/* ============================================
   STIMME DES VERTRAUENS - Dark Premium Design
   ============================================ */

:root {
    /* Colors */
    --bg-primary: #0a0a0b;
    --bg-secondary: #111113;
    --bg-tertiary: #18181b;
    --bg-card: #1c1c1f;

    --text-primary: #fafafa;
    --text-secondary: #a1a1aa;
    --text-muted: #71717a;

    --accent: #3b82f6;
    --accent-hover: #2563eb;
    --accent-glow: rgba(59, 130, 246, 0.15);

    --border: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(255, 255, 255, 0.15);

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2.5rem;
    --space-xl: 4rem;
    --space-2xl: 6rem;

    /* Sizes */
    --max-width: 1200px;
    --border-radius: 12px;
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    font-size: 18px;
    line-height: 1.7;
    color: var(--text-primary);
    background-color: var(--bg-primary);
}

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

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

/* Container */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-md);
}

/* Typography */
h1, h2, h3 {
    font-weight: 600;
    line-height: 1.2;
    color: var(--text-primary);
}

h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    letter-spacing: -0.02em;
}

h2 {
    font-size: clamp(1.5rem, 3vw, 2.25rem);
    letter-spacing: -0.01em;
}

h3 {
    font-size: 1.25rem;
}

p {
    color: var(--text-secondary);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    font-family: var(--font-sans);
    font-size: 1rem;
    font-weight: 500;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
}

.btn-primary {
    background: var(--accent);
    color: white;
    box-shadow: 0 0 20px var(--accent-glow);
}

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 30px var(--accent-glow);
}

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

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

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.btn-outline:hover {
    background: var(--bg-card);
    border-color: var(--border-hover);
}

.btn-large {
    padding: var(--space-sm) var(--space-lg);
    font-size: 1.125rem;
}

.btn-xlarge {
    padding: var(--space-md) var(--space-xl);
    font-size: 1.25rem;
}

/* Sticky CTA */
.sticky-cta {
    position: fixed;
    top: var(--space-md);
    right: var(--space-md);
    z-index: 100;
    opacity: 0;
    transform: translateY(-20px);
    pointer-events: none;
    transition: all 0.3s ease;
}

.sticky-cta.visible {
    opacity: 1;
    transform: translateY(0);
    pointer-events: all;
}

.btn-sticky {
    padding: var(--space-xs) var(--space-sm);
    font-size: 0.9rem;
    backdrop-filter: blur(10px);
    background: rgba(59, 130, 246, 0.9);
}

@media (max-width: 768px) {
    .sticky-cta {
        top: auto;
        bottom: var(--space-md);
        right: var(--space-md);
        left: var(--space-md);
    }

    .btn-sticky {
        width: 100%;
    }
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: var(--space-xl) 0;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(59, 130, 246, 0.08) 0%, transparent 50%),
        var(--bg-primary);
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    align-items: center;
}

.hero-content h1 {
    margin-bottom: var(--space-md);
}

.hero-sub {
    font-size: 1.25rem;
    margin-bottom: var(--space-lg);
}

.hero-cta {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.microcopy {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.hero-image {
    display: flex;
    justify-content: center;
}

.hero-image img {
    max-width: 400px;
    border-radius: var(--border-radius);
    filter: grayscale(10%);
}

@media (max-width: 900px) {
    .hero-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-image {
        order: -1;
    }

    .hero-image img {
        max-width: 280px;
    }

    .hero-cta {
        align-items: center;
    }
}

/* Use Cases Section */
.use-cases {
    padding: var(--space-2xl) 0;
    background: var(--bg-secondary);
}

.use-case {
    position: relative;
    padding: var(--space-xl);
    margin-bottom: var(--space-lg);
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--border-radius);
    transition: border-color 0.3s ease;
}

.use-case:hover {
    border-color: var(--border-hover);
}

.use-case:last-child {
    margin-bottom: 0;
}

.use-case-label {
    position: absolute;
    top: var(--space-sm);
    right: var(--space-sm);
    padding: var(--space-xs) var(--space-sm);
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    background: var(--bg-tertiary);
    border-radius: 6px;
}

.use-case-content h2 {
    margin-bottom: var(--space-sm);
    padding-right: 200px;
}

.use-case-content p {
    margin-bottom: var(--space-md);
    max-width: 700px;
}

@media (max-width: 768px) {
    .use-case {
        padding: var(--space-lg) var(--space-md);
    }

    .use-case-label {
        position: static;
        display: inline-block;
        margin-bottom: var(--space-sm);
    }

    .use-case-content h2 {
        padding-right: 0;
    }
}

/* Showreel Section */
.showreel {
    padding: var(--space-2xl) 0;
    text-align: center;
    background:
        radial-gradient(ellipse at 80% 50%, rgba(59, 130, 246, 0.08) 0%, transparent 50%),
        var(--bg-primary);
}

.showreel h2 {
    margin-bottom: var(--space-sm);
}

.showreel-text {
    max-width: 600px;
    margin: 0 auto var(--space-lg);
}

.showreel-cta {
    margin-top: var(--space-lg);
}

/* Why Voice Section */
.why-voice {
    padding: var(--space-2xl) 0;
    background: var(--bg-secondary);
}

.why-voice h2 {
    margin-bottom: var(--space-lg);
    text-align: center;
}

.benefits-list {
    list-style: none;
    max-width: 700px;
    margin: 0 auto;
}

.benefits-list li {
    position: relative;
    padding: var(--space-sm) 0 var(--space-sm) var(--space-lg);
    font-size: 1.125rem;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border);
}

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

.benefits-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent);
    font-weight: 600;
}

/* FAQ Section */
.faq {
    padding: var(--space-2xl) 0;
    background: var(--bg-primary);
}

.faq h2 {
    margin-bottom: var(--space-xl);
    text-align: center;
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    padding: var(--space-lg);
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--border-radius);
}

.faq-item h3 {
    margin-bottom: var(--space-sm);
    color: var(--text-primary);
}

.faq-item p {
    font-size: 1rem;
}

@media (max-width: 768px) {
    .faq-grid {
        grid-template-columns: 1fr;
    }
}

/* Final CTA Section */
.final-cta {
    padding: var(--space-2xl) 0;
    text-align: center;
    background:
        radial-gradient(ellipse at center, rgba(59, 130, 246, 0.1) 0%, transparent 60%),
        var(--bg-secondary);
}

.final-cta h2 {
    margin-bottom: var(--space-lg);
}

.disclosure {
    margin-top: var(--space-lg);
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* Footer */
.footer {
    padding: var(--space-lg) 0;
    background: var(--bg-primary);
    border-top: 1px solid var(--border);
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: var(--space-lg);
    margin-bottom: var(--space-sm);
}

.footer-links a {
    font-size: 0.875rem;
    color: var(--text-muted);
    transition: color 0.2s ease;
}

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

.footer-copy {
    text-align: center;
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Modal */
.modal {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.9);
}

.modal-content {
    position: relative;
    width: 90%;
    max-width: 900px;
    transform: scale(0.9);
    transition: transform 0.3s ease;
}

.modal.active .modal-content {
    transform: scale(1);
}

.modal-close {
    position: absolute;
    top: -40px;
    right: 0;
    width: 36px;
    height: 36px;
    background: transparent;
    border: none;
    color: white;
    font-size: 2rem;
    cursor: pointer;
    opacity: 0.7;
    transition: opacity 0.2s ease;
}

.modal-close:hover {
    opacity: 1;
}

.video-container {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
    background: var(--bg-card);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-content,
.hero-image,
.use-case,
.faq-item {
    animation: fadeIn 0.6s ease forwards;
}

.use-case:nth-child(2) { animation-delay: 0.1s; }
.use-case:nth-child(3) { animation-delay: 0.2s; }
.use-case:nth-child(4) { animation-delay: 0.3s; }
.use-case:nth-child(5) { animation-delay: 0.4s; }

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