--color-primary);
    color: var(--color-background);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
}

.ablauf-step h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.ablauf-step p {
    color: var(--color-text-muted);
    line-height: 1.6;
}

/* ============================================
   Kontakt
   ============================================ */

.kontakt-wrapper {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

@media (min-width: 1024px) {
    .kontakt-wrapper {
        grid-template-columns: 1fr 1.5fr;
    }
}

.kontakt-info {
    background: var(--color-background);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.kontakt-info h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.kontakt-item {
    margin-bottom: var(--spacing-md);
}

.kontakt-label {
    display: block;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.kontakt-link {
    color: var(--color-secondary);
    font-size: 1.125rem;
    display: inline-block;
    margin-bottom: var(--spacing-xs);
}

.kontakt-link:hover,
.kontakt-link:focus {
    color: var(--color-primary);
    text-decoration: underline;
    outline: 2px solid var(--color-secondary);
    outline-offset: 2px;
}

.kontakt-hinweis {
    display: block;
    font-size: 0.875rem;
    color: var(--color-text-muted);
    font-style: italic;
}

.kontakt-form {
    background: var(--color-background);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.kontakt-form h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

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

.form-group label {
    display: block;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.875rem;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-secondary);
    box-shadow: 0 0 0 3px rgba(74, 158, 255, 0.1);
}

.form-group input:invalid:not(:placeholder-shown),
.form-group textarea:invalid:not(:placeholder-shown) {
    border-color: #dc3545;
}

.error-message {
    display: block;
    color: #dc3545;
    font-size: 0.875rem;
    margin-top: var(--spacing-xs);
    min-height: 1.25rem;
}

.form-hinweis {
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-sm);
    background: var(--color-light-bg);
    border-radius: var(--radius-sm);
    border-left: 4px solid var(--color-secondary);
}

.form-hinweis p {
    color: var(--color-text-muted);
    font-size: 0.875rem;
    margin: 0;
}

/* ============================================
   FAQ
   ============================================ */

.faq-list {
    max-width: 800px;
    margin: var(--spacing-lg) auto 0;
}

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

.faq-question {
    width: 100%;
    padding: var(--spacing-md);
    text-align: left;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-primary);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-sm);
    transition: var(--transition);
}

.faq-question:hover,
.faq-question:focus {
    background: var(--color-light-bg);
    outline: 2px solid var(--color-secondary);
    outline-offset: -2px;
}

.faq-icon {
    font-size: 1.5rem;
    font-weight: 300;
    color: var(--color-secondary);
    transition: var(--transition);
    flex-shrink: 0;
}

.faq-question[aria-expanded="true"] .faq-icon {
    transform: rotate(45deg);
}

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

.faq-question[aria-expanded="true"] + .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 0 var(--spacing-md) var(--spacing-md);
    color: var(--color-text-muted);
    line-height: 1.6;
}

/* ============================================
   Footer
   ============================================ */

.footer {
    background: var(--color-primary);
    color: var(--color-background);
    padding: var(--spacing-xl) var(--container-padding) var(--spacing-md);
}

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

@media (min-width: 768px) {
    .footer-content {
        grid-template-columns: repeat(3, 1fr);
    }
}

.footer-section h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

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

.footer-links a:hover,
.footer-links a:focus {
    color: var(--color-background);
    text-decoration: underline;
    outline: 2px solid var(--color-secondary);
    outline-offset: 2px;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    color: rgba(255, 255, 255, 0.8);
}

/* ============================================
   Impressum & Datenschutz Pages
   ============================================ */

.page-logo {
    max-width: 900px;
    margin: 0 auto var(--spacing-lg);
    text-align: left;
}

.page-logo-img {
    max-width: 250px;
    width: 100%;
    height: auto;
    object-fit: contain;
}

@media (min-width: 768px) {
    .page-logo-img {
        max-width: 300px;
    }
}

/* Section title auf Impressum/Datenschutz-Seiten linksbündig und in Linie mit content */
main.section .container > .section-title {
    max-width: 900px;
    margin: 0 auto var(--spacing-sm);
    text-align: left;
}

.impressum-content,
.datenschutz-content {
    max-width: 900px;
    margin: 0 auto;
    background: var(--color-background);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    text-align: left;
}

.impressum-section,
.datenschutz-section {
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
}

.impressum-section:last-child,
.datenschutz-section:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.impressum-section h2,
.datenschutz-section h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.impressum-section h3,
.datenschutz-section h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.impressum-content p,
.datenschutz-content p {
    margin-bottom: var(--spacing-sm);
    line-height: 1.8;
    color: var(--color-text);
}

.impressum-content a,
.datenschutz-content a {
    color: var(--color-secondary);
    text-decoration: underline;
}

.impressum-content a:hover,
.impressum-content a:focus,
.datenschutz-content a:hover,
.datenschutz-content a:focus {
    color: var(--color-primary);
    outline: 2px solid var(--color-secondary);
    outline-offset: 2px;
}

.impressum-content ul,
.datenschutz-content ul {
    margin-left: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    line-height: 1.8;
}

.impressum-content li,
.datenschutz-content li {
    margin-bottom: var(--spacing-xs);
    color: var(--color-text);
}

.impressum-content strong,
.datenschutz-content strong {
    color: var(--color-primary);
    font-weight: 600;
}

/* ============================================
   Utility Classes
   ============================================ */

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}