/* ==========================================================================
   TIRE MASTER - ADMIN PANEL STYLESHEET
   Dark Luxe Automotive Theme (Combina perfectamente con Tire Master & Mavelsa)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

:root {
  /* Paleta Dark Luxe */
  --admin-bg: #0d0f12;
  --admin-sidebar: #08090b;
  --admin-card: #15171c;
  --admin-card-hover: #1a1d24;
  --admin-border: #23262f;
  --admin-border-subtle: #191b22;
  --admin-border-focus: #3b82f6;

  /* Tipografía y Textos */
  --text-main: #f3f4f6;
  --text-title: #ffffff;
  --text-muted: #9ca3af;
  --text-dim: #6b7280;

  /* Acentos de Marca */
  --color-red: #e53935;
  --color-red-hover: #c62828;
  --color-red-bg: rgba(229, 57, 53, 0.12);
  --color-whatsapp: #25D366;
  --color-whatsapp-hover: #20ba59;
  --color-whatsapp-bg: rgba(37, 211, 102, 0.12);
  --color-truck: #f59e0b;
  --color-truck-bg: rgba(245, 158, 11, 0.12);
  --color-car: #3b82f6;
  --color-car-bg: rgba(59, 130, 246, 0.12);

  /* Botones */
  --btn-white: #ffffff;
  --btn-white-text: #0d0f12;
  --btn-dark: #20232a;
  --btn-dark-hover: #282c35;
  --btn-danger: #dc2626;
  --btn-danger-hover: #b91c1c;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
}

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

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

.admin-layout {
  display: flex;
  min-height: 100vh;
}

/* Sidebar Elegante */
.admin-sidebar {
  width: 270px;
  background-color: var(--admin-sidebar);
  border-right: 1px solid var(--admin-border);
  padding: 26px 20px;
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}

.admin-brand {
  display: flex;
  align-items: center;
  gap: 14px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--admin-border);
  margin-bottom: 28px;
}

.admin-brand-logo {
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, #1f232b 0%, #0d0f12 100%);
  border: 1px solid #333844;
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 17px;
  border-radius: var(--radius-sm);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

.admin-brand-name {
  font-size: 16px;
  font-weight: 900;
  color: var(--text-title);
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.admin-brand-badge {
  font-size: 10px;
  color: var(--color-red);
  font-weight: 800;
  letter-spacing: 1.6px;
  text-transform: uppercase;
  margin-top: 2px;
}

.admin-nav {
  display: flex;
  flex-direction: column;
  gap: 6px;
  list-style: none;
}

.admin-nav-item a {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 16px;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  border-radius: var(--radius-sm);
  transition: all 0.2s ease;
  border-left: 3px solid transparent;
}

.admin-nav-item a:hover {
  background-color: var(--btn-dark);
  color: #ffffff;
}

.admin-nav-item a.active {
  background: linear-gradient(90deg, rgba(229, 57, 53, 0.15) 0%, rgba(21, 23, 28, 0.6) 100%);
  color: #ffffff;
  border-left-color: var(--color-red);
}

.admin-nav-item a svg {
  flex-shrink: 0;
  opacity: 0.85;
}

.admin-nav-item a.active svg {
  opacity: 1;
  stroke: var(--color-red);
}

.sidebar-footer {
  margin-top: auto;
  padding-top: 24px;
  border-top: 1px solid var(--admin-border);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.sidebar-link {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  text-decoration: none;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  transition: all 0.2s ease;
}

.sidebar-link:hover {
  background: var(--btn-dark);
  color: #ffffff;
}

.sidebar-link.logout {
  color: #f87171;
}

.sidebar-link.logout:hover {
  background: rgba(220, 38, 38, 0.15);
  color: #ef4444;
}

/* Main Area */
.admin-main {
  flex: 1;
  padding: 36px 44px;
  overflow-y: auto;
  max-width: 1440px;
}

.admin-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 32px;
  flex-wrap: wrap;
  gap: 20px;
}

.admin-title {
  font-size: 26px;
  font-weight: 900;
  color: var(--text-title);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 6px;
}

.admin-subtitle {
  color: var(--text-muted);
  font-size: 14px;
}

.admin-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

/* Metrics */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 30px;
}

.metric-card {
  background: var(--admin-card);
  border: 1px solid var(--admin-border);
  padding: 24px 22px;
  border-radius: var(--radius-md);
  position: relative;
  overflow: hidden;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.metric-card:hover {
  transform: translateY(-2px);
  border-color: #3b4252;
}

.metric-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--admin-border);
}

.metric-card.accent-red::before { background: var(--color-red); }
.metric-card.accent-truck::before { background: var(--color-truck); }
.metric-card.accent-car::before { background: var(--color-car); }
.metric-card.accent-green::before { background: var(--color-whatsapp); }

.metric-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.metric-title {
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  font-weight: 800;
  letter-spacing: 1px;
}

.metric-icon {
  width: 34px;
  height: 34px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.metric-val {
  font-size: 34px;
  font-weight: 900;
  color: var(--text-title);
  line-height: 1;
  letter-spacing: -0.5px;
}

.metric-desc {
  font-size: 12px;
  color: var(--text-dim);
  margin-top: 8px;
}

/* WhatsApp Banner */
.wa-status-card {
  background: linear-gradient(135deg, rgba(37, 211, 102, 0.08) 0%, rgba(21, 23, 28, 0.9) 100%);
  border: 1px solid rgba(37, 211, 102, 0.25);
  border-radius: var(--radius-md);
  padding: 22px 26px;
  margin-bottom: 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 18px;
}

.wa-status-info {
  display: flex;
  align-items: center;
  gap: 18px;
}

.wa-icon-box {
  width: 46px;
  height: 46px;
  background: var(--color-whatsapp);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(37, 211, 102, 0.35);
  flex-shrink: 0;
}

.wa-label {
  font-size: 11px;
  color: var(--color-whatsapp);
  text-transform: uppercase;
  font-weight: 800;
  letter-spacing: 1px;
}

.wa-number {
  font-size: 18px;
  font-weight: 800;
  color: #ffffff;
  margin-top: 2px;
}

/* Sections & Tables */
.card-section {
  background: var(--admin-card);
  border: 1px solid var(--admin-border);
  border-radius: var(--radius-md);
  margin-bottom: 32px;
  overflow: hidden;
}

.card-section-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--admin-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
}

.card-section-title {
  font-size: 15px;
  font-weight: 900;
  color: var(--text-title);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.admin-table-wrapper {
  overflow-x: auto;
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 13px;
}

.admin-table th {
  background: #101216;
  padding: 14px 18px;
  color: var(--text-muted);
  font-weight: 800;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  border-bottom: 1px solid var(--admin-border);
  white-space: nowrap;
}

.admin-table td {
  padding: 15px 18px;
  border-bottom: 1px solid var(--admin-border-subtle);
  color: var(--text-main);
  vertical-align: middle;
}

.admin-table tr:hover td {
  background-color: var(--admin-card-hover);
}

.thumb-cell {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: #ffffff;
  padding: 3px;
  object-fit: contain;
  display: block;
  border: 1px solid #e5e7eb;
}

/* Badges */
.badge {
  display: inline-block;
  padding: 4px 9px;
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-radius: var(--radius-sm);
}

.badge-medida {
  background: #20232a;
  color: #ffffff;
  border: 1px solid #333844;
}

.badge-camion {
  background: var(--color-truck-bg);
  color: var(--color-truck);
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.badge-auto {
  background: var(--color-car-bg);
  color: var(--color-car);
  border: 1px solid rgba(59, 130, 246, 0.3);
}

.badge-stock {
  background: rgba(34, 197, 94, 0.12);
  color: #22c55e;
  border: 1px solid rgba(34, 197, 94, 0.3);
}

.badge-low {
  background: var(--color-red-bg);
  color: var(--color-red);
  border: 1px solid rgba(229, 57, 53, 0.3);
}

/* Buttons */
.btn-admin-primary {
  background: var(--btn-white);
  color: var(--btn-white-text);
  padding: 10px 20px;
  border: none;
  font-weight: 800;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: var(--radius-sm);
  transition: all 0.2s ease;
}

.btn-admin-primary:hover {
  background: #e2e8f0;
  color: #000000;
  transform: translateY(-1px);
}

.btn-admin-secondary {
  background: var(--btn-dark);
  color: #ffffff;
  border: 1px solid var(--admin-border);
  padding: 10px 18px;
  font-weight: 700;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: var(--radius-sm);
  transition: all 0.2s ease;
}

.btn-admin-secondary:hover {
  background: var(--btn-dark-hover);
  border-color: #4b5563;
  color: #ffffff;
}

.btn-admin-whatsapp {
  background: var(--color-whatsapp);
  color: #ffffff;
  padding: 10px 18px;
  border: none;
  font-weight: 800;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: var(--radius-sm);
  transition: all 0.2s ease;
}

.btn-admin-whatsapp:hover {
  background: var(--color-whatsapp-hover);
  color: #ffffff;
}

.btn-admin-edit {
  background: var(--btn-dark);
  color: #e5e7eb;
  padding: 6px 12px;
  border: 1px solid var(--admin-border);
  font-weight: 700;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  cursor: pointer;
  text-decoration: none;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  gap: 5px;
  transition: all 0.2s ease;
}

.btn-admin-edit:hover {
  background: #ffffff;
  color: #000000;
  border-color: #ffffff;
}

.btn-admin-danger {
  background: rgba(220, 38, 38, 0.12);
  color: #ef4444;
  border: 1px solid rgba(220, 38, 38, 0.3);
  padding: 6px 12px;
  font-weight: 700;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  cursor: pointer;
  text-decoration: none;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  gap: 5px;
  transition: all 0.2s ease;
}

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

/* Forms */
.form-card {
  background: var(--admin-card);
  border: 1px solid var(--admin-border);
  padding: 34px;
  border-radius: var(--radius-md);
  margin-bottom: 30px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}

.form-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

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

.form-field label {
  font-size: 12px;
  font-weight: 800;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.6px;
}

.form-input, .form-select, .form-textarea {
  background-color: #0f1115;
  border: 1px solid var(--admin-border);
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  color: #ffffff;
  font-size: 14px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--color-red);
  box-shadow: 0 0 0 2px rgba(229, 57, 53, 0.2);
}

.form-input::placeholder, .form-textarea::placeholder {
  color: var(--text-dim);
}

/* Alerts */
.admin-alert-success {
  background: rgba(34, 197, 94, 0.12);
  border: 1px solid rgba(34, 197, 94, 0.35);
  border-radius: var(--radius-sm);
  padding: 14px 18px;
  color: #4ade80;
  margin-bottom: 24px;
  font-size: 13px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 10px;
}

.admin-alert-danger {
  background: rgba(239, 68, 68, 0.12);
  border: 1px solid rgba(239, 68, 68, 0.35);
  border-radius: var(--radius-sm);
  padding: 14px 18px;
  color: #f87171;
  margin-bottom: 24px;
  font-size: 13px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 10px;
}

/* Responsive */
@media (max-width: 1024px) {
  .metrics-grid { grid-template-columns: repeat(2, 1fr); }
  .form-grid-3 { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .admin-layout { flex-direction: column; }
  .admin-sidebar { width: 100%; border-right: none; border-bottom: 1px solid var(--admin-border); }
  .admin-main { padding: 20px; }
  .metrics-grid { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
}