:root {
  --hue-primary: 260;
  --hue-success: 150;
  --hue-danger: 0;
  --hue-warning: 35;
  --hue-gray: 220;

  --color-bg-base: hsl(var(--hue-gray), 20%, 10%);
  --color-bg-surface: hsl(var(--hue-gray), 15%, 16%);
  --color-bg-surface-hover: hsl(var(--hue-gray), 15%, 22%);
  --color-bg-input: hsl(var(--hue-gray), 15%, 12%);

  --color-text-main: hsl(var(--hue-gray), 10%, 95%);
  --color-text-muted: hsl(var(--hue-gray), 10%, 65%);
  --color-border: hsl(var(--hue-gray), 15%, 25%);

  --color-primary: hsl(var(--hue-primary), 70%, 65%);
  --color-primary-hover: hsl(var(--hue-primary), 70%, 75%);
  --color-primary-fg: hsl(var(--hue-primary), 100%, 98%);

  --color-success: hsl(var(--hue-success), 60%, 45%);
  --color-success-bg: hsl(var(--hue-success), 60%, 15%);
  --color-success-fg: hsl(var(--hue-success), 80%, 85%);

  --color-danger: hsl(var(--hue-danger), 70%, 55%);
  --color-danger-bg: hsl(var(--hue-danger), 70%, 15%);
  --color-danger-fg: hsl(var(--hue-danger), 90%, 90%);

  --color-warning: hsl(var(--hue-warning), 80%, 50%);
  --color-warning-bg: hsl(var(--hue-warning), 80%, 15%);
  --color-warning-fg: hsl(var(--hue-warning), 90%, 90%);

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.3);

  --font-family: 'Atkinson Hyperlegible', 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-family);
  background-color: var(--color-bg-base);
  color: var(--color-text-main);
  line-height: 1.6;
  min-height: 100vh;
}

h1,
h2,
h3,
h4 {
  margin-top: 0;
  line-height: 1.2;
}

h1 {
  font-size: 2rem;
}

h2 {
  font-size: 1.5rem;
}

a {
  color: var(--color-primary);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem 1rem 1rem;
}

.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

.items-center {
  align-items: center;
}

.justify-between {
  justify-content: space-between;
}

.gap-1 {
  gap: 0.25rem;
}

.gap-2 {
  gap: 0.5rem;
}

.gap-4 {
  gap: 1rem;
}

.mt-4 {
  margin-top: 1rem;
}

.mb-4 {
  margin-bottom: 1rem;
}

.text-center {
  text-align: center;
}

.hidden {
  display: none !important;
}

.card {
  background-color: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  box-shadow: var(--shadow-md);
  margin-bottom: 1.5rem;
}

.card-header {
  margin-bottom: 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--color-border);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text-main);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  font-family: inherit;
  font-weight: 600;
  font-size: 0.9rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-bg-base);
}

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

.btn-secondary {
  background-color: var(--color-bg-surface-hover);
  color: var(--color-text-main);
  border-color: var(--color-border);
}

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

.btn-danger {
  background-color: var(--color-danger-bg);
  color: var(--color-danger);
  border-color: var(--color-danger-bg);
}

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

.btn-ghost {
  background-color: transparent;
  color: var(--color-text-muted);
}

.btn-ghost:hover {
  background-color: var(--color-bg-surface-hover);
  color: var(--color-text-main);
}

.btn-icon {
  padding: 0.5rem;
  border-radius: var(--radius-sm);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.form-label {
  display: block;
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.form-input,
.form-select {
  margin-bottom: 1rem;
  width: 100%;
  padding: 0.6rem;
  background-color: var(--color-bg-input);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text-main);
  font-family: inherit;
  transition: border-color 0.2s;
}

.form-input:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-primary);
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.6rem;
  border-radius: 99px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-success {
  background: var(--color-success-bg);
  color: var(--color-success-fg);
}

.badge-warning {
  background: var(--color-warning-bg);
  color: var(--color-warning-fg);
}

.badge-danger {
  background: var(--color-danger-bg);
  color: var(--color-danger-fg);
}

.badge-neutral {
  background: var(--color-bg-surface-hover);
  color: var(--color-text-muted);
}

.source-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem;
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  margin-bottom: 0.75rem;
  border-radius: var(--radius-md);
  transition: border-color 0.2s;
}

.source-item:hover {
  border-color: var(--color-primary);
}

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

.source-meta {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-top: 0.25rem;
}

.source-actions {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.grid-responsive {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 1.5rem;
}

.grid-dashboard {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.stat-card {
  background-color: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: transform 0.2s, box-shadow 0.2s;
}

.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary);
}

.stat-icon {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  opacity: 0.2;
  color: var(--color-text-main);
}

.stat-value {
  font-size: 2rem;
  font-weight: bold;
  margin-bottom: 0.25rem;
  color: var(--color-text-main);
}

.stat-label {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  font-weight: 500;
}

.stat-link {
  margin-top: 1rem;
  font-size: 0.85rem;
  color: var(--color-primary);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}


@media (min-width: 769px) {
  .menu-toggle {
    display: none !important;
  }

  .nav-links {
    display: flex !important;
    flex-direction: row;
    gap: 1.5rem;
  }
}

.stat-card.has-errors {
  border-color: var(--color-danger);
}

.stat-card.has-errors .stat-icon {
  opacity: 1;
  color: var(--color-danger);
}

.stat-card.has-errors .stat-value {
  color: var(--color-danger);
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: bold;
  font-size: 1.25rem;
  color: var(--color-primary-fg);
  text-decoration: none;
}

.navbar-logo {
  height: 32px;
}


@media (max-width: 768px) {
  .menu-toggle {
    display: block !important;
  }

  .nav-links {
    display: none !important;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-bg-surface);
    padding: 1rem;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
    gap: 1rem !important;
    z-index: 100;
  }

  .nav-links.active {
    display: flex !important;
  }

  .nav-link {
    display: block;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--color-border);
  }

  .nav-link:last-child {
    border-bottom: none;
  }

  .source-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }

  .source-actions {
    width: 100%;
    display: flex;
    flex-direction: row;
    justify-content: flex-start;
    gap: 0.5rem;
  }

  .source-info {
    width: 100%;
  }

  .grid-responsive {
    grid-template-columns: 1fr !important;
  }

  .source-info .flex.items-center.gap-2 {
    width: 100%;
    flex-direction: column;
    justify-content: flex-start;
    align-items: flex-start;
    margin-bottom: 0.5rem;
  }

  .mobile-equal-width {
    flex-direction: column;
  }

  .mobile-equal-width form,
  .mobile-equal-width .btn {
    width: 100%;
  }
}

.toast-notification {
  position: fixed;
  top: 20px;
  right: 20px;
  background-color: var(--color-text-main);
  color: var(--color-bg-base);
  padding: 20px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  z-index: 1000;
  display: flex;
  align-items: flex-start;
  gap: 15px;
  max-width: 350px;
  border-left: 5px solid var(--color-danger);
}

.toast-content {
  flex: 1;
}

.toast-title {
  margin: 0 0 8px 0;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-bg-base);
}

.toast-message {
  margin: 0;
  font-size: 14px;
  color: var(--color-bg-surface);
  line-height: 1.4;
}

.toast-link {
  font-size: 14px;
  color: var(--color-danger);
  font-weight: bold;
  display: inline-block;
  margin-top: 10px;
  text-decoration: none;
}

.toast-close {
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  color: var(--color-border);
  margin-top: 2px;
}

.exclusion-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  gap: 1rem;
}

.exclusion-search-container {
  min-width: 250px;
}

.exclusion-list-empty,
.exclusion-list-error {
  text-align: center;
  padding: 2rem;
}

.exclusion-list-error {
  color: var(--color-danger);
}

.exclusion-item {
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.75rem;
  padding: 1rem;
  gap: 1rem;
}

.exclusion-item>div {
  flex: 1;
  min-width: 0;
}

.exclusion-delete-btn {
  margin-left: 0;
  flex-shrink: 0;
}

.pagination-controls {
  display: flex;
  justify-content: center;
  align-items: center;
  margin-top: 2.5rem;
  gap: 1rem;
}

.pagination-controls .btn {
  min-width: 40px;
}

@media (max-width: 768px) {
  .exclusion-controls {
    flex-direction: column;
    align-items: stretch;
    gap: 1rem;
  }

  .exclusion-search-container {
    width: 100%;
  }

  .toast-notification {
    bottom: 20px;
    top: auto;
    right: 20px;
    left: 20px;
    max-width: none;
  }
}

/* UI Refactoring Additions */
.u-margin-top-small {
  margin-top: 0.5rem;
}

.qr-code-container {
  text-align: center;
  margin: 20px 0;
}

.qr-code-img {
  border: 1px solid var(--color-border);
  padding: 10px;
  background: white;
  /* Ensure QR code is readable in dark mode */
}

.login-secondary-actions {
  margin-top: 1rem;
  text-align: center;
  border-top: 1px solid var(--color-border);
  padding-top: 1rem;
}

.login-secondary-actions .text-muted {
  font-size: 0.8rem;
  margin-top: 0.5rem;
}

.text-danger {
  color: var(--color-danger);
}

.text-success {
  color: var(--color-success);
}

.justify-center {
  justify-content: center;
}

.auth-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
  padding-top: 2rem;
}

.auth-card {
  width: 100%;
  max-width: 400px;
}