/* ==========================================================================
   Aprende Ya Admin Dashboard - Premium Modern Stylesheet
   Design Philosophy: Glassmorphism, Fluid Transitions, HSL Palettes, Clean SaaS
   ========================================================================== */

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

:root {
  /* HSL Tailored Brand Colors */
  --primary: hsl(220, 95%, 52%);
  --primary-rgb: 36, 107, 243;
  --primary-dark: hsl(220, 100%, 40%);
  --primary-light: hsl(220, 100%, 96%);
  --cyan: hsl(182, 100%, 42%);
  --cyan-rgb: 0, 206, 214;
  --cyan-light: hsl(182, 100%, 96%);
  --accent: hsl(260, 90%, 65%);
  --accent-light: hsl(260, 90%, 97%);

  /* Neutrals */
  --dark: hsl(222, 47%, 11%);
  --dark-sidebar: hsl(222, 47%, 8%);
  --dark-light: hsl(217, 30%, 18%);
  --gray: hsl(215, 16%, 47%);
  --gray-medium: hsl(213, 27%, 84%);
  --gray-light: hsl(210, 40%, 96%);
  --white: hsl(0, 0%, 100%);
  
  /* Status Colors */
  --success: hsl(142, 72%, 40%);
  --success-light: hsl(142, 72%, 96%);
  --error: hsl(350, 85%, 55%);
  --error-light: hsl(350, 85%, 96%);
  --warning: hsl(38, 92%, 50%);
  --warning-light: hsl(38, 92%, 96%);

  /* Glassmorphism & Shadows */
  --glass-bg: rgba(255, 255, 255, 0.75);
  --glass-border: rgba(255, 255, 255, 0.6);
  --backdrop-blur: blur(16px);
  
  --shadow-sm: 0 4px 12px rgba(15, 23, 42, 0.03);
  --shadow-md: 0 12px 30px -10px rgba(15, 23, 42, 0.06);
  --shadow-lg: 0 30px 60px -15px rgba(15, 23, 42, 0.1);
  --shadow-glow: 0 0 25px rgba(36, 107, 243, 0.15);
  --shadow-cyan: 0 0 25px rgba(0, 206, 214, 0.15);
  
  /* Borders and Radii */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.35s cubic-bezier(0.25, 0.8, 0.25, 1);
  --transition-bounce: 0.45s cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

html {
  font-size: 15px;
}

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--gray-light);
  color: var(--dark-light);
  min-height: 100vh;
  line-height: 1.5;
  display: flex;
}

/* Scrollbar Customization */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: rgba(0,0,0,0.02);
}
::-webkit-scrollbar-thumb {
  background: rgba(0, 0, 0, 0.12);
  border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(0, 0, 0, 0.25);
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Poppins', sans-serif;
  color: var(--dark);
  font-weight: 700;
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition-fast);
}

/* --- Layout Structure --- */
.admin-container {
  display: flex;
  width: 100%;
  min-height: 100vh;
}

/* --- Sidebar Navigation --- */
.admin-sidebar {
  width: 280px;
  background-color: var(--dark-sidebar);
  color: var(--white);
  padding: 30px 20px;
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  border-right: 1px solid rgba(255, 255, 255, 0.05);
  position: relative;
  z-index: 10;
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 10px 30px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  margin-bottom: 25px;
}

.brand-icon-box {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--primary), var(--cyan));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-weight: 800;
  font-size: 1.15rem;
  box-shadow: var(--shadow-glow);
}

.brand-text {
  font-family: 'Manrope', sans-serif;
  font-weight: 800;
  font-size: 1.3rem;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, var(--white) 30%, var(--cyan-light) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-text span {
  font-size: 0.75rem;
  display: block;
  font-weight: 600;
  color: var(--cyan);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-top: -3px;
  -webkit-text-fill-color: initial;
}

.sidebar-user {
  display: flex;
  align-items: center;
  gap: 12px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.05);
  padding: 12px 15px;
  border-radius: var(--radius-md);
  margin-bottom: 30px;
}

.user-avatar {
  width: 36px;
  height: 36px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--cyan);
  font-size: 1rem;
  font-weight: 700;
  border: 1.5px solid var(--cyan);
}

.user-info h4 {
  color: var(--white);
  font-size: 0.85rem;
  font-weight: 600;
}

.user-info p {
  font-size: 0.72rem;
  color: var(--gray);
}

.sidebar-menu {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.menu-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--gray);
  font-weight: 700;
  margin: 15px 10px 5px;
}

.menu-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  color: rgba(255, 255, 255, 0.65);
  font-weight: 500;
  font-size: 0.92rem;
  transition: all var(--transition-fast);
}

.menu-item i {
  font-size: 1.05rem;
  width: 20px;
  transition: transform var(--transition-bounce);
}

.menu-item:hover {
  color: var(--white);
  background: rgba(255, 255, 255, 0.04);
}

.menu-item:hover i {
  transform: scale(1.15);
}

.menu-item.active {
  color: var(--white);
  background: linear-gradient(135deg, rgba(36, 107, 243, 0.2) 0%, rgba(0, 206, 214, 0.1) 100%);
  border-left: 3px solid var(--cyan);
  box-shadow: inset 0 0 15px rgba(36, 107, 243, 0.05);
}

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

.sidebar-footer {
  margin-top: auto;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.logout-btn {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  color: hsl(350, 85%, 65%);
  font-weight: 500;
  font-size: 0.92rem;
  width: 100%;
  text-align: left;
  transition: all var(--transition-fast);
}

.logout-btn:hover {
  background: rgba(239, 68, 68, 0.08);
  color: hsl(350, 85%, 55%);
}

/* --- Main Content Area --- */
.admin-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0; /* Prevents flex children from expanding */
  background-color: var(--gray-light);
  min-height: 100vh;
}

/* Header/Topbar */
.admin-topbar {
  background-color: var(--white);
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
  padding: 18px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 8;
  box-shadow: var(--shadow-sm);
}

.topbar-title h1 {
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--dark);
}

.topbar-title p {
  font-size: 0.8rem;
  color: var(--gray);
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 20px;
}

.view-site-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--primary-light);
  color: var(--primary);
  border: 1px solid rgba(36, 107, 243, 0.1);
  padding: 8px 16px;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  font-weight: 600;
}

.view-site-link:hover {
  background: var(--primary);
  color: var(--white);
  transform: translateY(-1px);
}

/* --- Dashboard Content Grid --- */
.admin-content {
  padding: 40px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 30px;
  max-width: 1400px;
  width: 100%;
  margin: 0 auto;
}

/* Metrics Cards */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}

.metric-card {
  background-color: var(--white);
  border-radius: var(--radius-lg);
  padding: 24px;
  border: 1px solid rgba(0, 0, 0, 0.03);
  box-shadow: var(--shadow-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.metric-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.metric-info h3 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--gray);
  margin-bottom: 6px;
}

.metric-info p {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--dark);
  font-family: 'Poppins', sans-serif;
  line-height: 1.1;
}

.metric-icon-box {
  width: 54px;
  height: 54px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.metric-icon-box.blue {
  background-color: var(--primary-light);
  color: var(--primary);
}

.metric-icon-box.cyan {
  background-color: var(--cyan-light);
  color: var(--cyan);
}

.metric-icon-box.purple {
  background-color: var(--accent-light);
  color: var(--accent);
}

.metric-icon-box.success {
  background-color: var(--success-light);
  color: var(--success);
}

/* Dashboard Sections / Containers */
.dashboard-card {
  background-color: var(--white);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(0, 0, 0, 0.03);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

.dashboard-card-header {
  padding: 24px 30px;
  border-bottom: 1px solid rgba(0,0,0,0.05);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 15px;
}

.dashboard-card-header h2 {
  font-size: 1.15rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 10px;
}

.dashboard-card-header h2 i {
  color: var(--primary);
}

.dashboard-card-body {
  padding: 30px;
}

/* Table styling for courses / messages */
.responsive-table {
  width: 100%;
  overflow-x: auto;
}

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

.admin-table th {
  padding: 14px 20px;
  background-color: var(--gray-light);
  color: var(--gray);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 1.5px solid rgba(0, 0, 0, 0.05);
}

.admin-table td {
  padding: 16px 20px;
  border-bottom: 1px solid rgba(0, 0, 0, 0.04);
  font-size: 0.9rem;
  color: var(--dark-light);
  vertical-align: middle;
}

.admin-table tr:last-child td {
  border-bottom: none;
}

.admin-table tr:hover td {
  background-color: rgba(0, 0, 0, 0.005);
}

/* Status Badges */
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 10px;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 600;
}

.status-badge.active {
  background-color: var(--success-light);
  color: var(--success);
}

.status-badge.inactive {
  background-color: var(--error-light);
  color: var(--error);
}

.category-tag {
  display: inline-block;
  padding: 3px 10px;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
}

.category-tag.blue { background-color: var(--primary-light); color: var(--primary); }
.category-tag.cyan { background-color: var(--cyan-light); color: var(--cyan); }
.category-tag.purple { background-color: var(--accent-light); color: var(--accent); }

/* Buttons Style */
.btn-admin {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-bounce);
  border: none;
  font-family: inherit;
}

.btn-admin-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--cyan) 100%);
  color: var(--white);
  box-shadow: var(--shadow-sm);
}

.btn-admin-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-admin-secondary {
  background-color: var(--gray-light);
  color: var(--dark-light);
  border: 1px solid var(--gray-medium);
}

.btn-admin-secondary:hover {
  background-color: var(--gray-medium);
}

.btn-admin-danger {
  background-color: var(--error-light);
  color: var(--error);
}

.btn-admin-danger:hover {
  background-color: var(--error);
  color: var(--white);
}

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

.btn-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  cursor: pointer;
  transition: var(--transition-fast);
  border: none;
}

.btn-icon.edit {
  background-color: var(--primary-light);
  color: var(--primary);
}
.btn-icon.edit:hover {
  background-color: var(--primary);
  color: var(--white);
}

.btn-icon.delete {
  background-color: var(--error-light);
  color: var(--error);
}
.btn-icon.delete:hover {
  background-color: var(--error);
  color: var(--white);
}

.btn-icon.manage {
  background-color: var(--accent-light);
  color: var(--accent);
}
.btn-icon.manage:hover {
  background-color: var(--accent);
  color: var(--white);
}

/* Modals */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(15, 23, 42, 0.4);
  backdrop-filter: blur(8px);
  z-index: 999;
  display: none;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.modal-overlay.active {
  display: flex;
  opacity: 1;
}

.admin-modal {
  background: var(--white);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 600px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--glass-border);
  transform: scale(0.9);
  transition: transform var(--transition-bounce);
}

.modal-overlay.active .admin-modal {
  transform: scale(1);
}

.modal-header {
  padding: 24px 30px;
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-header h3 {
  font-size: 1.15rem;
  font-weight: 700;
}

.close-modal-btn {
  background: none;
  border: none;
  font-size: 1.2rem;
  cursor: pointer;
  color: var(--gray);
  transition: var(--transition-fast);
}

.close-modal-btn:hover {
  color: var(--dark);
}

.modal-body {
  padding: 30px;
}

.modal-footer {
  padding: 20px 30px;
  border-top: 1px solid rgba(0,0,0,0.05);
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  background-color: var(--gray-light);
  border-bottom-left-radius: var(--radius-lg);
  border-bottom-right-radius: var(--radius-lg);
}

/* Premium Forms Design */
.form-group {
  margin-bottom: 20px;
}

.form-group:last-child {
  margin-bottom: 0;
}

.form-label {
  display: block;
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--dark-light);
  margin-bottom: 8px;
}

.form-input {
  width: 100%;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  border: 1.5px solid var(--gray-medium);
  background-color: var(--white);
  color: var(--dark);
  font-size: 0.9rem;
  font-family: inherit;
  transition: all var(--transition-fast);
}

.form-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(36, 107, 243, 0.1);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

textarea.form-input {
  resize: vertical;
  min-height: 100px;
}

/* Switch styling */
.switch-group {
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  user-select: none;
}

.switch-control {
  position: relative;
  width: 48px;
  height: 26px;
  background-color: var(--gray-medium);
  border-radius: 50px;
  transition: background-color var(--transition-fast);
}

.switch-control::after {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 20px;
  height: 20px;
  background-color: var(--white);
  border-radius: 50%;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast);
}

input[type="checkbox"]:checked + .switch-control {
  background-color: var(--success);
}

input[type="checkbox"]:checked + .switch-control::after {
  transform: translateX(22px);
}

/* --- Icon Grid Picker --- */
.icon-picker-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 12px;
  max-height: 200px;
  overflow-y: auto;
  padding: 10px;
  border: 1.5px solid var(--gray-medium);
  border-radius: var(--radius-md);
  background-color: var(--gray-light);
}

.icon-picker-item {
  height: 44px;
  border-radius: var(--radius-sm);
  background-color: var(--white);
  border: 1px solid var(--gray-medium);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  color: var(--gray);
}

.icon-picker-item:hover {
  border-color: var(--primary);
  color: var(--primary);
  background-color: var(--primary-light);
  transform: scale(1.05);
}

.icon-picker-item.selected {
  border-color: var(--cyan);
  background-color: var(--cyan-light);
  color: var(--cyan);
  box-shadow: var(--shadow-cyan);
}

/* Login Screen Premium Styling */
.login-body {
  align-items: center;
  justify-content: center;
  background: var(--dark);
  position: relative;
  overflow: hidden;
}

.login-bg {
  position: absolute;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.login-shape-1 {
  position: absolute;
  top: -20%;
  left: -10%;
  width: 600px;
  height: 600px;
  background: var(--primary);
  filter: blur(140px);
  opacity: 0.15;
  border-radius: 50%;
}

.login-shape-2 {
  position: absolute;
  bottom: -20%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: var(--cyan);
  filter: blur(140px);
  opacity: 0.15;
  border-radius: 50%;
}

.login-box {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 440px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-xl);
  padding: 50px 40px;
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.3);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  animation: fadeInUp 0.8s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.login-logo {
  text-align: center;
  margin-bottom: 35px;
}

.login-logo .brand-icon-box {
  margin: 0 auto 15px;
  width: 48px;
  height: 48px;
  font-size: 1.35rem;
}

.login-logo h2 {
  color: var(--white);
  font-size: 1.55rem;
  letter-spacing: -0.5px;
  margin-bottom: 5px;
}

.login-logo p {
  color: var(--gray);
  font-size: 0.8rem;
}

.login-form .form-label {
  color: rgba(255, 255, 255, 0.7);
}

.login-form .form-input {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.15);
  color: var(--white);
}

.login-form .form-input:focus {
  border-color: var(--cyan);
  background: rgba(255, 255, 255, 0.08);
  box-shadow: 0 0 0 4px rgba(0, 206, 214, 0.15);
}

.login-alert {
  background: rgba(239, 68, 68, 0.15);
  border: 1.5px solid rgba(239, 68, 68, 0.25);
  color: hsl(350, 85%, 75%);
  padding: 12px 16px;
  border-radius: var(--radius-md);
  font-size: 0.82rem;
  font-weight: 500;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Toast notifications */
.toast-container {
  position: fixed;
  bottom: 30px;
  right: 30px;
  z-index: 10000;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.toast {
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  box-shadow: var(--shadow-lg);
  border-left: 4px solid var(--primary);
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 300px;
  transform: translateX(120%);
  transition: transform var(--transition-bounce), opacity var(--transition-fast);
  opacity: 0;
}

.toast.show {
  transform: translateX(0);
  opacity: 1;
}

.toast.success { border-left-color: var(--success); }
.toast.error { border-left-color: var(--error); }
.toast.warning { border-left-color: var(--warning); }

.toast-icon { font-size: 1.25rem; }
.toast.success .toast-icon { color: var(--success); }
.toast.error .toast-icon { color: var(--error); }
.toast.warning .toast-icon { color: var(--warning); }

.toast-content h4 {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--dark);
}
.toast-content p {
  font-size: 0.75rem;
  color: var(--gray);
}

/* Question Option Management */
.options-config-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 15px;
}

.option-config-item {
  display: flex;
  align-items: center;
  gap: 12px;
  background-color: var(--gray-light);
  padding: 10px 15px;
  border-radius: var(--radius-md);
  border: 1px solid var(--gray-medium);
}

.option-letter-badge {
  width: 28px;
  height: 28px;
  background-color: var(--dark);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.85rem;
}

.option-correct-radio {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.option-correct-radio input[type="radio"] {
  display: none;
}

.radio-checkmark {
  width: 20px;
  height: 20px;
  border: 2px solid var(--gray-medium);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.radio-checkmark::after {
  content: '';
  width: 8px;
  height: 8px;
  background-color: var(--success);
  border-radius: 50%;
  transform: scale(0);
  transition: transform var(--transition-fast);
}

input[type="radio"]:checked + .radio-checkmark {
  border-color: var(--success);
}

input[type="radio"]:checked + .radio-checkmark::after {
  transform: scale(1);
}

/* Empty State Card */
.empty-state {
  text-align: center;
  padding: 60px 40px;
}

.empty-state-icon {
  font-size: 3rem;
  color: var(--gray-medium);
  margin-bottom: 16px;
  animation: breathe 3s ease-in-out infinite;
}

.empty-state h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.empty-state p {
  color: var(--gray);
  font-size: 0.85rem;
  max-width: 320px;
  margin: 0 auto;
}

/* Loading Spinner general */
.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid rgba(36, 107, 243, 0.1);
  border-left-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 20px auto;
}

/* Responsive sidebar */
@media (max-width: 991px) {
  body {
    flex-direction: column;
  }
  .admin-sidebar {
    width: 100%;
    border-right: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    padding: 20px;
  }
  .sidebar-brand {
    padding-bottom: 15px;
    margin-bottom: 15px;
  }
  .sidebar-user {
    margin-bottom: 15px;
  }
  .admin-topbar {
    padding: 15px 20px;
  }
  .admin-content {
    padding: 20px;
  }
}