/* ========================================
   Dein KI-Haus — Dark Premium Theme
   ======================================== */

/* --- Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,400;0,9..40,500;0,9..40,600;0,9..40,700;0,9..40,800;1,9..40,400&display=swap');

/* --- Variables --- */
:root {
    --bg: #07080d;
    --bg-card: rgba(255,255,255,0.035);
    --bg-card-hover: rgba(255,255,255,0.06);
    --bg-nav: rgba(7,8,13,0.8);
    --text: #e2e8f0;
    --text-muted: #8896ab;
    --text-dim: #5a6577;
    --border: rgba(255,255,255,0.07);
    --border-hover: rgba(99,179,237,0.25);
    --accent-1: #06b6d4;
    --accent-2: #3b82f6;
    --accent-3: #8b5cf6;
    --glow-cyan: rgba(6,182,212,0.15);
    --glow-blue: rgba(59,130,246,0.15);
    --glow-purple: rgba(139,92,246,0.15);
    --gradient: linear-gradient(135deg, var(--accent-1), var(--accent-2), var(--accent-3));
    --radius: 16px;
    --radius-sm: 10px;
}

/* --- Reset --- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    position: relative;
    font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg);
    background-image:
        radial-gradient(ellipse 60% 35% at 20% 20%, rgba(6,182,212,0.07) 0%, transparent 40%),
        radial-gradient(ellipse 45% 30% at 80% 45%, rgba(139,92,246,0.06) 0%, transparent 40%),
        radial-gradient(ellipse 50% 35% at 50% 75%, rgba(59,130,246,0.05) 0%, transparent 40%),
        radial-gradient(ellipse 40% 25% at 10% 90%, rgba(139,92,246,0.04) 0%, transparent 40%);
    background-attachment: scroll;
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* --- Selection --- */
::selection { background: rgba(59,130,246,0.3); color: #fff; }

/* --- Global ambient wrapper (iOS-safe, no position:fixed) --- */
.ambient {
    position: absolute;
    inset: 0;
    overflow: hidden;
    pointer-events: none;
    z-index: -1;
}
.ambient .orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    animation: drift 18s ease-in-out infinite;
}
.ambient .orb-1 {
    width: 600px; height: 600px;
    background: radial-gradient(circle, var(--accent-1), transparent 50%);
    top: 0; left: -15%;
    opacity: 0.13;
}
.ambient .orb-2 {
    width: 500px; height: 500px;
    background: radial-gradient(circle, var(--accent-2), transparent 50%);
    top: 40%; left: 30%;
    opacity: 0.10;
    animation-delay: -6s;
}
.ambient .orb-3 {
    width: 650px; height: 650px;
    background: radial-gradient(circle, var(--accent-3), transparent 50%);
    top: 60%; right: -15%;
    opacity: 0.18;
    animation-delay: -12s;
}

@keyframes drift {
    0%, 100% { transform: translate(0, 0); }
    25% { transform: translate(80px, -50px); }
    50% { transform: translate(-40px, 60px); }
    75% { transform: translate(50px, 30px); }
}

/* ========================================
   Navigation
   ======================================== */
nav {
    position: fixed; top: 0; width: 100%; z-index: 100;
    background: var(--bg-nav);
    backdrop-filter: blur(24px) saturate(1.4);
    -webkit-backdrop-filter: blur(24px) saturate(1.4);
    border-bottom: 1px solid var(--border);
    padding: 0.7rem 2rem;
    display: flex; justify-content: space-between; align-items: center;
}
nav .logo {
    display: flex; align-items: center; gap: 0.7rem;
    text-decoration: none;
}
nav .logo img { height: 38px; filter: brightness(1.1); }
nav .logo span {
    font-size: 1.15rem; font-weight: 700;
    color: #c0dff0;
}
nav .logo span em {
    font-style: normal;
    color: #c026d3;
}
nav .links { display: flex; gap: 1.8rem; align-items: center; }
nav .links a {
    text-decoration: none; color: var(--text-muted);
    font-size: 0.88rem; font-weight: 500;
    transition: color 0.25s;
}
nav .links a:hover { color: var(--text); }

/* Language switch */
.lang-switch {
    display: flex; gap: 1px;
    border: 1px solid var(--border); border-radius: 8px;
    overflow: hidden; background: rgba(255,255,255,0.03);
}
.lang-switch a {
    padding: 0.25rem 0.55rem; font-size: 0.72rem; font-weight: 600;
    text-decoration: none; color: var(--text-dim);
    transition: all 0.25s;
}
.lang-switch a.active,
.lang-switch a:hover {
    background: var(--gradient); color: #fff;
    -webkit-text-fill-color: #fff;
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    position: relative;
    padding: 10rem 2rem 6rem;
    text-align: center;
}

/* Animated gradient orbs */
.hero::before,
.hero::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.25;
    animation: float 12s ease-in-out infinite;
}
.hero::before {
    width: 500px; height: 500px;
    background: radial-gradient(circle, var(--accent-1), transparent 70%);
    top: -100px; left: -100px;
    animation-delay: 0s;
}
.hero::after {
    width: 600px; height: 600px;
    background: radial-gradient(circle, var(--accent-3), transparent 70%);
    bottom: -350px; right: -150px;
    animation-delay: -6s;
}

/* Grid overlay */
.hero-grid {
    position: absolute; inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
    pointer-events: none;
}

.hero-content { position: relative; z-index: 2; }

.hero img {
    width: 120px; margin-bottom: 1.5rem;
    filter: drop-shadow(0 0 40px rgba(6,182,212,0.25));
    animation: fadeInDown 0.8s ease-out;
}

.hero h1 {
    font-size: 3.5rem; font-weight: 800;
    letter-spacing: -0.03em;
    background: linear-gradient(135deg, #fff 0%, var(--accent-1) 50%, var(--accent-2) 100%);
    -webkit-background-clip: text; background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 1rem;
    animation: fadeInUp 0.8s ease-out 0.15s both;
}

.hero p {
    font-size: 1.15rem; color: var(--text-muted);
    max-width: 500px; margin: 0 auto 2.5rem;
    animation: fadeInUp 0.8s ease-out 0.3s both;
}

.hero .region {
    display: inline-flex; align-items: center; gap: 0.5rem;
    background: rgba(255,255,255,0.05);
    backdrop-filter: blur(12px);
    padding: 0.5rem 1.4rem; border-radius: 50px;
    font-size: 0.82rem; color: var(--text-muted); font-weight: 500;
    border: 1px solid var(--border);
    animation: fadeInUp 0.8s ease-out 0.45s both;
}

/* ========================================
   Services / Cards
   ======================================== */
.services {
    position: relative;
    padding: 5rem 2rem 6rem;
    max-width: 1100px; margin: 0 auto;
}
.services::before {
    content: '';
    position: absolute;
    width: 500px; height: 500px;
    border-radius: 50%;
    background: radial-gradient(circle, var(--accent-2), transparent 50%);
    filter: blur(100px);
    opacity: 0.12;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
    animation: float 15s ease-in-out infinite;
}

.services h2 {
    text-align: center; font-size: 2.2rem; font-weight: 700;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, #fff, var(--text-muted));
    -webkit-background-clip: text; background-clip: text;
    -webkit-text-fill-color: transparent;
}

.services .subtitle {
    text-align: center; color: var(--text-muted);
    margin-bottom: 3.5rem; font-size: 1rem;
}

.cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.card {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2.2rem 2rem;
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    overflow: hidden;
}

/* Top gradient line */
.card::before {
    content: '';
    position: absolute; top: 0; left: 0; right: 0;
    height: 2px; opacity: 0;
    transition: opacity 0.4s;
}
.card:nth-child(1)::before { background: linear-gradient(90deg, var(--accent-1), var(--accent-2)); }
.card:nth-child(2)::before { background: linear-gradient(90deg, var(--accent-2), var(--accent-3)); }
.card:nth-child(3)::before { background: linear-gradient(90deg, var(--accent-1), var(--accent-3)); }

.card:hover {
    transform: translateY(-6px);
    background: var(--bg-card-hover);
    border-color: var(--border-hover);
    box-shadow: 0 20px 60px -15px rgba(0,0,0,0.5);
}
.card:hover::before { opacity: 1; }

/* Glow effect on hover */
.card:nth-child(1):hover { box-shadow: 0 20px 60px -15px rgba(0,0,0,0.5), 0 0 40px var(--glow-cyan); }
.card:nth-child(2):hover { box-shadow: 0 20px 60px -15px rgba(0,0,0,0.5), 0 0 40px var(--glow-blue); }
.card:nth-child(3):hover { box-shadow: 0 20px 60px -15px rgba(0,0,0,0.5), 0 0 40px var(--glow-purple); }

.card .icon {
    position: relative;
    width: 80px; height: 80px; border-radius: 20px;
    display: flex; align-items: center; justify-content: center;
    margin-bottom: 1.6rem;
}
.card .icon svg { width: 44px; height: 44px; position: relative; z-index: 1; }
/* Glow pulse behind icon */
.card .icon::after {
    content: '';
    position: absolute; inset: -8px;
    border-radius: 24px;
    opacity: 0;
    transition: opacity 0.4s;
    filter: blur(16px);
}
.card:hover .icon::after { opacity: 1; }
.card:nth-child(1) .icon { background: rgba(6,182,212,0.10); }
.card:nth-child(2) .icon { background: rgba(59,130,246,0.10); }
.card:nth-child(3) .icon { background: rgba(139,92,246,0.10); }
.card:nth-child(1) .icon::after { background: rgba(6,182,212,0.25); }
.card:nth-child(2) .icon::after { background: rgba(59,130,246,0.25); }
.card:nth-child(3) .icon::after { background: rgba(139,92,246,0.25); }

.card h3 {
    font-size: 1.15rem; font-weight: 700;
    margin-bottom: 0.6rem; color: #fff;
}
.card > p {
    color: var(--text-muted); font-size: 0.88rem;
    margin-bottom: 1.2rem; line-height: 1.6;
}
.card ul { list-style: none; }
.card ul li {
    padding: 0.35rem 0; font-size: 0.84rem;
    color: var(--text-muted);
    display: flex; align-items: center; gap: 0.5rem;
}
.card ul li::before {
    content: '';
    width: 5px; height: 5px; border-radius: 50%;
    flex-shrink: 0;
}
.card:nth-child(1) ul li::before { background: var(--accent-1); box-shadow: 0 0 6px var(--accent-1); }
.card:nth-child(2) ul li::before { background: var(--accent-2); box-shadow: 0 0 6px var(--accent-2); }
.card:nth-child(3) ul li::before { background: var(--accent-3); box-shadow: 0 0 6px var(--accent-3); }

/* Disclaimer */
.disclaimer {
    background: rgba(251,191,36,0.06);
    border: 1px solid rgba(251,191,36,0.12);
    border-radius: var(--radius-sm);
    padding: 0.9rem 1.4rem;
    margin: 2.5rem auto 0;
    max-width: 1100px;
    font-size: 0.78rem; color: #d4a843;
}
.disclaimer strong { color: #e5b94e; }

/* ========================================
   CTA Section
   ======================================== */
.cta {
    position: relative;
    text-align: center;
    padding: 5rem 2rem;
    overflow: hidden;
}

/* Gradient background + orb */
.cta::before {
    content: '';
    position: absolute; inset: 0;
    background:
        radial-gradient(ellipse at 30% 50%, rgba(139,92,246,0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 70% 50%, rgba(6,182,212,0.08) 0%, transparent 50%),
        linear-gradient(180deg, transparent 0%, rgba(59,130,246,0.03) 50%, transparent 100%);
    pointer-events: none;
}

.cta h2 {
    position: relative;
    font-size: 2rem; font-weight: 700;
    margin-bottom: 0.8rem; color: #fff;
}
.cta p {
    position: relative;
    color: var(--text-muted);
    margin-bottom: 2rem;
    max-width: 450px; margin-left: auto; margin-right: auto;
}
.cta a.btn {
    position: relative;
    display: inline-block;
    background: var(--gradient);
    color: #fff; font-weight: 600; font-size: 0.95rem;
    padding: 0.85rem 2.5rem; border-radius: var(--radius-sm);
    text-decoration: none;
    transition: all 0.3s;
    box-shadow: 0 4px 20px rgba(59,130,246,0.3);
}
.cta a.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(59,130,246,0.4);
}

/* ========================================
   Footer
   ======================================== */
footer {
    padding: 2rem;
    text-align: center;
    border-top: 1px solid var(--border);
    font-size: 0.78rem; color: var(--text-dim);
}
footer a {
    color: var(--text-dim);
    margin: 0 0.5rem;
    text-decoration: none;
    transition: color 0.25s;
}
footer a:hover { color: var(--text-muted); }

/* ========================================
   Legal Pages
   ======================================== */
.legal {
    max-width: 800px; margin: 0 auto;
    padding: 5rem 2rem 3rem;
}
.legal h1 {
    font-size: 2rem; font-weight: 700;
    margin-bottom: 2rem;
    background: var(--gradient);
    -webkit-background-clip: text; background-clip: text;
    -webkit-text-fill-color: transparent;
}
.legal h2 {
    font-size: 1.15rem; font-weight: 600;
    margin-top: 2rem; margin-bottom: 0.6rem;
    color: var(--text);
}
.legal h3 {
    font-size: 0.95rem; font-weight: 600;
    margin-top: 1.2rem; margin-bottom: 0.4rem;
    color: var(--text-muted);
}
.legal p, .legal li {
    color: var(--text-muted);
    margin-bottom: 0.8rem; font-size: 0.9rem;
    line-height: 1.7;
}
.legal ul { padding-left: 1.5rem; }
.legal a {
    color: var(--accent-1);
    text-decoration: none;
    transition: color 0.25s;
}
.legal a:hover { color: var(--accent-2); }

/* ========================================
   Animations
   ======================================== */
@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -30px) scale(1.05); }
    66% { transform: translate(-20px, 20px) scale(0.95); }
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(24px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-16px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Scroll-triggered reveal */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease-out, transform 0.7s ease-out;
}
.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}
.reveal:nth-child(2) { transition-delay: 0.1s; }
.reveal:nth-child(3) { transition-delay: 0.2s; }

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 768px) {
    nav { padding: 0.6rem 1.2rem; }
    nav .links { display: none; }
    .hero { padding: 7rem 1.5rem 4rem; }
    .hero h1 { font-size: 2.2rem; }
    .hero img { width: 90px; }
    .hero p { font-size: 1rem; }
    .cards { grid-template-columns: 1fr; }
    .services { padding: 3rem 1.2rem 4rem; }
    .cta { padding: 3rem 1.5rem; }
}

@media (max-width: 480px) {
    .hero h1 { font-size: 1.8rem; }
    .services h2 { font-size: 1.6rem; }
}