/* Apple-inspiriertes Design: System-Font, Karten, Dark Mode, mobile-first */
:root {
  --bg: #f5f5f7;
  --card: #ffffff;
  --text: #1d1d1f;
  --muted: #6e6e73;
  --accent: #3aa02c;        /* WBK-Grün (#4dba38), leicht abgedunkelt für Kontrast */
  --accent-hover: #4dba38;
  --border: rgba(0, 0, 0, 0.08);
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
  --danger: #ff3b30;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #000000;
    --card: #1c1c1e;
    --text: #f5f5f7;
    --muted: #98989d;
    --accent: #5ecc4a;      /* WBK-Grün, hell für Dark Mode */
    --accent-hover: #74dd61;
    --border: rgba(255, 255, 255, 0.1);
    --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* ---------- Header ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  background: color-mix(in srgb, var(--bg) 75%, transparent);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: 980px;
  margin: 0 auto;
  padding: 0.8rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav a {
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
  font-size: 1.05rem;
}

.nav .nav-sub {
  color: var(--muted);
  font-weight: 400;
  font-size: 0.9rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.brand img {
  width: 28px;
  height: 28px;
  border-radius: 7px;
}

/* ---------- Layout ---------- */
.container {
  max-width: 980px;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 4rem;
}

.hero {
  text-align: center;
  padding: 2.5rem 1rem 1.5rem;
}

.hero h1 {
  font-size: clamp(1.8rem, 5vw, 2.8rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 0.4rem;
}

.hero p {
  color: var(--muted);
  font-size: 1.1rem;
  margin: 0;
}

/* ---------- Karten-Grid ---------- */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.card {
  background: var(--card);
  border-radius: 18px;
  box-shadow: var(--shadow);
  overflow: hidden;
  text-decoration: none;
  color: var(--text);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  display: block;
}

a.card:hover {
  transform: translateY(-3px) scale(1.01);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
}

.card-thumb {
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, #3a3a3c, #1c1c1e);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  overflow: hidden;
}

.card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.card-body { padding: 1.1rem 1.25rem 1.3rem; }

.card-body h3 {
  margin: 0 0 0.3rem;
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.card-body p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ---------- Player-Seite ---------- */
.player-wrap {
  background: #000;
  border-radius: 18px;
  overflow: hidden;
  box-shadow: var(--shadow);
}

video {
  display: block;
  width: 100%;
  max-height: 70vh;
  background: #000;
}

.video-title {
  font-size: clamp(1.4rem, 4vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 1.5rem 0 0.3rem;
}

.video-desc { color: var(--muted); margin: 0 0 1.5rem; }

/* ---------- Kapitel ---------- */
.panel {
  background: var(--card);
  border-radius: 18px;
  box-shadow: var(--shadow);
  padding: 1.25rem 1.4rem;
  margin-top: 1.25rem;
}

.panel h2 {
  font-size: 1.15rem;
  font-weight: 600;
  margin: 0 0 0.9rem;
}

.chapter-list { list-style: none; margin: 0; padding: 0; }

.chapter-list li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.6rem 0.4rem;
  border-bottom: 1px solid var(--border);
}

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

.chapter-time {
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  font-size: 0.85rem;
  border: none;
  border-radius: 8px;
  padding: 0.3rem 0.6rem;
  cursor: pointer;
  flex-shrink: 0;
}

.chapter-time:hover { background: color-mix(in srgb, var(--accent) 22%, transparent); }

.chapter-title { flex: 1; font-size: 0.98rem; }

.chapter-delete {
  background: none;
  border: none;
  color: var(--muted);
  cursor: pointer;
  font-size: 1rem;
  padding: 0.25rem 0.4rem;
  border-radius: 6px;
}

.chapter-delete:hover { color: var(--danger); background: color-mix(in srgb, var(--danger) 10%, transparent); }

.chapter-empty { color: var(--muted); font-size: 0.95rem; padding: 0.4rem; }

/* ---------- Formulare & Buttons ---------- */
.add-form {
  display: flex;
  gap: 0.6rem;
  margin-top: 1rem;
  flex-wrap: wrap;
}

input[type="text"],
input[type="password"],
textarea {
  font: inherit;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.6rem 0.9rem;
  outline: none;
  min-width: 0;
}

input:focus, textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 25%, transparent); }

.add-form input[type="text"] { flex: 1 1 200px; }

.btn {
  font: inherit;
  font-weight: 600;
  color: #fff;
  background: var(--accent);
  border: none;
  border-radius: 980px; /* Apple-Pill */
  padding: 0.6rem 1.4rem;
  cursor: pointer;
  transition: background 0.15s ease;
  text-decoration: none;
  display: inline-block;
  text-align: center;
}

.btn:hover { background: var(--accent-hover); }

.btn-secondary {
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  color: var(--accent);
}

.btn-secondary:hover { background: color-mix(in srgb, var(--accent) 22%, transparent); }

.hint { color: var(--muted); font-size: 0.85rem; margin-top: 0.6rem; }

.footer {
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
  padding: 2rem 1rem;
}

.footer img {
  display: block;
  height: 34px;
  margin: 0 auto 0.6rem;
  opacity: 0.9;
}

/* ---------- Meldungen ---------- */
.notice {
  background: var(--card);
  border-radius: 18px;
  box-shadow: var(--shadow);
  padding: 2rem;
  text-align: center;
  color: var(--muted);
  margin-top: 2rem;
}