:root {
  --bg: #0f1117;
  --surface: #1a1d27;
  --surface2: #242736;
  --border: #2e3148;
  --text: #e2e8f0;
  --text-muted: #94a3b8;
  --primary: #635bff;
  --primary-hover: #7c75ff;
  --danger: #ef4444;
  --danger-hover: #dc2626;
  --success: #22c55e;
  --warning: #f59e0b;
  --radius: 10px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; background: var(--bg); color: var(--text); min-height: 100vh; }

/* --- Auth screens --- */
.auth-container {
  display: flex; align-items: center; justify-content: center;
  min-height: 100vh; padding: 20px;
}
.auth-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 16px; padding: 40px; width: 100%; max-width: 420px;
}
.auth-card h1 { font-size: 24px; margin-bottom: 6px; }
.auth-card .subtitle { color: var(--text-muted); font-size: 14px; margin-bottom: 28px; }
.auth-card .logo { font-size: 32px; margin-bottom: 16px; display: block; }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.5px; }
.form-group input {
  width: 100%; padding: 11px 14px; background: var(--surface2);
  border: 1px solid var(--border); border-radius: var(--radius);
  color: var(--text); font-size: 15px; outline: none; transition: border-color .2s;
}
.form-group input:focus { border-color: var(--primary); }
.btn-primary {
  width: 100%; padding: 12px; background: var(--primary); color: #fff;
  border: none; border-radius: var(--radius); font-size: 15px;
  font-weight: 600; cursor: pointer; transition: background .2s;
}
.btn-primary:hover { background: var(--primary-hover); }
.btn-primary:disabled { opacity: .5; cursor: not-allowed; }
.auth-links { margin-top: 18px; text-align: center; font-size: 13px; color: var(--text-muted); }
.auth-links a { color: var(--primary); text-decoration: none; cursor: pointer; }
.auth-links a:hover { text-decoration: underline; }
.auth-msg { padding: 10px 14px; border-radius: var(--radius); font-size: 13px; margin-bottom: 16px; display: none; }
.auth-msg.error { display: block; background: rgba(239,68,68,.12); color: var(--danger); border: 1px solid rgba(239,68,68,.25); }
.auth-msg.success { display: block; background: rgba(34,197,94,.12); color: var(--success); border: 1px solid rgba(34,197,94,.25); }

/* --- Dashboard layout --- */
.app { display: none; }
.topbar {
  background: var(--surface); border-bottom: 1px solid var(--border);
  padding: 14px 28px; display: flex; align-items: center; justify-content: space-between;
}
.topbar-left { display: flex; align-items: center; gap: 12px; }
.topbar-left h1 { font-size: 18px; font-weight: 700; }
.topbar-left span { font-size: 12px; background: var(--primary); color: #fff; padding: 3px 10px; border-radius: 20px; }
.topbar-right { display: flex; align-items: center; gap: 16px; }
.topbar-right .user-name { font-size: 14px; color: var(--text-muted); }
.btn-logout {
  padding: 7px 16px; background: transparent; border: 1px solid var(--border);
  border-radius: var(--radius); color: var(--text-muted); font-size: 13px;
  cursor: pointer; transition: all .2s;
}
.btn-logout:hover { border-color: var(--danger); color: var(--danger); }

.main { padding: 28px; max-width: 1100px; margin: 0 auto; }

/* --- Sections --- */
.section {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 14px; padding: 28px; margin-bottom: 24px;
}
.section h2 { font-size: 18px; margin-bottom: 4px; }
.section .desc { font-size: 13px; color: var(--text-muted); margin-bottom: 20px; }
.key-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.key-grid.full { grid-template-columns: 1fr; }
.key-field label { display: block; font-size: 12px; font-weight: 600; color: var(--text-muted); margin-bottom: 5px; text-transform: uppercase; letter-spacing: .5px; }
.key-field input {
  width: 100%; padding: 10px 12px; background: var(--surface2);
  border: 1px solid var(--border); border-radius: var(--radius);
  color: var(--text); font-size: 14px; font-family: 'SF Mono', 'Fira Code', monospace; outline: none;
}
.key-field input:focus { border-color: var(--primary); }
.section-actions { margin-top: 18px; display: flex; gap: 10px; align-items: center; }
.btn {
  padding: 9px 20px; border-radius: var(--radius); font-size: 13px;
  font-weight: 600; cursor: pointer; border: none; transition: all .2s;
}
.btn-save { background: var(--primary); color: #fff; }
.btn-save:hover { background: var(--primary-hover); }
.btn-sm { padding: 7px 14px; font-size: 12px; }
.btn-danger { background: transparent; border: 1px solid var(--danger); color: var(--danger); }
.btn-danger:hover { background: var(--danger); color: #fff; }
.btn-outline { background: transparent; border: 1px solid var(--border); color: var(--text-muted); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }
.status-msg { font-size: 13px; color: var(--success); margin-left: 8px; }

/* --- License table --- */
.license-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
.license-header h2 { margin-bottom: 0; }
.license-table { width: 100%; border-collapse: collapse; }
.license-table th { text-align: left; font-size: 11px; text-transform: uppercase; letter-spacing: .5px; color: var(--text-muted); padding: 10px 12px; border-bottom: 1px solid var(--border); }
.license-table td { padding: 12px; border-bottom: 1px solid var(--border); font-size: 14px; }
.license-table tr:last-child td { border-bottom: none; }
.license-key { font-family: 'SF Mono', 'Fira Code', monospace; font-size: 13px; background: var(--surface2); padding: 4px 8px; border-radius: 6px; user-select: all; }
.badge { padding: 3px 10px; border-radius: 20px; font-size: 12px; font-weight: 600; }
.badge-active { background: rgba(34,197,94,.15); color: var(--success); }
.badge-revoked { background: rgba(239,68,68,.15); color: var(--danger); }
.sites-list { font-size: 12px; color: var(--text-muted); }

/* --- New license form --- */
.new-license-row { display: flex; gap: 10px; align-items: end; }
.new-license-row .form-group { margin-bottom: 0; flex: 1; }
.new-license-row input { padding: 9px 12px; }

/* --- Tabs --- */
.tab-nav { display: flex; gap: 4px; background: var(--surface2); border-radius: 8px; padding: 3px; margin-left: 20px; }
.tab-btn {
  padding: 7px 18px; border: none; background: transparent; color: var(--text-muted);
  font-size: 13px; font-weight: 600; border-radius: 6px; cursor: pointer; transition: all .2s;
}
.tab-btn.active { background: var(--primary); color: #fff; }
.tab-btn:not(.active):hover { color: var(--text); }
.page { display: none; }
.page.active { display: block; }

/* --- Activity/Monitoring tables --- */
.mono { font-family: 'SF Mono', 'Fira Code', monospace; font-size: 12px; }
.badge-activate { background: rgba(34,197,94,.15); color: var(--success); }
.badge-deactivate { background: rgba(239,68,68,.15); color: var(--danger); }
.empty-state { color: var(--text-muted); font-size: 14px; text-align: center; padding: 32px; }
.stat-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-bottom: 24px; }
.stat-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 12px; padding: 20px;
}
.stat-card .label { font-size: 12px; color: var(--text-muted); text-transform: uppercase; letter-spacing: .5px; margin-bottom: 6px; }
.stat-card .value { font-size: 28px; font-weight: 700; }
@media (max-width: 640px) { .stat-cards { grid-template-columns: 1fr; } .tab-nav { margin-left: 0; } }

/* --- Modal --- */
.modal-overlay {
  position: fixed; top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,.6); display: none; align-items: center;
  justify-content: center; z-index: 100;
}
.modal-overlay.show { display: flex; }
.modal {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 14px; padding: 28px; width: 100%; max-width: 400px;
}
.modal h3 { margin-bottom: 6px; }
.modal p { font-size: 13px; color: var(--text-muted); margin-bottom: 20px; }
.modal-actions { display: flex; gap: 10px; justify-content: flex-end; }

@media (max-width: 640px) {
  .key-grid { grid-template-columns: 1fr; }
  .topbar { padding: 12px 16px; flex-wrap: wrap; gap: 10px; }
  .main { padding: 16px; }
  .license-table { font-size: 13px; }
}