/* ==========================================================================
   CSS Variables & Theming (Apple Style Dark Mode)
   ========================================================================== */
   :root {
    /* Color Palette - Premium Dark Blue */
    --bg-base: #0b1120; /* Edles Dunkelblau als Grundton */
    --bg-surface: #111827; /* Etwas helleres Dunkelblau für Sektionen */
    --bg-surface-elevated: #1f2937; /* Sichtbar hellere Karten */
    --bg-glass: rgba(17, 24, 39, 0.7);
    --bg-glass-nav: rgba(11, 17, 32, 0.85);
    
    --text-primary: #f5f5f7;
    --text-secondary: #86868b;
    --text-accent: #2997ff;

    /* Typographic Scale */
    --font-sys: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    
    --text-display: 700 3.5rem/1.1 var(--font-sys);
    --text-h1: 600 2.5rem/1.2 var(--font-sys);
    --text-h2: 600 2rem/1.2 var(--font-sys);
    --text-h3: 600 1.5rem/1.3 var(--font-sys);
    --text-body: 400 1.1rem/1.5 var(--font-sys);

    /* Spacing & Layout */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 4rem;
    --space-xl: 6rem;
    
    --radius-sm: 8px;
    --radius-md: 18px;
    --radius-lg: 32px;
    
    --max-width: 1200px;
    --nav-height: 52px;
}

@media (min-width: 768px) {
    :root {
        --text-display: 700 5rem/1.05 var(--font-sys);
        --text-h1: 600 3.5rem/1.1 var(--font-sys);
    }
}

/* ==========================================================================
   Reset & Base Styles
   ========================================================================== */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    background-color: var(--bg-base);
    color: var(--text-primary);
    font: var(--text-body);
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Scrollbar Styling */
::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--bg-base); }
::-webkit-scrollbar-thumb { background: var(--bg-surface-elevated); border-radius: 10px; }

body {
    overflow-x: hidden;
    background-color: var(--bg-base);
}

a {
    color: var(--text-accent);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: #4eb0ff;
}

ul {
    list-style: none;
}

/* Typography Utility */
h1 { font: var(--text-h1); letter-spacing: -0.02em; }
h2 { font: var(--text-h2); letter-spacing: -0.015em; margin-bottom: var(--space-sm); }
h3 { font: var(--text-h3); letter-spacing: -0.01em; margin-bottom: var(--space-xs); }
p { color: var(--text-secondary); margin-bottom: var(--space-sm); }
strong { color: var(--text-primary); }

.text-center { text-align: center; }
.max-w-text { max-width: 700px; margin: 0 auto; }
.mt-sm { margin-top: var(--space-sm); }
.mt-xl { margin-top: var(--space-xl); }

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

.section {
    padding: var(--space-xl) 0;
}

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

/* ==========================================================================
   Glassmorphism Navigation
   ========================================================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--nav-height);
    background: var(--bg-glass-nav);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    z-index: 1000;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    display: flex;
    align-items: center;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-md);
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-size: 1.25rem;
    font-weight: 800;
    letter-spacing: -0.04em;
    position: relative;
    padding-left: 26px;
    display: inline-flex;
    align-items: center;
    background: linear-gradient(135deg, #ffffff 30%, #86868b 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-decoration: none;
}

.nav-logo::before {
    content: '';
    position: absolute;
    left: 0;
    width: 18px;
    height: 18px;
    background: linear-gradient(135deg, #0071e3 0%, #42a1ec 100%);
    border-radius: 50%;
    box-shadow: 0 2px 8px rgba(0, 113, 227, 0.4);
}

.nav-links {
    display: flex;
    gap: 1.5rem;
}

.nav-links a {
    color: var(--text-primary);
    font-size: 0.85rem;
    opacity: 0.8;
}

.nav-links a:hover {
    opacity: 1;
}

@media (max-width: 768px) {
    .nav-links { display: none; /* In a full build, add mobile menu */ }
}

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

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: radial-gradient(circle at 15% 50%, rgba(41, 151, 255, 0.15), transparent 25%),
                radial-gradient(circle at 85% 30%, rgba(255, 255, 255, 0.05), transparent 25%);
    background-color: transparent;
}


.hero-content {
    max-width: 800px;
    padding: var(--space-md);
}

.hero-title {
    font: var(--text-display);
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
    letter-spacing: -0.04em;
    background: linear-gradient(180deg, #fff 0%, #a1a1a6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--text-primary);
    font-weight: 400;
    margin-bottom: var(--space-sm);
}

.hero-text {
    font-size: 1.2rem;
    margin-bottom: var(--space-md);
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 999px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-primary {
    background-color: var(--text-primary);
    color: var(--bg-base);
}
.btn-primary:hover {
    background-color: #d2d2d7;
    color: var(--bg-base);
}

.btn-secondary {
    background-color: transparent;
    color: var(--text-primary);
    border: 1px solid rgba(255,255,255,0.3);
}
.btn-secondary:hover {
    background-color: rgba(255,255,255,0.1);
}

/* ==========================================================================
   Bento Grid (Services)
   ========================================================================== */
.section-header {
    text-align: center;
    margin-bottom: var(--space-lg);
}
.section-desc {
    font-size: 1.25rem;
    max-width: 600px;
    margin: 0 auto;
}

.bento-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    auto-rows: 300px;
}

.bento-card {
    background: var(--bg-surface-elevated);
    border-radius: var(--radius-lg);
    padding: var(--space-md);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    transition: transform 0.3s cubic-bezier(0.25, 1, 0.5, 1), box-shadow 0.3s ease;
    border: 1px solid rgba(255,255,255,0.08);
}

.card-img-bg {
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.bento-card:hover {
    transform: scale(1.02);
    box-shadow: 0 20px 40px rgba(0,0,0,0.4);
    border-color: rgba(255,255,255,0.1);
}

.bento-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: linear-gradient(180deg, rgba(0,0,0,0.3) 0%, rgba(0,0,0,0.7) 60%, rgba(0,0,0,0.95) 100%);
    z-index: 1;
}

.bento-content {
    position: relative;
    z-index: 2;
    text-shadow: 0 2px 10px rgba(0,0,0,0.9), 0 1px 3px rgba(0,0,0,0.8);
}

.bento-title {
    color: var(--text-primary);
    text-shadow: 0 2px 10px rgba(0,0,0,0.9), 0 1px 3px rgba(0,0,0,0.8);
}

@media (min-width: 768px) {
    .bento-grid { grid-template-columns: repeat(4, 1fr); grid-auto-rows: 250px; }
    .bento-large { grid-column: span 2; grid-row: span 2; }
    .bento-tall { grid-column: span 1; grid-row: span 2; }
}

/* ==========================================================================
   Feature Layouts
   ========================================================================== */
.feature-layout {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}
.feature-layout.reverse {
    flex-direction: row-reverse;
}
.feature-text {
    flex: 1;
}
.feature-subtitle {
    color: var(--text-primary);
    font-size: 1.5rem;
    margin-bottom: var(--space-sm);
}
.feature-list {
    margin-top: var(--space-sm);
}
.feature-list li {
    margin-bottom: var(--space-xs);
    color: var(--text-secondary);
    position: relative;
    padding-left: 1.5rem;
}
.feature-list li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--text-accent);
}

.grid-2-col {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-md);
    margin-top: var(--space-md);
}

.info-card {
    background: var(--bg-surface-elevated);
    padding: var(--space-md);
    border-radius: var(--radius-md);
    border: 1px solid rgba(255,255,255,0.08);
}
.info-card h3 { color: var(--text-primary); }

.about-card {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
    background: var(--bg-surface);
    padding: var(--space-lg) 0 var(--space-md);
    border-top: 1px solid rgba(255,255,255,0.1);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-md);
}

.footer-col h4 {
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.footer-link, .footer-links a {
    color: var(--text-secondary);
    font-size: 0.95rem;
}
.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-bottom {
    margin-top: var(--space-xl);
    padding-top: var(--space-md);
    border-top: 1px solid rgba(255,255,255,0.05);
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* ==========================================================================
   Scroll Reveal Animations
   ========================================================================== */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 1s cubic-bezier(0.25, 1, 0.5, 1);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}