/* ==========================================================================
   KRU ARM TECH - ADMIN MANAGEMENT PORTAL STYLESHEET
   Design: Refined Sci-Fi Dark Cyber & Glassmorphism Executive Console
   ========================================================================== */

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

:root {
  --admin-bg: #070a12;
  --admin-sidebar-bg: rgba(11, 17, 30, 0.95);
  --admin-header-bg: rgba(13, 20, 36, 0.85);
  --admin-card-bg: rgba(16, 25, 45, 0.7);
  --admin-card-border: 1px solid rgba(255, 255, 255, 0.08);
  --admin-card-hover: rgba(22, 34, 60, 0.85);
  
  --admin-blue: #3b82f6;
  --admin-cyan: #06b6d4;
  --admin-indigo: #6366f1;
  --admin-purple: #8b5cf6;
  --admin-emerald: #10b981;
  --admin-amber: #f59e0b;
  --admin-rose: #f43f5e;
  
  --admin-text-main: #f8fafc;
  --admin-text-muted: #94a3b8;
  --admin-text-dim: #64748b;
  
  --admin-sidebar-width: 260px;
  --admin-header-height: 70px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  --transition-smooth: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body.admin-body {
  font-family: 'Prompt', 'Kanit', sans-serif;
  background-color: var(--admin-bg);
  color: var(--admin-text-main);
  min-height: 100vh;
  display: flex;
  overflow-x: hidden;
  position: relative;
}

/* Background Cyber Grid */
body.admin-body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    linear-gradient(to right, rgba(59, 130, 246, 0.02) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(59, 130, 246, 0.02) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  z-index: 0;
}

/* Ambient glow */
.admin-glow-sphere {
  position: fixed;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
  opacity: 0.15;
  z-index: 0;
}
.glow-1 { top: -100px; right: -100px; background: var(--admin-blue); }
.glow-2 { bottom: -150px; left: 100px; background: var(--admin-indigo); }

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Kanit', sans-serif;
  font-weight: 600;
  color: #ffffff;
}

.font-code {
  font-family: 'JetBrains Mono', monospace;
}

/* Layout */
.admin-sidebar {
  width: var(--admin-sidebar-width);
  height: 100vh;
  background: var(--admin-sidebar-bg);
  backdrop-filter: blur(16px);
  border-right: var(--admin-card-border);
  position: fixed;
  top: 0;
  left: 0;
  z-index: 100;
  display: flex;
  flex-direction: column;
  transition: var(--transition-smooth);
}

.admin-sidebar-header {
  height: var(--admin-header-height);
  padding: 0 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: var(--admin-card-border);
}

.admin-brand-icon {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--admin-blue), var(--admin-indigo));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: #fff;
  box-shadow: 0 0 15px rgba(59, 130, 246, 0.4);
}

.admin-brand-text .title {
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.5px;
  color: #fff;
}
.admin-brand-text .badge {
  font-size: 0.65rem;
  font-family: 'JetBrains Mono', monospace;
  background: rgba(6, 182, 212, 0.15);
  color: var(--admin-cyan);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(6, 182, 212, 0.3);
}

.admin-sidebar-menu {
  flex: 1;
  padding: 20px 12px;
  overflow-y: auto;
  list-style: none;
}

.menu-category {
  font-size: 0.72rem;
  font-family: 'JetBrains Mono', monospace;
  color: var(--admin-text-dim);
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 12px 14px 6px;
}

.admin-nav-item {
  margin-bottom: 4px;
}

.admin-nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 16px;
  color: var(--admin-text-muted);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: var(--transition-smooth);
  border: 1px solid transparent;
}

.admin-nav-link i {
  font-size: 1.1rem;
  width: 22px;
  text-align: center;
  transition: var(--transition-smooth);
}

.admin-nav-link:hover {
  background: rgba(59, 130, 246, 0.1);
  color: #fff;
  border-color: rgba(59, 130, 246, 0.2);
}

.admin-nav-link.active {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.2) 0%, rgba(99, 102, 241, 0.15) 100%);
  color: #fff;
  border-color: rgba(59, 130, 246, 0.4);
  box-shadow: 0 4px 15px rgba(59, 130, 246, 0.15);
}
.admin-nav-link.active i {
  color: var(--admin-cyan);
}

.admin-sidebar-footer {
  padding: 16px;
  border-top: var(--admin-card-border);
  background: rgba(9, 13, 22, 0.5);
}

.admin-user-card {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.admin-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--admin-blue), var(--admin-purple));
  padding: 2px;
  flex-shrink: 0;
}
.admin-avatar img {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
}

.admin-user-info {
  overflow: hidden;
}
.admin-user-info .name {
  font-size: 0.88rem;
  font-weight: 600;
  color: #fff;
  white-space: nowrap;
  text-overflow: ellipsis;
  overflow: hidden;
}
.admin-user-info .role {
  font-size: 0.72rem;
  color: var(--admin-cyan);
  font-family: 'JetBrains Mono', monospace;
}

/* Main Area */
.admin-main {
  margin-left: var(--admin-sidebar-width);
  flex: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
  z-index: 10;
  width: calc(100% - var(--admin-sidebar-width));
}

.admin-header {
  height: var(--admin-header-height);
  background: var(--admin-header-bg);
  backdrop-filter: blur(16px);
  border-bottom: var(--admin-card-border);
  position: sticky;
  top: 0;
  z-index: 90;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 30px;
}

.admin-header-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.sidebar-toggle-btn {
  display: none;
  background: none;
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--admin-text-main);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.admin-header-title {
  font-size: 1.15rem;
  font-weight: 600;
  color: #fff;
}

.admin-header-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.admin-content {
  padding: 30px;
  flex: 1;
}

/* Cards */
.admin-card {
  background: var(--admin-card-bg);
  backdrop-filter: blur(12px);
  border: var(--admin-card-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 24px;
  transition: var(--transition-smooth);
}

.admin-card:hover {
  border-color: rgba(59, 130, 246, 0.25);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.admin-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: var(--admin-card-border);
}

.admin-card-title {
  font-size: 1.15rem;
  font-weight: 600;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 10px;
}

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

.stat-card {
  background: var(--admin-card-bg);
  backdrop-filter: blur(12px);
  border: var(--admin-card-border);
  border-radius: var(--radius-lg);
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  position: relative;
  overflow: hidden;
  transition: var(--transition-smooth);
}

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

.stat-card.stat-indigo::before { background: var(--admin-indigo); }
.stat-card.stat-cyan::before { background: var(--admin-cyan); }
.stat-card.stat-emerald::before { background: var(--admin-emerald); }
.stat-card.stat-purple::before { background: var(--admin-purple); }

.stat-card:hover {
  transform: translateY(-3px);
  border-color: rgba(59, 130, 246, 0.3);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
}

.stat-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  background: rgba(59, 130, 246, 0.12);
  color: var(--admin-blue);
  flex-shrink: 0;
}
.stat-indigo .stat-icon { background: rgba(99, 102, 241, 0.12); color: var(--admin-indigo); }
.stat-cyan .stat-icon { background: rgba(6, 182, 212, 0.12); color: var(--admin-cyan); }
.stat-emerald .stat-icon { background: rgba(16, 185, 129, 0.12); color: var(--admin-emerald); }
.stat-purple .stat-icon { background: rgba(139, 92, 246, 0.12); color: var(--admin-purple); }

.stat-info .stat-value {
  font-size: 1.8rem;
  font-weight: 700;
  font-family: 'JetBrains Mono', monospace;
  color: #fff;
  line-height: 1.1;
}
.stat-info .stat-label {
  font-size: 0.85rem;
  color: var(--admin-text-muted);
  margin-top: 4px;
}

/* Data Tables */
.admin-table-container {
  width: 100%;
  overflow-x: auto;
}

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

.admin-table th {
  background: rgba(9, 13, 22, 0.6);
  padding: 14px 16px;
  font-weight: 600;
  color: var(--admin-text-muted);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  white-space: nowrap;
}

.admin-table td {
  padding: 14px 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  color: var(--admin-text-main);
  vertical-align: middle;
}

.admin-table tbody tr {
  transition: var(--transition-smooth);
}

.admin-table tbody tr:hover {
  background: rgba(59, 130, 246, 0.05);
}

/* Badges & Tags */
.badge-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: 0.76rem;
  font-weight: 500;
}

.badge-blue { background: rgba(59, 130, 246, 0.15); color: #60a5fa; border: 1px solid rgba(59, 130, 246, 0.3); }
.badge-indigo { background: rgba(99, 102, 241, 0.15); color: #818cf8; border: 1px solid rgba(99, 102, 241, 0.3); }
.badge-cyan { background: rgba(6, 182, 212, 0.15); color: #22d3ee; border: 1px solid rgba(6, 182, 212, 0.3); }
.badge-emerald { background: rgba(16, 185, 129, 0.15); color: #34d399; border: 1px solid rgba(16, 185, 129, 0.3); }
.badge-amber { background: rgba(245, 158, 11, 0.15); color: #fbbf24; border: 1px solid rgba(245, 158, 11, 0.3); }
.badge-rose { background: rgba(244, 63, 94, 0.15); color: #fb7185; border: 1px solid rgba(244, 63, 94, 0.3); }

/* File Types */
.file-badge {
  font-family: 'JetBrains Mono', monospace;
  font-weight: 700;
  font-size: 0.72rem;
  padding: 3px 8px;
  border-radius: 4px;
  text-transform: uppercase;
}
.file-pdf { background: rgba(239, 68, 68, 0.2); color: #f87171; border: 1px solid rgba(239, 68, 68, 0.3); }
.file-doc, .file-docx { background: rgba(59, 130, 246, 0.2); color: #60a5fa; border: 1px solid rgba(59, 130, 246, 0.3); }
.file-ppt, .file-pptx { background: rgba(249, 115, 22, 0.2); color: #fb923c; border: 1px solid rgba(249, 115, 22, 0.3); }
.file-zip, .file-rar { background: rgba(168, 85, 247, 0.2); color: #c084fc; border: 1px solid rgba(168, 85, 247, 0.3); }
.file-py, .file-code, .file-ino, .file-cpp { background: rgba(16, 185, 129, 0.2); color: #34d399; border: 1px solid rgba(16, 185, 129, 0.3); }
.file-other { background: rgba(148, 163, 184, 0.2); color: #cbd5e1; border: 1px solid rgba(148, 163, 184, 0.3); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 9px 18px;
  font-family: 'Prompt', sans-serif;
  font-size: 0.92rem;
  font-weight: 500;
  border-radius: var(--radius-md);
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition-smooth);
  border: 1px solid transparent;
}

.btn-sm {
  padding: 6px 12px;
  font-size: 0.82rem;
}

.btn-primary {
  background: linear-gradient(135deg, var(--admin-blue), var(--admin-indigo));
  color: #fff;
  box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}
.btn-primary:hover {
  box-shadow: 0 6px 20px rgba(59, 130, 246, 0.5);
  transform: translateY(-1px);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  color: var(--admin-text-main);
  border-color: rgba(255, 255, 255, 0.1);
}
.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
}

.btn-emerald {
  background: linear-gradient(135deg, #059669, var(--admin-emerald));
  color: #fff;
  box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
}
.btn-emerald:hover {
  box-shadow: 0 6px 20px rgba(16, 185, 129, 0.5);
  transform: translateY(-1px);
}

.btn-danger {
  background: rgba(244, 63, 94, 0.15);
  color: #fb7185;
  border: 1px solid rgba(244, 63, 94, 0.3);
}
.btn-danger:hover {
  background: rgba(244, 63, 94, 0.3);
  color: #fff;
}

/* Forms */
.form-group {
  margin-bottom: 18px;
}

.form-label {
  display: block;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--admin-text-muted);
  margin-bottom: 6px;
}

.form-control {
  width: 100%;
  padding: 10px 14px;
  background: rgba(9, 13, 22, 0.8);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-md);
  color: #fff;
  font-family: inherit;
  font-size: 0.92rem;
  transition: var(--transition-smooth);
}

.form-control:focus {
  outline: none;
  border-color: var(--admin-blue);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

textarea.form-control {
  resize: vertical;
  min-height: 80px;
}

/* Filter Nav / Tabs */
.filter-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.filter-tab {
  padding: 8px 16px;
  background: rgba(16, 25, 45, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  color: var(--admin-text-muted);
  text-decoration: none;
  font-size: 0.88rem;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.filter-tab:hover, .filter-tab.active {
  background: rgba(59, 130, 246, 0.15);
  color: #fff;
  border-color: rgba(59, 130, 246, 0.4);
}

/* Modals */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(4, 7, 14, 0.8);
  backdrop-filter: blur(10px);
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

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

.modal-dialog {
  background: #0d1424;
  border: 1px solid rgba(59, 130, 246, 0.3);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 650px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.7);
  animation: modalFadeIn 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes modalFadeIn {
  from { opacity: 0; transform: scale(0.96) translateY(10px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

.modal-header {
  padding: 18px 24px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: 1.15rem;
  font-weight: 600;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 10px;
}

.modal-close {
  background: none;
  border: none;
  color: var(--admin-text-muted);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 4px;
  line-height: 1;
  transition: var(--transition-smooth);
}
.modal-close:hover { color: #fff; }

.modal-body {
  padding: 24px;
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.toast {
  background: #111a2e;
  border: 1px solid rgba(59, 130, 246, 0.3);
  color: #fff;
  padding: 14px 20px;
  border-radius: var(--radius-md);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.92rem;
  animation: toastSlideIn 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes toastSlideIn {
  from { opacity: 0; transform: translateX(30px); }
  to { opacity: 1; transform: translateX(0); }
}

/* Responsive */
@media (max-width: 992px) {
  .admin-sidebar {
    transform: translateX(-100%);
  }
  .admin-sidebar.show {
    transform: translateX(0);
  }
  .admin-main {
    margin-left: 0;
    width: 100%;
  }
  .sidebar-toggle-btn {
    display: inline-flex;
  }
}