/* ==========================================================================
   SOPHIA ENGLISH ACADEMY (SEA ADMIN & STAFF v2.0.0 — BUILD 20261107.14)
   RED - WHITE ENTERPRISE EDITION DESIGN SYSTEM & SELF-CONTAINED UTILITY CSS
   Zero external CDN dependency required; works 100% offline & in Clean-Room
   ========================================================================== */
:root {
  --sea-primary: #991B1B;
  --sea-primary-hover: #7F1D1D;
  --sea-primary-accent: #DC2626;
  --sea-primary-soft: #FEF2F2;
  --sea-primary-border: #FECACA;

  --sea-red: #991B1B;
  --sea-red-hover: #7F1D1D;
  --sea-red-soft: #FEF2F2;
  --sea-red-border: #FECACA;

  --sea-checkin: #0F6E56;
  --sea-checkin-hover: #0B5643;
  --sea-checkin-soft: #ECFDF5;

  --sea-bg: #F8FAFC;
  --sea-surface: #FFFFFF;
  --sea-surface-subtle: #F8FAFC;
  --sea-surface-muted: #F1F5F9;

  --sea-text-primary: #0F172A;
  --sea-text-secondary: #475569;
  --sea-text-muted: #64748B;
  --sea-ink: #0F172A;
  --sea-ink-secondary: #475569;
  --sea-muted: #64748B;

  --sea-border: #E2E8F0;
  --sea-border-strong: #CBD5E1;

  --sea-success: #15803D;
  --sea-success-bg: #F0FDF4;
  --sea-success-border: #BBF7D0;

  --sea-warning: #B45309;
  --sea-warning-bg: #FFFBEB;
  --sea-warning-border: #FDE68A;

  --sea-danger: #B91C1C;
  --sea-danger-bg: #FEF2F2;
  --sea-danger-border: #FECACA;

  --sea-info: #1D4ED8;
  --sea-info-bg: #EFF6FF;
  --sea-info-border: #BFDBFE;

  --sea-radius-sm: 8px;
  --sea-radius-md: 12px;
  --sea-radius-card: 12px;
  --sea-radius-inner: 8px;
  --sea-shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.04);
  --sea-shadow-card: 0 1px 3px 0 rgba(15, 23, 42, 0.04), 0 1px 2px -1px rgba(15, 23, 42, 0.03);
  --sea-shadow-hover: 0 4px 12px -2px rgba(15, 23, 42, 0.07), 0 2px 4px -2px rgba(15, 23, 42, 0.04);

  --sidebar-expanded: 248px;
  --sidebar-collapsed: 72px;
  --header-height: 60px;
  --sea-font: 'Be Vietnam Pro', 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

* {
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

html, body {
  margin: 0;
  padding: 0;
  background-color: var(--sea-bg);
  color: var(--sea-text-primary);
  font-family: var(--sea-font);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

button, input, select, textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

.tabular-nums {
  font-variant-numeric: tabular-nums;
}

.hidden {
  display: none !important;
}

/* Custom subtle scrollbars */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: #F1F5F9;
}
::-webkit-scrollbar-thumb {
  background: #CBD5E1;
  border-radius: 9999px;
}
::-webkit-scrollbar-thumb:hover {
  background: #94A3B8;
}

/* ==========================================================================
   WEB ADMIN ENTERPRISE SHELL & COMPONENTS (sea_admin_sophia_english_academy.html)
   ========================================================================== */
.sea-admin-header {
  position: sticky;
  top: 0;
  z-index: 40;
  height: 60px;
  background-color: #FFFFFF;
  border-bottom: 1px solid #E2E8F0;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.sea-header-left,
.sea-header-right {
  display: flex;
  align-items: center;
  gap: 10px;
}

.sea-icon-btn {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  border: 1px solid #E2E8F0;
  background: #FFFFFF;
  color: #475569;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background-color 0.15s ease, border-color 0.15s ease;
}
.sea-icon-btn:hover {
  background: #F8FAFC;
  border-color: #CBD5E1;
}

.sea-brand-link {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: inherit;
  min-width: 0;
}

.sea-crest-box {
  width: 38px;
  height: 38px;
  border-radius: 9px;
  background: linear-gradient(180deg, #FFFBEB 0%, #FEF2F2 100%);
  border: 1px solid rgba(217, 119, 6, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  overflow: hidden;
}
.sea-crest-box img {
  width: 32px;
  height: 32px;
  object-fit: contain;
}

.sea-brand-text-wrap {
  display: flex;
  flex-direction: column;
  min-width: 0;
}
.sea-brand-main-title {
  font-size: 14.5px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: #0F172A;
  line-height: 1.2;
  white-space: nowrap;
}
.sea-brand-sub-title {
  font-size: 11px;
  font-weight: 500;
  color: #64748B;
  line-height: 1.2;
  white-space: nowrap;
}

.sea-version-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 9px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 700;
  background-color: #FEF2F2;
  color: #991B1B;
  border: 1px solid #FECACA;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
  flex-shrink: 0;
}
.sea-version-badge:hover {
  background-color: #FEE2E2;
}

.sea-sync-pill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 5px 12px;
  border-radius: 9999px;
  background-color: #F0FDF4;
  border: 1px solid #BBF7D0;
  color: #166534;
  font-size: 12px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}
.sea-sync-pill:hover {
  background-color: #DCFCE7;
}
.sea-sync-dot {
  width: 8px;
  height: 8px;
  border-radius: 9999px;
  background-color: #16A34A;
  flex-shrink: 0;
}

.sea-role-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  border-radius: 8px;
  background-color: #F1F5F9;
  border: 1px solid #E2E8F0;
  color: #1E293B;
  font-size: 12px;
  font-weight: 700;
}

.sea-header-action-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 11px;
  border-radius: 8px;
  background-color: #FFFFFF;
  border: 1px solid #E2E8F0;
  color: #334155;
  font-size: 12px;
  font-weight: 600;
  transition: all 0.15s ease;
}
.sea-header-action-btn:hover {
  background-color: #F8FAFC;
  border-color: #CBD5E1;
}
.sea-header-action-btn.danger:hover {
  background-color: #FEF2F2;
  border-color: #FECACA;
  color: #991B1B;
}

/* Body Layout */
.sea-body-container {
  display: flex;
  min-height: calc(100vh - 60px);
  position: relative;
}

#sea-sidebar {
  width: var(--sidebar-expanded);
  background-color: #FFFFFF;
  border-right: 1px solid #E2E8F0;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  user-select: none;
  z-index: 30;
  transition: width 0.15s ease, transform 0.15s ease;
}

body.sidebar-is-collapsed #sea-sidebar {
  width: var(--sidebar-collapsed);
}
body.sidebar-is-collapsed .sidebar-text,
body.sidebar-is-collapsed .sidebar-group-label,
body.sidebar-is-collapsed .sidebar-badge-full {
  display: none !important;
}
body.sidebar-is-collapsed .sidebar-badge-dot {
  display: block !important;
}
body.sidebar-is-collapsed .nav-item-btn {
  justify-content: center;
  padding-left: 0;
  padding-right: 0;
}

.sidebar-scroll-area {
  padding: 12px;
  overflow-y: auto;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.sidebar-group-label {
  padding: 0 10px;
  margin-bottom: 6px;
  font-size: 10px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #94A3B8;
}

.sidebar-nav-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.nav-item-btn {
  position: relative;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 8px 10px;
  border-radius: 8px;
  border: none;
  background: transparent;
  font-size: 13px;
  font-weight: 500;
  color: #334155;
  text-align: left;
  transition: background-color 0.12s ease, color 0.12s ease;
}
.nav-item-btn:hover {
  background-color: #F8FAFC;
  color: #0F172A;
}
.nav-item-left {
  display: flex;
  align-items: center;
  gap: 11px;
  min-width: 0;
}
.nav-icon-wrap {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  background-color: #F1F5F9;
  color: #475569;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background-color 0.12s ease, color 0.12s ease;
}

.nav-item-btn.active {
  background-color: var(--sea-primary-soft);
  color: var(--sea-primary);
  font-weight: 700;
}
.nav-item-btn.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 3.5px;
  background-color: var(--sea-primary);
  border-radius: 0 4px 4px 0;
}
.nav-item-btn.active .nav-icon-wrap {
  background-color: var(--sea-primary);
  color: #FFFFFF;
}

.sidebar-badge-full {
  padding: 2px 7px;
  font-size: 10.5px;
  font-weight: 700;
  border-radius: 9999px;
  background-color: #991B1B;
  color: #FFFFFF;
  font-variant-numeric: tabular-nums;
}
.sidebar-badge-full.muted {
  background-color: #F1F5F9;
  color: #475569;
  border: 1px solid #E2E8F0;
}

.sidebar-footer {
  padding: 12px;
  border-top: 1px solid #E2E8F0;
  background-color: #F8FAFC;
  font-size: 11px;
  color: #64748B;
}

.sea-main-workspace {
  flex: 1;
  min-width: 0;
  padding: 24px 28px;
  max-width: 1800px;
  margin: 0 auto;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 22px;
}

/* Enterprise Card & Subcard */
.sea-card {
  background-color: var(--sea-surface);
  border: 1px solid var(--sea-border);
  border-radius: var(--sea-radius-card);
  padding: 20px;
  box-shadow: var(--sea-shadow-card);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.sea-card:hover {
  border-color: #CBD5E1;
}

.sea-subcard {
  background-color: #FFFFFF;
  border: 1px solid var(--sea-border);
  border-radius: var(--sea-radius-inner);
  padding: 14px 16px;
  transition: border-color 0.15s ease, background-color 0.15s ease;
}
.sea-subcard:hover {
  border-color: #CBD5E1;
  background-color: #FCFDFE;
}
.sea-subcard.warn {
  background-color: #FEF2F2;
  border-color: #FECACA;
}
.sea-subcard.amber {
  background-color: #FFFBEB;
  border-color: #FDE68A;
}

/* Executive Strip & 4 Pillars Flexible Layouts */
.sea-kpi-strip-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}
.sea-kpi-strip-card {
  border-left: 4px solid #991B1B;
  padding: 16px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

#pillars-container.layout-bento {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}
#pillars-container.layout-horizontal {
  display: flex;
  flex-direction: column;
  gap: 18px;
}
#pillars-container.layout-horizontal .pillar-inner-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}
#pillars-container.layout-vertical {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  align-items: start;
}
#pillars-container.layout-vertical .pillar-inner-grid {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.pillar-inner-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 14px;
}

/* Progress Bar */
.sea-progress-track {
  width: 100%;
  height: 8px;
  border-radius: 9999px;
  background-color: #F1F5F9;
  overflow: hidden;
  display: flex;
}

/* Buttons, Inputs, Badges & Tables */
.sea-card-header {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 14px;
  margin-bottom: 14px;
  border-bottom: 1px solid #F1F5F9;
}
.sea-card-title {
  margin: 2px 0 0;
  font-size: 18px;
  font-weight: 800;
  color: #0F172A;
}
.sea-card-subtitle {
  margin: 4px 0 0;
  font-size: 13px;
  color: #475569;
}

.sea-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 7px 13px;
  border-radius: 8px;
  font-size: 12.5px;
  font-weight: 600;
  border: 1px solid #E2E8F0;
  background-color: #FFFFFF;
  color: #1E293B;
  transition: all 0.15s ease;
}
.sea-btn:hover {
  background-color: #F8FAFC;
  border-color: #CBD5E1;
}
.sea-btn-primary {
  background-color: #991B1B;
  color: #FFFFFF;
  border-color: #991B1B;
}
.sea-btn-primary:hover {
  background-color: #7F1D1D;
  border-color: #7F1D1D;
}
.sea-btn-soft {
  background-color: #FEF2F2;
  color: #991B1B;
  border-color: #FECACA;
}
.sea-btn-soft:hover {
  background-color: #FEE2E2;
}

.sea-input, .sea-select {
  padding: 7px 11px;
  border: 1px solid #CBD5E1;
  border-radius: 8px;
  background-color: #FFFFFF;
  color: #0F172A;
  font-size: 12.5px;
}
.sea-input:focus, .sea-select:focus {
  outline: 2px solid rgba(153, 27, 27, 0.25);
  border-color: #991B1B;
}

.sea-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2.5px 8px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 700;
  background-color: #F1F5F9;
  color: #334155;
  font-variant-numeric: tabular-nums;
}
.sea-badge-red {
  background-color: #FEF2F2;
  color: #991B1B;
  border: 1px solid #FECACA;
}
.sea-badge-green {
  background-color: #F0FDF4;
  color: #15803D;
  border: 1px solid #BBF7D0;
}
.sea-badge-amber {
  background-color: #FFFBEB;
  color: #B45309;
  border: 1px solid #FDE68A;
}
.sea-badge-blue {
  background-color: #EFF6FF;
  color: #1D4ED8;
  border: 1px solid #BFDBFE;
}

.sea-table-wrap {
  overflow-x: auto;
  border: 1px solid #E2E8F0;
  border-radius: 10px;
}
.sea-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12.5px;
  background-color: #FFFFFF;
  font-variant-numeric: tabular-nums;
}
.sea-table th,
.sea-table td {
  padding: 10px 13px;
  border-bottom: 1px solid #E2E8F0;
  text-align: left;
  vertical-align: middle;
}
.sea-table th {
  background-color: #F8FAFC;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: #475569;
  white-space: nowrap;
}
.sea-table tbody tr:hover {
  background-color: #F8FAFC;
}

/* ==========================================================================
   MOBILE /STAFF SHELL & COMPONENTS (sea_staff_mobile_sophia_english_academy.html)
   ========================================================================== */
.sea-staff-customizer-bar {
  background-color: #0F172A;
  color: #E2E8F0;
  border-bottom: 1px solid #1E293B;
  padding: 8px 12px;
  font-size: 11px;
}
.sea-staff-customizer-inner {
  max-width: 980px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}
.sea-staff-customizer-btn {
  padding: 4px 10px;
  border-radius: 6px;
  background-color: #1E293B;
  border: 1px solid #334155;
  color: #F1F5F9;
  font-size: 11px;
  font-weight: 600;
}
.sea-staff-customizer-btn:hover {
  background-color: #334155;
}
.sea-staff-customizer-btn.accent {
  background-color: #991B1B;
  border-color: #B91C1C;
  color: #FFFFFF;
}

#mobile-app-shell {
  width: 100%;
  max-width: 430px;
  min-height: 100vh;
  margin: 0 auto;
  background-color: #F8FAFC;
  position: relative;
  display: flex;
  flex-direction: column;
  padding-bottom: 88px;
  box-shadow: 0 12px 36px -8px rgba(15, 23, 42, 0.14);
  border-left: 1px solid #CBD5E1;
  border-right: 1px solid #CBD5E1;
}

body.viewport-full #mobile-app-shell {
  max-width: 100%;
  border-left: none;
  border-right: none;
  box-shadow: none;
}

.sea-staff-header-wrap {
  padding: 12px 12px 6px;
  position: sticky;
  top: 0;
  z-index: 30;
  background-color: rgba(248, 250, 252, 0.96);
  backdrop-filter: blur(6px);
}

.sea-staff-burgundy-header {
  border-radius: 16px;
  background: linear-gradient(135deg, #991B1B 0%, #881313 55%, #650E0E 100%);
  color: #FFFFFF;
  padding: 14px;
  box-shadow: 0 2px 8px rgba(127, 29, 29, 0.22);
  border: 1px solid rgba(127, 29, 29, 0.85);
  position: relative;
  overflow: hidden;
}

.sea-staff-top-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
  position: relative;
  z-index: 2;
}

.sea-staff-brand-group {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}

.sea-staff-logo-box {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background-color: #FFFBEB;
  border: 1px solid rgba(252, 211, 77, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  overflow: hidden;
}
.sea-staff-logo-box img {
  width: 26px;
  height: 26px;
  object-fit: contain;
}

.sea-staff-version-pill {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: 9999px;
  background-color: rgba(255, 255, 255, 0.16);
  border: 1px solid rgba(255, 255, 255, 0.28);
  color: #FFFFFF;
  font-size: 10.5px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.sea-staff-clock-pill {
  padding: 2px 10px;
  border-radius: 9999px;
  background-color: rgba(0, 0, 0, 0.26);
  border: 1px solid rgba(255, 255, 255, 0.18);
  color: #FFFFFF;
  font-size: 11.5px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.sea-staff-bottom-row {
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px solid rgba(255, 255, 255, 0.16);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  position: relative;
  z-index: 2;
}

.sea-staff-quick-pill {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 6px 11px;
  border-radius: 9999px;
  background-color: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: #FFFFFF;
  font-size: 12px;
  font-weight: 600;
}
.sea-staff-quick-pill:hover {
  background-color: rgba(255, 255, 255, 0.24);
}

/* 5-Tab Segmented Bar */
.sea-staff-top-tabs {
  padding: 6px 12px 4px;
}
.sea-staff-top-tabs-inner {
  background-color: #E2E8F0;
  padding: 5px;
  border-radius: 16px;
  border: 1px solid #CBD5E1;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 4px;
}
.top-tab-btn {
  border-radius: 12px;
  padding: 7px 4px;
  text-align: center;
  font-size: 11px;
  line-height: 1.2;
  font-weight: 600;
  color: #334155;
  background-color: #FFFFFF;
  border: 1px solid rgba(226, 232, 240, 0.9);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  transition: all 0.12s ease;
}
.top-tab-btn.active {
  background-color: #991B1B;
  color: #FFFFFF;
  border-color: #991B1B;
  font-weight: 700;
  box-shadow: 0 2px 6px rgba(153, 27, 27, 0.22);
}

/* Mobile Cards */
.sea-m-card {
  background-color: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: 16px;
  padding: 15px;
  box-shadow: 0 1px 3px 0 rgba(15, 23, 42, 0.03), 0 1px 2px -1px rgba(15, 23, 42, 0.02);
}
.sea-m-card-accent {
  background-color: #FFFFFF;
  border: 1px solid #FECACA;
  border-radius: 16px;
  padding: 15px;
  box-shadow: 0 1px 3px 0 rgba(153, 27, 27, 0.04);
}

/* Check-In & Check-Out Ergonomic Action Pair */
.checkin-buttons-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 11px;
}
.checkin-buttons-grid.vertical {
  grid-template-columns: 1fr;
}
.sea-btn-checkin {
  border-radius: 16px;
  background-color: #0F6E56;
  color: #FFFFFF;
  padding: 16px 12px;
  min-height: 86px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  border: 1px solid rgba(6, 78, 59, 0.3);
  box-shadow: 0 2px 6px rgba(15, 110, 86, 0.2);
}
.sea-btn-checkin:hover {
  background-color: #0B5643;
}
.sea-btn-checkout {
  border-radius: 16px;
  background-color: #991B1B;
  color: #FFFFFF;
  padding: 16px 12px;
  min-height: 86px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  border: 1px solid #7F1D1D;
  box-shadow: 0 2px 6px rgba(153, 27, 27, 0.2);
}
.sea-btn-checkout.muted {
  background-color: #E2E8F0;
  color: #64748B;
  border-color: #CBD5E1;
  box-shadow: none;
}

/* Sticky Bottom Navigation Bar */
.sea-staff-bottom-nav {
  position: fixed;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: 430px;
  background-color: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(8px);
  border-top: 1px solid #E2E8F0;
  padding: 6px 8px;
  z-index: 30;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 4px;
  box-shadow: 0 -4px 16px rgba(15, 23, 42, 0.06);
}
body.viewport-full .sea-staff-bottom-nav {
  max-width: 100%;
}
.bottom-nav-btn {
  border: none;
  background: transparent;
  color: #64748B;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 4px 2px;
  border-radius: 10px;
  font-size: 10px;
  font-weight: 600;
}
.bottom-nav-indicator {
  width: 36px;
  height: 24px;
  border-radius: 9999px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 2px;
}
.bottom-nav-btn.active {
  color: #991B1B;
  font-weight: 700;
}
.bottom-nav-btn.active .bottom-nav-indicator {
  background-color: #FEF2F2;
  border: 1px solid #FECACA;
  color: #991B1B;
}

/* Responsive Breakpoints */
@media (max-width: 1279px) {
  .sea-kpi-strip-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  #pillars-container.layout-vertical {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  #pillars-container.layout-horizontal .pillar-inner-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (max-width: 1023px) {
  #pillars-container.layout-bento,
  #pillars-container.layout-vertical {
    grid-template-columns: minmax(0, 1fr);
  }
  #sea-sidebar {
    position: fixed;
    top: 60px;
    bottom: 0;
    left: 0;
    transform: translateX(-100%);
    box-shadow: 4px 0 24px rgba(15, 23, 42, 0.15);
  }
  #sea-sidebar.mobile-open {
    transform: translateX(0);
  }
}
@media (max-width: 639px) {
  .sea-kpi-strip-grid,
  .pillar-inner-grid,
  #pillars-container.layout-horizontal .pillar-inner-grid {
    grid-template-columns: minmax(0, 1fr);
  }
  .sea-main-workspace {
    padding: 14px;
  }
}

/* A4 Labor Contract Preview Styles */
.sea-a4-preview-box {
  background: #525659;
  padding: 24px;
  border-radius: 12px;
  overflow-x: auto;
}
.sea-a4-document .a4-page {
  width: 210mm;
  min-height: 297mm;
  margin: 0 auto;
  padding: 18mm 20mm;
  background: #FFFFFF;
  color: #000000;
  font-family: 'Times New Roman', Times, serif;
  font-size: 12.5pt;
  line-height: 1.5;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
}
.a4-header {
  display: flex;
  justify-content: space-between;
  text-align: center;
  margin-bottom: 16px;
}
.a4-header > div {
  display: flex;
  flex-direction: column;
}
.a4-title {
  text-align: center;
  font-size: 16pt;
  margin: 12px 0 4px;
}
.a4-subtitle {
  text-align: center;
  margin: 0 0 16px;
  font-style: italic;
}
.a4-info-grid {
  width: 100%;
  border-collapse: collapse;
  margin: 8px 0;
}
.a4-info-grid td {
  padding: 4px 6px;
  border: 1px solid #D1D5DB;
}
.a4-signatures {
  display: grid;
  grid-template-columns: 1fr 1fr;
  text-align: center;
  margin-top: 28px;
}
.a4-sig-space {
  height: 72px;
}