/* Tri-TdL design tokens — DESIGN.md (UX-DR2, UX-DR3) */

:root,
[data-theme="dark"] {
  color-scheme: dark;
  --color-background: #1a1c1e;
  --color-surface: #24272b;
  --color-surface-raised: #2c3036;
  --color-on-background: #e6e3de;
  --color-on-surface-muted: #9b9790;
  --color-border: #3a3f46;
  --color-accent: #8fa89a;
  --color-accent-foreground: #141614;
  --color-highlight: #c4a574;
  --color-highlight-foreground: #1a1c1e;
  --color-keep: #8fa89a;
  --color-wait: #c4a574;
  --color-error: #c97b73;
  --color-on-error: #1a1c1e;
  --color-tab-disabled: #6e6a64;
  --font-sans: "IBM Plex Sans", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;
  --text-body-size: 15px;
  --text-label-size: 13px;
  --text-title-size: 18px;
  --text-mono-size: 13px;
  --rounded-sm: 4px;
  --rounded-md: 8px;
  --spacing-3: 12px;
}

[data-theme="light"] {
  color-scheme: light;
  --color-background: #f4f2ee;
  --color-surface: #ffffff;
  --color-surface-raised: #ffffff;
  --color-on-background: #1a1c1e;
  --color-on-surface-muted: #5c5852;
  --color-border: #d5d0c8;
  --color-accent: #4f6f62;
  --color-accent-foreground: #f4f2ee;
  --color-highlight: #8a6d3b;
  --color-highlight-foreground: #f4f2ee;
  --color-keep: #4f6f62;
  --color-wait: #8a6d3b;
  --color-error: #c97b73;
  --color-on-error: #1a1c1e;
  --color-tab-disabled: #6e6a64;
}

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

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--text-body-size);
  font-weight: 400;
  line-height: 1.45;
  background: var(--color-background);
  color: var(--color-on-background);
}

.text-label {
  font-size: var(--text-label-size);
  font-weight: 500;
  line-height: 1.3;
}

.text-title {
  font-size: var(--text-title-size);
  font-weight: 600;
  line-height: 1.25;
}

.text-mono {
  font-family: var(--font-mono);
  font-size: var(--text-mono-size);
  font-weight: 400;
  line-height: 1.4;
}

.viewport-warning {
  display: none;
  padding: var(--spacing-3);
  background: var(--color-surface-raised);
  color: var(--color-on-background);
  border-bottom: 1px solid var(--color-border);
  font-size: var(--text-label-size);
  text-align: center;
}

@media (max-width: 1279px) {
  .viewport-warning {
    display: block;
  }
}

.app-shell {
  min-width: 1280px;
}

.chrome {
  position: relative;
  padding: var(--spacing-3) calc(var(--spacing-3) * 2) 0;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
}

.chrome-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-3);
  margin-bottom: var(--spacing-3);
}

.chrome-title {
  margin: 0;
  font-size: var(--text-title-size);
  font-weight: 600;
  line-height: 1.25;
}

.chrome-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
}

.product-versions {
  display: flex;
  gap: calc(var(--spacing-3) / 2);
  font-size: var(--text-label-size);
  letter-spacing: 0.04em;
}

.product-version {
  padding: 2px 6px;
  border: 1px solid var(--color-border);
  border-radius: var(--rounded-sm);
  color: var(--color-on-surface-muted);
  font-variant-numeric: tabular-nums;
}

.theme-switch {
  padding: 4px 10px;
  border: 1px solid var(--color-border);
  border-radius: var(--rounded-md);
  background: var(--color-surface-raised);
  color: var(--color-on-background);
  font-family: var(--font-sans);
  font-size: var(--text-label-size);
  font-weight: 500;
  line-height: 1.3;
  cursor: pointer;
}

.theme-switch:hover {
  border-color: var(--color-accent);
}

.theme-switch:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.tab-bar {
  display: flex;
  gap: calc(var(--spacing-3) + 4px);
}

.tab {
  display: inline-block;
  padding: 8px 0 10px;
  font-size: var(--text-body-size);
  line-height: 1.2;
  user-select: none;
}

.tab-active {
  color: var(--color-on-background);
  border-bottom: 2px solid var(--color-accent);
  font-weight: 600;
}

.tab-disabled {
  color: var(--color-tab-disabled);
  cursor: default;
}

.tab-disabled:hover {
  background: transparent;
  color: var(--color-tab-disabled);
}

.chrome-tooltip {
  position: absolute;
  z-index: 10;
  max-width: 16rem;
  padding: 8px var(--spacing-3);
  border: 1px solid var(--color-border);
  border-radius: var(--rounded-sm);
  background: var(--color-surface-raised);
  color: var(--color-on-background);
  font-size: var(--text-label-size);
  line-height: 1.35;
  pointer-events: none;
  white-space: normal;
}

.surface-raised {
  background: var(--color-surface-raised);
}

main {
  padding: calc(var(--spacing-3) * 2);
}

.reading-order {
  display: grid;
  gap: var(--spacing-3);
  max-width: 48rem;
}

.reading-order label {
  display: block;
  font-size: var(--text-label-size);
  font-weight: 500;
  color: var(--color-on-surface-muted);
  margin-bottom: 4px;
}

.reading-order input[type="search"] {
  width: 100%;
  padding: 8px var(--spacing-3);
  border: 1px solid var(--color-border);
  border-radius: var(--rounded-sm);
  background: var(--color-surface);
  color: var(--color-on-background);
  font-family: var(--font-sans);
  font-size: var(--text-body-size);
}

.placeholder-region {
  padding: var(--spacing-3) var(--spacing-3);
  border: 1px dashed var(--color-border);
  border-radius: var(--rounded-sm);
  color: var(--color-on-surface-muted);
  font-size: var(--text-label-size);
  outline: none;
}

.placeholder-region:focus-visible {
  border-color: var(--color-accent);
}

.status {
  font-size: var(--text-label-size);
  color: var(--color-on-surface-muted);
  margin-top: var(--spacing-3);
}

.sample-mono {
  margin-top: 4px;
}

/* Login */

.login-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
}

.login-form {
  width: min(100% - 2rem, 22rem);
  padding: calc(var(--spacing-3) * 2);
  border: 1px solid var(--color-border);
  border-radius: var(--rounded-md);
  background: var(--color-surface);
}

.login-form h1 {
  margin: 0 0 var(--spacing-3);
  font-size: var(--text-title-size);
  font-weight: 600;
}

.login-form label {
  display: block;
  margin-bottom: var(--spacing-3);
  font-size: var(--text-label-size);
}

.login-form input {
  width: 100%;
  margin-top: 4px;
  padding: 8px 10px;
  border: 1px solid var(--color-border);
  border-radius: var(--rounded-sm);
  background: var(--color-background);
  color: var(--color-on-background);
  font-family: var(--font-sans);
  font-size: var(--text-body-size);
  box-sizing: border-box;
}

.login-form button[type="submit"] {
  width: 100%;
  margin-top: 8px;
  padding: 10px;
  border: none;
  border-radius: var(--rounded-md);
  background: var(--color-accent);
  color: var(--color-accent-foreground);
  font-family: var(--font-sans);
  font-size: var(--text-body-size);
  font-weight: 600;
  cursor: pointer;
}

.login-error {
  margin: 0 0 var(--spacing-3);
  padding: 8px 10px;
  border-radius: var(--rounded-sm);
  background: var(--color-error);
  color: var(--color-on-error);
  font-size: var(--text-label-size);
}