/* ZKTeco SenseFace 4A - Modern Light Theme Design System */
:root {
  --zk-bg: #f8fafc;
  --zk-surface: #ffffff;
  --zk-surface-subtle: #f1f5f9;
  --zk-surface-alt: #f8fafc;
  --zk-border: #e2e8f0;
  --zk-border-strong: #cbd5e1;
  --zk-text-main: #0f172a;
  --zk-text-muted: #64748b;
  --zk-text-light: #94a3b8;
  
  --zk-primary: #2563eb;
  --zk-primary-hover: #1d4ed8;
  --zk-primary-subtle: #eff6ff;
  --zk-primary-border: #bfdbfe;
  
  --zk-success: #10b981;
  --zk-success-subtle: #ecfdf5;
  --zk-success-border: #a7f3d0;
  --zk-success-text: #065f46;
  
  --zk-warning: #f59e0b;
  --zk-warning-subtle: #fffbeb;
  --zk-warning-border: #fde68a;
  --zk-warning-text: #92400e;
  
  --zk-purple: #8b5cf6;
  --zk-purple-subtle: #f5f3ff;
  --zk-purple-border: #ddd6fe;
  --zk-purple-text: #5b21b6;
  
  --zk-danger: #ef4444;
  --zk-danger-subtle: #fef2f2;
  --zk-danger-border: #fecaca;
  --zk-danger-text: #991b1b;

  --zk-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --zk-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.08), 0 1px 2px -1px rgba(0, 0, 0, 0.05);
  --zk-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.04);
  --zk-radius: 10px;
  --zk-radius-sm: 6px;
}

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

body.zk-page {
  background-color: var(--zk-bg);
  color: var(--zk-text-main);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.5;
  padding: 24px 20px;
  -webkit-font-smoothing: antialiased;
}

.zk-dashboard {
  max-width: 1400px;
  margin: 0 auto;
}

/* Header */
.zk-dashboard__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  background: var(--zk-surface);
  border: 1px solid var(--zk-border);
  border-radius: var(--zk-radius);
  padding: 20px 24px;
  margin-bottom: 20px;
  box-shadow: var(--zk-shadow-sm);
}

.zk-dashboard__brand {
  display: flex;
  flex-direction: column;
}

.zk-dashboard__badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--zk-primary-subtle);
  color: var(--zk-primary);
  border: 1px solid var(--zk-primary-border);
  font-size: 11px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 20px;
  width: fit-content;
  margin-bottom: 6px;
  letter-spacing: 0.3px;
}

.zk-dashboard__title {
  font-size: 22px;
  font-weight: 800;
  color: var(--zk-text-main);
  letter-spacing: -0.3px;
}

.zk-dashboard__subtitle {
  font-size: 13px;
  color: var(--zk-text-muted);
  margin-top: 2px;
}

.zk-dashboard__auth {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.zk-dashboard__label {
  font-size: 13px;
  font-weight: 600;
  color: var(--zk-text-muted);
}

.zk-dashboard__input {
  background: #ffffff;
  color: var(--zk-text-main);
  border: 1px solid var(--zk-border);
  border-radius: var(--zk-radius-sm);
  padding: 8px 14px;
  font-size: 13px;
  outline: none;
  transition: all 0.15s ease;
}

.zk-dashboard__input:focus {
  border-color: var(--zk-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

/* Buttons */
button,
.zk-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid transparent;
  border-radius: var(--zk-radius-sm);
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.18s ease, color 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease, transform 0.1s ease;
  line-height: 1.4;
  outline: none;
}

.zk-btn--primary {
  background: var(--zk-primary);
  color: #ffffff;
  border-color: var(--zk-primary);
}

.zk-btn--live-on {
  background: #ecfdf5;
  color: #065f46;
  border-color: #a7f3d0;
}

.zk-btn--live-off {
  background: #f1f5f9;
  color: #64748b;
  border-color: #cbd5e1;
}

.zk-btn--secondary {
  background: #f8fafc;
  color: var(--zk-text-main);
  border-color: var(--zk-border-strong);
}

/* Hover, Active & Click-selected States: Nền xanh - Chữ trắng */
button:hover,
button:active,
button:focus-visible,
.zk-btn:hover,
.zk-btn:active,
.zk-btn:focus-visible,
.zk-btn--active {
  background: var(--zk-primary) !important;
  color: #ffffff !important;
  border-color: var(--zk-primary) !important;
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.35) !important;
}

button:hover *,
button:active *,
.zk-btn:hover *,
.zk-btn:active *,
.zk-btn--active * {
  color: #ffffff !important;
}

button:active,
.zk-btn:active {
  transform: scale(0.98);
}

/* Live Pulse Dot */
.zk-pulse {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #10b981;
  box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
  animation: zk-pulse-anim 1.5s infinite;
}

@keyframes zk-pulse-anim {
  0% {
    transform: scale(0.95);
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
  }
  70% {
    transform: scale(1);
    box-shadow: 0 0 0 6px rgba(16, 185, 129, 0);
  }
  100% {
    transform: scale(0.95);
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0);
  }
}

/* Real Hardware Monitor Banner */
.zk-hw-banner {
  background: linear-gradient(135deg, #ffffff 0%, #f0fdf4 100%);
  border: 1px solid #bbf7d0;
  border-radius: var(--zk-radius);
  padding: 16px 22px;
  margin-bottom: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  box-shadow: var(--zk-shadow-sm);
}

.zk-hw-banner__left {
  display: flex;
  align-items: center;
  gap: 14px;
}

.zk-hw-banner__icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: #dcfce7;
  color: #15803d;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
}

.zk-hw-banner__details {
  display: flex;
  flex-direction: column;
}

.zk-hw-banner__title {
  font-size: 15px;
  font-weight: 700;
  color: #14532d;
  display: flex;
  align-items: center;
  gap: 8px;
}

.zk-hw-banner__desc {
  font-size: 13px;
  color: #166534;
  margin-top: 2px;
}

.zk-hw-banner__right {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 13px;
}

.zk-hw-banner__stat {
  display: flex;
  flex-direction: column;
  text-align: right;
}

.zk-hw-banner__stat-val {
  font-weight: 700;
  color: #14532d;
}

.zk-hw-banner__stat-lbl {
  font-size: 11px;
  color: #166534;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

/* Quick Stat Cards */
.zk-stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin-bottom: 20px;
}

.zk-stat-card {
  background: var(--zk-surface);
  border: 1px solid var(--zk-border);
  border-radius: var(--zk-radius);
  padding: 18px 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  box-shadow: var(--zk-shadow-sm);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.zk-stat-card:hover {
  transform: translateY(-1px);
  box-shadow: var(--zk-shadow);
}

.zk-stat-card__icon {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
}

.zk-stat-card__icon--blue {
  background: var(--zk-primary-subtle);
  color: var(--zk-primary);
}
.zk-stat-card__icon--green {
  background: var(--zk-success-subtle);
  color: var(--zk-success);
}
.zk-stat-card__icon--purple {
  background: var(--zk-purple-subtle);
  color: var(--zk-purple);
}
.zk-stat-card__icon--amber {
  background: var(--zk-warning-subtle);
  color: var(--zk-warning);
}

.zk-stat-card__content {
  display: flex;
  flex-direction: column;
}

.zk-stat-card__value {
  font-size: 24px;
  font-weight: 800;
  color: var(--zk-text-main);
  line-height: 1.2;
}

.zk-stat-card__label {
  font-size: 13px;
  color: var(--zk-text-muted);
  font-weight: 500;
  margin-top: 2px;
}

/* Alert Banner */
.zk-alert {
  padding: 12px 18px;
  border-radius: var(--zk-radius-sm);
  margin-bottom: 20px;
  font-size: 13px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 10px;
  box-shadow: var(--zk-shadow-sm);
}

.zk-alert--ok {
  background: var(--zk-success-subtle);
  border: 1px solid var(--zk-success-border);
  color: var(--zk-success-text);
}

.zk-alert--err {
  background: var(--zk-danger-subtle);
  border: 1px solid var(--zk-danger-border);
  color: var(--zk-danger-text);
}

/* Navigation Tabs */
.zk-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--zk-border);
  padding-bottom: 12px;
  overflow-x: auto;
}

.zk-tabs__item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #ffffff;
  color: var(--zk-text-muted);
  border: 1px solid var(--zk-border);
  border-radius: var(--zk-radius-sm);
  padding: 9px 18px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.18s ease, color 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease, transform 0.1s ease;
  white-space: nowrap;
  outline: none;
}

.zk-tabs__item:hover,
.zk-tabs__item:active,
.zk-tabs__item:focus-visible,
.zk-tabs__item--active {
  background: var(--zk-primary) !important;
  color: #ffffff !important;
  border-color: var(--zk-primary) !important;
  box-shadow: 0 2px 6px rgba(37, 99, 235, 0.3) !important;
}

.zk-tabs__item:hover *,
.zk-tabs__item:active *,
.zk-tabs__item--active * {
  color: #ffffff !important;
}

.zk-tabs__item:active {
  transform: scale(0.98);
}

.zk-tabs__count {
  background: #f1f5f9;
  color: var(--zk-text-secondary);
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 700;
  transition: background-color 0.18s ease, color 0.18s ease;
}

.zk-tabs__item:hover .zk-tabs__count,
.zk-tabs__item:active .zk-tabs__count,
.zk-tabs__item--active .zk-tabs__count {
  background: rgba(255, 255, 255, 0.28) !important;
  color: #ffffff !important;
}

/* Card Panel */
.zk-card {
  background: var(--zk-surface);
  border: 1px solid var(--zk-border);
  border-radius: var(--zk-radius);
  padding: 22px 24px;
  box-shadow: var(--zk-shadow-sm);
}

.zk-card__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--zk-surface-subtle);
}

.zk-card__title {
  font-size: 17px;
  font-weight: 700;
  color: var(--zk-text-main);
}

.zk-card__subtitle {
  font-size: 14px;
  font-weight: 600;
  margin: 18px 0 12px;
  color: var(--zk-text-secondary);
}

.zk-card__meta {
  font-size: 13px;
  color: var(--zk-text-muted);
}

/* Tables */
.zk-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--zk-border);
  border-radius: var(--zk-radius-sm);
}

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

.zk-table th {
  background: #f8fafc;
  color: var(--zk-text-secondary);
  font-weight: 700;
  padding: 12px 14px;
  border-bottom: 1px solid var(--zk-border);
  white-space: nowrap;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.zk-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--zk-border);
  color: var(--zk-text-main);
  background: #ffffff;
}

.zk-table tbody tr:hover td {
  background: #f8fafc;
}

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

.zk-table__mono {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  font-size: 12px;
  color: var(--zk-text-secondary);
}

.zk-table__code {
  max-width: 360px;
  white-space: pre-wrap;
  word-break: break-all;
  font-size: 11px;
}

.zk-table__empty {
  text-align: center;
  color: var(--zk-text-muted);
  font-size: 14px;
}

/* Tags & Badges */
.zk-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 9px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 700;
  background: #f1f5f9;
  color: var(--zk-text-secondary);
  white-space: nowrap;
}

.zk-tag--face {
  background: #ecfdf5;
  color: #047857;
  border: 1px solid #a7f3d0;
}

.zk-tag--finger {
  background: #f5f3ff;
  color: #6d28d9;
  border: 1px solid #ddd6fe;
}

.zk-tag--realtime {
  background: #eff6ff;
  color: #1d4ed8;
  border: 1px solid #bfdbfe;
}

.zk-tag--late {
  background: #fffbeb;
  color: #b45309;
  border: 1px solid #fde68a;
}

.zk-tag--ok {
  background: #ecfdf5;
  color: #047857;
  border: 1px solid #a7f3d0;
}

.zk-tag--err {
  background: #fef2f2;
  color: #b91c1c;
  border: 1px solid #fecaca;
}

.zk-tag--warn {
  background: #fffbeb;
  color: #b45309;
  border: 1px solid #fde68a;
}

/* Form */
.zk-form {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 20px;
  background: #f8fafc;
  padding: 16px;
  border-radius: var(--zk-radius-sm);
  border: 1px solid var(--zk-border);
}

.zk-form .zk-dashboard__input {
  flex: 1;
  min-width: 180px;
}

/* Responsive */
@media (max-width: 768px) {
  body.zk-page {
    padding: 12px 10px;
  }
  .zk-dashboard__header {
    padding: 16px;
  }
  .zk-hw-banner {
    flex-direction: column;
    align-items: flex-start;
  }
  .zk-hw-banner__right {
    width: 100%;
    justify-content: space-between;
  }
  .zk-hw-banner__stat {
    text-align: left;
  }
}

/* User Account Chip & Header Auth */
.zk-header-user {
  display: flex;
  align-items: center;
  gap: 10px;
}

.zk-user-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--zk-surface-subtle);
  border: 1px solid var(--zk-border);
  padding: 6px 12px;
  border-radius: var(--zk-radius-sm);
  font-size: 13px;
  font-weight: 600;
  color: var(--zk-text-main);
}

.zk-user-badge__icon {
  width: 20px;
  height: 20px;
  background: var(--zk-primary-subtle);
  color: var(--zk-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
}

/* Login Screen Component */
.zk-login-wrapper {
  min-height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
}

.zk-login-card {
  width: 100%;
  max-width: 440px;
  background: var(--zk-surface);
  border: 1px solid var(--zk-border);
  border-radius: 14px;
  padding: 36px 32px;
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
}

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

.zk-login-logo {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  margin: 0 auto 16px;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.zk-login-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--zk-text-main);
  margin-bottom: 6px;
}

.zk-login-subtitle {
  font-size: 13px;
  color: var(--zk-text-muted);
  line-height: 1.5;
}

.zk-login-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

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

.zk-form-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--zk-text-main);
}

.zk-form-hint {
  font-size: 12px;
  color: var(--zk-text-muted);
}

.zk-login-error {
  background: #fef2f2;
  border: 1px solid #fecaca;
  color: #991b1b;
  padding: 10px 14px;
  border-radius: var(--zk-radius-sm);
  font-size: 13px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.zk-login-btn {
  width: 100%;
  justify-content: center;
  padding: 11px 20px;
  font-size: 14px;
  margin-top: 6px;
}

.zk-login-footer {
  margin-top: 24px;
  padding-top: 18px;
  border-top: 1px solid var(--zk-border);
  font-size: 12px;
  color: var(--zk-text-muted);
  text-align: center;
  line-height: 1.6;
}

/* Documentation & Explanation Elements */
.zk-doc-section {
  background: var(--zk-surface);
  border: 1px solid var(--zk-border);
  border-radius: var(--zk-radius);
  padding: 24px;
  margin-bottom: 24px;
  box-shadow: var(--zk-shadow-sm);
}

.zk-doc-section__title {
  font-size: 18px;
  font-weight: 700;
  color: var(--zk-text-main);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.zk-doc-section__desc {
  font-size: 14px;
  color: var(--zk-text-secondary);
  line-height: 1.6;
  margin-bottom: 20px;
}

.zk-callout {
  border-left: 4px solid var(--zk-primary);
  background: #eff6ff;
  padding: 14px 18px;
  border-radius: 0 var(--zk-radius-sm) var(--zk-radius-sm) 0;
  margin-bottom: 18px;
  font-size: 13px;
  line-height: 1.6;
  color: #1e40af;
}

.zk-callout--success {
  border-left-color: #10b981;
  background: #ecfdf5;
  color: #065f46;
}

.zk-callout--warning {
  border-left-color: #f59e0b;
  background: #fffbeb;
  color: #92400e;
}

.zk-api-card {
  background: #ffffff;
  border: 1px solid var(--zk-border);
  border-radius: var(--zk-radius-sm);
  padding: 16px;
  margin-bottom: 14px;
  transition: all 0.15s ease;
}

.zk-api-card:hover {
  border-color: var(--zk-primary);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.08);
}

.zk-api-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
  flex-wrap: wrap;
}

.zk-method-badge {
  font-size: 11px;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 4px;
  text-transform: uppercase;
}

.zk-method-get {
  background: #eff6ff;
  color: #1d4ed8;
  border: 1px solid #bfdbfe;
}

.zk-method-post {
  background: #ecfdf5;
  color: #047857;
  border: 1px solid #a7f3d0;
}

.zk-api-path {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 13px;
  font-weight: 600;
  color: var(--zk-text-main);
  word-break: break-all;
}

.zk-code-snippet {
  background: #0f172a;
  color: #f8fafc;
  padding: 14px 16px;
  border-radius: 8px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 12px;
  line-height: 1.5;
  overflow-x: auto;
  margin: 10px 0;
}

.zk-doc-table {
  width: 100%;
  border-collapse: collapse;
  margin: 12px 0 20px;
  font-size: 13px;
}

.zk-doc-table th,
.zk-doc-table td {
  border: 1px solid var(--zk-border);
  padding: 10px 14px;
  text-align: left;
}

.zk-doc-table th {
  background: #f8fafc;
  font-weight: 600;
  color: var(--zk-text-main);
}

.zk-doc-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 16px;
  margin-bottom: 20px;
}