/* ==========================================================================
   Windows Device Activation System - Admin Dashboard Styling
   Modern, Responsive, Dark/Light Theme Design System
   ========================================================================== */

:root {
  --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;

  /* Color Palette - Dark Theme Default */
  --bg-primary: #0b0f19;
  --bg-secondary: #121927;
  --bg-tertiary: #1b2438;
  --bg-card: rgba(18, 25, 39, 0.85);
  --bg-card-hover: rgba(27, 36, 56, 0.95);
  
  --border-color: rgba(255, 255, 255, 0.08);
  --border-focus: #3b82f6;

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  /* Accent & Status Colors */
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --accent-glow: rgba(37, 99, 235, 0.35);

  --status-pending: #f59e0b;
  --status-pending-bg: rgba(245, 158, 11, 0.15);
  --status-approved: #10b981;
  --status-approved-bg: rgba(16, 185, 129, 0.15);
  --status-rejected: #ef4444;
  --status-rejected-bg: rgba(239, 68, 68, 0.15);
  --status-revoked: #f97316;
  --status-revoked-bg: rgba(249, 115, 22, 0.15);
  --status-blocked: #6b7280;
  --status-blocked-bg: rgba(107, 114, 128, 0.2);

  --online-pulse: #10b981;
  --offline-warning: #f59e0b;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 12px 28px rgba(0, 0, 0, 0.5);

  --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="light"] {
  --bg-primary: #f1f5f9;
  --bg-secondary: #ffffff;
  --bg-tertiary: #e2e8f0;
  --bg-card: rgba(255, 255, 255, 0.95);
  --bg-card-hover: #ffffff;

  --border-color: rgba(0, 0, 0, 0.08);
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 14px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 12px 30px rgba(0, 0, 0, 0.12);
}

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

body {
  font-family: var(--font-main);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

/* Glassmorphism Background Accent */
body::before {
  content: "";
  position: fixed;
  top: -150px;
  left: 20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.12) 0%, rgba(0,0,0,0) 70%);
  pointer-events: none;
  z-index: 0;
}

/* Layout Container */
.app-container {
  display: flex;
  min-height: 100vh;
  position: relative;
  z-index: 1;
}

/* Sidebar */
.sidebar {
  width: 260px;
  background-color: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  padding: 24px 16px;
  flex-shrink: 0;
  transition: var(--transition);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 32px;
  padding: 0 8px;
}

.brand-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, #2563eb, #60a5fa);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 18px;
  box-shadow: 0 4px 12px var(--accent-glow);
}

.brand-title {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.brand-subtitle {
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.nav-menu {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex: 1;
}

.nav-item button {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition);
  text-align: left;
}

.nav-item button:hover {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
}

.nav-item button.active {
  background: var(--accent);
  color: #ffffff;
  box-shadow: 0 4px 12px var(--accent-glow);
}

.sidebar-footer {
  padding-top: 16px;
  border-top: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.user-badge {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 8px;
  border-radius: var(--radius-sm);
  background-color: var(--bg-tertiary);
}

.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  background: #334155;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 13px;
  color: #cbd5e1;
}

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

.user-name {
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.user-role {
  font-size: 11px;
  color: var(--text-muted);
}

/* Main Content Area */
.main-wrapper {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  overflow-y: auto;
}

.top-bar {
  height: 68px;
  border-bottom: 1px solid var(--border-color);
  background-color: var(--bg-secondary);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 32px;
  position: sticky;
  top: 0;
  z-index: 10;
}

.page-title-box h1 {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.page-title-box p {
  font-size: 12px;
  color: var(--text-muted);
}

.top-bar-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.btn-icon {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.btn-icon:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.btn-logout {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 6px;
}

.btn-logout:hover {
  background: rgba(239, 68, 68, 0.1);
  color: #ef4444;
  border-color: #ef4444;
}

/* Page Content */
.content-body {
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* Metrics Overview Grid */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 16px;
}

.metric-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.metric-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: rgba(255, 255, 255, 0.15);
}

.metric-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.metric-title {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
}

.metric-value {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
}

.metric-sub {
  font-size: 11px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 6px;
}

/* Metric color themes */
.metric-card.total { border-top: 3px solid #3b82f6; }
.metric-card.pending { border-top: 3px solid var(--status-pending); }
.metric-card.approved { border-top: 3px solid var(--status-approved); }
.metric-card.rejected { border-top: 3px solid var(--status-rejected); }
.metric-card.revoked { border-top: 3px solid var(--status-revoked); }
.metric-card.blocked { border-top: 3px solid var(--status-blocked); }
.metric-card.online { border-top: 3px solid var(--online-pulse); }
.metric-card.warning { border-top: 3px solid var(--offline-warning); }

/* Live Pulsing Dot */
.live-pulse {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: var(--radius-full);
  background-color: var(--online-pulse);
  position: relative;
}

.live-pulse::after {
  content: "";
  position: absolute;
  top: -2px;
  left: -2px;
  width: 12px;
  height: 12px;
  border-radius: var(--radius-full);
  background-color: var(--online-pulse);
  opacity: 0.6;
  animation: pulse-animation 1.8s infinite cubic-bezier(0.4, 0, 0.6, 1);
}

@keyframes pulse-animation {
  0% { transform: scale(0.9); opacity: 0.8; }
  50% { transform: scale(1.8); opacity: 0; }
  100% { transform: scale(0.9); opacity: 0; }
}

/* Device Management Table Section */
.card-table {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.table-toolbar {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.toolbar-left {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 1;
  min-width: 280px;
}

.search-input {
  width: 100%;
  max-width: 320px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  outline: none;
  transition: var(--transition);
}

.search-input:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 2px var(--accent-glow);
}

.filter-select {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  outline: none;
  cursor: pointer;
}

.toolbar-right {
  display: flex;
  align-items: center;
  gap: 10px;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 6px;
}

.btn-primary:hover {
  background: var(--accent-hover);
  box-shadow: 0 4px 12px var(--accent-glow);
}

/* Data Table */
.table-responsive {
  width: 100%;
  overflow-x: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 13px;
}

.data-table th {
  background: var(--bg-tertiary);
  padding: 12px 18px;
  font-weight: 600;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-color);
  white-space: nowrap;
}

.data-table td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-primary);
  vertical-align: middle;
}

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

.data-table tbody tr:hover {
  background: var(--bg-card-hover);
}

/* Status Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.badge-pending {
  background-color: var(--status-pending-bg);
  color: var(--status-pending);
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.badge-approved {
  background-color: var(--status-approved-bg);
  color: var(--status-approved);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge-rejected {
  background-color: var(--status-rejected-bg);
  color: var(--status-rejected);
  border: 1px solid rgba(239, 68, 68, 0.3);
}

.badge-revoked {
  background-color: var(--status-revoked-bg);
  color: var(--status-revoked);
  border: 1px solid rgba(249, 115, 22, 0.3);
}

.badge-blocked {
  background-color: var(--status-blocked-bg);
  color: #94a3b8;
  border: 1px solid rgba(107, 114, 128, 0.4);
}

/* Device Identifier Pill with Copy */
.uuid-pill {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-secondary);
  background: var(--bg-tertiary);
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.btn-copy {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 11px;
  padding: 2px 4px;
  border-radius: 3px;
  transition: var(--transition);
}

.btn-copy:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.1);
}

/* Action Button Group */
.action-buttons {
  display: flex;
  align-items: center;
  gap: 6px;
}

.btn-action {
  padding: 5px 10px;
  border-radius: var(--radius-sm);
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  transition: var(--transition);
}

.btn-action-approve {
  background: rgba(16, 185, 129, 0.15);
  color: #10b981;
  border-color: rgba(16, 185, 129, 0.3);
}

.btn-action-approve:hover {
  background: #10b981;
  color: #fff;
}

.btn-action-reject {
  background: rgba(239, 68, 68, 0.12);
  color: #ef4444;
  border-color: rgba(239, 68, 68, 0.3);
}

.btn-action-reject:hover {
  background: #ef4444;
  color: #fff;
}

.btn-action-revoke {
  background: rgba(249, 115, 22, 0.12);
  color: #f97316;
  border-color: rgba(249, 115, 22, 0.3);
}

.btn-action-revoke:hover {
  background: #f97316;
  color: #fff;
}

.btn-action-block {
  background: rgba(107, 114, 128, 0.15);
  color: #94a3b8;
  border-color: rgba(107, 114, 128, 0.3);
}

.btn-action-block:hover {
  background: #475569;
  color: #fff;
}

.btn-action-details {
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  border-color: var(--border-color);
}

.btn-action-details:hover {
  color: var(--text-primary);
  border-color: var(--accent);
}

/* Modals & Dialogs */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-content {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 620px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
}

.modal-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: 16px;
  font-weight: 700;
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 20px;
  cursor: pointer;
  transition: var(--transition);
}

.modal-close:hover {
  color: var(--text-primary);
}

.modal-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 12px;
}

/* Timeline component */
.timeline {
  display: flex;
  flex-direction: column;
  gap: 14px;
  border-left: 2px solid var(--border-color);
  padding-left: 16px;
  margin-top: 8px;
}

.timeline-item {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: -21px;
  top: 4px;
  width: 8px;
  height: 8px;
  border-radius: var(--radius-full);
  background: var(--accent);
}

.timeline-title {
  font-size: 12px;
  font-weight: 600;
}

.timeline-meta {
  font-size: 11px;
  color: var(--text-muted);
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 200;
}

.toast {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 12px 18px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  animation: slide-in 0.3s ease;
  min-width: 280px;
}

.toast.success { border-left: 4px solid var(--status-approved); }
.toast.error { border-left: 4px solid var(--status-rejected); }
.toast.info { border-left: 4px solid var(--accent); }

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

/* Login Card Overlay */
.login-view {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 20px;
}

.login-card {
  width: 100%;
  max-width: 400px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(12px);
}

.login-header {
  text-align: center;
  margin-bottom: 28px;
}

.login-header .brand-icon {
  margin: 0 auto 16px;
  width: 48px;
  height: 48px;
  font-size: 22px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 18px;
}

.form-group label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
}

.form-input {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  outline: none;
  transition: var(--transition);
}

.form-input:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 2px var(--accent-glow);
}

/* Responsive Breakpoints */
@media (max-width: 900px) {
  .app-container {
    flex-direction: column;
  }
  .sidebar {
    width: 100%;
    border-right: none;
    border-bottom: 1px solid var(--border-color);
  }
  .top-bar {
    padding: 0 16px;
  }
  .content-body {
    padding: 16px;
  }
}