/**
 * Feezless Design System - Consumer Token & Component Stylesheet
 * Generated / derived from central references: TOKENS.md, DESIGN.md, COMPONENTS.md
 * Source of truth: .agents/skills/feezless-design-system-migration/references/
 */

:root {
  /* ==========================================================================
     color.primitive
     ========================================================================== */
  --ds-color-primitive-blue-50: #EAF3FF;
  --ds-color-primitive-blue-100: #D9E8FF;
  --ds-color-primitive-blue-500: #1877F2;
  --ds-color-primitive-blue-600: #1765CC;
  --ds-color-primitive-blue-700: #1457B0;
  --ds-color-primitive-gray-0: #ffffff;
  --ds-color-primitive-gray-50: #F2F4F7;
  --ds-color-primitive-gray-100: #E9EDF2;
  --ds-color-primitive-gray-200: #DADDE1;
  --ds-color-primitive-gray-400: #8A8D91;
  --ds-color-primitive-gray-600: #65676B;
  --ds-color-primitive-gray-900: #1C1E21;
  --ds-color-primitive-red-50: #fef2f2;
  --ds-color-primitive-red-600: #dc2626;
  --ds-color-primitive-green-50: #f0fdf4;
  --ds-color-primitive-green-600: #16a34a;
  --ds-color-primitive-amber-50: #fffbeb;
  --ds-color-primitive-amber-600: #d97706;

  /* ==========================================================================
     color.semantic (Light Theme default)
     ========================================================================== */
  --ds-color-semantic-bg-page: var(--ds-color-primitive-gray-50);
  --ds-color-semantic-bg-surface: var(--ds-color-primitive-gray-0);
  --ds-color-semantic-bg-subtle: var(--ds-color-primitive-gray-100);
  --ds-color-semantic-text-primary: var(--ds-color-primitive-gray-900);
  --ds-color-semantic-text-secondary: var(--ds-color-primitive-gray-600);
  --ds-color-semantic-text-disabled: var(--ds-color-primitive-gray-400);
  --ds-color-semantic-text-on-brand: var(--ds-color-primitive-gray-0);
  --ds-color-semantic-border-default: var(--ds-color-primitive-gray-200);
  --ds-color-semantic-border-strong: var(--ds-color-primitive-gray-600);
  --ds-color-semantic-overlay: #1C1E2180;
  --ds-color-semantic-brand: var(--ds-color-primitive-blue-500);
  --ds-color-semantic-brand-hover: var(--ds-color-primitive-blue-600);
  --ds-color-semantic-brand-subtle: var(--ds-color-primitive-blue-50);
  --ds-color-semantic-focus-ring: var(--ds-color-primitive-blue-500);
  --ds-color-semantic-danger: var(--ds-color-primitive-red-600);
  --ds-color-semantic-danger-subtle: var(--ds-color-primitive-red-50);
  --ds-color-semantic-success: var(--ds-color-primitive-green-600);
  --ds-color-semantic-success-subtle: var(--ds-color-primitive-green-50);
  --ds-color-semantic-warning: var(--ds-color-primitive-amber-600);
  --ds-color-semantic-warning-subtle: var(--ds-color-primitive-amber-50);

  /* ==========================================================================
     space
     ========================================================================== */
  --ds-space-1: 4px;
  --ds-space-2: 8px;
  --ds-space-3: 12px;
  --ds-space-4: 16px;
  --ds-space-6: 24px;
  --ds-space-8: 32px;
  --ds-space-10: 40px;

  /* ==========================================================================
     radius
     ========================================================================== */
  --ds-radius-sm: 4px;
  --ds-radius-md: 10px;
  --ds-radius-lg: 12px;
  --ds-radius-full: 9999px;

  /* ==========================================================================
     shadow
     ========================================================================== */
  --ds-shadow-sm: 0 1px 2px rgba(28, 30, 33, 0.08);
  --ds-shadow-md: 0 4px 12px rgba(28, 30, 33, 0.10);

  /* ==========================================================================
     font
     ========================================================================== */
  --ds-font-family-sans: 'IBM Plex Sans Thai', 'Noto Sans Thai', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --ds-font-family-mono: ui-monospace, 'SF Mono', Menlo, monospace;
  --ds-font-weight-regular: 400;
  --ds-font-weight-medium: 500;
  --ds-font-weight-bold: 700;
  --ds-font-size-xs: 12px;
  --ds-font-size-sm: 14px;
  --ds-font-size-md: 16px;
  --ds-font-size-lg: 20px;
  --ds-font-size-xl: 24px;
  --ds-font-size-2xl: 32px;
  --ds-font-line-height-tight: 1.3;
  --ds-font-line-height-normal: 1.6;
  --ds-font-line-height-thai: 1.75;

  /* ==========================================================================
     motion
     ========================================================================== */
  --ds-motion-instant: 80ms;
  --ds-motion-fast: 120ms;
  --ds-motion-base: 200ms;
  --ds-motion-moderate: 280ms;
  --ds-motion-slow: 350ms;
  --ds-motion-exit: 240ms;
  --ds-motion-ease-out: cubic-bezier(0, 0, 0.2, 1);
  --ds-motion-ease-in: cubic-bezier(0.4, 0, 1, 1);
  --ds-motion-ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --ds-motion-spin: 750ms;

  /* ==========================================================================
     scrollbar
     ========================================================================== */
  --ds-scrollbar-size: 8px;
  --ds-scrollbar-track: transparent;
  --ds-scrollbar-thumb: var(--ds-color-primitive-gray-200);
  --ds-scrollbar-thumbHover: var(--ds-color-primitive-gray-400);
  --ds-scrollbar-radius: var(--ds-radius-full);
  --ds-scrollbar-size-thin: 6px;
}

/* ==========================================================================
   color.semantic (Dark Mode mapping for Canvas & Dark Theme)
   ========================================================================== */
html.dark,
:root.dark,
[data-theme="dark"] {
  --ds-color-semantic-bg-page: #080B12;
  --ds-color-semantic-bg-surface: #0E1524;
  --ds-color-semantic-bg-subtle: #141C2E;
  --ds-color-semantic-text-primary: #F2F4F7;
  --ds-color-semantic-text-secondary: #8A8D91;
  --ds-color-semantic-text-disabled: #65676B;
  --ds-color-semantic-text-on-brand: #ffffff;
  --ds-color-semantic-border-default: rgba(218, 221, 225, 0.12);
  --ds-color-semantic-border-strong: rgba(218, 221, 225, 0.25);
  --ds-color-semantic-overlay: rgba(12, 16, 24, 0.82);
  --ds-color-semantic-brand: var(--ds-color-primitive-blue-500);
  --ds-color-semantic-brand-hover: var(--ds-color-primitive-blue-600);
  --ds-color-semantic-brand-subtle: rgba(24, 119, 242, 0.15);
  --ds-color-semantic-focus-ring: var(--ds-color-primitive-blue-500);
  --ds-color-semantic-danger: var(--ds-color-primitive-red-600);
  --ds-color-semantic-danger-subtle: rgba(220, 38, 38, 0.18);
  --ds-color-semantic-success: var(--ds-color-primitive-green-600);
  --ds-color-semantic-success-subtle: rgba(22, 163, 74, 0.18);
  --ds-color-semantic-warning: var(--ds-color-primitive-amber-600);
  --ds-color-semantic-warning-subtle: rgba(217, 119, 6, 0.18);
  --ds-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4);
  --ds-shadow-md: 0 8px 24px -4px rgba(0, 0, 0, 0.6);
  --ds-scrollbar-thumb: rgba(218, 221, 225, 0.2);
  --ds-scrollbar-thumbHover: rgba(218, 221, 225, 0.35);
}

/* ==========================================================================
   Global Typography and Resets
   ========================================================================== */
body {
  font-family: var(--ds-font-family-sans);
  font-size: var(--ds-font-size-sm);
  line-height: var(--ds-font-line-height-thai);
  color: var(--ds-color-semantic-text-primary);
  background-color: var(--ds-color-semantic-bg-page);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  line-height: var(--ds-font-line-height-tight);
  font-weight: var(--ds-font-weight-bold);
  color: var(--ds-color-semantic-text-primary);
}

p, span, div, label, li {
  line-height: inherit;
}

code, kbd, samp, pre, .font-mono-code {
  font-family: var(--ds-font-family-mono);
  line-height: var(--ds-font-line-height-normal);
}

/* Scrollbars */
::-webkit-scrollbar {
  width: var(--ds-scrollbar-size);
  height: var(--ds-scrollbar-size);
}
::-webkit-scrollbar-track {
  background: var(--ds-scrollbar-track);
}
::-webkit-scrollbar-thumb {
  background: var(--ds-scrollbar-thumb);
  border-radius: var(--ds-scrollbar-radius);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--ds-scrollbar-thumbHover);
}

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

/* ==========================================================================
   ds-button Contract
   variants: primary, secondary, ghost, danger
   sizes: sm, md, lg
   ========================================================================== */
.ds-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--ds-space-2);
  font-family: var(--ds-font-family-sans);
  font-weight: var(--ds-font-weight-medium);
  border-radius: var(--ds-radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  user-select: none;
  transition: background-color var(--ds-motion-fast) var(--ds-motion-ease-out),
              border-color var(--ds-motion-fast) var(--ds-motion-ease-out),
              color var(--ds-motion-fast) var(--ds-motion-ease-out),
              box-shadow var(--ds-motion-fast) var(--ds-motion-ease-out),
              transform var(--ds-motion-instant) var(--ds-motion-ease-out);
}

.ds-btn:active:not(:disabled) {
  transform: scale(0.98);
}

.ds-btn:focus-visible {
  outline: 2px solid var(--ds-color-semantic-focus-ring);
  outline-offset: 2px;
}

.ds-btn:disabled,
.ds-btn[aria-disabled="true"] {
  opacity: 0.55;
  cursor: not-allowed;
  pointer-events: none;
}

/* Button Sizes */
.ds-btn--sm {
  height: 32px;
  padding: 0 var(--ds-space-3);
  font-size: var(--ds-font-size-xs);
  border-radius: var(--ds-radius-sm);
}

.ds-btn--md {
  height: 40px;
  padding: 0 var(--ds-space-4);
  font-size: var(--ds-font-size-sm);
}

.ds-btn--lg {
  height: 48px;
  padding: 0 var(--ds-space-6);
  font-size: var(--ds-font-size-md);
}

/* Button Variants */
.ds-btn--primary {
  background-color: var(--ds-color-semantic-brand);
  color: var(--ds-color-semantic-text-on-brand);
  border-color: transparent;
  box-shadow: var(--ds-shadow-sm);
}
.ds-btn--primary:hover:not(:disabled) {
  background-color: var(--ds-color-semantic-brand-hover);
}

.ds-btn--secondary {
  background-color: var(--ds-color-semantic-bg-surface);
  color: var(--ds-color-semantic-text-primary);
  border-color: var(--ds-color-semantic-border-default);
  box-shadow: var(--ds-shadow-sm);
}
.ds-btn--secondary:hover:not(:disabled) {
  background-color: var(--ds-color-semantic-bg-subtle);
  border-color: var(--ds-color-semantic-border-strong);
}

.ds-btn--ghost {
  background-color: transparent;
  color: var(--ds-color-semantic-text-secondary);
  border-color: transparent;
}
.ds-btn--ghost:hover:not(:disabled) {
  background-color: var(--ds-color-semantic-bg-subtle);
  color: var(--ds-color-semantic-text-primary);
}

.ds-btn--danger {
  background-color: var(--ds-color-semantic-danger-subtle);
  color: var(--ds-color-semantic-danger);
  border-color: rgba(220, 38, 38, 0.3);
}
.ds-btn--danger:hover:not(:disabled) {
  background-color: var(--ds-color-semantic-danger);
  color: var(--ds-color-primitive-gray-0);
}

/* Icon-only button */
.ds-btn--icon-only {
  padding: 0;
  width: 32px;
  height: 32px;
  border-radius: var(--ds-radius-md);
}
.ds-btn--icon-only.ds-btn--sm {
  width: 28px;
  height: 28px;
}

/* ==========================================================================
   ds-badge Contract
   tones: neutral, brand, success, warning, danger
   ========================================================================== */
.ds-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--ds-space-1);
  padding: 2px var(--ds-space-2);
  font-family: var(--ds-font-family-mono);
  font-size: var(--ds-font-size-xs);
  font-weight: var(--ds-font-weight-medium);
  line-height: 1.2;
  border-radius: var(--ds-radius-sm);
  border: 1px solid transparent;
  white-space: nowrap;
}

.ds-badge--neutral {
  background-color: var(--ds-color-semantic-bg-subtle);
  color: var(--ds-color-semantic-text-secondary);
  border-color: var(--ds-color-semantic-border-default);
}

.ds-badge--brand {
  background-color: var(--ds-color-semantic-brand-subtle);
  color: var(--ds-color-semantic-brand);
  border-color: rgba(24, 119, 242, 0.25);
}

.ds-badge--success {
  background-color: var(--ds-color-semantic-success-subtle);
  color: var(--ds-color-semantic-success);
  border-color: rgba(22, 163, 74, 0.25);
}

.ds-badge--warning {
  background-color: var(--ds-color-semantic-warning-subtle);
  color: var(--ds-color-semantic-warning);
  border-color: rgba(217, 119, 6, 0.25);
}

.ds-badge--danger {
  background-color: var(--ds-color-semantic-danger-subtle);
  color: var(--ds-color-semantic-danger);
  border-color: rgba(220, 38, 38, 0.25);
}

/* ==========================================================================
   ds-input, ds-textarea, ds-select Form Controls
   ========================================================================== */
.ds-input,
.ds-textarea,
.ds-select {
  font-family: var(--ds-font-family-sans);
  font-size: var(--ds-font-size-sm);
  line-height: var(--ds-font-line-height-thai);
  color: var(--ds-color-semantic-text-primary);
  background-color: var(--ds-color-semantic-bg-subtle);
  border: 1px solid var(--ds-color-semantic-border-default);
  border-radius: var(--ds-radius-md);
  padding: var(--ds-space-2) var(--ds-space-3);
  width: 100%;
  box-sizing: border-box;
  transition: border-color var(--ds-motion-fast) var(--ds-motion-ease-out),
              box-shadow var(--ds-motion-fast) var(--ds-motion-ease-out);
}

.ds-input:hover:not(:disabled),
.ds-textarea:hover:not(:disabled),
.ds-select:hover:not(:disabled) {
  border-color: var(--ds-color-semantic-border-strong);
}

.ds-input:focus,
.ds-textarea:focus,
.ds-select:focus {
  outline: none;
  border-color: var(--ds-color-semantic-focus-ring);
  box-shadow: 0 0 0 2px var(--ds-color-semantic-brand-subtle);
}

.ds-input:disabled,
.ds-textarea:disabled,
.ds-select:disabled {
  color: var(--ds-color-semantic-text-disabled);
  border-color: var(--ds-color-semantic-border-default);
  cursor: not-allowed;
  opacity: 0.6;
}

.ds-input--code,
.ds-textarea--code {
  font-family: var(--ds-font-family-mono);
  font-size: var(--ds-font-size-xs);
  line-height: var(--ds-font-line-height-normal);
}

/* ==========================================================================
   ds-card Contract
   ========================================================================== */
.ds-card {
  background-color: var(--ds-color-semantic-bg-surface);
  border: 1px solid var(--ds-color-semantic-border-default);
  border-radius: var(--ds-radius-lg);
  box-shadow: var(--ds-shadow-md);
  overflow: hidden;
}

.ds-card-header {
  padding: var(--ds-space-3) var(--ds-space-4);
  border-bottom: 1px solid var(--ds-color-semantic-border-default);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.ds-card-body {
  padding: var(--ds-space-4);
}

.ds-card-footer {
  padding: var(--ds-space-3) var(--ds-space-4);
  border-top: 1px solid var(--ds-color-semantic-border-default);
}

/* ==========================================================================
   ds-modal Contract
   ========================================================================== */
.ds-modal-backdrop {
  position: fixed;
  inset: 0;
  background-color: var(--ds-color-semantic-overlay);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--ds-motion-moderate) var(--ds-motion-ease-out);
}

.ds-modal-backdrop.is-open {
  opacity: 1;
  pointer-events: auto;
}

.ds-modal-dialog {
  background-color: var(--ds-color-semantic-bg-surface);
  border: 1px solid var(--ds-color-semantic-border-strong);
  border-radius: var(--ds-radius-lg);
  box-shadow: var(--ds-shadow-md);
  width: 100%;
  max-width: 540px;
  margin: var(--ds-space-4);
  transform: translateY(10px) scale(0.98);
  transition: transform var(--ds-motion-moderate) var(--ds-motion-ease-out);
  overflow: hidden;
}

.ds-modal-backdrop.is-open .ds-modal-dialog {
  transform: translateY(0) scale(1);
}

/* ==========================================================================
   ds-spinner Contract
   ========================================================================== */
@keyframes ds-spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.ds-spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: var(--ds-radius-full);
  animation: ds-spin var(--ds-motion-spin) linear infinite;
  vertical-align: middle;
}

/* ==========================================================================
   ds-icon helper
   ========================================================================== */
.ds-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.25rem;
  height: 1.25rem;
  stroke-width: 2;
  stroke: currentColor;
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex-shrink: 0;
}