/* ============================================================
   QFE POS — Design System
   Shopify-inspired minimal admin interface
   ============================================================ */

:root {
  /* Colors — overridable per-tenant via Settings (theme_primary_color) */
  --color-canvas: #ffffff;
  --color-surface: #f6f6f7;
  --color-surface-hover: #f1f2f3;
  --color-border: #e1e3e5;
  --color-border-strong: #c9cccf;
  --color-primary: #008060;
  --color-primary-hover: #006e52;
  --color-primary-surface: #e3f1ee;
  --color-text: #1a1a1a;
  --color-text-secondary: #6d7175;
  --color-text-disabled: #a7acb1;
  --color-danger: #d82c0d;
  --color-danger-surface: #fbeae9;
  --color-warning: #ffc453;
  --color-warning-surface: #fff5e5;
  --color-success: #008060;
  --color-success-surface: #e3f1ee;
  --color-info: #2c6ecb;
  --color-info-surface: #e4eefc;

  /* Spacing scale */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;

  /* Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

  /* Shadow — used sparingly, Shopify relies on borders more than shadow */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-popover: 0 8px 24px rgba(0, 0, 0, 0.12);

  --sidebar-width: 240px;
  --topbar-height: 56px;

  --font-ui: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--font-ui);
  background: var(--color-surface);
  color: var(--color-text);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 { margin: 0; font-weight: 600; letter-spacing: -0.01em; }
h1 { font-size: 20px; }
h2 { font-size: 17px; }
h3 { font-size: 15px; }
p { margin: 0; }

a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Tabular numbers for anything money/quantity related */
.num, td.num, .money, .qty {
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum";
}

/* ============================================================
   LAYOUT
   ============================================================ */

.app-shell {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: var(--sidebar-width);
  background: var(--color-canvas);
  border-right: 1px solid var(--color-border);
  position: fixed;
  top: 0; left: 0; bottom: 0;
  display: flex;
  flex-direction: column;
  z-index: 20;
}

.sidebar-brand {
  height: var(--topbar-height);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0 var(--space-4);
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}

.sidebar-brand img {
  height: 28px;
  width: 28px;
  object-fit: contain;
  border-radius: var(--radius-sm);
}

.sidebar-brand-name {
  font-weight: 700;
  font-size: 14px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar-nav {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-3) var(--space-2);
}

.sidebar-section-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-disabled);
  padding: var(--space-4) var(--space-3) var(--space-1);
}

.sidebar-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-size: 13.5px;
  font-weight: 500;
  margin-bottom: 1px;
}

.sidebar-link:hover {
  background: var(--color-surface);
  text-decoration: none;
}

.sidebar-link.active {
  background: var(--color-primary-surface);
  color: var(--color-primary);
}

.sidebar-link svg { flex-shrink: 0; width: 18px; height: 18px; }

.sidebar-footer {
  padding: var(--space-3);
  border-top: 1px solid var(--color-border);
  flex-shrink: 0;
}

.main-area {
  flex: 1;
  margin-left: var(--sidebar-width);
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.topbar {
  height: var(--topbar-height);
  background: var(--color-canvas);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-5);
  position: sticky;
  top: 0;
  z-index: 10;
}

.topbar-title { font-size: 15px; font-weight: 600; }

.topbar-user {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: 13px;
}

.user-avatar {
  width: 30px; height: 30px;
  border-radius: 50%;
  background: var(--color-primary);
  color: white;
  display: flex; align-items: center; justify-content: center;
  font-weight: 600; font-size: 12px;
}

.role-badge {
  font-size: 11px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 100px;
  background: var(--color-surface);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
}

.page-content {
  padding: var(--space-6);
  max-width: 1400px;
  width: 100%;
}

.page-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: var(--space-6);
  gap: var(--space-4);
  flex-wrap: wrap;
}

.page-header-text p {
  color: var(--color-text-secondary);
  margin-top: var(--space-1);
  font-size: 13.5px;
}

.page-actions { display: flex; gap: var(--space-2); flex-shrink: 0; }

/* ============================================================
   CARDS
   ============================================================ */

.card {
  background: var(--color-canvas);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-5);
}

.card-header {
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-body { padding: var(--space-5); }
.card-body.no-pad { padding: 0; }

.card-footer {
  padding: var(--space-3) var(--space-5);
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

/* Stat cards — subtle colored left border, the one "signature" accent */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.stat-card {
  background: var(--color-canvas);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-primary);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-5);
}

.stat-card.danger { border-left-color: var(--color-danger); }
.stat-card.warning { border-left-color: var(--color-warning); }
.stat-card.info { border-left-color: var(--color-info); }

.stat-label {
  font-size: 12.5px;
  color: var(--color-text-secondary);
  font-weight: 500;
  margin-bottom: var(--space-1);
}

.stat-value {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.stat-sub {
  font-size: 12px;
  color: var(--color-text-secondary);
  margin-top: var(--space-1);
}

/* ============================================================
   BUTTONS
   ============================================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 8px 14px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-strong);
  background: var(--color-canvas);
  color: var(--color-text);
  font-size: 13.5px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.1s ease, border-color 0.1s ease;
  font-family: inherit;
}

.btn:hover { background: var(--color-surface); text-decoration: none; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-primary {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
}
.btn-primary:hover { background: var(--color-primary-hover); border-color: var(--color-primary-hover); color: white; }

.btn-danger { background: var(--color-danger); border-color: var(--color-danger); color: white; }
.btn-danger:hover { background: #b8250b; border-color: #b8250b; color: white; }

.btn-sm { padding: 5px 10px; font-size: 12.5px; }
.btn-lg { padding: 11px 20px; font-size: 14.5px; }
.btn-icon { padding: 8px; }
.btn-block { width: 100%; }

.btn svg { width: 16px; height: 16px; }

/* ============================================================
   FORMS
   ============================================================ */

.form-group { margin-bottom: var(--space-4); }

label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: var(--space-1);
  color: var(--color-text);
}

label .optional {
  font-weight: 400;
  color: var(--color-text-secondary);
  text-transform: none;
}

.form-hint {
  font-size: 12px;
  color: var(--color-text-secondary);
  margin-top: var(--space-1);
}

input[type="text"], input[type="password"], input[type="number"],
input[type="email"], input[type="tel"], input[type="date"],
input[type="datetime-local"], input[type="search"], input[type="file"],
select, textarea {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  font-size: 13.5px;
  font-family: inherit;
  color: var(--color-text);
  background: var(--color-canvas);
  transition: border-color 0.1s ease, box-shadow 0.1s ease;
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-surface);
}

.form-row { display: grid; gap: var(--space-4); grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }
.form-row-2 { display: grid; gap: var(--space-4); grid-template-columns: 1fr 1fr; }
.form-row-3 { display: grid; gap: var(--space-4); grid-template-columns: 1fr 1fr 1fr; }

.input-group { display: flex; }
.input-group input { border-radius: var(--radius-md) 0 0 var(--radius-md); }
.input-group-addon {
  padding: 8px 12px;
  background: var(--color-surface);
  border: 1px solid var(--color-border-strong);
  border-left: none;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  color: var(--color-text-secondary);
  font-size: 13.5px;
  display: flex; align-items: center;
}

/* ============================================================
   TABLES
   ============================================================ */

.table-wrap { overflow-x: auto; }

table { width: 100%; border-collapse: collapse; font-size: 13.5px; }

thead th {
  text-align: left;
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface);
  color: var(--color-text-secondary);
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  border-bottom: 1px solid var(--color-border);
  white-space: nowrap;
}

tbody td {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-border);
  vertical-align: middle;
}

tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: var(--color-surface); }
tbody tr.clickable { cursor: pointer; }

td.num, th.num { text-align: right; }

/* ============================================================
   STATUS PILLS
   ============================================================ */

.pill {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 10px;
  border-radius: 100px;
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
}

.pill::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: currentColor;
}

.pill-success { background: var(--color-success-surface); color: var(--color-success); }
.pill-danger { background: var(--color-danger-surface); color: var(--color-danger); }
.pill-warning { background: var(--color-warning-surface); color: #92610a; }
.pill-info { background: var(--color-info-surface); color: var(--color-info); }
.pill-neutral { background: var(--color-surface); color: var(--color-text-secondary); }

/* ============================================================
   ALERTS / FLASH MESSAGES
   ============================================================ */

.alert {
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  font-size: 13.5px;
  margin-bottom: var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  border: 1px solid transparent;
}

.alert-success { background: var(--color-success-surface); color: #00543d; border-color: #b3e0d4; }
.alert-danger { background: var(--color-danger-surface); color: #8a1f09; border-color: #f3c4bb; }
.alert-warning { background: var(--color-warning-surface); color: #92610a; border-color: #ffe0a3; }
.alert-info { background: var(--color-info-surface); color: #173a70; border-color: #b9d4f5; }

/* ============================================================
   BADGES for low stock, empty states
   ============================================================ */

.empty-state {
  text-align: center;
  padding: var(--space-10) var(--space-5);
  color: var(--color-text-secondary);
}

.empty-state svg { width: 48px; height: 48px; margin-bottom: var(--space-3); opacity: 0.4; }
.empty-state h3 { color: var(--color-text); margin-bottom: var(--space-1); }
.empty-state p { font-size: 13.5px; margin-bottom: var(--space-4); }

/* ============================================================
   MODAL
   ============================================================ */

.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(26, 26, 26, 0.5);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: var(--space-4);
}

.modal-overlay.active { display: flex; }

.modal {
  background: var(--color-canvas);
  border-radius: var(--radius-lg);
  max-width: 520px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-popover);
}

.modal-header {
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--color-border);
  display: flex; align-items: center; justify-content: space-between;
}

.modal-body { padding: var(--space-5); }
.modal-footer {
  padding: var(--space-4) var(--space-5);
  border-top: 1px solid var(--color-border);
  display: flex; justify-content: flex-end; gap: var(--space-2);
}

.modal-close {
  background: none; border: none; cursor: pointer;
  color: var(--color-text-secondary);
  padding: var(--space-1);
  display: flex;
}

/* ============================================================
   LOGIN PAGE
   ============================================================ */

.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-surface);
  padding: var(--space-4);
}

.login-card {
  background: var(--color-canvas);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  width: 100%;
  max-width: 380px;
  box-shadow: var(--shadow-md);
}

.login-logo {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: var(--space-6);
  text-align: center;
}

.login-logo img { height: 56px; width: 56px; object-fit: contain; margin-bottom: var(--space-3); border-radius: var(--radius-md); }
.login-logo h1 { font-size: 18px; }
.login-logo p { color: var(--color-text-secondary); font-size: 13px; margin-top: 2px; }

/* ============================================================
   UTILITIES
   ============================================================ */

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: var(--space-1); } .gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); } .gap-4 { gap: var(--space-4); }
.text-secondary { color: var(--color-text-secondary); }
.text-danger { color: var(--color-danger); }
.text-success { color: var(--color-success); }
.text-right { text-align: right; }
.text-center { text-align: center; }
.font-semibold { font-weight: 600; }
.mt-2 { margin-top: var(--space-2); } .mt-4 { margin-top: var(--space-4); }
.mb-0 { margin-bottom: 0; } .mb-2 { margin-bottom: var(--space-2); } .mb-4 { margin-bottom: var(--space-4); }
.w-full { width: 100%; }
.hidden { display: none !important; }
.divider { border: none; border-top: 1px solid var(--color-border); margin: var(--space-4) 0; }

/* ============================================================
   RESPONSIVE
   ============================================================ */

@media (max-width: 900px) {
  .sidebar {
    transform: translateX(-100%);
    transition: transform 0.2s ease;
    box-shadow: var(--shadow-popover);
  }
  .sidebar.open { transform: translateX(0); }
  .main-area { margin-left: 0; }
  .form-row-2, .form-row-3 { grid-template-columns: 1fr; }
  .mobile-menu-btn { display: flex !important; }
}

.mobile-menu-btn {
  display: none;
  background: none; border: none; cursor: pointer;
  padding: var(--space-2);
  align-items: center;
}

/* Print styles are handled separately per-receipt-template */
@media print {
  .no-print { display: none !important; }
}