/* ============================================================
   TokenRelay — Dark Theme UI
   ============================================================ */

/* Variables */
:root {
  --bg-body: #0d1117;
  --bg-card: #161b22;
  --bg-elevated: #1c2333;
  --bg-input: #0d1117;
  --bg-hover: rgba(255, 255, 255, 0.03);
  --accent: #e94560;
  --accent-hover: #d63850;
  --accent-glow: rgba(233, 69, 96, 0.15);
  --accent-subtle: rgba(233, 69, 96, 0.08);
  --text-primary: #e6edf3;
  --text-secondary: #8b949e;
  --text-muted: #484f58;
  --border: #21262d;
  --border-light: #30363d;
  --success: #3fb950;
  --success-bg: rgba(63, 185, 80, 0.1);
  --warning: #d29922;
  --warning-bg: rgba(210, 153, 34, 0.1);
  --danger: #f85149;
  --danger-bg: rgba(248, 81, 73, 0.1);
  --info: #58a6ff;
  --info-bg: rgba(88, 166, 255, 0.1);
  --radius: 12px;
  --radius-sm: 8px;
  --radius-xs: 6px;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.3), 0 1px 2px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.4);
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans', Helvetica, Arial, sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', 'Cascadia Code', Consolas, monospace;
  --nav-height: 60px;
  --transition: all 0.2s ease;
}

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

html, body {
  height: 100%;
  font-family: var(--font);
  background: var(--bg-body);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* Scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--border-light); }

/* ==============================
   Navbar
   ============================== */

#navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
  padding: 0 20px;
  background: rgba(13, 17, 23, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  transition: transform 0.3s ease;
}
#navbar.hidden { display: none; }

.nav-left {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.menu-btn {
  display: none;
  background: none;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  width: 36px;
  height: 36px;
  border-radius: var(--radius-xs);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  transition: var(--transition);
}
.menu-btn:hover { color: var(--text-primary); border-color: var(--border-light); }

.nav-brand {
  font-size: 18px;
  font-weight: 700;
  color: var(--accent);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
  letter-spacing: -0.3px;
  white-space: nowrap;
}
.nav-brand i { font-size: 16px; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 2px;
  flex: 1;
  justify-content: center;
  padding: 0 12px;
}
.nav-links a {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--text-secondary);
  text-decoration: none;
  padding: 8px 14px;
  border-radius: var(--radius-xs);
  font-size: 14px;
  font-weight: 500;
  transition: var(--transition);
  white-space: nowrap;
}
.nav-links a:hover { color: var(--text-primary); background: var(--bg-hover); }
.nav-links a.active { color: var(--accent); background: var(--accent-subtle); }
.nav-links a i { font-size: 14px; width: 16px; text-align: center; }

/* Dropdown */
.nav-dropdown { position: relative; display: inline-block; }
.nav-dropdown > span {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--text-secondary);
  padding: 8px 14px;
  border-radius: var(--radius-xs);
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  transition: var(--transition);
}
.nav-dropdown > span:hover { color: var(--text-primary); background: var(--bg-hover); }
.nav-dropdown .dropdown-content {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  min-width: 180px;
  box-shadow: var(--shadow-lg);
  z-index: 200;
  padding: 4px;
  overflow: hidden;
}
.nav-dropdown .dropdown-content a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: 4px;
  color: var(--text-secondary);
  font-size: 13px;
}
.nav-dropdown .dropdown-content a:hover {
  color: var(--text-primary);
  background: var(--bg-hover);
}
.nav-dropdown:hover .dropdown-content { display: block; }
.nav-dropdown .dropdown-content a i { width: 16px; font-size: 13px; }

/* Nav user */
.nav-user {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.nav-email {
  font-size: 13px;
  color: var(--text-secondary);
  max-width: 180px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--accent-subtle);
  border: 2px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  font-size: 14px;
  cursor: pointer;
  transition: var(--transition);
}
.user-avatar:hover { border-color: var(--accent); color: var(--accent); }

#logout-btn {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-muted);
  width: 34px;
  height: 34px;
  border-radius: var(--radius-xs);
  cursor: pointer;
  font-size: 14px;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}
#logout-btn:hover { border-color: var(--danger); color: var(--danger); }

/* ==============================
   Main content
   ============================== */

main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 28px 24px;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ==============================
   Page header
   ============================== */

.page-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  gap: 12px;
}
.page-header h2 {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.3px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.page-header h2 i { color: var(--accent); font-size: 20px; }
.page-header .subtitle { font-size: 14px; color: var(--text-secondary); font-weight: 400; }

/* ==============================
   Cards
   ============================== */

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  margin-bottom: 20px;
  transition: var(--transition);
}
.card:hover { border-color: var(--border-light); }
.card-title {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}
.card-title i { color: var(--accent); font-size: 14px; }

/* ==============================
   Stat cards grid
   ============================== */

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}
.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.stat-card:hover { border-color: var(--border-light); }
.stat-card .stat-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  margin-bottom: 14px;
}
.stat-card .stat-label {
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 500;
  margin-bottom: 4px;
}
.stat-card .stat-value {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.5px;
}
.stat-card .stat-change {
  font-size: 12px;
  margin-top: 6px;
  display: flex;
  align-items: center;
  gap: 4px;
}
.stat-card .stat-change.up { color: var(--success); }
.stat-card .stat-change.down { color: var(--danger); }

/* Icon backgrounds */
.icon-balance { background: rgba(233, 69, 96, 0.12); color: var(--accent); }
.icon-usage { background: var(--warning-bg); color: var(--warning); }
.icon-model { background: var(--info-bg); color: var(--info); }
.icon-key { background: var(--success-bg); color: var(--success); }
.icon-users { background: var(--info-bg); color: var(--info); }
.icon-upstream { background: var(--success-bg); color: var(--success); }
.icon-revenue { background: var(--warning-bg); color: var(--warning); }

/* ==============================
   Balance display (big)
   ============================== */

.balance-display {
  text-align: center;
  padding: 8px 0;
}
.balance-display .balance-label {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 4px;
}
.balance-display .balance-amount {
  font-size: 48px;
  font-weight: 700;
  letter-spacing: -2px;
  color: var(--text-primary);
}
.balance-display .balance-amount .currency {
  font-size: 28px;
  color: var(--text-secondary);
  font-weight: 400;
}
.balance-display .balance-sub {
  margin-top: 12px;
  display: flex;
  gap: 24px;
  justify-content: center;
  font-size: 14px;
}
.balance-display .balance-sub span { color: var(--text-secondary); }
.balance-display .balance-sub .num { color: var(--text-primary); font-weight: 600; }

/* ==============================
   Mini chart (CSS bars)
   ============================== */

.chart-bars {
  display: flex;
  align-items: flex-end;
  gap: 6px;
  height: 60px;
  padding: 8px 0;
}
.chart-bars .bar {
  flex: 1;
  background: var(--accent-subtle);
  border-radius: 3px 3px 0 0;
  min-height: 4px;
  transition: var(--transition);
  position: relative;
}
.chart-bars .bar:hover { background: var(--accent-glow); }
.chart-bars .bar.fill { background: var(--accent); }

/* ==============================
   Quick actions
   ============================== */

.quick-actions {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 10px;
}
.quick-action {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 16px 12px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  color: var(--text-primary);
}
.quick-action:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}
.quick-action i {
  font-size: 22px;
  color: var(--accent);
}
.quick-action .qa-label {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
}

/* ==============================
   Tables
   ============================== */

.table-container {
  overflow-x: auto;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
thead th {
  text-align: left;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  background: var(--bg-elevated);
  white-space: nowrap;
}
tbody td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  color: var(--text-primary);
}
tr:last-child td { border-bottom: none; }
tbody tr {
  transition: background 0.15s ease;
}
tbody tr:hover td { background: var(--bg-hover); }
table code {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-secondary);
}

/* ==============================
   Badges
   ============================== */

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
}
.badge-success { background: var(--success-bg); color: var(--success); }
.badge-danger { background: var(--danger-bg); color: var(--danger); }
.badge-warning { background: var(--warning-bg); color: var(--warning); }
.badge-info { background: var(--info-bg); color: var(--info); }
.badge-admin { background: var(--accent-subtle); color: var(--accent); }
.badge-reseller { background: var(--warning-bg); color: var(--warning); }

/* ==============================
   Forms
   ============================== */

.form-group {
  margin-bottom: 16px;
}
.form-group label {
  display: block;
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 6px;
  font-weight: 500;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 10px 14px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  color: var(--text-primary);
  font-size: 14px;
  outline: none;
  transition: var(--transition);
  font-family: var(--font);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}
.form-group input::placeholder { color: var(--text-muted); }
.form-group select { cursor: pointer; }
.form-group .hint {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ==============================
   Buttons
   ============================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 20px;
  border: none;
  border-radius: var(--radius-xs);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font);
  text-decoration: none;
  line-height: 1;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover { background: var(--accent-hover); }
.btn-primary:disabled { opacity: 0.4; cursor: not-allowed; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #d93a35; }
.btn-danger:disabled { opacity: 0.4; cursor: not-allowed; }
.btn-secondary {
  background: var(--bg-elevated);
  color: var(--text-primary);
  border: 1px solid var(--border);
}
.btn-secondary:hover { background: rgba(255,255,255,0.06); border-color: var(--border-light); }
.btn-sm { padding: 7px 14px; font-size: 12px; }
.btn i { font-size: 13px; }

/* ==============================
   Auth pages
   ============================== */

.auth-page {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: calc(100vh - var(--nav-height) - 56px);
  padding: 20px;
}
.auth-card {
  width: 100%;
  max-width: 420px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 32px;
  box-shadow: var(--shadow-lg);
}
.auth-card .auth-logo {
  text-align: center;
  margin-bottom: 8px;
  font-size: 32px;
  color: var(--accent);
}
.auth-card h2 {
  text-align: center;
  margin-bottom: 4px;
  font-size: 22px;
}
.auth-card .auth-subtitle {
  text-align: center;
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 28px;
}
.auth-card .auth-toggle {
  text-align: center;
  margin-top: 20px;
  font-size: 13px;
  color: var(--text-secondary);
}
.auth-card .auth-toggle a {
  color: var(--accent);
  text-decoration: none;
  cursor: pointer;
  font-weight: 500;
}
.auth-card .auth-toggle a:hover { text-decoration: underline; }
.auth-card .error-msg {
  background: var(--danger-bg);
  color: var(--danger);
  padding: 10px 14px;
  border-radius: var(--radius-xs);
  font-size: 13px;
  margin-bottom: 16px;
  display: none;
  border: 1px solid rgba(248, 81, 73, 0.2);
}

/* ==============================
   Modal
   ============================== */

.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  animation: fadeIn 0.2s ease;
}
.modal-overlay.hidden { display: none; }
.modal-content {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  width: 90%;
  max-width: 480px;
  box-shadow: var(--shadow-lg);
  animation: scaleIn 0.2s ease;
}
@keyframes scaleIn {
  from { transform: scale(0.95); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}
.modal-content h3 {
  margin-bottom: 20px;
  font-size: 18px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.modal-content h3 i { color: var(--accent); }
.modal-actions {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
  margin-top: 24px;
}

/* Top-up card grid (in modal too) */
.topup-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}
.topup-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 20px 16px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
}
.topup-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}
.topup-card .amount {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 4px;
}
.topup-card .bonus {
  font-size: 12px;
  color: var(--success);
  font-weight: 600;
  margin-bottom: 4px;
}
.topup-card .sub {
  font-size: 11px;
  color: var(--text-muted);
}

/* ==============================
   Toast
   ============================== */

.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}
.toast {
  padding: 12px 20px;
  border-radius: var(--radius-xs);
  font-size: 14px;
  font-weight: 500;
  box-shadow: var(--shadow-lg);
  animation: toastIn 0.3s ease;
  max-width: 380px;
  pointer-events: auto;
  display: flex;
  align-items: center;
  gap: 8px;
}
.toast i { font-size: 16px; }
.toast-success { background: #1a3a2a; color: var(--success); border: 1px solid rgba(63, 185, 80, 0.2); }
.toast-error { background: #3a1a1a; color: var(--danger); border: 1px solid rgba(248, 81, 73, 0.2); }
.toast-info { background: #1a283a; color: var(--info); border: 1px solid rgba(88, 166, 255, 0.2); }
@keyframes toastIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* ==============================
   Loading spinner
   ============================== */

.spinner {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 60px 0;
}
.spinner::after {
  content: '';
  width: 32px;
  height: 32px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}
@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Skeleton loading */
.skeleton {
  background: linear-gradient(90deg, var(--bg-elevated) 25%, var(--bg-hover) 50%, var(--bg-elevated) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s ease-in-out infinite;
  border-radius: 4px;
}
@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ==============================
   Key display
   ============================== */

.key-display {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  padding: 12px 16px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-primary);
  word-break: break-all;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.key-display .copy-btn {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  padding: 5px 12px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 12px;
  white-space: nowrap;
  transition: var(--transition);
  font-family: var(--font);
  font-weight: 500;
}
.key-display .copy-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* ==============================
   Pagination
   ============================== */

.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 16px;
}
.pagination button {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  color: var(--text-primary);
  padding: 7px 16px;
  border-radius: var(--radius-xs);
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  transition: var(--transition);
  font-family: var(--font);
}
.pagination button:disabled { opacity: 0.3; cursor: not-allowed; }
.pagination button:hover:not(:disabled) { border-color: var(--accent); color: var(--accent); }
.pagination .page-info { font-size: 13px; color: var(--text-secondary); }

/* ==============================
   Empty state
   ============================== */

.empty-state {
  text-align: center;
  padding: 48px 20px;
  color: var(--text-muted);
}
.empty-state i {
  font-size: 36px;
  margin-bottom: 12px;
  opacity: 0.5;
}
.empty-state p { font-size: 14px; }

/* ==============================
   Code block (guide page)
   ============================== */

.code-block {
  background: #0d1117;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.7;
  overflow-x: auto;
  white-space: pre;
  color: var(--text-primary);
  position: relative;
}
.code-block .copy-code {
  position: absolute;
  top: 8px;
  right: 8px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  padding: 4px 10px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 11px;
  transition: var(--transition);
  font-family: var(--font);
}
.code-block .copy-code:hover { border-color: var(--accent); color: var(--accent); }

/* ==============================
   Pricing table (guide)
   ============================== */

.pricing-group {
  margin-bottom: 16px;
}
.pricing-group .group-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 8px;
  padding: 0 4px;
}

/* ==============================
   Admin topup grid (3 cols)
   ============================== */

.admin-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

/* ==============================
   Responsive
   ============================== */

@media (max-width: 900px) {
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
  .admin-grid-3 { grid-template-columns: repeat(2, 1fr); }
  .balance-display .balance-amount { font-size: 36px; }
}

@media (max-width: 768px) {
  .menu-btn { display: flex; }

  .nav-links {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    width: 260px;
    height: calc(100vh - var(--nav-height));
    background: var(--bg-card);
    border-right: 1px solid var(--border);
    flex-direction: column;
    align-items: stretch;
    padding: 8px;
    gap: 2px;
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    z-index: 90;
    overflow-y: auto;
  }
  .nav-links.open { transform: translateX(0); }
  .nav-links a, .nav-dropdown > span {
    padding: 12px 14px;
    border-radius: var(--radius-xs);
  }
  .nav-dropdown .dropdown-content {
    position: static;
    box-shadow: none;
    border: none;
    padding-left: 12px;
  }
  .nav-email { display: none; }
  main { padding: 16px; }
  .stat-grid { grid-template-columns: 1fr; }
  .admin-grid-3 { grid-template-columns: 1fr; }
  .quick-actions { grid-template-columns: repeat(2, 1fr); }
  .topup-grid { grid-template-columns: repeat(2, 1fr); }
  .page-header { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 480px) {
  .balance-display .balance-amount { font-size: 28px; }
  .quick-actions { grid-template-columns: 1fr; }
  .topup-grid { grid-template-columns: 1fr; }
  .nav-brand span { display: none; }
}