/* Modern Admin Panel - Mobile First */
* { margin:0; padding:0; box-sizing:border-box; }

:root {
  --bg: #0f172a;
  --surface: #1e293b;
  --surface-2: #334155;
  --border: #475569;
  --text: #f1f5f9;
  --text-dim: #94a3b8;
  --primary: #6366f1;
  --primary-hover: #4f46e5;
  --success: #22c55e;
  --danger: #ef4444;
  --shadow: 0 4px 6px -1px rgba(0,0,0,.3);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,.3);
  --radius: 12px;
  --radius-sm: 8px;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
}

/* ===== LOGIN ===== */
.login-box {
  max-width: 420px;
  margin: 12vh auto;
  background: var(--surface);
  padding: 40px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border);
}
.login-box h1 {
  font-size: 24px;
  margin-bottom: 24px;
  text-align: center;
  font-weight: 700;
  color: var(--primary);
}
.login-box input {
  width: 100%;
  padding: 14px;
  margin: 8px 0;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: var(--radius-sm);
  font-size: 15px;
  transition: border-color .2s, box-shadow .2s;
}
.login-box input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(99,102,241,.2);
}
.login-box button {
  width: 100%;
  padding: 14px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-hover) 100%);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  margin-top: 16px;
  transition: transform .1s, box-shadow .2s;
}
.login-box button:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

/* ===== LAYOUT ===== */
.layout { display: flex; min-height: 100vh; }

/* ===== SIDEBAR ===== */
.sidebar {
  width: 260px;
  background: var(--surface);
  padding: 24px 16px;
  border-right: 1px solid var(--border);
  position: fixed;
  left: 0; top: 0; bottom: 0;
  overflow-y: auto;
  z-index: 40;
  transition: transform .3s ease;
}
.sidebar h2 {
  font-size: 20px;
  margin-bottom: 32px;
  padding: 0 12px;
  font-weight: 700;
  color: var(--primary);
}
.sidebar a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  color: var(--text-dim);
  text-decoration: none;
  border-radius: var(--radius-sm);
  margin-bottom: 4px;
  cursor: pointer;
  transition: all .2s;
  font-size: 15px;
  font-weight: 500;
}
.sidebar a:hover {
  background: var(--surface-2);
  color: var(--text);
  transform: translateX(4px);
}
.sidebar a.active {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-hover) 100%);
  color: #fff;
  box-shadow: var(--shadow);
}

/* ===== MAIN ===== */
.main {
  flex: 1;
  margin-left: 260px;
  padding: 32px;
  overflow-x: auto;
}

/* ===== TOPBAR ===== */
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 28px;
  flex-wrap: wrap;
  gap: 16px;
}
.topbar h3 { font-size: 24px; font-weight: 700; margin: 0; }

/* ===== CARDS ===== */
.card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 24px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

/* ===== STATS ===== */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  margin-bottom: 28px;
}
.stat {
  background: linear-gradient(135deg, var(--surface) 0%, var(--surface-2) 100%);
  border-radius: var(--radius);
  padding: 24px;
  border: 1px solid var(--border);
  transition: transform .2s, box-shadow .2s;
  position: relative;
  overflow: hidden;
}
.stat:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.stat::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--primary-hover));
}
.stat .num { font-size: 32px; font-weight: 700; margin-bottom: 8px; }
.stat .lbl {
  color: var(--text-dim);
  font-size: 14px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: .5px;
}

/* ===== TABLES ===== */
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td {
  padding: 14px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
th {
  color: var(--text-dim);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 12px;
  letter-spacing: .5px;
  background: var(--surface-2);
}
tbody tr { transition: background .2s; }
tbody tr:hover { background: var(--surface-2); }

/* ===== BUTTONS ===== */
button {
  padding: 10px 20px;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  transition: all .2s;
  box-shadow: var(--shadow);
}
button:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}
button.danger {
  background: linear-gradient(135deg, var(--danger) 0%, #dc2626 100%);
}
button.danger:hover { background: #b91c1c; }
button.success {
  background: linear-gradient(135deg, var(--success) 0%, #16a34a 100%);
}
button.success:hover { background: #15803d; }
button.sm { padding: 6px 12px; font-size: 13px; }

/* ===== INPUTS ===== */
input, textarea, select {
  width: 100%;
  padding: 12px 14px;
  margin: 6px 0;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-family: inherit;
  transition: border-color .2s, box-shadow .2s;
}
input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(99,102,241,.2);
}
label {
  display: block;
  margin-top: 12px;
  margin-bottom: 6px;
  font-weight: 500;
  font-size: 14px;
  color: var(--text);
}

/* ===== MODALS ===== */
.modal {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.7);
  z-index: 50;
  align-items: center;
  justify-content: center;
  padding: 20px;
  backdrop-filter: blur(4px);
}
.modal.open { display: flex; animation: fadeIn .2s ease; }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
.modal-box {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 32px;
  width: 100%;
  max-width: 560px;
  max-height: 85vh;
  overflow-y: auto;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  animation: slideUp .3s ease;
}
@keyframes slideUp {
  from { transform: translateY(20px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}
.modal-box h3 { margin-bottom: 20px; font-size: 20px; font-weight: 700; }

/* ===== BADGES ===== */
.badge {
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  display: inline-block;
}
.badge.green {
  background: rgba(34,197,94,.15);
  color: var(--success);
  border: 1px solid var(--success);
}
.badge.red {
  background: rgba(239,68,68,.15);
  color: var(--danger);
  border: 1px solid var(--danger);
}

/* ===== UTILITIES ===== */
.row { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.mono { font-family: monospace; font-size: 12px; word-break: break-all; }
.page { display: none; animation: fadeIn .3s ease; }
.page.active { display: block; }
h3.sec { margin: 0 0 20px; font-size: 20px; font-weight: 700; }

/* ===== FILTER BAR ===== */
.filter-bar {
  display: flex;
  gap: 16px;
  align-items: center;
  flex-wrap: wrap;
  padding: 16px 0;
}
.filter-bar select, .filter-bar input { width: auto; min-width: 200px; }

/* ===== MOBILE MENU BUTTON ===== */
.mobile-menu-btn {
  display: none;
  position: fixed;
  top: 20px;
  left: 20px;
  z-index: 50;
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 20px;
  cursor: pointer;
  box-shadow: var(--shadow-lg);
  color: var(--text);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .mobile-menu-btn { display: block; }
  .sidebar { transform: translateX(-100%); width: 280px; }
  .sidebar.open { transform: translateX(0); box-shadow: var(--shadow-lg); }
  .main { margin-left: 0; padding: 20px; padding-top: 70px; }
  .stats { grid-template-columns: 1fr; }
  .topbar { flex-direction: column; align-items: stretch; }
  .topbar button { width: 100%; }
  .modal-box { padding: 24px; margin: 0; }
  table { font-size: 13px; }
  th, td { padding: 10px 8px; }
  .row { flex-direction: column; align-items: stretch; }
  .row button { width: 100%; }
}

@media (max-width: 480px) {
  .login-box { margin: 8vh 16px; padding: 24px; }
  .main { padding: 16px; padding-top: 70px; }
  .stat .num { font-size: 24px; }
  .modal-box { padding: 20px; }
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--surface-2); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--border); }

/* ===== STORE MANAGER LIGHT THEME ===== */
.store-admin-shell {
  background: #f8fafc;
  color: #1e293b;
  border-radius: var(--radius);
  padding: 32px;
  min-height: 75vh;
  box-shadow: var(--shadow);
}
.store-admin-head, .store-card-head { display: flex; justify-content: space-between; gap: 16px; align-items: center; }
.store-admin-head {
  padding-bottom: 20px;
  border-bottom: 2px solid #e2e8f0;
  margin-bottom: 24px;
}
.store-admin-head h1 { font-size: 28px; font-weight: 700; color: #1e293b; }
.store-admin-head p { color: #64748b; font-size: 14px; margin-top: 4px; }
.store-tabs { display: flex; gap: 12px; padding: 0 0 24px 0; flex-wrap: wrap; }
.store-tab {
  background: #e2e8f0;
  color: #475569;
  font-weight: 600;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  border: 1px solid #cbd5e1;
  transition: all .2s;
  cursor: pointer;
}
.store-tab:hover, .store-tab.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}
.store-tab-panel { display: none; }
.store-tab-panel.active { display: block; animation: fadeIn .3s ease; }
.store-grid.two, .store-form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}
.store-form-grid.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.store-form-grid.four { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.paper-card, .variant-box {
  background: white;
  border: 1px solid #e2e8f0;
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 20px;
  box-shadow: var(--shadow);
}
.store-admin-shell input, .store-admin-shell textarea, .store-admin-shell select {
  background: white;
  color: #1e293b;
  border: 1px solid #cbd5e1;
  border-radius: var(--radius-sm);
  padding: 12px;
  width: 100%;
}
.store-admin-shell input:focus, .store-admin-shell textarea:focus, .store-admin-shell select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(99,102,241,.1);
  outline: none;
}
.store-admin-shell label {
  display: block;
  font-weight: 600;
  margin-top: 12px;
  color: #1e293b;
  font-size: 14px;
}
.store-admin-shell button {
  border-radius: var(--radius-sm);
  background: var(--primary);
  font-weight: 600;
  color: #fff;
}
.branding-box {
  background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
  border: 1px solid #f59e0b;
  border-radius: var(--radius);
  padding: 20px;
  margin: 20px 0;
}
.stock-list { max-height: 430px; overflow-y: auto; margin-top: 16px; border: 1px solid #e2e8f0; border-radius: var(--radius-sm); }
.stock-product-row {
  display: flex;
  width: 100%;
  justify-content: space-between;
  background: white;
  color: #1e293b;
  border-bottom: 1px solid #e2e8f0;
  padding: 12px 16px;
  text-align: left;
  transition: background .2s;
  cursor: pointer;
}
.stock-product-row:hover { background: #f1f5f9; }
.stock-product-row b.zero { color: var(--danger); }
.stock-items-list { max-height: 180px; overflow-y: auto; margin-top: 12px; }
.stock-items-list > div, .variant-bonus {
  display: flex;
  gap: 12px;
  align-items: center;
  padding: 8px 0;
  border-bottom: 1px solid #e2e8f0;
}
.stock-items-list span { flex: 1; word-break: break-all; font-family: monospace; font-size: 13px; }
.variant-row { border: 1px solid #e2e8f0; border-radius: var(--radius-sm); padding: 16px; margin-top: 16px; background: #f8fafc; }
.variant-bonus input { flex: 1; }
.store-actions {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 16px;
  margin-top: 20px;
}
.store-actions button { font-size: 14px; padding: 12px; }
.store-card-head h3 { margin: 0; color: #1e293b; }

@media (max-width: 768px) {
  .store-grid.two, .store-form-grid, .store-form-grid.three, .store-form-grid.four {
    grid-template-columns: 1fr;
  }
  .store-tabs { overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .store-tab { white-space: nowrap; }
  .store-admin-shell { padding: 20px; }
}