:root {
  --primary-color: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #eff6ff;
  --secondary-color: #475569;
  --background-color: #f8fafc;
  --card-bg: #ffffff;
  --text-main: #0f172a;
  --text-muted: #64748b;
  --border-color: #e2e8f0;
  --success-color: #10b981;
  --success-light: #ecfdf5;
  --warning-color: #f59e0b;
  --warning-light: #fef3c7;
  --error-color: #ef4444;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --font-family: 'Inter', 'Sarabun', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

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

body {
  font-family: var(--font-family);
  background-color: var(--background-color);
  color: var(--text-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Navbar */
.navbar {
  background-color: var(--card-bg);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.nav-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  height: 72px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-logo {
  background-color: var(--primary-light);
  color: var(--primary-color);
  width: 42px;
  height: 42px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
}

.brand-logo i {
  width: 24px;
  height: 24px;
}

.brand-name h1 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.2;
}

.brand-name span {
  font-size: 12px;
  color: var(--text-muted);
}

.nav-links {
  display: flex;
  gap: 8px;
}

.nav-btn {
  background: none;
  border: 1px solid transparent;
  color: var(--text-muted);
  padding: 10px 16px;
  font-size: 14px;
  font-weight: 500;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: all 0.2s ease;
}

.nav-btn i {
  width: 18px;
  height: 18px;
}

.nav-btn:hover {
  background-color: var(--background-color);
  color: var(--text-main);
}

.nav-btn.active {
  background-color: var(--primary-light);
  color: var(--primary-color);
  font-weight: 600;
}

/* Main Layout */
.main-content {
  max-width: 1280px;
  margin: 32px auto;
  padding: 0 24px;
}

.view-section {
  display: none;
}

.view-section.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Summary Cards */
.summary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-bottom: 24px;
}

.summary-card {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  align-items: center;
  gap: 20px;
  box-shadow: var(--shadow-sm);
}

.summary-card .card-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.summary-card .card-icon i {
  width: 28px;
  height: 28px;
}

.summary-card .card-info {
  display: flex;
  flex-direction: column;
}

.summary-card .card-label {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 500;
}

.summary-card .card-value {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-main);
}

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

.card-active .card-icon {
  background-color: #ecfdf5;
  color: #10b981;
}

.card-rescheduled .card-icon {
  background-color: #fffbeb;
  color: #f59e0b;
}

/* Controls block */
.controls-card {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
}

.search-bar {
  position: relative;
  flex: 1;
  min-width: 300px;
  max-width: 620px; /* Widened as per stocktracker style settings */
}

.search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  width: 18px;
  height: 18px;
  pointer-events: none;
}

.search-bar input {
  width: 100%;
  padding: 10px 14px 10px 42px;
  font-size: 14px;
  font-family: var(--font-family);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background-color: var(--background-color);
  color: var(--text-main);
  transition: all 0.2s ease;
}

.search-bar input:focus {
  outline: none;
  border-color: var(--primary-color);
  background-color: #fff;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.filter-group {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

select {
  padding: 10px 14px;
  font-size: 14px;
  font-family: var(--font-family);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background-color: #fff;
  color: var(--text-main);
  cursor: pointer;
  transition: all 0.2s ease;
}

select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

/* Buttons */
.btn {
  padding: 10px 18px;
  font-size: 14px;
  font-weight: 500;
  font-family: var(--font-family);
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all 0.2s ease;
}

.btn i {
  width: 16px;
  height: 16px;
}

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

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

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

.btn-secondary:hover {
  background-color: var(--background-color);
  border-color: #cbd5e1;
}

.btn-sm {
  padding: 6px 12px;
  font-size: 12px;
  border-radius: 4px;
}

.btn-danger-link {
  background: none;
  border: none;
  color: var(--error-color);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 13px;
  font-weight: 500;
  font-family: var(--font-family);
}

.btn-danger-link:hover {
  text-decoration: underline;
}

.btn-primary-link {
  background: none;
  border: none;
  color: var(--primary-color);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 13px;
  font-weight: 500;
  font-family: var(--font-family);
}

.btn-primary-link:hover {
  text-decoration: underline;
}

/* Data Table */
.table-card {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.table-responsive {
  width: 100%;
  overflow-x: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 14px;
}

.data-table th {
  background-color: #f8fafc;
  color: var(--text-muted);
  font-weight: 600;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-color);
  white-space: nowrap;
  position: relative;
}

.data-table th.sortable {
  cursor: pointer;
  user-select: none;
}

.data-table th.sortable:hover {
  color: var(--text-main);
  background-color: #f1f5f9;
}

.resizer {
  position: absolute;
  top: 0;
  right: 0;
  width: 6px;
  cursor: col-resize;
  user-select: none;
  height: 100%;
  z-index: 10;
}

.resizer:hover,
.resizing .resizer {
  background-color: var(--primary-color, #2563eb);
  opacity: 0.5;
}

.data-table th i {
  display: inline-block;
  width: 14px;
  height: 14px;
  vertical-align: middle;
  margin-left: 4px;
}

.data-table td {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-main);
  vertical-align: middle;
}

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

.data-table tbody tr:hover {
  background-color: #f8fafc;
}

.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 8px;
  font-size: 12px;
  font-weight: 600;
  border-radius: 9999px;
  line-height: 1;
}

.badge-active {
  background-color: var(--success-light);
  color: var(--success-color);
}

.badge-rescheduled {
  background-color: var(--warning-light);
  color: var(--warning-color);
}

.badge-cancelled {
  background-color: #f1f5f9;
  color: var(--secondary-color);
}

/* Link Style */
.calendar-link {
  color: var(--primary-color);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-weight: 500;
}

.calendar-link:hover {
  text-decoration: underline;
}

/* Settings Page */
.settings-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(480px, 1fr));
  gap: 32px;
  align-items: start;
}

.settings-card {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 32px;
  box-shadow: var(--shadow-sm);
}

.card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}

.card-header i {
  color: var(--primary-color);
  width: 24px;
  height: 24px;
}

.card-header h2 {
  font-size: 18px;
  font-weight: 600;
}

.settings-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-main);
}

.form-group input[type="text"],
.form-group input[type="password"],
.form-group input[type="url"],
.form-group input[type="date"],
.form-group input[type="time"] {
  padding: 10px 14px;
  font-size: 14px;
  font-family: var(--font-family);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background-color: var(--background-color);
  color: var(--text-main);
  transition: all 0.2s ease;
}

.form-group input:focus {
  outline: none;
  border-color: var(--primary-color);
  background-color: #fff;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

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

.divider {
  border: 0;
  border-top: 1px solid var(--border-color);
  margin: 24px 0;
}

/* Switch UI */
.inline-toggle {
  flex-direction: row;
  align-items: center;
  gap: 16px;
  padding: 8px 0;
}

.switch-container {
  position: relative;
  display: inline-block;
  width: 50px;
  height: 26px;
  flex-shrink: 0;
}

.switch-container input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: #cbd5e1;
  transition: .3s;
}

.slider:before {
  position: absolute;
  content: "";
  height: 18px;
  width: 18px;
  left: 4px;
  bottom: 4px;
  background-color: white;
  transition: .3s;
}

input:checked + .slider {
  background-color: var(--primary-color);
}

input:focus + .slider {
  box-shadow: 0 0 1px var(--primary-color);
}

input:checked + .slider:before {
  transform: translateX(24px);
}

.slider.round {
  border-radius: 34px;
}

.slider.round:before {
  border-radius: 50%;
}

.toggle-text {
  display: flex;
  flex-direction: column;
}

.toggle-title {
  font-size: 14px;
  font-weight: 600;
}

.toggle-desc {
  font-size: 12px;
  color: var(--text-muted);
}

/* Inline Form Settings */
.inline-add-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
  background-color: var(--background-color);
  padding: 20px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
}

.form-row {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.flex-1 { flex: 1; min-width: 120px; }
.flex-2 { flex: 2; min-width: 200px; }

.form-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

.settings-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.settings-table th {
  text-align: left;
  padding: 10px 8px;
  color: var(--text-muted);
  border-bottom: 2px solid var(--border-color);
}

.settings-table td {
  padding: 12px 8px;
  border-bottom: 1px solid var(--border-color);
  vertical-align: top;
  max-width: 200px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.settings-table tr:hover {
  background-color: var(--background-color);
}

/* Modal Styling */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(15, 23, 42, 0.4);
  backdrop-filter: blur(4px);
  z-index: 200;
  align-items: center;
  justify-content: center;
}

.modal.active {
  display: flex;
  animation: modalFadeIn 0.2s ease-out;
}

@keyframes modalFadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.modal-content {
  background-color: #fff;
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 500px;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  animation: modalSlideUp 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

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

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

.modal-header h3 {
  font-size: 16px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}

.modal-close {
  background: none;
  border: none;
  font-size: 24px;
  cursor: pointer;
  color: var(--text-muted);
  line-height: 1;
}

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

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

.info-banner {
  background-color: var(--background-color);
  border: 1px solid var(--border-color);
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 8px 16px;
  font-size: 13px;
}

.info-banner .label {
  color: var(--text-muted);
  font-weight: 500;
}

.info-banner .value {
  font-weight: 600;
  color: var(--text-main);
}

.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  background-color: #f8fafc;
}

/* Toast */
.toast {
  visibility: hidden;
  min-width: 250px;
  background-color: var(--text-main);
  color: #fff;
  text-align: center;
  border-radius: var(--radius-sm);
  padding: 12px 24px;
  position: fixed;
  z-index: 300;
  left: 50%;
  bottom: 30px;
  transform: translateX(-50%);
  font-size: 14px;
  font-weight: 500;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  transition: opacity 0.3s, visibility 0.3s;
}

.toast.show {
  visibility: visible;
  opacity: 1;
}

/* Responsive */
@media (max-width: 768px) {
  .nav-container {
    flex-direction: column;
    height: auto;
    padding: 16px;
    gap: 16px;
  }
  
  .settings-grid {
    grid-template-columns: 1fr;
  }
  
  .controls-card {
    flex-direction: column;
    align-items: stretch;
  }
  
  .search-bar {
    max-width: none;
    min-width: unset;
  }
  
  .filter-group {
    justify-content: space-between;
  }
  
  .filter-group select, .filter-group button {
    flex: 1;
  }
}