/**
 * Montrims Ltd. - Material Design 3 (MD3) Design System
 * Enterprise Theme Tokens, Surfaces, Elevations, and Components
 * Strictly following Google Material Design 3 Specifications (No Neomorphism)
 */

:root {
  /* MD3 Core Color Tokens - Slate & Industrial Deep Teal Baseline */
  --md-sys-color-primary: #006874;
  --md-sys-color-on-primary: #FFFFFF;
  --md-sys-color-primary-container: #9EEFFD;
  --md-sys-color-on-primary-container: #001F24;

  --md-sys-color-secondary: #4A6267;
  --md-sys-color-on-secondary: #FFFFFF;
  --md-sys-color-secondary-container: #CDE7EC;
  --md-sys-color-on-secondary-container: #051F23;

  --md-sys-color-tertiary: #525E7D;
  --md-sys-color-on-tertiary: #FFFFFF;
  --md-sys-color-tertiary-container: #DAE2FF;
  --md-sys-color-on-tertiary-container: #0E1A37;

  --md-sys-color-error: #BA1A1A;
  --md-sys-color-on-error: #FFFFFF;
  --md-sys-color-error-container: #FFDAD6;
  --md-sys-color-on-error-container: #410002;

  --md-sys-color-success: #1E6C3B;
  --md-sys-color-on-success: #FFFFFF;
  --md-sys-color-success-container: #A6F5B5;
  --md-sys-color-on-success-container: #00210B;

  --md-sys-color-warning: #7C5800;
  --md-sys-color-warning-container: #FFDEA2;
  --md-sys-color-on-warning-container: #261900;

  /* Surfaces & Containers */
  --md-sys-color-background: #F8FAF9;
  --md-sys-color-on-background: #191C1D;
  --md-sys-color-surface: #F8FAF9;
  --md-sys-color-on-surface: #191C1D;
  --md-sys-color-surface-variant: #DBE4E6;
  --md-sys-color-on-surface-variant: #3F484A;

  --md-sys-color-surface-container-lowest: #FFFFFF;
  --md-sys-color-surface-container-low: #F2F5F5;
  --md-sys-color-surface-container: #ECEFF0;
  --md-sys-color-surface-container-high: #E6EAEB;
  --md-sys-color-surface-container-highest: #E0E4E5;

  --md-sys-color-outline: #6F797A;
  --md-sys-color-outline-variant: #BFC8CA;

  /* MD3 Standard Elevation Shadows */
  --md-sys-elevation-0: none;
  --md-sys-elevation-1: 0px 1px 3px 1px rgba(0, 0, 0, 0.08), 0px 1px 2px 0px rgba(0, 0, 0, 0.12);
  --md-sys-elevation-2: 0px 2px 6px 2px rgba(0, 0, 0, 0.08), 0px 1px 2px 0px rgba(0, 0, 0, 0.12);
  --md-sys-elevation-3: 0px 4px 8px 3px rgba(0, 0, 0, 0.08), 0px 1px 3px 0px rgba(0, 0, 0, 0.14);

  /* Typography & Geometry */
  --md-sys-shape-corner-none: 0px;
  --md-sys-shape-corner-xs: 4px;
  --md-sys-shape-corner-sm: 8px;
  --md-sys-shape-corner-md: 12px;
  --md-sys-shape-corner-lg: 16px;
  --md-sys-shape-corner-xl: 28px;
  --md-sys-shape-corner-full: 9999px;

  --font-family-base: 'Plus Jakarta Sans', 'Noto Sans Bengali', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-family-mono: 'JetBrains Mono', monospace;
}

/* Base resets & typography */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-family-base);
  background-color: var(--md-sys-color-background);
  color: var(--md-sys-color-on-background);
  line-height: 1.5;
  font-size: 14px;
  -webkit-font-smoothing: antialiased;
}

/* Modern Webkit Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: var(--md-sys-color-surface-container-low);
}
::-webkit-scrollbar-thumb {
  background: var(--md-sys-color-outline-variant);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--md-sys-color-outline);
}

/* Layout Grid */
.app-container {
  display: flex;
  min-height: 100vh;
}

/* MD3 Navigation Drawer (Sidebar) */
.md-nav-drawer {
  width: 280px;
  background-color: var(--md-sys-color-surface-container-lowest);
  padding: 16px 12px;
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--md-sys-color-surface-container-high);
  flex-shrink: 0;
  z-index: 20;
}

.md-nav-brand {
  padding: 12px 16px 24px;
  display: flex;
  align-items: center;
  gap: 14px;
}

.md-brand-badge {
  width: 44px;
  height: 44px;
  border-radius: var(--md-sys-shape-corner-md);
  background: linear-gradient(135deg, var(--md-sys-color-primary), #004F58);
  color: var(--md-sys-color-on-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 20px;
  box-shadow: 0 4px 12px rgba(0, 104, 116, 0.2);
}

.md-brand-title {
  font-size: 17px;
  font-weight: 800;
  color: var(--md-sys-color-on-surface);
  line-height: 1.2;
}

.md-brand-subtitle {
  font-size: 11px;
  font-weight: 500;
  color: var(--md-sys-color-outline);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.md-nav-section-title {
  padding: 16px 16px 8px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--md-sys-color-outline);
}

.md-nav-menu {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.md-nav-item a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-radius: var(--md-sys-shape-corner-full);
  color: var(--md-sys-color-on-surface-variant);
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
  transition: all 0.2s cubic-bezier(0.2, 0, 0, 1);
}

.md-nav-item a:hover {
  background-color: var(--md-sys-color-surface-container-high);
  color: var(--md-sys-color-on-surface);
}

.md-nav-item.active a {
  background-color: var(--md-sys-color-secondary-container);
  color: var(--md-sys-color-on-secondary-container);
  font-weight: 700;
}

/* User Card in Drawer */
.md-nav-user-footer {
  margin-top: auto;
  padding: 14px;
  background-color: var(--md-sys-color-surface-container-low);
  border-radius: var(--md-sys-shape-corner-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  border: 1px solid var(--md-sys-color-surface-container-high);
  transition: background-color 0.2s ease;
}

.md-nav-user-footer:hover {
  background-color: var(--md-sys-color-surface-container);
}

.user-info-text {
  overflow: hidden;
}

.user-info-name {
  font-size: 14px;
  font-weight: 700;
  color: var(--md-sys-color-on-surface);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.user-info-role {
  font-size: 11px;
  color: var(--md-sys-color-primary);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Main Area */
.app-main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  overflow-y: auto;
  background-color: var(--md-sys-color-background);
}

/* MD3 Top App Bar (Modernized with Glassmorphism) */
.md-top-app-bar {
  height: 72px;
  background-color: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(191, 200, 202, 0.3);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 32px;
  position: sticky;
  top: 0;
  z-index: 10;
}

.md-top-bar-title {
  font-size: 20px;
  font-weight: 800;
  color: var(--md-sys-color-on-surface);
}

.md-top-bar-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* Page Body - UPDATED WIDER MAX-WIDTH FOR 5 CARDS */
.page-body {
  padding: 24px 32px 48px;
  max-width: 1600px; /* Increased from 1440px to 1600px */
  margin: 0 auto;
  width: 100%;
}

/* MD3 Buttons (Pill shaped, no Neomorphism) */
.md-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 40px;
  padding: 0 24px;
  border-radius: var(--md-sys-shape-corner-full);
  font-family: inherit;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.2, 0, 0, 1);
  white-space: nowrap;
}

.md-btn:focus-visible {
  outline: 3px solid var(--md-sys-color-primary-container);
  outline-offset: 2px;
}

.md-btn-filled {
  background-color: var(--md-sys-color-primary);
  color: var(--md-sys-color-on-primary);
  box-shadow: var(--md-sys-elevation-1);
}

.md-btn-filled:hover {
  box-shadow: var(--md-sys-elevation-2);
  transform: translateY(-1px);
}

.md-btn-tonal {
  background-color: var(--md-sys-color-secondary-container);
  color: var(--md-sys-color-on-secondary-container);
}

.md-btn-tonal:hover {
  background-color: #BBDDE3;
}

.md-btn-outlined {
  background-color: transparent;
  color: var(--md-sys-color-primary);
  border: 1px solid var(--md-sys-color-outline);
}

.md-btn-outlined:hover {
  background-color: rgba(0, 104, 116, 0.08);
}

.md-btn-text {
  background-color: transparent;
  color: var(--md-sys-color-primary);
  padding: 0 16px;
}

.md-btn-text:hover {
  background-color: rgba(0, 104, 116, 0.08);
}

.md-btn-sm {
  height: 32px;
  padding: 0 16px;
  font-size: 13px;
}

.md-btn-danger {
  background-color: var(--md-sys-color-error);
  color: var(--md-sys-color-on-error);
}

/* MD3 Surface Cards */
.md-card {
  background-color: var(--md-sys-color-surface-container-lowest);
  border-radius: var(--md-sys-shape-corner-lg);
  border: 1px solid rgba(191, 200, 202, 0.4);
  padding: 24px;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
  box-shadow: 0 4px 20px rgba(0,0,0,0.02);
}

.md-card-elevated {
  box-shadow: var(--md-sys-elevation-1);
}

.md-card-elevated:hover {
  box-shadow: var(--md-sys-elevation-2);
  transform: translateY(-2px);
}

/* Stat KPI Grid - UPDATED GRID COLUMN SIZE */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); /* Reduced from 220px to 200px to allow 5 cards */
  gap: 20px;
  margin-bottom: 28px;
}

.kpi-card {
  padding: 24px;
  border-radius: var(--md-sys-shape-corner-lg);
  background-color: var(--md-sys-color-surface-container-lowest);
  border: 1px solid rgba(191, 200, 202, 0.4);
  display: flex;
  flex-direction: column;
  box-shadow: 0 4px 16px rgba(0,0,0,0.02);
  transition: transform 0.2s cubic-bezier(0.2, 0, 0, 1), box-shadow 0.2s cubic-bezier(0.2, 0, 0, 1);
}

.kpi-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--md-sys-elevation-2);
}

.kpi-title {
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--md-sys-color-outline);
  margin-bottom: 12px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.kpi-value {
  font-size: 28px;
  font-weight: 900;
  color: var(--md-sys-color-on-surface);
  font-variant-numeric: tabular-nums;
  line-height: 1.1;
  font-family: monospace;
}

.kpi-meta {
  margin-top: 8px;
  font-size: 12px;
  font-weight: 500;
  color: var(--md-sys-color-outline);
}

/* MD3 Outlined Form Controls */
.form-group {
  margin-bottom: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-label {
  font-size: 12px;
  font-weight: 700;
  color: var(--md-sys-color-on-surface-variant);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.form-control {
  height: 48px;
  padding: 0 16px;
  font-size: 14px;
  font-weight: 500;
  font-family: inherit;
  border-radius: var(--md-sys-shape-corner-md);
  border: 1px solid var(--md-sys-color-outline-variant);
  background-color: var(--md-sys-color-surface-container-lowest);
  color: var(--md-sys-color-on-surface);
  transition: all 0.2s ease;
  outline: none;
}

.form-control:focus {
  border-color: var(--md-sys-color-primary);
  border-width: 2px;
  padding: 0 15px; /* Offset for thicker border */
  box-shadow: 0 0 0 4px rgba(0, 104, 116, 0.08);
}

textarea.form-control {
  height: auto;
  min-height: 100px;
  padding: 12px 16px;
}

.form-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form-grid-3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 20px;
}

/* MD3 Table Specification */
.md-table-container {
  overflow-x: auto;
  border-radius: var(--md-sys-shape-corner-lg);
  border: 1px solid rgba(191, 200, 202, 0.4);
  background-color: var(--md-sys-color-surface-container-lowest);
  box-shadow: 0 4px 20px rgba(0,0,0,0.03);
}

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

.md-table th {
  background-color: #FFFFFF;
  padding: 16px 20px;
  font-weight: 800;
  font-size: 11px;
  text-transform: uppercase;
  color: var(--md-sys-color-outline);
  border-bottom: 1px solid rgba(191, 200, 202, 0.4);
  white-space: nowrap;
}

.md-table td {
  padding: 16px 20px;
  border-bottom: 1px solid rgba(191, 200, 202, 0.2);
  color: var(--md-sys-color-on-surface);
  vertical-align: middle;
  transition: background-color 0.2s ease;
}

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

.md-table tr:hover td {
  background-color: var(--md-sys-color-surface-container-low);
}

/* Tabular Numerals & Currencies */
.tabular-nums {
  font-variant-numeric: tabular-nums;
  font-family: var(--font-family-mono), monospace;
}

.currency-taka {
  font-family: inherit;
  font-weight: 700;
  color: var(--md-sys-color-primary);
}

/* Status Chips & Tags (MD3 Flat Badges) */
.md-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 12px;
  border-radius: var(--md-sys-shape-corner-full);
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  line-height: 1.2;
}

.badge-present {
  background-color: var(--md-sys-color-success-container);
  color: var(--md-sys-color-on-success-container);
}

.badge-late {
  background-color: var(--md-sys-color-warning-container);
  color: var(--md-sys-color-on-warning-container);
}

.badge-absent {
  background-color: var(--md-sys-color-error-container);
  color: var(--md-sys-color-on-error-container);
}

.badge-leave {
  background-color: var(--md-sys-color-secondary-container);
  color: var(--md-sys-color-on-secondary-container);
}

/* Alerts */
.md-alert {
  padding: 16px 20px;
  border-radius: var(--md-sys-shape-corner-lg);
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 14px;
  font-weight: 600;
  box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

.md-alert-success {
  background-color: var(--md-sys-color-success-container);
  color: var(--md-sys-color-on-success-container);
}

.md-alert-error {
  background-color: var(--md-sys-color-error-container);
  color: var(--md-sys-color-on-error-container);
}

/* Modal Dialog */
.md-modal-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 16px;
}

.md-modal {
  background-color: var(--md-sys-color-surface-container-lowest);
  border-radius: var(--md-sys-shape-corner-xl);
  padding: 32px;
  width: 100%;
  max-width: 600px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--md-sys-elevation-3);
  animation: modalIn 0.3s cubic-bezier(0.2, 0, 0, 1);
}

@keyframes modalIn {
  from { opacity: 0; transform: translateY(20px) scale(0.95); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.md-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.md-modal-title {
  font-size: 20px;
  font-weight: 800;
  color: var(--md-sys-color-on-surface);
}

/* Responsive */
@media (max-width: 900px) {
  .app-container {
    flex-direction: column;
  }
  .md-nav-drawer {
    width: 100%;
    border-right: none;
    border-bottom: 1px solid var(--md-sys-color-surface-container-high);
  }
  .md-top-app-bar {
    padding: 0 20px;
  }
  .page-body {
    padding: 16px 20px 32px;
  }
  .form-grid-2, .form-grid-3 {
    grid-template-columns: 1fr;
  }
}