/* ============ Globale Variablen ============ */
:root {
  --bg: #0a0a0f;
  --bg-2: #13131c;
  --card: #1a1a26;
  --border: #2a2a3a;
  --text: #f5f5fa;
  --muted: #9999aa;
  --accent: #7c3aed;
  --accent-2: #a855f7;
  --danger: #ef4444;
  --success: #10b981;
  --radius: 12px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

body {
  min-height: 100vh;
  background: radial-gradient(ellipse at top, #1e1b4b 0%, var(--bg) 60%);
}

a { color: var(--accent-2); text-decoration: none; }
a:hover { text-decoration: underline; }

button, .btn {
  cursor: pointer;
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 10px 18px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 14px;
  transition: all 0.15s ease;
}
button:hover, .btn:hover { background: var(--accent-2); transform: translateY(-1px); }
button:active, .btn:active { transform: translateY(0); }
button:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-secondary {
  background: var(--card);
  border: 1px solid var(--border);
}
.btn-secondary:hover { background: var(--border); }

.btn-danger { background: var(--danger); }
.btn-danger:hover { background: #dc2626; }

input, textarea, select {
  width: 100%;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
  color: var(--text);
  font-family: inherit;
  font-size: 14px;
}
input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.2);
}
label { font-size: 13px; color: var(--muted); display: block; margin-bottom: 6px; font-weight: 500; }

/* ============ Layout ============ */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px;
}

.auth-box {
  max-width: 420px;
  margin: 80px auto;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
}

.auth-box h1 { margin: 0 0 8px; font-size: 24px; }
.auth-box p.sub { color: var(--muted); margin: 0 0 24px; font-size: 14px; }

.form-group { margin-bottom: 16px; }
.form-row { display: flex; gap: 12px; }
.form-row > * { flex: 1; }

.alert {
  padding: 12px 14px;
  border-radius: 8px;
  font-size: 14px;
  margin-bottom: 16px;
}
.alert-error { background: rgba(239, 68, 68, 0.1); border: 1px solid var(--danger); color: #fca5a5; }
.alert-success { background: rgba(16, 185, 129, 0.1); border: 1px solid var(--success); color: #6ee7b7; }
.alert-info { background: rgba(124, 58, 237, 0.1); border: 1px solid var(--accent); color: #c4b5fd; }
.hidden { display: none !important; }

/* ============ Landing ============ */
.landing {
  text-align: center;
  padding: 100px 24px;
}
.landing h1 {
  font-size: clamp(36px, 6vw, 64px);
  margin: 0 0 16px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.landing p { font-size: 18px; color: var(--muted); margin: 0 0 32px; }
.landing .cta { display: inline-flex; gap: 12px; }

/* ============ Dashboard ============ */
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  background: var(--bg-2);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(10px);
}
.topbar .logo { font-weight: 700; font-size: 18px; }
.topbar .nav { display: flex; gap: 12px; align-items: center; }

.dash-grid {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 24px;
  margin-top: 24px;
}
@media (max-width: 900px) {
  .dash-grid { grid-template-columns: 1fr; }
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 16px;
}
.card h2 { margin: 0 0 16px; font-size: 18px; }
.card h3 { margin: 16px 0 8px; font-size: 14px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.05em; }

.upload-row {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-bottom: 12px;
}
.upload-row .preview {
  width: 60px; height: 60px; border-radius: 50%; background: var(--bg-2);
  border: 1px solid var(--border); object-fit: cover; flex-shrink: 0;
}
.upload-row.bg .preview { border-radius: 8px; }

.link-item {
  display: flex; gap: 8px; margin-bottom: 8px;
}
.link-item select { flex: 0 0 130px; }
.link-item input { flex: 1; }
.link-item button { flex: 0 0 auto; padding: 8px 12px; }

.preview-frame {
  position: sticky;
  top: 80px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  height: 600px;
  background: var(--bg-2);
}
.preview-frame iframe {
  width: 100%; height: 100%; border: 0;
}

.invite-row {
  display: flex; align-items: center; gap: 8px;
  background: var(--bg-2); padding: 8px 12px; border-radius: 8px; margin-bottom: 6px;
  font-family: monospace; font-size: 13px;
}
.invite-row .status { font-size: 11px; padding: 2px 6px; border-radius: 4px; margin-left: auto; }
.invite-row .status.open { background: rgba(16, 185, 129, 0.2); color: var(--success); }
.invite-row .status.used { background: rgba(153, 153, 170, 0.2); color: var(--muted); }