/* ===== RCS Admin Area ===== */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

:root {
  --admin-bg: #F8FAFC;
  --admin-surface: #FFFFFF;
  --admin-surface-alt: #F1F5F9;
  --admin-border: #E2E8F0;
  --admin-border-hover: #CBD5E1;

  --admin-text: #0F172A;
  --admin-text-muted: #64748B;
  --admin-text-light: #94A3B8;

  --admin-primary: #476EA9;
  --admin-primary-hover: #3b5a8e;
  --admin-primary-subtle: #f2f5f9;

  --admin-success: #16A34A;
  --admin-success-bg: #DCFCE7;
  --admin-danger: #DC2626;
  --admin-danger-bg: #FEE2E2;
  --admin-warn: #D97706;
  --admin-warn-bg: #FEF3C7;

  --admin-radius: 10px;
  --admin-radius-sm: 6px;
  --admin-shadow-sm: 0 1px 3px rgba(15,23,42,0.06), 0 1px 2px rgba(15,23,42,0.04);
  --admin-shadow-md: 0 4px 6px -1px rgba(15,23,42,0.07), 0 2px 4px -2px rgba(15,23,42,0.05);
  --admin-shadow-lg: 0 10px 15px -3px rgba(15,23,42,0.08), 0 4px 6px -4px rgba(15,23,42,0.04);
}

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

html, body {
  height: 100%;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--admin-bg);
  color: var(--admin-text);
  -webkit-font-smoothing: antialiased;
  line-height: 1.5;
}

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

button { font-family: inherit; cursor: pointer; }
input, textarea, select { font-family: inherit; font-size: 0.92rem; }

/* ---------- Layout ---------- */
.admin-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.admin-header {
  background: var(--admin-surface);
  border-bottom: 1px solid var(--admin-border);
  padding: 0 24px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  position: sticky;
  top: 0;
  z-index: 50;
  box-shadow: var(--admin-shadow-sm);
}

.admin-header-left {
  display: flex;
  align-items: center;
  gap: 24px;
}

.admin-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  color: var(--admin-text);
  font-size: 0.95rem;
  letter-spacing: -0.01em;
}

.admin-brand img { height: 28px; width: auto; }

.admin-brand-badge {
  background: var(--admin-primary-subtle);
  color: var(--admin-primary);
  padding: 2px 8px;
  border-radius: var(--admin-radius-sm);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.admin-nav {
  display: flex;
  gap: 4px;
}

.admin-nav a {
  padding: 8px 14px;
  border-radius: var(--admin-radius-sm);
  color: var(--admin-text-muted);
  font-weight: 500;
  font-size: 0.88rem;
  transition: color 0.15s, background 0.15s;
  text-decoration: none;
}

.admin-nav a:hover { background: var(--admin-surface-alt); color: var(--admin-text); }
.admin-nav a.active { background: var(--admin-primary-subtle); color: var(--admin-primary); }
.admin-nav a[aria-disabled="true"] { opacity: 0.4; pointer-events: none; }

.admin-header-right {
  display: flex;
  align-items: center;
  gap: 14px;
}

.admin-user {
  font-size: 0.82rem;
  color: var(--admin-text-muted);
}

.admin-main {
  flex: 1;
  padding: 28px 24px 80px;
  max-width: 1280px;
  margin: 0 auto;
  width: 100%;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  border-radius: var(--admin-radius-sm);
  font-size: 0.88rem;
  font-weight: 600;
  border: 1px solid transparent;
  transition: all 0.15s;
  text-decoration: none;
  white-space: nowrap;
}

.btn:hover { text-decoration: none; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.btn--primary { background: var(--admin-primary); color: white; }
.btn--primary:hover:not(:disabled) { background: var(--admin-primary-hover); }

.btn--ghost { background: transparent; color: var(--admin-text); border-color: var(--admin-border); }
.btn--ghost:hover:not(:disabled) { background: var(--admin-surface-alt); border-color: var(--admin-border-hover); }

.btn--danger { background: var(--admin-danger); color: white; }
.btn--danger:hover:not(:disabled) { background: #b91c1c; }

.btn--sm { padding: 6px 10px; font-size: 0.8rem; }
.btn--icon { width: 32px; height: 32px; padding: 0; justify-content: center; }
.btn--icon svg { width: 16px; height: 16px; }

/* ---------- Page Headers ---------- */
.page-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.page-title {
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--admin-text);
}

.page-subtitle {
  color: var(--admin-text-muted);
  font-size: 0.9rem;
  margin-top: 4px;
}

/* ---------- Toolbar ---------- */
.toolbar {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.filter-chips {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.chip {
  padding: 7px 14px;
  border-radius: 999px;
  background: var(--admin-surface);
  border: 1px solid var(--admin-border);
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--admin-text-muted);
  cursor: pointer;
  transition: all 0.15s;
}

.chip:hover { border-color: var(--admin-border-hover); color: var(--admin-text); }
.chip.active { background: var(--admin-primary); color: white; border-color: var(--admin-primary); }

.search-input {
  flex: 1;
  min-width: 200px;
  max-width: 320px;
  padding: 9px 14px;
  border-radius: var(--admin-radius-sm);
  border: 1px solid var(--admin-border);
  background: var(--admin-surface);
  font-size: 0.9rem;
  color: var(--admin-text);
  transition: border-color 0.15s, box-shadow 0.15s;
}

.search-input:focus {
  outline: none;
  border-color: var(--admin-primary);
  box-shadow: 0 0 0 3px rgba(71,110,169,0.12);
}

/* ---------- Table ---------- */
.data-table-wrapper {
  background: var(--admin-surface);
  border: 1px solid var(--admin-border);
  border-radius: var(--admin-radius);
  overflow: hidden;
  box-shadow: var(--admin-shadow-sm);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
}

.data-table th,
.data-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--admin-border);
  font-size: 0.88rem;
  vertical-align: middle;
}

.data-table th {
  background: var(--admin-surface-alt);
  font-weight: 600;
  color: var(--admin-text-muted);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.data-table tbody tr:last-child td { border-bottom: none; }
.data-table tbody tr:hover { background: var(--admin-surface-alt); }

.data-table td.actions {
  text-align: right;
  white-space: nowrap;
}

.data-table td.actions .btn { margin-left: 6px; }

.thumb {
  width: 44px;
  height: 44px;
  object-fit: cover;
  border-radius: var(--admin-radius-sm);
  border: 1px solid var(--admin-border);
  background: var(--admin-surface-alt);
}

.thumb-placeholder {
  width: 44px;
  height: 44px;
  border-radius: var(--admin-radius-sm);
  background: var(--admin-surface-alt);
  border: 1px dashed var(--admin-border);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--admin-text-light);
  font-size: 0.7rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 9px;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.badge--success { background: var(--admin-success-bg); color: var(--admin-success); }
.badge--muted { background: var(--admin-surface-alt); color: var(--admin-text-muted); }
.badge--warn { background: var(--admin-warn-bg); color: var(--admin-warn); }

.table-empty {
  padding: 60px 24px;
  text-align: center;
  color: var(--admin-text-muted);
  font-size: 0.92rem;
}

/* ---------- Login Page ---------- */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
  padding: 24px;
  position: relative;
}

.login-back {
  position: absolute;
  top: 24px;
  left: 24px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: var(--admin-radius-sm);
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.12);
  color: rgba(255,255,255,0.85);
  font-size: 0.85rem;
  font-weight: 500;
  text-decoration: none;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}

.login-back:hover {
  background: rgba(255,255,255,0.14);
  border-color: rgba(255,255,255,0.22);
  color: #fff;
  text-decoration: none;
}

.login-back svg { width: 16px; height: 16px; }

@media (max-width: 480px) {
  .login-back { top: 14px; left: 14px; padding: 6px 10px; font-size: 0.8rem; }
}

.login-card {
  width: 100%;
  max-width: 420px;
  background: var(--admin-surface);
  border-radius: 14px;
  padding: 40px 36px;
  box-shadow: 0 25px 50px -12px rgba(0,0,0,0.4);
}

.login-logo {
  text-align: center;
  margin-bottom: 8px;
}

.login-logo img { height: 44px; }

.login-title {
  text-align: center;
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 16px 0 4px;
}

.login-subtitle {
  text-align: center;
  color: var(--admin-text-muted);
  font-size: 0.9rem;
  margin-bottom: 28px;
}

.field {
  display: block;
  margin-bottom: 16px;
}

.field-label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--admin-text);
  margin-bottom: 6px;
}

.field-input,
.field-select,
.field-textarea {
  width: 100%;
  padding: 10px 14px;
  border-radius: var(--admin-radius-sm);
  border: 1px solid var(--admin-border);
  background: var(--admin-surface);
  font-size: 0.92rem;
  color: var(--admin-text);
  transition: border-color 0.15s, box-shadow 0.15s;
}

.field-input:focus,
.field-select:focus,
.field-textarea:focus {
  outline: none;
  border-color: var(--admin-primary);
  box-shadow: 0 0 0 3px rgba(71,110,169,0.12);
}

.field-textarea {
  min-height: 110px;
  resize: vertical;
  font-family: inherit;
  line-height: 1.6;
}

.field-help {
  display: block;
  margin-top: 6px;
  font-size: 0.78rem;
  color: var(--admin-text-muted);
}

.field-error {
  display: none;
  margin-top: 12px;
  padding: 10px 14px;
  border-radius: var(--admin-radius-sm);
  background: var(--admin-danger-bg);
  color: var(--admin-danger);
  font-size: 0.85rem;
  font-weight: 500;
}

.field-error.show { display: block; }

.login-card .btn { width: 100%; justify-content: center; padding: 11px 16px; }

.checkbox {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-size: 0.88rem;
  color: var(--admin-text);
}

.checkbox input[type="checkbox"] { width: 16px; height: 16px; accent-color: var(--admin-primary); }

/* ---------- Form (product edit) ---------- */
.form-card {
  background: var(--admin-surface);
  border: 1px solid var(--admin-border);
  border-radius: var(--admin-radius);
  padding: 28px;
  box-shadow: var(--admin-shadow-sm);
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px 22px;
}

.form-grid .field--full { grid-column: 1 / -1; }

.form-section-title {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--admin-text-muted);
  margin: 22px 0 14px;
  grid-column: 1 / -1;
}

.form-section-title:first-child { margin-top: 0; }

.form-actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px solid var(--admin-border);
}

/* Image picker */
.image-picker {
  border: 1px solid var(--admin-border);
  border-radius: var(--admin-radius-sm);
  overflow: hidden;
  background: var(--admin-surface);
}

.image-picker-tabs {
  display: flex;
  border-bottom: 1px solid var(--admin-border);
  background: var(--admin-surface-alt);
}

.image-picker-tab {
  flex: 1;
  padding: 10px 14px;
  background: transparent;
  border: none;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--admin-text-muted);
  cursor: pointer;
  transition: color 0.15s, background 0.15s;
}

.image-picker-tab.active {
  background: var(--admin-surface);
  color: var(--admin-primary);
  box-shadow: inset 0 -2px 0 var(--admin-primary);
}

.image-picker-body { padding: 16px; }

.image-dropzone {
  border: 2px dashed var(--admin-border);
  border-radius: var(--admin-radius-sm);
  padding: 28px 16px;
  text-align: center;
  color: var(--admin-text-muted);
  font-size: 0.88rem;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}

.image-dropzone:hover,
.image-dropzone.dragover {
  border-color: var(--admin-primary);
  background: var(--admin-primary-subtle);
}

.image-dropzone strong { color: var(--admin-primary); font-weight: 600; }

.image-preview {
  margin-top: 14px;
  position: relative;
  border: 1px solid var(--admin-border);
  border-radius: var(--admin-radius-sm);
  background: var(--admin-surface-alt);
  padding: 12px;
  display: none;
}

.image-preview.show { display: block; }

.image-preview img {
  display: block;
  max-width: 100%;
  max-height: 200px;
  margin: 0 auto;
  border-radius: var(--admin-radius-sm);
}

.image-preview-remove {
  position: absolute;
  top: 8px;
  right: 8px;
  background: var(--admin-danger);
  color: white;
  border: none;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

/* ---------- Toast ---------- */
#admin-toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 100;
}

.admin-toast {
  padding: 12px 18px;
  border-radius: var(--admin-radius-sm);
  background: var(--admin-text);
  color: white;
  font-size: 0.88rem;
  font-weight: 500;
  box-shadow: var(--admin-shadow-lg);
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.25s, transform 0.25s;
  max-width: 360px;
}

.admin-toast.show { opacity: 1; transform: translateY(0); }
.admin-toast--success { background: #15803D; }
.admin-toast--error { background: var(--admin-danger); }
.admin-toast--warn { background: var(--admin-warn); }

/* ---------- Loader ---------- */
.loader-inline {
  display: inline-block;
  width: 14px;
  height: 14px;
  border: 2px solid rgba(255,255,255,0.4);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
  .admin-header { padding: 0 14px; gap: 12px; }
  .admin-nav { gap: 0; }
  .admin-nav a { padding: 6px 10px; font-size: 0.82rem; }
  .admin-user { display: none; }
  .admin-main { padding: 20px 14px 60px; }

  .page-title { font-size: 1.3rem; }
  .toolbar { flex-direction: column; align-items: stretch; }
  .search-input { max-width: none; }

  .data-table th:nth-child(2),
  .data-table td:nth-child(2) { display: none; } /* hide thumbnail col on mobile */

  .form-grid { grid-template-columns: 1fr; }
  .form-actions { flex-direction: column-reverse; }
  .form-actions .btn { width: 100%; justify-content: center; }
}