/**
 * RapidRatio — shared global styles (PROJECT_MASTER.md)
 * Vanilla CSS only. Tokens + layout primitives; tool pages extend with page-scoped rules.
 */

/* -------------------------------------------------------------------------- */
/* Design tokens                                                              */
/* -------------------------------------------------------------------------- */

:root {
  /* Colors */
  --color-bg: #fafbfc;
  --color-surface: #ffffff;
  --color-surface-muted: #f4f6f8;
  --color-border: #e5e7eb;
  --color-border-subtle: #eceef1;
  --color-text: #111827;
  --color-text-muted: #6b7280;
  --color-text-faint: #9ca3af;
  --color-primary: #2563eb;
  --color-primary-hover: #1d4ed8;
  --color-primary-soft: rgba(37, 99, 235, 0.08);
  --color-primary-border: rgba(37, 99, 235, 0.22);
  --color-success: #059669;
  --color-warning: #d97706;
  --color-danger: #dc2626;
  --color-focus-ring: rgba(37, 99, 235, 0.35);

  /* Spacing scale (4px base) */
  --space-0: 0;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;

  /* Typography */
  --font-sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, "Noto Sans", "Liberation Sans", sans-serif;
  --font-mono: ui-monospace, "Cascadia Code", "Source Code Pro", Menlo, Consolas,
    monospace;
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --leading-tight: 1.25;
  --leading-normal: 1.5;
  --leading-relaxed: 1.625;

  /* Radii & elevation */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.04);

  /* Global search — capped panel height (§7) */
  --search-listbox-max-height: 15rem;

  /* Layout — CLS: reserved vertical space for calculator outputs */
  --result-panel-height: 8.5rem;
  --result-primary-height: 3.25rem;
  --result-secondary-height: 2.75rem;
  --result-error-height: 2.75rem;
  --result-stack-gap: var(--space-3);

  /* Touch */
  --tap-min: 44px;
}

@media (min-width: 48rem) {
  :root {
    --result-panel-height: 9.5rem;
    --result-primary-height: 3.5rem;
    --result-secondary-height: 3rem;
  }
}

/* -------------------------------------------------------------------------- */
/* Base                                                                       */
/* -------------------------------------------------------------------------- */

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

img,
svg,
video {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--color-primary);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.15em;
}

a:hover {
  color: var(--color-primary-hover);
}

:focus {
  outline: none;
}

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

/* -------------------------------------------------------------------------- */
/* Skip link (a11y)                                                           */
/* -------------------------------------------------------------------------- */

.skip-link {
  position: absolute;
  left: var(--space-4);
  top: var(--space-4);
  z-index: 1000;
  padding: var(--space-2) var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-weight: 600;
  transform: translateY(-200%);
  transition: transform 0.15s ease;
}

.skip-link:focus {
  transform: translateY(0);
}

/* -------------------------------------------------------------------------- */
/* Shell layout                                                               */
/* -------------------------------------------------------------------------- */

.site-header,
.site-footer {
  border-color: var(--color-border-subtle);
  border-style: solid;
  background: var(--color-surface);
}

.site-header {
  position: relative;
  z-index: 50;
  border-bottom-width: 1px;
}

.site-header__bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-start;
  gap: var(--space-4);
  max-width: 72rem;
  margin-inline: auto;
  padding: var(--space-4);
}

.site-nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  margin-left: auto;
  min-width: var(--tap-min);
  min-height: var(--tap-min);
  padding: 0;
  color: var(--color-text);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background 0.12s ease, border-color 0.12s ease;
}

.site-nav-toggle:hover {
  background: var(--color-surface-muted);
}

.site-nav-toggle:focus-visible {
  outline: 2px solid var(--color-focus-ring);
  outline-offset: 2px;
}

.site-nav-toggle__icon {
  display: block;
  flex-shrink: 0;
}

@media (max-width: 47.9375rem) {
  .site-header__bar {
    position: relative;
    justify-content: flex-start;
  }

  .site-nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    display: none;
    position: absolute;
    top: calc(100% + var(--space-1));
    left: var(--space-4);
    right: var(--space-4);
    z-index: 80;
    flex-direction: column;
    flex-wrap: nowrap;
    align-items: stretch;
    gap: 0;
    margin: 0;
    padding: var(--space-2);
    font-size: var(--text-sm);
    font-weight: 500;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm), 0 8px 24px rgba(15, 23, 42, 0.08);
  }

  .site-header__bar.is-menu-open .site-nav {
    display: flex;
  }

  .site-nav a {
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-sm);
  }

  .site-nav a:hover {
    background: var(--color-surface-muted);
  }

  .site-search {
    flex: 1 1 100%;
    max-width: 15rem;
  }
}

@media (min-width: 48rem) {
  .site-header__bar {
    justify-content: space-between;
  }

  .site-nav-toggle {
    display: none;
  }

  .site-nav {
    position: static;
    display: flex !important;
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-4) var(--space-6);
    margin: 0;
    padding: 0;
    font-size: var(--text-sm);
    font-weight: 500;
    background: transparent;
    border: none;
    box-shadow: none;
  }

  .site-header__bar.is-menu-open .site-nav {
    display: flex !important;
  }
}

.site-brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-weight: 700;
  font-size: var(--text-lg);
  letter-spacing: -0.02em;
  color: var(--color-text);
  text-decoration: none;
}

.site-brand:hover {
  color: var(--color-text);
}

.site-brand__mark {
  flex-shrink: 0;
  width: 2rem;
  height: auto;
}

.site-nav a {
  color: var(--color-text-muted);
  text-decoration: none;
}

.site-nav a:hover {
  color: var(--color-primary);
}

.site-footer {
  border-top-width: 1px;
  margin-top: var(--space-16);
  padding: var(--space-8) var(--space-4);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.site-main {
  flex: 1 1 auto;
  width: 100%;
  max-width: 72rem;
  margin-inline: auto;
  padding: var(--space-6) var(--space-4) var(--space-12);
}

/* Home: scientific calculator column (index) */
.home-layout {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: flex-start;
  gap: var(--space-8);
}

.home-layout__calc {
  flex: 0 0 auto;
  width: 100%;
  max-width: 22rem;
}

.home-layout__main {
  flex: 1 1 18rem;
  min-width: 0;
}

/* -------------------------------------------------------------------------- */
/* Tool pages — calculator left, category list right, prose column below     */
/* -------------------------------------------------------------------------- */

.tool-page {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
  width: 100%;
}

.tool-page__header {
  max-width: 42rem;
}

.tool-page__header.stack {
  gap: var(--space-4);
}

.tool-page__body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-6);
  align-items: flex-start;
  width: 100%;
}

@media (min-width: 60rem) {
  .tool-page__body {
    grid-template-columns: minmax(0, 1fr) minmax(13rem, 17.5rem);
    gap: var(--space-8);
  }
}

.tool-page__calc {
  min-width: 0;
  justify-self: start;
  width: 100%;
}

.tool-page__calc-inner {
  width: 100%;
  max-width: 28rem;
}

.tool-page__calc-inner--ratio {
  max-width: 40rem;
}

.tool-page__calc-inner--article {
  max-width: 42rem;
}

/* Shared calculator surface (math tools) */
.tool-card.card--accent {
  width: 100%;
}

/* Ratio calculator — X : Y = A : B row */
.ratio-tool__row {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: var(--space-2) var(--space-3);
}

.ratio-tool__term {
  flex: 1 1 4.5rem;
  min-width: 0;
}

.ratio-tool__term .input {
  width: 100%;
}

.ratio-tool__sep {
  flex: 0 0 auto;
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-text-muted);
  line-height: 1;
  padding-bottom: var(--space-2);
  user-select: none;
}

/* Average Calculator */
.average-tool__textarea {
  min-height: 8.5rem;
  resize: vertical;
  font-family: var(--font-mono);
}

.average-results-table {
  width: 100%;
  border-collapse: collapse;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.average-results-table th,
.average-results-table td {
  padding: var(--space-3) var(--space-4);
  text-align: left;
  border-bottom: 1px solid var(--color-border-subtle);
  vertical-align: top;
}

.average-results-table th {
  width: 36%;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  font-weight: 600;
  background: var(--color-surface-muted);
}

.average-results-table td {
  font-size: var(--text-base);
}

.average-results-table tr:last-child th,
.average-results-table tr:last-child td {
  border-bottom: 0;
}

/* Percentage Calculator (3-in-1 mini tools) */
.percentage-tool__mini + .percentage-tool__mini {
  margin-top: var(--space-6);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border-subtle);
}

.percentage-tool__mini-title {
  margin: 0 0 var(--space-3);
  font-size: var(--text-base);
  font-weight: 600;
  line-height: var(--leading-tight);
}

.percentage-tool__result-row {
  margin-top: var(--space-3);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.percentage-tool__result-value {
  flex: 1 1 auto;
  min-height: 2.875rem;
  display: flex;
  align-items: center;
  padding: 0 var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text);
  background: var(--color-surface-muted);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.percentage-tool__copy {
  flex: 0 0 auto;
  min-width: var(--tap-min);
  min-height: var(--tap-min);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
}

.percentage-tool__copy svg {
  width: 18px;
  height: 18px;
}

.percentage-tool__meta {
  margin: var(--space-2) 0 0;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.percentage-tool__meta--error {
  color: var(--color-danger);
}

.tool-page__aside {
  min-width: 0;
  width: 100%;
}

.tool-page__aside-inner {
  padding: var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

@media (min-width: 60rem) {
  .tool-page__aside-inner {
    position: sticky;
    top: var(--space-4);
  }
}

.tool-page__aside-title {
  margin: 0 0 var(--space-3);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.tool-page__aside-hub {
  margin: 0 0 var(--space-3);
  font-size: var(--text-sm);
}

.tool-page__aside-hub a {
  font-weight: 500;
}

.tool-page__aside-list {
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: var(--text-sm);
}

.tool-page__aside-list li + li {
  margin-top: var(--space-1);
}

.tool-page__aside-list a {
  display: block;
  padding: var(--space-2) var(--space-3);
  margin-inline: calc(-1 * var(--space-3));
  color: var(--color-primary);
  text-decoration: none;
  border-radius: var(--radius-sm);
}

.tool-page__aside-list a:hover {
  background: var(--color-primary-soft);
  color: var(--color-primary-hover);
}

.tool-page__aside-empty {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  padding: var(--space-2) 0;
}

.tool-page__prose {
  max-width: 42rem;
  padding-left: var(--space-5);
  margin-left: 0;
  border-left: 4px solid var(--color-primary-border);
  border-radius: var(--radius-sm) 0 0 var(--radius-sm);
}

.tool-page__prose .stack {
  gap: var(--space-5);
}

.tool-page__faq-q {
  margin-top: var(--space-4);
  margin-bottom: 0;
  font-size: var(--text-base);
  font-weight: 600;
  line-height: var(--leading-tight);
  color: var(--color-text);
}

.tool-page__faq-q:first-child {
  margin-top: 0;
}

.sci-calc__expr {
  margin-top: var(--space-2);
}

.sci-calc__result {
  margin-top: var(--space-3);
  min-height: var(--result-primary-height);
  height: var(--result-primary-height);
  padding: 0 var(--space-4);
  display: flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: var(--text-xl);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--color-text);
  background: var(--color-surface-muted);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sci-calc__result--error {
  color: var(--color-danger);
  background: #fef2f2;
  border-color: #fecaca;
}

.sci-calc__pad {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: var(--space-2);
  margin-top: var(--space-4);
}

.sci-calc__key {
  min-height: var(--tap-min);
  padding-left: var(--space-2);
  padding-right: var(--space-2);
  font-size: var(--text-sm);
}

.sci-calc__key--wide {
  grid-column: span 2;
}

/* -------------------------------------------------------------------------- */
/* Global site search — §7 (combobox / listbox; assets/js/site-search.js)    */
/* -------------------------------------------------------------------------- */

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.site-search {
  position: relative;
  flex: 0 1 auto;
  align-self: flex-start;
  width: 100%;
  max-width: 15rem;
}

@media (min-width: 48rem) {
  .site-search {
    max-width: 17.5rem;
  }
}

.site-search__row {
  display: flex;
  align-items: stretch;
  gap: var(--space-2);
}

.site-search__row .input {
  flex: 1 1 auto;
  min-width: 0;
  width: auto;
}

.site-search__submit {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.75rem;
  min-height: var(--tap-min);
  padding: 0 var(--space-3);
}

.site-search__submit svg {
  display: block;
}

.site-search__listbox {
  position: absolute;
  z-index: 60;
  left: 0;
  right: 0;
  top: calc(100% + var(--space-1));
  max-height: var(--search-listbox-max-height);
  margin: 0;
  padding: var(--space-1);
  list-style: none;
  overflow-y: auto;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.site-search__listbox[hidden] {
  display: none;
}

.site-search__status {
  margin-top: var(--space-1);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.site-search__option {
  display: flex;
  align-items: center;
  min-height: var(--tap-min);
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text);
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.site-search__option:hover {
  background: var(--color-surface-muted);
}

.site-search__option[aria-selected="true"] {
  background: var(--color-primary-soft);
  outline: 1px solid var(--color-primary-border);
}

.site-search__option mark {
  background: transparent;
  color: var(--color-primary);
  font-weight: 600;
}

.site-search__empty {
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* -------------------------------------------------------------------------- */
/* Cards & panels                                                             */
/* -------------------------------------------------------------------------- */

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.card--accent {
  border-color: var(--color-primary-border);
  box-shadow: var(--shadow-sm), 0 0 0 1px var(--color-primary-soft);
}

.card__body {
  padding: var(--space-6);
}

.card__title {
  margin: 0 0 var(--space-2);
  font-size: var(--text-lg);
  font-weight: 600;
  letter-spacing: -0.01em;
}

/* -------------------------------------------------------------------------- */
/* Forms                                                                      */
/* -------------------------------------------------------------------------- */

.form-stack {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.field__label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
}

.field__hint {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: var(--leading-tight);
}

.input,
.select,
.textarea {
  width: 100%;
  min-height: var(--tap-min);
  padding: var(--space-2) var(--space-3);
  font: inherit;
  color: var(--color-text);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color 0.12s ease, box-shadow 0.12s ease;
}

.input:hover,
.select:hover,
.textarea:hover {
  border-color: #d1d5db;
}

.input:focus-visible,
.select:focus-visible,
.textarea:focus-visible {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-soft);
}

.textarea {
  min-height: 6rem;
  resize: vertical;
}

/* -------------------------------------------------------------------------- */
/* Buttons                                                                    */
/* -------------------------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: var(--tap-min);
  padding: 0 var(--space-5);
  font: inherit;
  font-weight: 600;
  font-size: var(--text-sm);
  line-height: 1;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.12s ease, border-color 0.12s ease, color 0.12s ease,
    box-shadow 0.12s ease;
}

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.btn--primary {
  color: #fff;
  background: var(--color-primary);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.btn--primary:hover:not(:disabled) {
  background: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
}

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

.btn--secondary:hover:not(:disabled) {
  background: var(--color-surface-muted);
}

/* -------------------------------------------------------------------------- */
/* Typography utilities                                                         */
/* -------------------------------------------------------------------------- */

.h1 {
  margin: 0 0 var(--space-4);
  font-size: clamp(var(--text-2xl), 2.5vw, var(--text-3xl));
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: var(--leading-tight);
}

.h2 {
  margin: var(--space-8) 0 var(--space-3);
  font-size: var(--text-xl);
  font-weight: 600;
  letter-spacing: -0.015em;
}

/** Tighter top margin when the heading follows in-card form actions (e.g. calculator Result). */
.h2--snug-top {
  margin-top: var(--space-4);
}

.prose-muted {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
}

.mono {
  font-family: var(--font-mono);
}

/* -------------------------------------------------------------------------- */
/* Layout utilities                                                           */
/* -------------------------------------------------------------------------- */

.stack {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.stack--tight {
  gap: var(--space-4);
}

.cluster {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
}

.cluster--end {
  justify-content: flex-end;
}

.grid-tools {
  display: grid;
  gap: var(--space-6);
}

@media (min-width: 48rem) {
  .grid-tools {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* -------------------------------------------------------------------------- */
/* Result areas — fixed block heights to prevent CLS                          */
/* -------------------------------------------------------------------------- */

.result-panel {
  display: flex;
  flex-direction: column;
  gap: var(--result-stack-gap);
  height: var(--result-panel-height);
  min-height: var(--result-panel-height);
  min-width: 0;
  overflow: hidden;
}

.result-primary {
  display: flex;
  align-items: center;
  min-height: var(--result-primary-height);
  height: var(--result-primary-height);
  min-width: 0;
  max-width: 100%;
  padding: 0 var(--space-4);
  font-family: var(--font-mono);
  font-size: var(--text-2xl);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--color-text);
  background: var(--color-surface-muted);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  line-height: var(--leading-tight);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.result-secondary {
  display: flex;
  align-items: center;
  min-height: var(--result-secondary-height);
  height: var(--result-secondary-height);
  min-width: 0;
  max-width: 100%;
  padding: 0 var(--space-4);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  background: var(--color-surface);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-md);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.result-secondary--error {
  color: var(--color-danger);
  background: #fef2f2;
  border: 1px solid #fecaca;
  border-style: solid;
}

.result-error {
  display: flex;
  align-items: center;
  min-height: var(--result-error-height);
  height: var(--result-error-height);
  padding: 0 var(--space-4);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-danger);
  background: #fef2f2;
  border: 1px solid #fecaca;
  border-radius: var(--radius-md);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.result-placeholder {
  color: var(--color-text-faint);
  font-weight: 500;
}

.result-panel--compact {
  --result-panel-height: 6.5rem;
  --result-primary-height: 2.875rem;
  --result-secondary-height: 2.375rem;
}

.result-panel--tall {
  /* primary + gap + mixed + gap + error row = 3.75 + 0.75 + 3.25 + 0.75 + 3.25 = 11.75rem */
  --result-panel-height: 12rem;
  --result-primary-height: 3.75rem;
  --result-secondary-height: 3.25rem;
}

/** Grow with content (e.g. multi-line secondary). Keeps min-height for CLS. */
.result-panel--auto {
  height: auto;
  min-height: var(--result-panel-height);
  overflow: visible;
}

/** Long captions / hints: allow wrapping instead of single-line ellipsis. */
.result-secondary--wrap {
  align-items: flex-start;
  min-height: var(--result-secondary-height);
  height: auto;
  padding-top: 0.625rem;
  padding-bottom: 0.625rem;
  white-space: normal;
  overflow: visible;
  text-overflow: clip;
  line-height: var(--leading-normal);
}

/* -------------------------------------------------------------------------- */
/* Lists & disclaimers                                                        */
/* -------------------------------------------------------------------------- */

.list-steps {
  margin: 0;
  padding-left: 1.25rem;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
}

.list-steps li + li {
  margin-top: var(--space-2);
}

.disclaimer {
  margin-top: var(--space-8);
  padding: var(--space-4);
  font-size: var(--text-xs);
  line-height: var(--leading-relaxed);
  color: var(--color-text-muted);
  background: var(--color-surface-muted);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-md);
}