:root {
  --bg: #0f0f11;
  --bg2: #1a1a1f;
  --bg3: #25252b;
  --border: #333;
  --text: #e8e8ea;
  --text2: #999;
  --primary: #f59e0b;
  --primary-hover: #d97706;
  --success: #10b981;
  --danger: #ef4444;
  --warning: #f59e0b;
  --info: #3b82f6;
  --radius: 10px;
  --shadow: 0 4px 20px rgba(0,0,0,.3);
  --sidebar: 250px;
}
* { 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;
  line-height: 1.5;
}
a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-hover); }

/* Layout */
.app-layout { display: flex; min-height: 100vh; }

/* Sidebar */
.sidebar {
  width: var(--sidebar);
  background: var(--bg2);
  border-right: 1px solid var(--border);
  padding: 20px 0;
  position: fixed; top: 0; left: 0; bottom: 0;
  overflow-y: auto;
  z-index: 100;
}
.sidebar-logo {
  padding: 0 20px 20px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 12px;
}
.sidebar-logo h2 { font-size: 16px; color: var(--primary); }
.sidebar-logo small { font-size: 11px; color: var(--text2); }
.sidebar-nav { display: flex; flex-direction: column; gap: 2px; padding: 0 10px; }
.sidebar-nav a {
  display: flex; align-items: center; gap: 10px;
  padding: 11px 14px; border-radius: 8px;
  color: var(--text2); font-size: 14px; font-weight: 500;
  transition: all .15s;
}
.sidebar-nav a:hover { background: var(--bg3); color: var(--text); }
.sidebar-nav a.active { background: rgba(245,158,11,.12); color: var(--primary); font-weight: 600; }
.sidebar-nav a .icon { font-size: 18px; width: 22px; text-align: center; }
.sidebar-nav a .badge {
  margin-left: auto; background: var(--primary); color: #000;
  font-size: 11px; font-weight: 700; padding: 2px 8px; border-radius: 20px;
}

/* Main content */
.main-content { margin-left: var(--sidebar); flex: 1; padding: 24px 28px; min-height: 100vh; }
.page-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 24px; flex-wrap: wrap; gap: 12px; }
.page-header h1 { font-size: 22px; font-weight: 700; }
.page-header p { color: var(--text2); font-size: 13px; margin-top: 2px; }

/* Cards */
.card {
  background: var(--bg2); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 20px; box-shadow: var(--shadow);
}
.card-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; }
.card-header h3 { font-size: 15px; font-weight: 600; }

/* Stats Grid */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; margin-bottom: 24px; }
.stat-card {
  background: var(--bg2); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 20px; display: flex; align-items: flex-start; gap: 14px;
  transition: transform .15s, border-color .15s;
}
.stat-card:hover { transform: translateY(-2px); border-color: var(--primary); }
.stat-icon {
  width: 44px; height: 44px; border-radius: 10px;
  display: flex; align-items: center; justify-content: center; font-size: 20px;
  flex-shrink: 0;
}
.stat-icon.gold { background: rgba(245,158,11,.15); }
.stat-icon.green { background: rgba(16,185,129,.15); }
.stat-icon.blue { background: rgba(59,130,246,.15); }
.stat-icon.red { background: rgba(239,68,68,.15); }
.stat-icon.purple { background: rgba(139,92,246,.15); }
.stat-body h3 { font-size: 24px; font-weight: 700; line-height: 1.1; }
.stat-body p { font-size: 12px; color: var(--text2); margin-top: 2px; }
.stat-body .sub { font-size: 11px; color: var(--success); margin-top: 4px; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 9px 18px; border-radius: 8px; font-size: 13px; font-weight: 600;
  border: none; cursor: pointer; transition: all .15s;
  font-family: inherit;
}
.btn-primary { background: var(--primary); color: #000; }
.btn-primary:hover { background: var(--primary-hover); }
.btn-secondary { background: var(--bg3); color: var(--text); border: 1px solid var(--border); }
.btn-secondary:hover { background: #333; }
.btn-success { background: var(--success); color: #fff; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-sm { padding: 6px 12px; font-size: 12px; }
.btn:disabled { opacity: .5; cursor: not-allowed; }

/* Tables */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { padding: 11px 14px; text-align: left; border-bottom: 1px solid var(--border); }
th { color: var(--text2); font-weight: 600; font-size: 11px; text-transform: uppercase; letter-spacing: .5px; }
tr:hover td { background: rgba(255,255,255,.02); }

/* Status badges */
.status {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 3px 10px; border-radius: 20px; font-size: 11px; font-weight: 600;
}
.status::before { content: ''; width: 6px; height: 6px; border-radius: 50%; }
.status-pending { background: rgba(245,158,11,.12); color: #f59e0b; }
.status-pending::before { background: #f59e0b; }
.status-confirmed { background: rgba(59,130,246,.12); color: #60a5fa; }
.status-confirmed::before { background: #60a5fa; }
.status-shipped { background: rgba(139,92,246,.12); color: #a78bfa; }
.status-shipped::before { background: #a78bfa; }
.status-delivered { background: rgba(16,185,129,.12); color: #34d399; }
.status-delivered::before { background: #34d399; }
.status-cancelled { background: rgba(239,68,68,.12); color: #f87171; }
.status-cancelled::before { background: #f87171; }
.status-refunded { background: rgba(239,68,68,.12); color: #f87171; }
.status-refunded::before { background: #f87171; }

/* Forms */
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 12px; font-weight: 600; color: var(--text2); margin-bottom: 5px; }
.form-control {
  width: 100%; padding: 10px 14px; border-radius: 8px; border: 1px solid var(--border);
  background: var(--bg3); color: var(--text); font-size: 14px; font-family: inherit;
  transition: border-color .15s;
}
.form-control:focus { outline: none; border-color: var(--primary); }
select.form-control { cursor: pointer; }

/* Filters bar */
.filters-bar {
  display: flex; gap: 10px; align-items: center; flex-wrap: wrap;
  margin-bottom: 16px; padding: 14px 16px;
  background: var(--bg2); border: 1px solid var(--border); border-radius: var(--radius);
}
.filters-bar .form-control { width: auto; min-width: 140px; }
.filters-bar .form-control.search-input { flex: 1; min-width: 200px; }

/* Pagination */
.pagination {
  display: flex; align-items: center; justify-content: center; gap: 6px;
  margin-top: 20px; padding-top: 16px; border-top: 1px solid var(--border);
}
.pagination .btn { min-width: 36px; justify-content: center; }
.pagination .info { font-size: 12px; color: var(--text2); padding: 0 10px; }
.pagination .btn.active { background: var(--primary); color: #000; }

/* Login Page */
.login-page {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  background: var(--bg); padding: 20px;
}
.login-card {
  background: var(--bg2); border: 1px solid var(--border); border-radius: 14px;
  padding: 40px 36px; width: 100%; max-width: 400px; box-shadow: 0 20px 60px rgba(0,0,0,.4);
}
.login-card h1 { font-size: 22px; margin-bottom: 4px; }
.login-card p { color: var(--text2); font-size: 13px; margin-bottom: 28px; }
.login-card .logo-text { color: var(--primary); font-weight: 700; }

/* Alert / Error */
.alert {
  padding: 10px 14px; border-radius: 8px; font-size: 13px; margin-bottom: 12px;
  display: none;
}
.alert.show { display: block; }
.alert-error { background: rgba(239,68,68,.12); color: #f87171; border: 1px solid rgba(239,68,68,.25); }
.alert-success { background: rgba(16,185,129,.12); color: #34d399; border: 1px solid rgba(16,185,129,.25); }

/* Detail page */
.detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-bottom: 20px; }
.detail-field { margin-bottom: 14px; }
.detail-field label { display: block; font-size: 11px; color: var(--text2); text-transform: uppercase; letter-spacing: .5px; margin-bottom: 3px; }
.detail-field .value { font-size: 14px; font-weight: 500; }
.detail-actions { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-top: 16px; }

/* Loading */
.loading {
  display: flex; align-items: center; justify-content: center; padding: 40px;
  color: var(--text2); font-size: 14px; gap: 10px;
}
.spinner { width: 20px; height: 20px; border: 2px solid var(--border); border-top-color: var(--primary); border-radius: 50%; animation: spin .6s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* Empty state */
.empty-state { text-align: center; padding: 40px 20px; color: var(--text2); }
.empty-state .icon { font-size: 40px; margin-bottom: 12px; }
.empty-state h3 { font-size: 16px; color: var(--text); margin-bottom: 4px; }

/* Logout button */
.logout-btn {
  margin-top: auto; padding: 20px; border-top: 1px solid var(--border);
}
.logout-btn button {
  width: 100%; padding: 10px; border-radius: 8px;
  background: transparent; border: 1px solid var(--border);
  color: var(--danger); font-size: 13px; font-weight: 600; cursor: pointer;
  font-family: inherit; transition: all .15s;
}
.logout-btn button:hover { background: rgba(239,68,68,.1); border-color: var(--danger); }

/* Responsive */
@media (max-width: 768px) {
  .sidebar { width: 60px; padding: 12px 0; }
  .sidebar-logo { padding: 0 10px 14px; }
  .sidebar-logo h2, .sidebar-logo small, .sidebar-nav a span:not(.icon) { display: none; }
  .sidebar-nav { padding: 0 6px; }
  .sidebar-nav a { justify-content: center; padding: 11px; }
  .sidebar-nav a .badge { display: none; }
  .main-content { margin-left: 60px; padding: 16px; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .detail-grid { grid-template-columns: 1fr; }
  .filters-bar .form-control { min-width: 120px; }
  .filters-bar .form-control.search-input { min-width: 150px; }
}
@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr; }
  .page-header { flex-direction: column; align-items: flex-start; }
  .filters-bar { flex-direction: column; }
  .filters-bar .form-control { width: 100%; }
}

/* ===== Mobile Hamburger & Sidebar Overlay ===== */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 99;
  opacity: 0;
  transition: opacity .25s;
}
.sidebar-overlay.active {
  display: block;
  opacity: 1;
}

.menu-toggle {
  display: none;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 8px;
  width: 38px;
  height: 38px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text);
  font-size: 20px;
  transition: background .15s;
  flex-shrink: 0;
}
.menu-toggle:hover {
  background: #333;
}
.menu-toggle:active {
  transform: scale(0.95);
}

.page-header-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* APK Download Button in Sidebar */
.apk-download-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  margin: 8px 12px;
  background: linear-gradient(135deg, #1a1a2e, #16213e);
  border: 1px solid #0f3460;
  border-radius: 10px;
  color: #e8e8ea;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all .2s;
  text-decoration: none;
}
.apk-download-btn:hover {
  background: linear-gradient(135deg, #16213e, #0f3460);
  border-color: #e94560;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(233,69,96,0.2);
}
.apk-download-btn:active {
  transform: translateY(0);
}
.apk-download-btn .apk-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: linear-gradient(135deg, #e94560, #c23152);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
}
.apk-download-btn .apk-text {
  flex: 1;
}
.apk-download-btn .apk-text strong {
  display: block;
  font-size: 13px;
  color: #fff;
}
.apk-download-btn .apk-text small {
  display: block;
  font-size: 10px;
  color: #999;
  margin-top: 1px;
}

/* Mobile Sidebar as Drawer */
@media (max-width: 768px) {
  .menu-toggle {
    display: inline-flex;
  }
  
  .sidebar {
    position: fixed;
    left: -280px;
    top: 0;
    bottom: 0;
    width: 280px;
    z-index: 100;
    transition: left .3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 4px 0 20px rgba(0,0,0,0.5);
  }
  
  .sidebar.open {
    left: 0;
  }
  
  .main-content {
    margin-left: 0;
    padding: 16px;
  }
  
  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }
  
  .page-header {
    padding-top: 4px;
  }
  
  .page-header h1 {
    font-size: 18px;
  }
  
  .filters-bar {
    flex-direction: column;
    gap: 8px;
    padding: 12px;
  }
  
  .filters-bar .form-control {
    width: 100% !important;
    min-width: 0 !important;
  }
  
  .filters-bar .form-control.search-input {
    min-width: 0 !important;
  }
  
  /* Mobile tables */
  .table-wrap table {
    font-size: 12px;
  }
  
  .table-wrap th,
  .table-wrap td {
    padding: 8px 10px;
    white-space: nowrap;
  }
  
  .detail-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }
  
  .two-col {
    grid-template-columns: 1fr !important;
  }
}

@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: 1fr;
    gap: 10px;
  }
  
  .stat-card {
    padding: 14px;
  }
  
  .stat-body h3 {
    font-size: 20px;
  }
  
  .main-content {
    padding: 12px;
  }
  
  .card {
    padding: 14px;
  }
  
  .page-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
  
  .page-header h1 {
    font-size: 16px;
  }
  
  .table-wrap {
    margin: 0 -14px;
    padding: 0 14px;
    width: calc(100% + 28px);
  }
  
  .table-wrap table {
    font-size: 11px;
  }
  
  .table-wrap th,
  .table-wrap td {
    padding: 6px 8px;
  }
  
  .login-card {
    padding: 24px 20px;
  }
  
  .chart-container {
    height: 220px !important;
  }
  
  .analytics-grid {
    grid-template-columns: 1fr !important;
    gap: 10px !important;
  }
  
  .settings-card {
    padding: 16px !important;
  }
  
  .detail-field .value {
    font-size: 13px;
  }
  
  .pagination {
    flex-wrap: wrap;
    gap: 4px;
  }
  
  .pagination .btn {
    min-width: 32px;
    font-size: 11px;
    padding: 5px 8px;
  }
  
  .pagination .info {
    font-size: 11px;
  }
  
  .mode-selector {
    flex-direction: column;
    gap: 6px;
  }
  
  .mode-btn {
    width: 100%;
    text-align: center;
  }
  
  .save-bar {
    flex-direction: column;
    gap: 8px;
  }
  
  .save-bar .btn {
    width: 100%;
    justify-content: center;
  }
  
  .seo-grid {
    grid-template-columns: 1fr !important;
  }
  
  .setting-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
}

/* Touch-friendly improvements */
@media (hover: none) and (pointer: coarse) {
  .btn, 
  .sidebar-nav a,
  .stat-card,
  .menu-toggle,
  .apk-download-btn,
  .form-control,
  select.form-control {
    cursor: default;
    -webkit-tap-highlight-color: transparent;
  }
  
  .sidebar-nav a {
    padding: 12px 14px;
  }
  
  .btn-sm {
    padding: 8px 14px;
  }
  
  .stat-card:hover {
    transform: none;
  }
}