/* ========================================
   CSS VARIABLES (Fallback values)
   These are overridden by Flutter theme injection
   ======================================== */

:root {
  /* Primary colors - neutral grey */
  --color-primary: #616161;
  --color-on-primary: #ffffff;
  --color-primary-container: #e0e0e0;
  --color-on-primary-container: #424242;
  
  /* Secondary colors - neutral grey */
  --color-secondary: #757575;
  --color-on-secondary: #ffffff;
  
  /* Surface levels - light neutral fallbacks */
  --color-surface-1: #F5F5F5;
  --color-surface-2: #FFFFFF;
  --color-surface-3: #EEEEEE;
  --color-surface-4: #E5E5E5;
  
  /* Surface text */
  --color-on-surface: #1C1C1C;
  --color-on-surface-variant: #666666;
  
  /* Outline colors */
  --color-outline: #9e9e9e;
  --color-outline-variant: #e0e0e0;
  
  /* Error colors - standard red */
  --color-error: #d32f2f;
  --color-on-error: #FFFFFF;
  
  /* Typography - Default sizes (14px base) */
  --font-sm: 12px;
  --font-md: 14px;
  --font-lg: 16px;
  --font-xl: 22px;
  
  /* Spacing - Default sizes */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  
  /* Border Radius - Fixed (not scaled) */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  
  /* Icon Sizes - Fixed (not scaled) */
  --icon-sm: 16px;
  --icon-md: 24px;
  --icon-lg: 32px;
  
  /* Border Widths - Fixed */
  --border-thin: 1px;
  --border-thick: 2px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-user-select: text;
  user-select: text;
}
body {
  font-family: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: var(--font-md);
  color: var(--color-on-surface);
  background-color: var(--color-surface-1);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
*::selection {
  background-color: var(--color-primary) !important;
  color: var(--color-on-primary) !important;
}

/* ========================================
   MATERIAL ICONS
   ======================================== */

.material-icons {
  font-family: 'Material Icons';
  font-weight: normal;
  font-style: normal;
  display: inline-block;
  line-height: 1;
  vertical-align: middle;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: 'liga';
}

/* Icon size variants */
.icon-sm { font-size: var(--icon-sm); }
.icon-md { font-size: var(--icon-md); }
.icon-lg { font-size: var(--icon-lg); }

/* ========================================
   BUTTON COMPONENTS
   ======================================== */

button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  font-size: var(--font-md);
  font-weight: 600;
  background-color: var(--color-primary);
  color: var(--color-on-primary);
  border: none;
  border-radius: var(--radius-sm);
  min-height: var(--touch-target);
  cursor: pointer;
  transition: background-color 100ms;
  -webkit-user-select: none;
  user-select: none;
}
button:hover:not(:disabled) {
  opacity: 0.9;
}
button:active:not(:disabled) {
  opacity: 0.8;
}
button:disabled {
  opacity: 0.38;
  cursor: not-allowed;
}
/* Outline variant */
button.btn-outline {
  background-color: var(--color-surface-2);
  color: var(--color-primary);
  border: var(--border-thin) solid var(--color-outline);
}
button.btn-outline:hover:not(:disabled) {
  background-color: var(--color-surface-3);
}
button.btn-outline:active:not(:disabled) {
  background-color: var(--color-surface-4);
}
/* Large size */
button.btn-lg {
  padding: var(--space-md) var(--space-lg);
  font-size: var(--font-lg);
}
button.btn-lg .material-icons {
  font-size: var(--icon-lg);
}

/* Detail components (shared) */
.detail-icon {
  display: flex;
}

.detail-content { flex: 1; }
.detail-label { font-size: var(--font-sm); color: var(--color-on-surface-variant); }
.detail-value { font-size: var(--font-md); color: var(--color-on-surface); }
.detail-trailing { color: var(--color-on-surface-variant); }

/* DetailRow */
.detail-row {
  display: flex;
  align-items: center;
  padding: var(--space-sm) 0;
  gap: var(--space-md);
}

.detail-row.interactive {
  cursor: pointer;
}

.detail-row.interactive:hover {
  opacity: 0.8;
}

.detail-row .detail-icon {
  color: var(--color-primary);
}

.detail-row .detail-content {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.detail-row .detail-label {
  font-size: var(--font-sm);
  color: var(--color-on-surface-variant);
}

.detail-row .detail-value {
  font-size: var(--font-md);
  color: var(--color-on-surface);
}

.detail-row .detail-trailing {
  color: var(--color-on-surface-variant);
}


/* ========================================
   FORM
   ======================================== */

/* Form inputs (shared) */
label {
  font-size: var(--font-sm);
  color: var(--color-on-surface-variant);
  margin-bottom: var(--space-xs);
  display: block;
}

.field {
  display: flex;
  align-items: center;
  padding: var(--space-sm);
  background-color: var(--color-surface-2);
  border: var(--border-thin) solid var(--color-outline);
  border-radius: var(--radius-sm);
  cursor: text;
}

.field:focus-within {
  outline: 2px solid var(--color-primary);
  outline-offset: -2px;
}

.field.error {
  outline: 2px solid var(--color-error);
  outline-offset: -2px;
}

.field .icon {
  margin-right: var(--space-sm);
  color: var(--color-on-surface-variant);
}

.field input,
.field select,
.field textarea {
  flex: 1;
  font-size: var(--font-md);
  color: var(--color-on-surface);
  background: transparent;
  border: none;
  outline: none;
  pointer-events: auto;
  user-select: text;
  -webkit-user-select: text;
}

.field input::placeholder,
.field textarea::placeholder {
  color: var(--color-on-surface-variant);
  opacity: 0.5;
}

.hint {
  min-height: var(--space-lg);
  padding-top: var(--space-xs);
  font-size: var(--font-sm);
  color: var(--color-on-surface-variant);
}

.hint.error {
  color: var(--color-error);
}

/* ========================================
   UTILITY CLASSES
   ======================================== */

/* Spacing utilities */
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }

.p-sm { padding: var(--space-sm); }
.p-md { padding: var(--space-md); }
.p-lg { padding: var(--space-lg); }

.m-sm { margin: var(--space-sm); }
.m-md { margin: var(--space-md); }
.m-lg { margin: var(--space-lg); }

/* Text utilities */
.text-sm { font-size: var(--font-sm); }
.text-md { font-size: var(--font-md); }
.text-lg { font-size: var(--font-lg); }
.text-xl { font-size: var(--font-xl); }

/* Border radius utilities */
.rounded-sm { border-radius: var(--radius-sm); }
.rounded-md { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }


/* ========================================
   ACCESSIBILITY
   ======================================== */

/* Focus visible styles */
*:focus-visible {
  outline: var(--border-thick) solid var(--color-primary);
  outline-offset: 2px;
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}