/* ==========================================================================
   SKYLOR INSTITUTE - CONTROL CENTER DESIGN SYSTEM
   Matches Frontend White Theme Brand Pedigree
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=Playfair+Display:ital,wght@0,600;0,700;1,400&family=JetBrains+Mono:wght@500;600&display=swap');

:root {
  --admin-bg: #F8FAFC;
  --admin-sidebar-bg: #0A192F;
  --admin-sidebar-hover: #162B4D;
  --admin-sidebar-active: #145E91;
  --admin-card-bg: #FFFFFF;
  --admin-border: #E2E8F0;
  --admin-border-subtle: #F1F5F9;
  --admin-text-main: #0F172A;
  --admin-text-muted: #64748B;
  --admin-accent: #145E91;
  --admin-accent-hover: #0D4872;
  --admin-accent-light: #EBF4FA;
  --admin-accent-border: #BAE0F7;
  --admin-success: #10B981;
  --admin-success-light: #D1FAE5;
  --admin-danger: #EF4444;
  --admin-danger-light: #FEE2E2;
  --admin-info: #0284C7;
  --admin-info-light: #E0F2FE;
  
  --admin-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --admin-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --admin-shadow-lg: 0 10px 15px -3px rgba(10, 25, 47, 0.08), 0 4px 6px -4px rgba(10, 25, 47, 0.04);
  --admin-shadow-card: 0 1px 3px rgba(0, 0, 0, 0.02), 0 10px 25px -5px rgba(10, 25, 47, 0.04);
  
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-serif: 'Playfair Display', Georgia, serif;
  --font-mono: 'JetBrains Mono', monospace;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 18px;
  --radius-full: 9999px;
}

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

body.admin-body {
  font-family: var(--font-sans);
  background-color: var(--admin-bg);
  color: var(--admin-text-main);
  height: 100vh;
  height: 100dvh;
  overflow: hidden;
  display: flex;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body.admin-body.admin-login-page {
  height: auto;
  min-height: 100vh;
  overflow: auto;
}

/* ==========================================================================
   SIDEBAR NAVIGATION
   ========================================================================== */
.admin-sidebar {
  width: 260px;
  height: 100vh;
  height: 100dvh;
  max-height: 100vh;
  background-color: var(--admin-sidebar-bg);
  color: #FFFFFF;
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  overflow-y: auto;
  overflow-x: hidden;
  position: relative;
  z-index: 50;
  border-right: 1px solid rgba(255, 255, 255, 0.06);
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, 0.2) transparent;
}

.admin-sidebar::-webkit-scrollbar {
  width: 5px;
}
.admin-sidebar::-webkit-scrollbar-track {
  background: transparent;
}
.admin-sidebar::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.2);
  border-radius: 4px;
}
.admin-sidebar::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.35);
}

.admin-brand {
  padding: 24px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  flex-shrink: 0;
}

.admin-brand-icon {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--admin-accent) 0%, #0D4872 100%);
  color: #FFFFFF;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.25rem;
  box-shadow: 0 4px 10px rgba(20, 94, 145, 0.3);
}

.admin-brand strong {
  display: block;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
  font-weight: 800;
  color: #FFFFFF;
}

.admin-brand span {
  font-size: 0.72rem;
  color: #94A3B8;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
}

.admin-nav {
  padding: 20px 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex-grow: 1;
}

.admin-nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 14px;
  color: #94A3B8;
  text-decoration: none;
  border-radius: var(--radius-md);
  font-size: 0.92rem;
  font-weight: 600;
  transition: all 0.2s ease;
  position: relative;
}

.admin-nav-item:hover {
  color: #FFFFFF;
  background-color: var(--admin-sidebar-hover);
}

.admin-nav-item.active {
  background-color: var(--admin-sidebar-active);
  color: #FFFFFF;
  box-shadow: 0 4px 12px rgba(20, 94, 145, 0.25);
}

.admin-sidebar-footer {
  padding: 18px 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.85rem;
  color: #94A3B8;
  display: flex;
  flex-direction: column;
  gap: 10px;
  background-color: rgba(0, 0, 0, 0.15);
  flex-shrink: 0;
}

/* ==========================================================================
   MAIN CONTENT SHELL
   ========================================================================== */
.admin-main {
  flex-grow: 1;
  height: 100vh;
  height: 100dvh;
  max-height: 100vh;
  display: flex;
  flex-direction: column;
  min-width: 0;
  overflow-y: auto;
  overflow-x: hidden;
  position: relative;
  scroll-behavior: smooth;
  scrollbar-width: thin;
  scrollbar-color: #CBD5E1 transparent;
}

.admin-main::-webkit-scrollbar {
  width: 8px;
}
.admin-main::-webkit-scrollbar-track {
  background: transparent;
}
.admin-main::-webkit-scrollbar-thumb {
  background: #CBD5E1;
  border-radius: 4px;
}
.admin-main::-webkit-scrollbar-thumb:hover {
  background: #94A3B8;
}

.admin-topbar {
  height: 72px;
  background-color: #FFFFFF;
  border-bottom: 1px solid var(--admin-border);
  padding: 0 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 40;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.02);
  flex-shrink: 0;
}

.admin-topbar h2 {
  font-size: 1.3rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--admin-text-main);
}

.admin-content {
  padding: 32px;
  flex-grow: 1;
}

/* ==========================================================================
   CARDS & STATS GRID
   ========================================================================== */
.admin-card {
  background-color: var(--admin-card-bg);
  border: 1px solid var(--admin-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--admin-shadow-card);
  margin-bottom: 24px;
}

.admin-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 22px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--admin-border-subtle);
}

.admin-stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  margin-bottom: 28px;
}

.admin-stat-card {
  background-color: #FFFFFF;
  border: 1px solid var(--admin-border);
  border-radius: var(--radius-lg);
  padding: 22px;
  display: flex;
  align-items: center;
  gap: 18px;
  box-shadow: var(--admin-shadow-card);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

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

.admin-stat-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.admin-stat-icon.gold { background: var(--admin-accent-light); color: var(--admin-accent); }
.admin-stat-icon.blue { background: var(--admin-info-light); color: var(--admin-info); }
.admin-stat-icon.green { background: var(--admin-success-light); color: var(--admin-success); }
.admin-stat-icon.red { background: var(--admin-danger-light); color: var(--admin-danger); }

.admin-stat-value {
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--admin-text-main);
  line-height: 1.1;
  font-family: var(--font-sans);
}

.admin-stat-label {
  font-size: 0.84rem;
  color: var(--admin-text-muted);
  font-weight: 600;
  margin-top: 4px;
}

/* ==========================================================================
   TABLES
   ========================================================================== */
.admin-table-wrap {
  overflow-x: auto;
  width: 100%;
  border-radius: var(--radius-md);
  border: 1px solid var(--admin-border-subtle);
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.92rem;
  background: #FFFFFF;
}

.admin-table th {
  background-color: #F8FAFC;
  color: #475569;
  font-weight: 700;
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 14px 18px;
  border-bottom: 2px solid var(--admin-border);
  white-space: nowrap;
}

.admin-table td {
  padding: 16px 18px;
  border-bottom: 1px solid var(--admin-border-subtle);
  vertical-align: middle;
  color: var(--admin-text-main);
}

.admin-table tr:hover td {
  background-color: rgba(248, 250, 252, 0.7);
}

/* ==========================================================================
   BADGES & PILLS
   ========================================================================== */
.admin-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.admin-badge.badge-new { background: var(--admin-accent-light); color: #0D4872; border: 1px solid var(--admin-accent-border); }
.admin-badge.badge-contacted { background: var(--admin-info-light); color: #0369A1; border: 1px solid #BAE6FD; }
.admin-badge.badge-enrolled { background: var(--admin-success-light); color: #047857; border: 1px solid #A7F3D0; }
.admin-badge.badge-archived { background: #F1F5F9; color: #64748B; border: 1px solid #E2E8F0; }

/* ==========================================================================
   BUTTONS
   ========================================================================== */
.admin-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 600;
  font-family: var(--font-sans);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.18s ease;
  line-height: 1.4;
}

.admin-btn-primary {
  background-color: var(--admin-sidebar-bg);
  color: #FFFFFF;
  box-shadow: var(--admin-shadow-sm);
}

.admin-btn-primary:hover {
  background-color: var(--admin-sidebar-hover);
  color: #FFFFFF;
  transform: translateY(-1px);
}

.admin-btn-accent {
  background: linear-gradient(135deg, var(--admin-accent) 0%, #0D4872 100%);
  color: #FFFFFF;
  box-shadow: 0 2px 8px rgba(20, 94, 145, 0.25);
}

.admin-btn-accent:hover {
  background: linear-gradient(135deg, #0D4872 0%, #083353 100%);
  color: #FFFFFF;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(20, 94, 145, 0.35);
}

.admin-btn-outline {
  background-color: #FFFFFF;
  border-color: var(--admin-border);
  color: var(--admin-text-main);
  box-shadow: var(--admin-shadow-sm);
}

.admin-btn-outline:hover {
  background-color: #F8FAFC;
  border-color: #CBD5E1;
  color: var(--admin-text-main);
}

.admin-btn-danger {
  background-color: var(--admin-danger-light);
  color: var(--admin-danger);
  border-color: rgba(239, 68, 68, 0.2);
}

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

.admin-btn-sm {
  padding: 7px 13px;
  font-size: 0.82rem;
  border-radius: var(--radius-sm);
}

/* ==========================================================================
   FORMS & INPUT CONTROLS
   ========================================================================== */
.admin-input, .admin-select, .admin-textarea {
  width: 100%;
  padding: 11px 15px;
  border: 1px solid var(--admin-border);
  border-radius: var(--radius-md);
  font-size: 0.92rem;
  font-family: var(--font-sans);
  outline: none;
  background-color: #FFFFFF;
  color: var(--admin-text-main);
  transition: all 0.2s ease;
  box-shadow: var(--admin-shadow-sm);
}

.admin-input:focus, .admin-select:focus, .admin-textarea:focus {
  border-color: var(--admin-accent);
  box-shadow: 0 0 0 3px rgba(20, 94, 145, 0.15);
}

.admin-input::placeholder, .admin-textarea::placeholder {
  color: #94A3B8;
}

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

.admin-form-group label {
  display: block;
  font-size: 0.88rem;
  font-weight: 700;
  margin-bottom: 7px;
  color: var(--admin-text-main);
}

.admin-form-hint {
  font-size: 0.78rem;
  color: var(--admin-text-muted);
  margin-top: 5px;
}

/* ==========================================================================
   ALERTS
   ========================================================================== */
.admin-alert {
  padding: 14px 18px;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  margin-bottom: 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: var(--admin-shadow-sm);
}

.admin-alert-success { 
  background: var(--admin-success-light); 
  color: #065F46; 
  border: 1px solid #A7F3D0; 
}

.admin-alert-danger { 
  background: var(--admin-danger-light); 
  color: #991B1B; 
  border: 1px solid #FECACA; 
}

/* ==========================================================================
   AUTHENTICATION & LOGIN PAGE
   ========================================================================== */
.admin-login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle at 100% 0%, rgba(254, 243, 199, 0.65) 0%, #F8FAFC 60%);
  padding: 24px;
}

.admin-login-card {
  width: 100%;
  max-width: 430px;
  background: #FFFFFF;
  border: 1px solid var(--admin-border);
  border-radius: var(--radius-xl);
  padding: 44px 38px;
  box-shadow: 0 20px 40px -15px rgba(10, 25, 47, 0.08);
}

.admin-login-brand {
  text-align: center;
  margin-bottom: 30px;
}

.admin-login-logo {
  width: 52px;
  height: 52px;
  background: var(--admin-sidebar-bg);
  color: #FFFFFF;
  border-radius: var(--radius-md);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.5rem;
  margin-bottom: 14px;
  border: 2px solid var(--admin-accent);
  box-shadow: 0 4px 14px rgba(10, 25, 47, 0.15);
}

.admin-login-brand h1 {
  font-size: 1.55rem;
  font-weight: 800;
  color: var(--admin-sidebar-bg);
  letter-spacing: -0.02em;
}

.admin-login-brand p {
  font-size: 0.88rem;
  color: var(--admin-text-muted);
  margin-top: 5px;
}

/* ==========================================================================
   RESPONSIVE ADJUSTMENTS
   ========================================================================== */
@media (max-width: 960px) {
  body.admin-body {
    flex-direction: column;
    height: auto;
    overflow: auto;
  }
  .admin-sidebar {
    width: 100%;
    height: auto;
    max-height: none;
    min-height: auto;
    position: static;
    overflow: visible;
  }
  .admin-main {
    height: auto;
    max-height: none;
    overflow: visible;
  }
  .admin-topbar {
    padding: 0 20px;
    position: static;
  }
  .admin-content {
    padding: 20px 16px;
  }
}