/* ===== LOGIN SCREEN ===== */
.login-screen {
  position: fixed;
  inset: 0;
  background: var(--gray-50);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.login-card {
  background: #fff;
  border: 1px solid var(--gray-200);
  border-radius: 16px;
  box-shadow: var(--shadow-lg);
  padding: 40px;
  width: 100%;
  max-width: 420px;
}

.login-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 28px;
}

.login-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 4px;
}

.login-subtitle {
  font-size: 14px;
  color: var(--gray-500);
  margin-bottom: 28px;
}

.form-input {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-sm);
  font-size: 14px;
  color: var(--gray-800);
  background: #fff;
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}

.form-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(79,70,229,.12);
}

.login-error {
  font-size: 13px;
  color: var(--danger);
  background: var(--danger-light);
  border: 1px solid var(--danger-border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  margin-bottom: 16px;
}

.login-btn {
  width: 100%;
  justify-content: center;
  margin-top: 8px;
  padding: 11px;
  font-size: 15px;
}

.btn-sm {
  padding: 6px 12px;
  font-size: 13px;
  gap: 6px;
}

/* ===== RESET & BASE ===== */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --primary-light: #eef2ff;
  --primary-border: #c7d2fe;
  --success: #059669;
  --success-light: #ecfdf5;
  --success-border: #a7f3d0;
  --danger: #dc2626;
  --danger-light: #fef2f2;
  --danger-border: #fecaca;
  --warning: #d97706;
  --warning-light: #fffbeb;
  --warning-border: #fde68a;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  --sidebar-w: 240px;
  --header-h: 72px;
  --radius: 10px;
  --radius-sm: 6px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,.05);
  --shadow: 0 1px 3px rgba(0,0,0,.1), 0 1px 2px rgba(0,0,0,.06);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,.1), 0 2px 4px -1px rgba(0,0,0,.06);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,.1), 0 4px 6px -2px rgba(0,0,0,.05);
  --transition: 150ms ease;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--gray-50);
  color: var(--gray-800);
  line-height: 1.5;
  min-height: 100vh;
}

/* ===== LAYOUT ===== */
.app {
  display: flex;
  min-height: 100vh;
}

/* ===== SIDEBAR ===== */
.sidebar {
  width: var(--sidebar-w);
  background: var(--gray-900);
  color: #fff;
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 100;
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 20px 20px 28px;
}

.brand-icon {
  width: 36px;
  height: 36px;
  background: var(--primary);
  border-radius: 8px;
  display: grid;
  place-items: center;
  font-weight: 700;
  font-size: 16px;
}

.brand-name {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.3px;
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 0 12px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: 8px;
  color: var(--gray-400);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: all var(--transition);
}

.nav-item:hover {
  color: #fff;
  background: rgba(255,255,255,.08);
}

.nav-item.active {
  color: #fff;
  background: rgba(255,255,255,.12);
}

/* ===== MAIN ===== */
.main {
  flex: 1;
  margin-left: var(--sidebar-w);
  display: flex;
  flex-direction: column;
}

/* ===== HEADER ===== */
.header {
  height: var(--header-h);
  padding: 0 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #fff;
  border-bottom: 1px solid var(--gray-200);
  position: sticky;
  top: 0;
  z-index: 50;
}

.page-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--gray-900);
}

.page-subtitle {
  font-size: 13px;
  color: var(--gray-500);
  margin-top: 2px;
}

.user-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 13px;
  font-weight: 600;
}

/* ===== PAGES ===== */
.page {
  display: none;
  padding: 28px 32px;
  flex: 1;
}

.page.active {
  display: block;
}

/* ===== CARDS ===== */
.card {
  background: #fff;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.card-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--gray-200);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-header h2 {
  font-size: 16px;
  font-weight: 600;
  color: var(--gray-900);
}

.card-body {
  padding: 24px;
}

.card-body.no-padding {
  padding: 0;
}

.card-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--gray-200);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--gray-50);
  border-radius: 0 0 var(--radius) var(--radius);
}

.footer-info {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--gray-500);
}

/* ===== FORM ===== */
.form-grid {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

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

.form-group.full-width {
  grid-column: 1 / -1;
}

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: 8px;
}

.form-select {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-sm);
  font-size: 14px;
  color: var(--gray-800);
  background: #fff;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%236b7280' viewBox='0 0 16 16'%3E%3Cpath d='M4.646 5.646a.5.5 0 0 1 .708 0L8 8.293l2.646-2.647a.5.5 0 0 1 .708.708l-3 3a.5.5 0 0 1-.708 0l-3-3a.5.5 0 0 1 0-.708z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  cursor: pointer;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(79,70,229,.15);
}

.form-select.sm {
  width: auto;
  padding: 6px 32px 6px 12px;
  font-size: 13px;
}

/* ===== RADIO CARDS ===== */
.radio-group {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.radio-card {
  position: relative;
  cursor: pointer;
}

.radio-card input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.radio-card-content {
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  transition: all var(--transition);
}

.radio-card input:checked + .radio-card-content {
  border-color: var(--primary);
  background: var(--primary-light);
}

.radio-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--gray-800);
}

.radio-desc {
  font-size: 12px;
  color: var(--gray-500);
}

/* ===== MONTH TAGS ===== */
.month-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  min-height: 40px;
  align-items: center;
}

.month-tag {
  padding: 4px 12px;
  background: var(--primary-light);
  color: var(--primary);
  border: 1px solid var(--primary-border);
  border-radius: 20px;
  font-size: 12px;
  font-weight: 500;
}

.tag-placeholder {
  font-size: 13px;
  color: var(--gray-400);
}

/* ===== EMPLOYEE LIST ===== */
.employee-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.search-box {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-sm);
  width: 280px;
  color: var(--gray-400);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.search-box:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(79,70,229,.15);
}

.search-box input {
  border: none;
  outline: none;
  font-size: 14px;
  color: var(--gray-800);
  width: 100%;
  background: transparent;
}

.toolbar-actions {
  display: flex;
  gap: 8px;
}

.employee-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 10px;
  max-height: 320px;
  overflow-y: auto;
  padding: 2px;
}

.employee-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
  user-select: none;
}

.employee-card:hover {
  border-color: var(--gray-300);
  background: var(--gray-50);
}

.employee-card.selected {
  border-color: var(--primary);
  background: var(--primary-light);
}

.emp-checkbox {
  width: 18px;
  height: 18px;
  border: 2px solid var(--gray-300);
  border-radius: 4px;
  display: grid;
  place-items: center;
  flex-shrink: 0;
  transition: all var(--transition);
}

.employee-card.selected .emp-checkbox {
  background: var(--primary);
  border-color: var(--primary);
}

.emp-checkbox svg {
  opacity: 0;
  transition: opacity var(--transition);
}

.employee-card.selected .emp-checkbox svg {
  opacity: 1;
}

.emp-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 13px;
  font-weight: 600;
  color: #fff;
  flex-shrink: 0;
}

.emp-info {
  flex: 1;
  min-width: 0;
}

.emp-name {
  font-size: 14px;
  font-weight: 500;
  color: var(--gray-800);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.emp-role {
  font-size: 12px;
  color: var(--gray-500);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.selected-count {
  margin-top: 12px;
  font-size: 13px;
  color: var(--gray-500);
  font-weight: 500;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--primary-hover);
}

.btn-primary:disabled {
  background: var(--gray-300);
  cursor: not-allowed;
}

.btn-ghost {
  background: transparent;
  color: var(--gray-600);
  padding: 6px 12px;
  font-size: 13px;
}

.btn-ghost:hover {
  background: var(--gray-100);
  color: var(--gray-800);
}

/* ===== STATS GRID ===== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: #fff;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  box-shadow: var(--shadow-sm);
}

.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: grid;
  place-items: center;
}

.stat-icon.sent {
  background: var(--success-light);
  color: var(--success);
}

.stat-icon.failed {
  background: var(--danger-light);
  color: var(--danger);
}

.stat-icon.pending {
  background: var(--warning-light);
  color: var(--warning);
}

.stat-icon.total {
  background: var(--primary-light);
  color: var(--primary);
}

.stat-info {
  display: flex;
  flex-direction: column;
}

.stat-value {
  font-size: 24px;
  font-weight: 700;
  color: var(--gray-900);
  line-height: 1;
}

.stat-label {
  font-size: 13px;
  color: var(--gray-500);
  margin-top: 4px;
}

/* ===== TABLE ===== */
.table {
  width: 100%;
  border-collapse: collapse;
}

.table th {
  text-align: left;
  padding: 12px 24px;
  font-size: 12px;
  font-weight: 600;
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  background: var(--gray-50);
  border-bottom: 1px solid var(--gray-200);
}

.table td {
  padding: 14px 24px;
  font-size: 14px;
  color: var(--gray-700);
  border-bottom: 1px solid var(--gray-100);
}

.table tbody tr:hover {
  background: var(--gray-50);
}

.table .empty-row:hover {
  background: transparent;
}

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 48px 0;
  color: var(--gray-400);
  gap: 8px;
}

.empty-state p {
  font-size: 15px;
  font-weight: 500;
  color: var(--gray-500);
}

.empty-state span {
  font-size: 13px;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ===== STATUS BADGE ===== */
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 500;
}

.status-badge.sent {
  background: var(--success-light);
  color: var(--success);
  border: 1px solid var(--success-border);
}

.status-badge.failed {
  background: var(--danger-light);
  color: var(--danger);
  border: 1px solid var(--danger-border);
}

.status-badge.pending {
  background: var(--warning-light);
  color: var(--warning);
  border: 1px solid var(--warning-border);
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

/* ===== MODAL ===== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.5);
  display: grid;
  place-items: center;
  z-index: 200;
  backdrop-filter: blur(4px);
}

.modal {
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  width: 520px;
  max-height: 80vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.modal-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--gray-200);
}

.modal-header h3 {
  font-size: 16px;
  font-weight: 600;
}

.modal-body {
  padding: 24px;
  overflow-y: auto;
}

.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--gray-200);
  display: flex;
  justify-content: flex-end;
  background: var(--gray-50);
}

/* ===== PROGRESS ===== */
.progress-bar-container {
  width: 100%;
  height: 8px;
  background: var(--gray-200);
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 12px;
}

.progress-bar {
  height: 100%;
  width: 0%;
  background: var(--primary);
  border-radius: 4px;
  transition: width 0.4s ease;
}

.progress-text {
  font-size: 13px;
  color: var(--gray-500);
  margin-bottom: 16px;
}

.progress-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-height: 300px;
  overflow-y: auto;
}

.progress-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  background: var(--gray-50);
  border: 1px solid var(--gray-100);
}

.progress-item.success {
  background: var(--success-light);
  border-color: var(--success-border);
  color: var(--success);
}

.progress-item.error {
  background: var(--danger-light);
  border-color: var(--danger-border);
  color: var(--danger);
}

.progress-item.waiting {
  color: var(--gray-400);
}

.progress-item .emp-name-progress {
  flex: 1;
  color: var(--gray-700);
}

.progress-item.success .emp-name-progress {
  color: var(--success);
}

.progress-item.error .emp-name-progress {
  color: var(--danger);
}

/* ===== HEADER FILTERS ===== */
.header-filters {
  display: flex;
  gap: 10px;
}

/* ===== UTILITY ===== */
.hidden {
  display: none !important;
}

/* ===== SCROLLBAR ===== */
.employee-list::-webkit-scrollbar,
.progress-list::-webkit-scrollbar {
  width: 6px;
}

.employee-list::-webkit-scrollbar-track,
.progress-list::-webkit-scrollbar-track {
  background: transparent;
}

.employee-list::-webkit-scrollbar-thumb,
.progress-list::-webkit-scrollbar-thumb {
  background: var(--gray-300);
  border-radius: 3px;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .sidebar {
    display: none;
  }

  .main {
    margin-left: 0;
  }

  .header {
    padding: 0 16px;
  }

  .page {
    padding: 16px;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .radio-group {
    grid-template-columns: 1fr;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .employee-list {
    grid-template-columns: 1fr;
  }

  .card-footer {
    flex-direction: column;
    gap: 12px;
    align-items: stretch;
  }

  .card-footer .btn-primary {
    justify-content: center;
  }

  .employee-toolbar {
    flex-direction: column;
    gap: 10px;
    align-items: stretch;
  }

  .search-box {
    width: 100%;
  }

  .table th,
  .table td {
    padding: 10px 14px;
    font-size: 12px;
  }
}