/* ==========================================================================
   appzept – Gemeinsames Design-Fundament
   Genutzt von index.html und allen Projekt-Detailseiten
   ========================================================================== */

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

:root {
  --primary: #6366f1;
  --primary-dark: #4f46e5;
  --primary-light: #a5b4fc;
  --bg: #0f0f13;
  --bg-card: #1a1a24;
  --bg-card-hover: #22223a;
  --text: #e4e4eb;
  --text-muted: #9393a8;
  --accent: #22d3ee;
  --gradient: linear-gradient(135deg, #6366f1, #22d3ee);
  --radius: 16px;
  --maxw: 1100px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family:
    "Inter",
    system-ui,
    -apple-system,
    sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img {
  max-width: 100%;
}

/* --- NAV --- */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(15, 15, 19, 0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(99, 102, 241, 0.1);
}

.logo-link {
  display: flex;
  align-items: center;
  text-decoration: none;
}
.logo-img {
  height: 36px;
  width: auto;
}
.owner-name {
  font-size: 0.7rem;
  color: var(--text-muted);
  letter-spacing: 0.3px;
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
  align-items: center;
}

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s;
}

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

.hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  flex-direction: column;
  gap: 5px;
}
.hamburger span {
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: 0.3s;
}

/* --- BUTTONS --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  border-radius: 100px;
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.25s;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--gradient);
  color: #fff;
  box-shadow: 0 4px 24px rgba(99, 102, 241, 0.3);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(99, 102, 241, 0.4);
}

.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1px solid rgba(255, 255, 255, 0.15);
}
.btn-outline:hover {
  border-color: var(--primary);
  background: rgba(99, 102, 241, 0.06);
}

.btn-group {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* --- SECTIONS --- */
section {
  padding: 6rem 2rem;
}
.container {
  max-width: var(--maxw);
  margin: 0 auto;
}

.section-label {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 700;
  margin-bottom: 1rem;
  letter-spacing: -0.5px;
}

.section-desc {
  color: var(--text-muted);
  max-width: 600px;
  font-size: 1.05rem;
  margin-bottom: 3rem;
}

/* --- FAQ --- */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 1rem;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 12px;
  overflow: hidden;
  transition: border-color 0.2s;
}
.faq-item[open] {
  border-color: rgba(99, 102, 241, 0.25);
}

.faq-item summary {
  padding: 1.25rem 1.5rem;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.98rem;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-item summary::after {
  content: "+";
  font-size: 1.4rem;
  font-weight: 300;
  color: var(--primary-light);
  transition: transform 0.2s;
  flex-shrink: 0;
}
.faq-item[open] summary::after {
  content: "−";
}

.faq-item-body {
  padding: 0 1.5rem 1.25rem;
  color: var(--text-muted);
  font-size: 0.93rem;
  line-height: 1.7;
}

/* --- FOOTER --- */
footer {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 3rem 2rem;
}
.footer-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}
.footer-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
  flex-wrap: wrap;
}
.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.85rem;
  transition: color 0.2s;
}
.footer-links a:hover {
  color: var(--text);
}
.footer-copy {
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* --- RESPONSIVE NAV --- */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  .hamburger {
    display: flex;
  }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(15, 15, 19, 0.97);
    backdrop-filter: blur(16px);
    padding: 1.5rem 2rem;
    border-bottom: 1px solid rgba(99, 102, 241, 0.1);
    gap: 1.25rem;
    align-items: flex-start;
  }
}