:root {
  --bg: #0f172a; --bg2: #1e293b; --border: #334155; --text: #e2e8f0; --text2: #94a3b8; --text3: #64748b;
  --accent: #6366f1; --accent-hover: #4f46e5; --danger: #dc2626; --danger-hover: #b91c1c;
  --input-bg: #0f172a; --success-bg: #14532d; --success-text: #86efac; --error-bg: #7f1d1d; --error-text: #fca5a5;
}
[data-theme="light"] {
  --bg: #f1f5f9; --bg2: #ffffff; --border: #e2e8f0; --text: #1e293b; --text2: #64748b; --text3: #94a3b8;
  --accent: #6366f1; --accent-hover: #4f46e5; --danger: #dc2626; --danger-hover: #b91c1c;
  --input-bg: #f8fafc; --success-bg: #dcfce7; --success-text: #166534; --error-bg: #fee2e2; --error-text: #991b1b;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; background: var(--bg); color: var(--text); min-height: 100vh; }
nav { display: flex; justify-content: space-between; align-items: center; padding: 1rem 2rem; background: var(--bg2); border-bottom: 1px solid var(--border); flex-wrap: wrap; gap: 0.5rem; }
nav span { font-weight: 700; font-size: 1.1rem; }
nav div { display: flex; gap: 0.75rem; align-items: center; flex-wrap: wrap; }
nav a { color: var(--text2); text-decoration: none; font-size: 0.9rem; }
nav a:hover { color: var(--text); }
nav button { font-size: 0.85rem; }
.container { max-width: 700px; margin: 2rem auto; padding: 0 1rem; }
.card { background: var(--bg2); border-radius: 12px; padding: 2rem; border: 1px solid var(--border); }
h1 { margin-bottom: 1.5rem; font-size: 1.5rem; }
label { display: block; margin: 0.75rem 0 0.25rem; font-size: 0.9rem; color: var(--text2); }
input[type="text"], input[type="password"], input[type="number"], input[type="email"], select {
  width: 100%; padding: 0.6rem 0.8rem; border: 1px solid var(--border); border-radius: 6px;
  background: var(--input-bg); color: var(--text); font-size: 1rem;
}
input:focus { outline: none; border-color: var(--accent); }
button { padding: 0.6rem 1.2rem; border: none; border-radius: 6px; cursor: pointer; font-size: 0.9rem; background: var(--accent); color: white; }
button:hover { background: var(--accent-hover); }
button.danger { background: var(--danger); }
button.danger:hover { background: var(--danger-hover); }
.link { margin-top: 1rem; text-align: center; color: var(--text2); }
.link a { color: #818cf8; text-decoration: none; }
.error { background: var(--error-bg); color: var(--error-text); padding: 0.6rem 1rem; border-radius: 6px; margin-bottom: 1rem; }
.success { background: var(--success-bg); color: var(--success-text); padding: 0.6rem 1rem; border-radius: 6px; margin-bottom: 1rem; }
.quota { text-align: right; color: var(--text2); margin-bottom: 1rem; }
.create-form { display: flex; gap: 0.5rem; margin-bottom: 1.5rem; flex-wrap: wrap; align-items: end; }
.input-group { display: flex; align-items: center; gap: 0; flex: 1; min-width: 200px; }
.input-group input { border-radius: 6px 0 0 6px; }
.domain { background: var(--border); padding: 0.6rem 0.8rem; border-radius: 0 6px 6px 0; font-size: 0.9rem; white-space: nowrap; border: 1px solid var(--border); border-left: 0; }
.create-form input[type="password"], .create-form input[type="text"] { width: auto; flex: 0.7; min-width: 140px; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 0.6rem; text-align: left; border-bottom: 1px solid var(--border); }
th { color: var(--text2); font-size: 0.85rem; text-transform: uppercase; }
.actions { display: flex; gap: 0.4rem; }
.email-link { color: #818cf8; text-decoration: none; }
.email-link:hover { text-decoration: underline; }
.badge { background: var(--accent); color: white; padding: 0.1rem 0.5rem; border-radius: 4px; font-size: 0.75rem; }
.modal { position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: rgba(0,0,0,0.6); display: flex; align-items: center; justify-content: center; z-index: 1000; }
.modal-content { background: var(--bg2); padding: 2rem; border-radius: 12px; min-width: 300px; max-width: 90vw; border: 1px solid var(--border); }
.modal-content h3 { margin-bottom: 0.5rem; }
.modal-content p { color: var(--text2); margin-bottom: 1rem; }
.modal-content input { margin-bottom: 1rem; }
.modal-actions { display: flex; gap: 0.5rem; justify-content: flex-end; }
.theme-toggle { background: var(--border); color: var(--text); padding: 0.4rem 0.6rem; font-size: 0.85rem; cursor: pointer; border: none; border-radius: 6px; }
.theme-toggle:hover { background: var(--text3); }

/* Mobile */
@media (max-width: 640px) {
  nav { padding: 0.75rem 1rem; }
  nav span { font-size: 0.95rem; }
  .container { margin: 1rem auto; }
  .card { padding: 1.25rem; }
  h1 { font-size: 1.25rem; }
  .create-form { flex-direction: column; }
  .input-group { min-width: 100%; }
  .create-form input[type="password"], .create-form input[type="text"] { width: 100%; min-width: 100%; flex: 1; }
  table { font-size: 0.85rem; }
  th, td { padding: 0.4rem 0.3rem; }
  .actions { flex-direction: column; gap: 0.3rem; }
  .actions button { width: 100%; font-size: 0.8rem; }
  .modal-content { min-width: auto; width: 90vw; padding: 1.5rem; }
  button { padding: 0.5rem 0.8rem; font-size: 0.85rem; }
}