/* ==========================================================================
   DBDC4BADINH - ADMIN PORTAL STYLING (Retro State Style inspired by hienmau.vn)
   ========================================================================== */

:root {
  --admin-red: #b91c1c;
  --admin-red-dark: #991b1b;
  --admin-navy: #005588;
  --admin-navy-dark: #003366;
  --admin-gold: #d97706;
  --admin-bg: #e2e8f0;
  --admin-card-bg: #ffffff;
  --admin-border: #cbd5e1;
  --admin-text: #1e293b;
}

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

body {
  font-family: Arial, Helvetica, system-ui, -apple-system, sans-serif;
  background-color: var(--admin-bg);
  color: var(--admin-text);
  line-height: 1.5;
  padding-bottom: 40px;
}

.admin-wrapper {
  max-width: 1280px;
  margin: 0 auto;
  background: #ffffff;
  box-shadow: 0 6px 24px rgba(0,0,0,0.15);
  border-left: 1px solid var(--admin-border);
  border-right: 1px solid var(--admin-border);
}

/* HEADER HIENMAU.VN RETRO STYLE */
.admin-header {
  background: linear-gradient(135deg, #005588 0%, #003366 100%);
  color: #ffffff;
  padding: 16px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 4px solid var(--admin-red);
}

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

.admin-emblem {
  width: 54px;
  height: 54px;
  filter: drop-shadow(0 2px 4px rgba(0,0,0,0.25));
}

.admin-title-sub {
  font-size: 0.8rem;
  font-weight: bold;
  color: #fef08a;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.admin-title-main {
  font-size: 1.3rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.admin-user-badge {
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.25);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.82rem;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* MAIN DASHBOARD LAYOUT */
.admin-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  min-height: 680px;
}

@media (max-width: 860px) {
  .admin-layout {
    grid-template-columns: 1fr;
  }
}

/* SIDEBAR NAVIGATION */
.admin-sidebar {
  background: #f8fafc;
  border-right: 1.5px solid var(--admin-border);
  padding: 16px 0;
}

.admin-menu-item {
  padding: 12px 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.86rem;
  font-weight: bold;
  color: #334155;
  text-decoration: none;
  cursor: pointer;
  border-left: 4px solid transparent;
  transition: all 0.15s ease;
}

.admin-menu-item:hover {
  background: #e0f2fe;
  color: var(--admin-navy);
}

.admin-menu-item.active {
  background: #fee2e2;
  color: var(--admin-red);
  border-left-color: var(--admin-red);
}

.admin-menu-item i {
  font-size: 1.05rem;
  width: 20px;
  text-align: center;
}

/* CONTENT AREA */
.admin-main {
  padding: 24px;
  background: #ffffff;
}

/* STATS GRID CARDS (HIENMAU.VN INSPIRED) */
.admin-stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: #ffffff;
  border: 1.5px solid var(--admin-border);
  border-radius: 4px;
  padding: 16px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.05);
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-left: 5px solid var(--admin-navy);
}

.stat-card.red {
  border-left-color: var(--admin-red);
}

.stat-card.gold {
  border-left-color: var(--admin-gold);
}

.stat-card.green {
  border-left-color: #166534;
}

.stat-number {
  font-size: 1.8rem;
  font-weight: 900;
  color: var(--admin-navy);
  line-height: 1;
}

.stat-card.red .stat-number { color: var(--admin-red); }
.stat-card.gold .stat-number { color: var(--admin-gold); }
.stat-card.green .stat-number { color: #166534; }

.stat-label {
  font-size: 0.78rem;
  font-weight: bold;
  color: #64748b;
  text-transform: uppercase;
  margin-top: 4px;
}

.stat-icon {
  font-size: 2.2rem;
  opacity: 0.25;
}

/* TABLES & CONTROLS */
.admin-panel-title {
  font-size: 1.1rem;
  font-weight: 900;
  color: var(--admin-navy-dark);
  text-transform: uppercase;
  margin-bottom: 16px;
  padding-bottom: 6px;
  border-bottom: 2px solid var(--admin-navy);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
  background: #ffffff;
  border: 1.5px solid var(--admin-border);
}

.admin-table th {
  background: var(--admin-navy);
  color: #ffffff;
  font-weight: bold;
  padding: 10px 12px;
  text-align: left;
  border: 1px solid var(--admin-navy-dark);
  text-transform: uppercase;
  font-size: 0.78rem;
}

.admin-table td {
  padding: 10px 12px;
  border: 1px solid var(--admin-border);
}

.admin-table tr:nth-child(even) {
  background: #f8fafc;
}

.admin-table tr:hover {
  background: #e0f2fe;
}

/* BADGES & BUTTONS */
.badge-retro {
  display: inline-block;
  padding: 2px 8px;
  font-size: 0.72rem;
  font-weight: bold;
  border-radius: 2px;
  text-transform: uppercase;
}

.badge-green { background: #dcfce7; color: #166534; border: 1px solid #86efac; }
.badge-yellow { background: #fef3c7; color: #92400e; border: 1px solid #fde68a; }
.badge-red { background: #fee2e2; color: #991b1b; border: 1px solid #f87171; }
.badge-blue { background: #e0f2fe; color: #0369a1; border: 1px solid #7dd3fc; }

/* LOADING OVERLAY */
.admin-loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(15, 23, 42, 0.75);
  backdrop-filter: blur(3px);
  z-index: 99999;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: #ffffff;
}

.admin-spinner {
  width: 50px;
  height: 50px;
  border: 5px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: #fef08a;
  animation: spin 0.8s linear infinite;
  margin-bottom: 16px;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* GOOGLE DOCS STYLE RICH TEXT EDITOR TOOLBAR */
.gdocs-editor-container {
  border: 1px solid var(--admin-border);
  border-radius: 4px;
  background: #f8fafc;
  overflow: hidden;
}

.gdocs-editor-toolbar {
  background: #edf2f7;
  border-bottom: 1px solid var(--admin-border);
  padding: 6px 10px;
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
  align-items: center;
}

.gdocs-btn {
  background: #ffffff;
  border: 1px solid #cbd5e1;
  border-radius: 3px;
  padding: 4px 8px;
  font-size: 0.82rem;
  color: #334155;
  cursor: pointer;
  transition: all 0.1s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 28px;
  height: 28px;
}

.gdocs-btn:hover {
  background: #e0f2fe;
  color: var(--admin-navy);
  border-color: #7dd3fc;
}

.gdocs-btn:active {
  background: #bae6fd;
}

.gdocs-divider {
  width: 1px;
  height: 20px;
  background: #cbd5e1;
  margin: 0 4px;
}

.gdocs-editor-canvas {
  background: #ffffff;
  min-height: 240px;
  max-height: 420px;
  overflow-y: auto;
  padding: 16px;
  font-size: 0.92rem;
  color: #1e293b;
  outline: none;
  line-height: 1.7;
}

.gdocs-editor-canvas:focus {
  box-shadow: inset 0 0 0 2px rgba(0, 136, 204, 0.2);
}