/* -------------------------------------------------------------
 * ธีมสีราชการ น้ำเงิน-ทอง (Royal Blue & Gold Theme)
 * ------------------------------------------------------------- */
:root {
  --primary: #0c2340;          /* น้ำเงินเข้มราชการ */
  --primary-light: #1c3c66;    /* น้ำเงินสว่างขึ้น */
  --primary-dark: #061121;     /* น้ำเงินมืด */
  --secondary: #c5a059;        /* ทองหรูหรา */
  --secondary-light: #dfc287;  /* ทองอ่อน */
  --secondary-dark: #967439;   /* ทองเข้ม */
  --bg-main: #f0f2f5;          /* พื้นหลังหลัก */
  --bg-card: #ffffff;          /* พื้นหลังการ์ด */
  --text-dark: #1a202c;        /* ข้อความหลัก */
  --text-muted: #5a6a85;       /* ข้อความรอง */
  --text-on-primary: #ffffff;  /* ข้อความบนน้ำเงิน */
  --border-color: #e2e8f0;     /* สีเส้นขอบ */
  
  /* สีกลุ่ม Tier MTSS */
  --tier-1: #22c55e;           /* เขียว (ปกติ) */
  --tier-2: #eab308;           /* เหลือง (เสี่ยง) */
  --tier-3: #ef4444;           /* แดง (ต้องการการช่วยเหลือ) */
  
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
  
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --sidebar-width: 270px;
}

/* Reset & Base Styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Sarabun', 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: var(--bg-main);
  color: var(--text-dark);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

a {
  text-decoration: none;
  color: inherit;
}

button, input, select, textarea {
  font-family: inherit;
  font-size: 100%;
}

/* Initial App Loader */
.initial-loader {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100vh;
  background-color: var(--primary);
  color: var(--text-on-primary);
}

.loader-spinner {
  width: 50px;
  height: 50px;
  border: 5px solid rgba(255,255,255,0.1);
  border-top: 5px solid var(--secondary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-bottom: 20px;
}

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

/* -------------------------------------------------------------
 * 1. Login Page Layout (สวยสะกดตา)
 * ------------------------------------------------------------- */
.login-container {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: radial-gradient(circle at top left, var(--primary-light), var(--primary-dark));
  padding: 20px;
}

.login-card {
  width: 100%;
  max-width: 450px;
  background: rgba(255, 255, 255, 0.95);
  border-radius: 20px;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  border: 1px solid rgba(197, 160, 89, 0.3);
  animation: fadeInUp 0.6s ease-out;
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.login-header {
  background-color: var(--primary);
  padding: 40px 30px;
  text-align: center;
  color: var(--text-on-primary);
  position: relative;
  border-bottom: 4px solid var(--secondary);
}

.login-logo {
  font-size: 3rem;
  color: var(--secondary);
  margin-bottom: 15px;
}

.login-header h1 {
  font-size: 1.4rem;
  font-weight: 600;
  line-height: 1.5;
  margin-bottom: 5px;
}

.login-header p {
  font-size: 0.9rem;
  color: var(--secondary-light);
  font-weight: 300;
}

.login-body {
  padding: 40px 35px;
}

.form-group {
  margin-bottom: 22px;
  position: relative;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 8px;
  color: var(--primary-light);
}

.input-with-icon {
  position: relative;
}

.input-with-icon i {
  position: absolute;
  left: 15px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 18px;
}

.form-input {
  width: 100%;
  padding: 12px 15px 12px 45px;
  border: 1.5px solid var(--border-color);
  border-radius: 10px;
  background-color: #f8fafc;
  color: var(--text-dark);
  font-size: 0.95rem;
  outline: none;
  transition: var(--transition);
}

.form-input:focus {
  border-color: var(--primary);
  background-color: #ffffff;
  box-shadow: 0 0 0 3px rgba(12, 35, 64, 0.15);
}

.login-btn {
  width: 100%;
  padding: 14px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: var(--text-on-primary);
  border: none;
  border-radius: 10px;
  font-size: 1.05rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border-bottom: 3px solid var(--secondary);
}

.login-btn:hover {
  background: linear-gradient(135deg, var(--primary-light), var(--primary));
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  border-bottom-color: var(--secondary-light);
}

.login-footer {
  text-align: center;
  padding: 20px;
  font-size: 0.8rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border-color);
}

/* -------------------------------------------------------------
 * 2. Main Dashboard & App Shell Layout
 * ------------------------------------------------------------- */
.app-container {
  display: flex;
  min-height: 100vh;
}

/* Sidebar Navigation */
.app-sidebar {
  width: var(--sidebar-width);
  background-color: var(--primary);
  color: var(--text-on-primary);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  z-index: 100;
  transition: var(--transition);
  border-right: 4px solid var(--secondary);
}

.sidebar-logo {
  padding: 25px 20px;
  background-color: var(--primary-dark);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  border-bottom: 1px solid rgba(255,255,255,0.05);
}

.sidebar-logo-icon {
  font-size: 2.2rem;
  color: var(--secondary);
  margin-bottom: 10px;
}

.sidebar-logo h2 {
  font-size: 1.1rem;
  font-weight: 600;
  line-height: 1.4;
  color: #ffffff;
}

.sidebar-logo p {
  font-size: 0.75rem;
  color: var(--secondary-light);
  margin-top: 5px;
}

.sidebar-menu {
  flex: 1;
  padding: 20px 10px;
  overflow-y: auto;
  list-style: none;
}

.sidebar-menu li {
  margin-bottom: 6px;
}

.menu-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  color: #d1d5db;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 400;
  cursor: pointer;
  transition: var(--transition);
}

.menu-item i {
  font-size: 18px;
  color: var(--secondary-light);
}

.menu-item:hover {
  background-color: rgba(255, 255, 255, 0.08);
  color: #ffffff;
}

.menu-item.active {
  background: linear-gradient(90deg, var(--primary-light), var(--primary-dark));
  color: var(--secondary);
  font-weight: 600;
  box-shadow: inset 4px 0 0 var(--secondary);
}

.menu-item.active i {
  color: var(--secondary);
}

.sidebar-footer {
  padding: 15px 20px;
  background-color: var(--primary-dark);
  font-size: 0.75rem;
  text-align: center;
  color: rgba(255,255,255,0.4);
  border-top: 1px solid rgba(255,255,255,0.05);
}

/* Main Content Area */
.app-main {
  margin-left: var(--sidebar-width);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  transition: var(--transition);
}

/* Header Navbar */
.app-header {
  height: 70px;
  background-color: #ffffff;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 30px;
  position: sticky;
  top: 0;
  z-index: 99;
  box-shadow: var(--shadow-sm);
}

.header-left {
  display: flex;
  align-items: center;
  gap: 15px;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 24px;
  color: var(--primary);
  cursor: pointer;
}

.header-title {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--primary);
}

.header-right {
  display: flex;
  align-items: center;
  gap: 20px;
}

.user-profile {
  display: flex;
  align-items: center;
  gap: 12px;
}

.user-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--secondary-light), var(--secondary));
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.1rem;
  border: 2px solid var(--border-color);
}

.user-info {
  display: flex;
  flex-direction: column;
}

.user-name {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-dark);
}

.user-role-badge {
  display: inline-block;
  align-self: flex-start;
  font-size: 0.75rem;
  padding: 2px 8px;
  border-radius: 12px;
  background-color: #fef3c7;
  color: #92400e;
  border: 1px solid var(--secondary-light);
  font-weight: 500;
  margin-top: 2px;
}

.logout-btn {
  background: none;
  border: 1px solid var(--border-color);
  padding: 8px 12px;
  border-radius: 8px;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition);
}

.logout-btn:hover {
  background-color: #fee2e2;
  color: #dc2626;
  border-color: #fca5a5;
}

/* Page Container & Scroll */
.page-container {
  padding: 30px;
  flex: 1;
}

/* -------------------------------------------------------------
 * 3. Dashboard UI Elements
 * ------------------------------------------------------------- */
.dashboard-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 25px;
}

.title-with-subtitle h1 {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--primary);
}

.title-with-subtitle p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-top: 5px;
}

/* Stats Cards Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  margin-bottom: 30px;
}

.stat-card {
  background-color: var(--bg-card);
  border-radius: 16px;
  padding: 24px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--secondary-light);
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background-color: var(--primary);
}

.stat-card.gold::before { background-color: var(--secondary); }
.stat-card.success::before { background-color: var(--tier-1); }
.stat-card.warning::before { background-color: var(--tier-2); }
.stat-card.danger::before { background-color: var(--tier-3); }

.stat-info {
  display: flex;
  flex-direction: column;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.stat-value {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--primary);
}

.stat-icon {
  font-size: 2.2rem;
  color: rgba(12, 35, 64, 0.15);
}

.stat-card.gold .stat-icon { color: rgba(197, 160, 89, 0.25); }
.stat-card.success .stat-icon { color: rgba(34, 197, 94, 0.25); }
.stat-card.warning .stat-icon { color: rgba(234, 179, 8, 0.25); }
.stat-card.danger .stat-icon { color: rgba(239, 68, 68, 0.25); }

/* Dashboard Filters Panel */
.filter-panel {
  background-color: var(--bg-card);
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 25px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
}

.filter-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 15px;
  align-items: flex-end;
}

.filter-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.filter-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--primary);
}

.filter-select, .filter-input {
  width: 100%;
  padding: 10px;
  border: 1.5px solid var(--border-color);
  border-radius: 8px;
  background-color: #ffffff;
  outline: none;
  font-size: 0.9rem;
  transition: var(--transition);
}

.filter-select:focus, .filter-input:focus {
  border-color: var(--primary);
}

.btn-filter-reset {
  background-color: #f1f5f9;
  border: 1px solid var(--border-color);
  padding: 10px 15px;
  border-radius: 8px;
  color: var(--text-dark);
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 41px;
}

.btn-filter-reset:hover {
  background-color: #e2e8f0;
}

/* Charts Grid */
.charts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
  gap: 25px;
  margin-bottom: 30px;
}

.chart-card {
  background-color: var(--bg-card);
  border-radius: 16px;
  padding: 24px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
}

.chart-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  border-bottom: 2px solid var(--border-color);
  padding-bottom: 12px;
}

.chart-header h3 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.chart-header h3 i {
  color: var(--secondary);
}

.chart-container {
  position: relative;
  flex: 1;
  min-height: 300px;
}

/* Heatmap Grid */
.heatmap-table-container {
  overflow-x: auto;
  margin-top: 10px;
}

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

.heatmap-table th, .heatmap-table td {
  padding: 12px;
  text-align: center;
  border: 1px solid var(--border-color);
  font-size: 0.85rem;
}

.heatmap-table th {
  background-color: var(--primary);
  color: #ffffff;
}

.heatmap-cell {
  font-weight: 600;
  color: #ffffff;
}

/* -------------------------------------------------------------
 * 4. General Table & Action Panel Styles
 * ------------------------------------------------------------- */
.card-table-panel {
  background-color: var(--bg-card);
  border-radius: 16px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
  overflow: hidden;
  margin-bottom: 35px;
}

.panel-header {
  padding: 20px 25px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 15px;
}

.panel-title {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--primary);
}

.panel-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: var(--text-on-primary);
  border: none;
  padding: 10px 18px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  border-bottom: 2px solid var(--secondary);
  transition: var(--transition);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background-color: #ffffff;
  color: var(--primary);
  border: 1.5px solid var(--primary);
  padding: 9px 18px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition);
}

.btn-secondary:hover {
  background-color: rgba(12, 35, 64, 0.05);
}

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

.nited-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.nited-table th {
  background-color: #f8fafc;
  color: var(--primary);
  padding: 15px 20px;
  font-weight: 600;
  font-size: 0.9rem;
  border-bottom: 2.5px solid var(--border-color);
}

.nited-table td {
  padding: 15px 20px;
  font-size: 0.9rem;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-dark);
}

.nited-table tbody tr:hover {
  background-color: #f8fafc;
}

/* Tier Badges */
.tier-badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
  text-align: center;
  color: #ffffff;
}

.tier-badge.tier-1 { background-color: var(--tier-1); }
.tier-badge.tier-2 { background-color: var(--tier-2); }
.tier-badge.tier-3 { background-color: var(--tier-3); }

/* Progress Badges */
.progress-badge {
  display: inline-block;
  padding: 3px 8px;
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 500;
}

.progress-badge.high { background-color: #dcfce7; color: #166534; }
.progress-badge.medium { background-color: #fef9c3; color: #854d0e; }
.progress-badge.same { background-color: #f3f4f6; color: #374151; }
.progress-badge.alert { background-color: #fee2e2; color: #991b1b; }

/* Action Buttons */
.action-buttons {
  display: flex;
  gap: 8px;
}

.btn-icon {
  width: 32px;
  height: 32px;
  border-radius: 6px;
  border: 1px solid var(--border-color);
  background-color: #ffffff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  color: var(--text-muted);
}

.btn-icon.edit:hover {
  color: var(--primary);
  background-color: rgba(12, 35, 64, 0.08);
  border-color: var(--primary);
}

.btn-icon.delete:hover {
  color: var(--danger);
  background-color: #fee2e2;
  border-color: #fca5a5;
}

.btn-icon.approve:hover {
  color: var(--tier-1);
  background-color: #dcfce7;
  border-color: var(--tier-1);
}

/* -------------------------------------------------------------
 * 5. Import/Export Screen & Preview Styles
 * ------------------------------------------------------------- */
.import-section {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 25px;
  margin-bottom: 30px;
}

@media (max-width: 900px) {
  .import-section {
    grid-template-columns: 1fr;
  }
}

.import-instruction-card {
  background-color: var(--bg-card);
  border-radius: 16px;
  padding: 25px;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}

.import-instruction-card h3 {
  font-size: 1.1rem;
  color: var(--primary);
  margin-bottom: 15px;
}

.instruction-list {
  padding-left: 20px;
  margin-bottom: 20px;
}

.instruction-list li {
  margin-bottom: 10px;
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.template-download-box {
  background-color: #f8fafc;
  border-radius: 10px;
  padding: 15px;
  border: 1px solid var(--border-color);
  margin-top: 15px;
}

.template-download-box h4 {
  font-size: 0.9rem;
  color: var(--primary);
  margin-bottom: 10px;
}

.template-btn-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.btn-download {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  font-size: 0.85rem;
  color: var(--primary);
  border: 1px solid var(--primary);
  background-color: #ffffff;
  border-radius: 6px;
  cursor: pointer;
  font-weight: 500;
  transition: var(--transition);
}

.btn-download:hover {
  background-color: var(--primary);
  color: var(--text-on-primary);
}

/* File Upload Zone */
.upload-zone {
  border: 2px dashed var(--secondary-light);
  background-color: rgba(197, 160, 89, 0.05);
  border-radius: 16px;
  padding: 50px 30px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.upload-zone:hover {
  background-color: rgba(197, 160, 89, 0.1);
  border-color: var(--secondary);
}

.upload-icon {
  font-size: 3.5rem;
  color: var(--secondary);
  margin-bottom: 20px;
}

.upload-zone h3 {
  font-size: 1.15rem;
  color: var(--primary);
  margin-bottom: 10px;
}

.upload-zone p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.upload-zone input {
  display: none;
}

/* Preview Row Validation Table */
.preview-row-success {
  background-color: rgba(34, 197, 94, 0.08);
}

.preview-row-error {
  background-color: rgba(239, 68, 68, 0.08);
}

.preview-error-list {
  font-size: 0.8rem;
  color: var(--danger);
  list-style: none;
  margin-top: 4px;
}

.preview-error-list li {
  margin-bottom: 2px;
}

/* -------------------------------------------------------------
 * 6. Modal Dialogs / Forms
 * ------------------------------------------------------------- */
.modal-overlay {
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: rgba(6, 17, 33, 0.6);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal-content {
  background-color: #ffffff;
  border-radius: 16px;
  width: 100%;
  max-width: 600px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-color);
  overflow: hidden;
  animation: modalScaleUp 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes modalScaleUp {
  from { transform: scale(0.95); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.modal-header {
  background-color: var(--primary);
  color: var(--text-on-primary);
  padding: 18px 25px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 3px solid var(--secondary);
}

.modal-header h3 {
  font-size: 1.15rem;
  font-weight: 600;
}

.modal-close {
  background: none;
  border: none;
  color: #ffffff;
  font-size: 24px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0.7;
  transition: var(--transition);
}

.modal-close:hover {
  opacity: 1;
}

.modal-body {
  padding: 25px;
  max-height: 70vh;
  overflow-y: auto;
}

.modal-footer {
  padding: 15px 25px;
  border-top: 1px solid var(--border-color);
  background-color: #f8fafc;
  display: flex;
  justify-content: flex-end;
  gap: 12px;
}

/* Grid layout for modal forms */
.form-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 15px;
}

@media (max-width: 600px) {
  .form-grid-2 {
    grid-template-columns: 1fr;
  }
}

.form-field {
  width: 100%;
  padding: 10px 12px;
  border: 1.5px solid var(--border-color);
  border-radius: 8px;
  outline: none;
  font-size: 0.9rem;
  transition: var(--transition);
  background-color: #ffffff;
}

.form-field:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(12, 35, 64, 0.1);
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: 25px;
  right: 25px;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.toast {
  background-color: #ffffff;
  border-left: 4px solid var(--primary);
  box-shadow: var(--shadow-lg);
  border-radius: 8px;
  padding: 16px 20px;
  color: var(--text-dark);
  font-size: 0.9rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 12px;
  animation: slideInRight 0.3s ease;
  min-width: 300px;
}

.toast.success { border-left-color: var(--tier-1); }
.toast.error { border-left-color: var(--tier-3); }

@keyframes slideInRight {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* -------------------------------------------------------------
 * 7. Learning Media Catalog CSS
 * ------------------------------------------------------------- */
.media-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
  margin-top: 20px;
}

.media-card {
  background-color: var(--bg-card);
  border-radius: 12px;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
}

.media-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--secondary-light);
}

.media-card-header {
  padding: 15px 20px;
  background-color: #f8fafc;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.media-type-badge {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 4px;
  background-color: #e2e8f0;
  color: var(--primary);
}

.media-status-badge {
  font-size: 0.75rem;
  font-weight: 500;
  padding: 2px 6px;
  border-radius: 4px;
}

.media-status-badge.pending { background-color: #fef3c7; color: #d97706; }
.media-status-badge.approved { background-color: #dcfce7; color: #16a34a; }
.media-status-badge.rejected { background-color: #fee2e2; color: #dc2626; }

.media-card-body {
  padding: 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.media-card-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 8px;
  line-height: 1.4;
}

.media-card-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 15px;
  line-height: 1.5;
  flex: 1;
}

.media-meta-info {
  display: flex;
  flex-direction: column;
  gap: 5px;
  font-size: 0.8rem;
  color: var(--text-muted);
  border-top: 1px solid #f1f5f9;
  padding-top: 10px;
  margin-bottom: 15px;
}

.media-meta-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.media-meta-item i {
  font-size: 14px;
  color: var(--secondary);
}

.media-card-footer {
  padding: 0 20px 20px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

/* -------------------------------------------------------------
 * 8. Responsive Design & Sidebar Toggle (Mobile Friendly)
 * ------------------------------------------------------------- */
@media (max-width: 800px) {
  --sidebar-width: 0px;
  
  .app-sidebar {
    transform: translateX(-100%);
    width: 270px;
  }
  
  .app-sidebar.show-sidebar {
    transform: translateX(0);
  }
  
  .app-main {
    margin-left: 0;
  }
  
  .menu-toggle {
    display: block;
  }
  
  .app-header {
    padding: 0 15px;
  }
  
  .page-container {
    padding: 15px;
  }
  
  .charts-grid {
    grid-template-columns: 1fr;
  }
  
  .stats-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 500px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }
  .header-title {
    font-size: 0.95rem;
  }
  .user-info {
    display: none;
  }
}

/* Print Styles for PDF Export */
@media print {
  body {
    background-color: #ffffff;
    color: #000000;
  }
  .app-sidebar, .app-header, .panel-actions, .filter-panel, .toast-container, .modal-overlay {
    display: none !important;
  }
  .app-main {
    margin-left: 0 !important;
  }
  .page-container {
    padding: 0 !important;
  }
  .card-table-panel {
    border: none;
    box-shadow: none;
  }
  .nited-table th {
    background-color: #f1f5f9 !important;
    color: #000000 !important;
    border-bottom: 2px solid #000000;
  }
  .nited-table td {
    border-bottom: 1px solid #e2e8f0;
  }
}