/*
 * Site styles, layered on Bootstrap 5.3. Embeds use the frozen embed.css instead.
 *

 */

:root {
  --qc-paper: #f7f1e4;
  --qc-surface: #fffcf5;
  --qc-surface-sunken: #f1e9d8;
  --qc-ink: #2a2118;
  --qc-muted: #6b5d4d;
  --qc-rule: #e2d6bf;
  --qc-rule-strong: #cdbd9f;
  --qc-accent: #8f4316;
  --qc-accent-hover: #6e3110;
  --qc-accent-soft: #f3e1cf;
  /* Accent behind white text, eg buttons, which needs to stay dark */
  --qc-accent-fill: #8f4316;
  --qc-accent-fill-hover: #6e3110;
  --qc-on-fill: #fff;
  --qc-ins-bg: #d9eac3;
  --qc-ins-ink: #26421a;
  /* The + and - around changes: softer than their text, but AA (4.5:1) */
  --qc-ins-mark: #516a43;
  --qc-del-bg: #f5cdc7;
  --qc-del-ink: #6b1d16;
  --qc-del-mark: #8c4740;
  --qc-ok: #2e6a30;
  --qc-ok-soft: #e3efd6;
  --qc-ok-rule: #c4dbb0;
  --qc-ok-fill: #2e6a30;
  --qc-bad: #a3281e;
  --qc-bad-soft: #f8e0dc;
  --qc-bad-rule: #efc2bb;
  --qc-bad-fill: #a3281e;
  --qc-header-bg: rgba(247, 241, 228, 0.92);
  /* For the explanations that tapping a change shows (see application.js) */
  --qc-tip-bg: #2a2118;
  --qc-tip-ink: #fffcf5;
  --qc-serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, serif;
  --qc-mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;
  --qc-radius: 0.6rem;
  --qc-shadow: 0 1px 2px rgba(60, 40, 20, 0.06), 0 4px 16px rgba(60, 40, 20, 0.05);

  --bs-body-bg: var(--qc-paper);
  --bs-body-color: var(--qc-ink);
  --bs-secondary-color: var(--qc-muted);
  --bs-border-color: var(--qc-rule);
  --bs-link-color: var(--qc-accent);
  --bs-link-color-rgb: 143, 67, 22;
  --bs-link-hover-color: var(--qc-accent-hover);
  --bs-link-hover-color-rgb: 110, 49, 16;
  --bs-success: var(--qc-ok);
  --bs-success-rgb: 46, 106, 48;
  --bs-danger: var(--qc-bad);
  --bs-danger-rgb: 163, 40, 30;
  --bs-font-monospace: var(--qc-mono);
  --bs-code-color: var(--qc-accent);
  --bs-focus-ring-color: rgba(143, 67, 22, 0.25);
}

/* Dark mode follows the system's (see the script in the layout). Bootstrap
   switches its components with the same attribute. */
[data-bs-theme="dark"] {
  --qc-paper: #1b1611;
  --qc-surface: #241d17;
  --qc-surface-sunken: #15110d;
  --qc-ink: #ede4d4;
  --qc-muted: #a8998a;
  --qc-rule: #3b3229;
  --qc-rule-strong: #54483b;
  --qc-accent: #e39a62;
  --qc-accent-hover: #f0b98c;
  --qc-accent-soft: #4b2d18;
  --qc-accent-fill: #a5521f;
  --qc-accent-fill-hover: #8f4316;
  --qc-ins-bg: #283a20;
  --qc-ins-ink: #cfe8b9;
  --qc-ins-mark: #90a67f;
  --qc-del-bg: #4a221d;
  --qc-del-ink: #f4c9c2;
  --qc-del-mark: #b78d87;
  --qc-ok: #86c776;
  --qc-ok-soft: #1d2918;
  --qc-ok-rule: #33472a;
  --qc-ok-fill: #3f7a35;
  --qc-bad: #ec8476;
  --qc-bad-soft: #321d19;
  --qc-bad-rule: #5b2e27;
  --qc-bad-fill: #b23a2c;
  --qc-header-bg: rgba(27, 22, 17, 0.92);
  --qc-tip-bg: #3b3229;
  --qc-tip-ink: #f5ecdd;
  --qc-shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 4px 16px rgba(0, 0, 0, 0.25);

  --bs-body-bg: var(--qc-paper);
  --bs-body-color: var(--qc-ink);
  --bs-secondary-color: var(--qc-muted);
  --bs-border-color: var(--qc-rule);
  --bs-link-color: var(--qc-accent);
  --bs-link-color-rgb: 227, 154, 98;
  --bs-link-hover-color: var(--qc-accent-hover);
  --bs-link-hover-color-rgb: 240, 185, 140;
  --bs-success: var(--qc-ok);
  --bs-success-rgb: 134, 199, 118;
  --bs-danger: var(--qc-bad);
  --bs-danger-rgb: 236, 132, 118;
  --bs-code-color: var(--qc-accent);
  --bs-focus-ring-color: rgba(227, 154, 98, 0.3);
}

body {
  background-color: var(--qc-paper);
  -webkit-font-smoothing: antialiased;
}

a {
  text-underline-offset: 0.15em;
  text-decoration-thickness: 1px;
}

h1, h2, h3, .serif-font {
  font-family: var(--qc-serif);
}

h1, h2, h3 {
  font-weight: 600;
  letter-spacing: -0.01em;
}

h1 {
  font-size: clamp(2rem, 1.6rem + 1.6vw, 2.75rem);
  line-height: 1.15;
}

h2 {
  font-size: 1.6rem;
}

h3 {
  font-size: 1.3rem;
}

::selection {
  background: var(--qc-accent-soft);
}

/* ------- Header and footer ------- */

.site-header {
  border-bottom: 1px solid var(--qc-rule);
  background: var(--qc-header-bg);
  backdrop-filter: blur(6px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.site-header .container {
  display: flex;
  align-items: center;
  gap: 1rem;
  min-height: 3.75rem;
}

.site-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--qc-ink);
  text-decoration: none;
  font-family: var(--qc-serif);
  font-size: 1.3rem;
  font-weight: 600;
  margin-right: auto;
}

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

.site-brand img {
  width: 2rem;
  height: 2rem;
  border-radius: 0.45rem;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.site-brand, .site-nav a {
  white-space: nowrap;
}

.site-nav a:not(.btn) {
  color: var(--qc-muted);
  text-decoration: none;
}

.site-nav a:not(.btn):hover {
  color: var(--qc-ink);
}

@media (max-width: 767.98px) {
  .site-nav .nav-optional {
    display: none;
  }
}

.site-footer {
  border-top: 1px solid var(--qc-rule);
  color: var(--qc-muted);
  font-size: 0.9rem;
  margin-top: 4rem;
  padding: 1.5rem 0 2.5rem;
}

.site-footer a {
  color: inherit;
}

.site-footer a:hover {
  color: var(--qc-ink);
}

.site-main {
  padding-top: 2rem;
}

/* ------- Buttons and forms ------- */

.btn {
  --bs-btn-border-radius: 0.5rem;
  font-weight: 500;
}

.btn-primary, .btn-success {
  --bs-btn-color: var(--qc-on-fill);
  --bs-btn-bg: var(--qc-accent-fill);
  --bs-btn-border-color: var(--qc-accent-fill);
  --bs-btn-hover-color: var(--qc-on-fill);
  --bs-btn-hover-bg: var(--qc-accent-fill-hover);
  --bs-btn-hover-border-color: var(--qc-accent-fill-hover);
  --bs-btn-active-color: var(--qc-on-fill);
  --bs-btn-active-bg: var(--qc-accent-fill-hover);
  --bs-btn-active-border-color: var(--qc-accent-fill-hover);
  --bs-btn-disabled-color: var(--qc-on-fill);
  --bs-btn-disabled-bg: var(--qc-accent-fill);
  --bs-btn-disabled-border-color: var(--qc-accent-fill);
}

.btn-outline-secondary {
  --bs-btn-color: var(--qc-ink);
  --bs-btn-border-color: var(--qc-rule-strong);
  --bs-btn-hover-bg: var(--qc-surface-sunken);
  --bs-btn-hover-color: var(--qc-ink);
  --bs-btn-hover-border-color: var(--qc-rule-strong);
  --bs-btn-active-bg: var(--qc-surface-sunken);
  --bs-btn-active-color: var(--qc-ink);
  --bs-btn-active-border-color: var(--qc-rule-strong);
}

.form-control, .form-select {
  border-color: var(--qc-rule-strong);
  background-color: var(--qc-surface);
}

.input-group-text {
  border-color: var(--qc-rule-strong);
  background-color: var(--qc-surface-sunken);
  color: var(--qc-muted);
}

.form-control:focus, .form-select:focus {
  border-color: var(--qc-accent);
  box-shadow: 0 0 0 0.2rem var(--bs-focus-ring-color);
  background-color: var(--qc-surface);
}

.form-label {
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.form-text {
  color: var(--qc-muted);
}

textarea.serif-font {
  font-size: 1.05rem;
  line-height: 1.6;
}

/* ------- Panels ------- */

.panel {
  background: var(--qc-surface);
  border: 1px solid var(--qc-rule);
  border-radius: var(--qc-radius);
  box-shadow: var(--qc-shadow);
  padding: 1.5rem;
}

@media (max-width: 575.98px) {
  .panel {
    padding: 1.1rem;
  }
}

.eyebrow {
  color: var(--qc-muted);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.meta {
  color: var(--qc-muted);
  font-size: 0.95rem;
}

.meta a {
  color: inherit;
}

.meta a:hover {
  color: var(--qc-ink);
}

/* ------- Breadcrumbs ------- */

.breadcrumb {
  --bs-breadcrumb-divider: '›';
  --bs-breadcrumb-divider-color: var(--qc-rule-strong);
  --bs-breadcrumb-item-active-color: var(--qc-muted);
  font-size: 0.9rem;
  margin-bottom: 1.25rem;
}

.breadcrumb a {
  color: var(--qc-muted);
}

/* ------- Quotes ------- */

figure {
  color: var(--qc-ink);
  padding-left: 1.3rem;
  margin-left: 2px;
  position: relative;
}

/* Rounded left border, positioned like Stack Overflow's blockquotes. */
figure:before {
  background: var(--qc-accent);
  border-radius: 8px;
  top: 0;
  left: 0;
  bottom: 0;
  content: "";
  position: absolute;
  width: 3px;
  opacity: 0.55;
}

figure.misquote:before {
  background: var(--qc-bad);
  opacity: 1;
}

figure.proper-quote:before {
  background: var(--qc-ok);
  opacity: 1;
}

blockquote {
  font-family: var(--qc-serif);
  margin-bottom: 0;
}

.blockquote-footer {
  color: var(--qc-muted);
  font-size: 0.9rem;
}

.pre-wrap {
  white-space: pre-wrap;
}

.lh-md {
  line-height: 2.2rem;
}

.quote-text {
  font-size: 1.2rem;
  line-height: 1.65;
}

/* ------- Verdicts ------- */

.verdict {
  display: flex;
  gap: 0.85rem;
  align-items: flex-start;
  border-radius: var(--qc-radius);
  padding: 1rem 1.15rem;
  border: 1px solid;
}

.verdict-icon {
  flex: none;
  display: grid;
  place-items: center;
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 50%;
  color: var(--qc-on-fill);
  font-weight: 700;
  line-height: 1;
}

.verdict-title {
  font-family: var(--qc-serif);
  font-size: 1.2rem;
  font-weight: 600;
  margin: 0;
}

.verdict-detail {
  color: var(--qc-muted);
  font-size: 0.9rem;
  margin: 0.15rem 0 0;
}

/* Same test as the tap-to-explain script in application.js */
.if-no-hover {
  display: none;
}

@media (hover: none) {
  .if-hover {
    display: none;
  }

  .if-no-hover {
    display: inline;
  }
}

.verdict-ok {
  background: var(--qc-ok-soft);
  border-color: var(--qc-ok-rule);
}

.verdict-ok .verdict-icon {
  background: var(--qc-ok-fill);
}

.verdict-bad {
  background: var(--qc-bad-soft);
  border-color: var(--qc-bad-rule);
}

.verdict-bad .verdict-icon {
  background: var(--qc-bad-fill);
}

/* ------- Diffs ------- */

.diff-output {
  font-family: var(--qc-mono);
  font-size: 0.95rem;
  background: var(--qc-surface);
  border: 1px solid var(--qc-rule);
  border-radius: var(--qc-radius);
  padding: 1rem 1.15rem;
  margin: 0;
}

ins, del {
  font-family: inherit;
  border-radius: 0.25rem;
  padding: 0.15rem 0.2rem;
  text-decoration: none;
}

ins {
  background-color: var(--qc-ins-bg);
  color: var(--qc-ins-ink);
}

del {
  background-color: var(--qc-del-bg);
  color: var(--qc-del-ink);
}

ins:before, ins:after {
  content: '+';
  color: var(--qc-ins-mark);
}

del:before, del:after {
  content: '-';
  color: var(--qc-del-mark);
}

ins:has(+ ins):after, /* ins followed by another ins */
ins + ins:before, /* ins preceded by another ins */
del:has(+ del):after,
del + del:before {
  content: '';
}

ins:has(+ ins), del:has(+ del) {
  border-top-right-radius: 0;
  border-bottom-right-radius: 0;
  padding-right: 0;
}

ins + ins, del + del {
  border-top-left-radius: 0;
  border-bottom-left-radius: 0;
  padding-left: 0;
}

.red-underline {
  text-decoration: underline;
  text-decoration-style: wavy;
  text-decoration-color: var(--qc-bad);
  text-underline-offset: 0.5rem;
  text-decoration-skip-ink: none;
}

ins.red-underline, del.red-underline {
  cursor: help;
}

.diff-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
  color: var(--qc-muted);
  font-size: 0.85rem;
}

.diff-legend ins, .diff-legend del {
  font-family: var(--qc-mono);
}

/* ------- Explanation table ------- */

.explanation-table {
  --bs-table-bg: transparent;
  --bs-table-color: var(--qc-ink);
  --bs-table-border-color: var(--qc-rule);
  margin-bottom: 0;
}

.explanation-table th {
  color: var(--qc-muted);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.explanation-table pre {
  font-family: var(--qc-mono);
  font-size: 0.9rem;
}

.explanation-table tr.table-danger {
  --bs-table-bg: var(--qc-bad-soft);
  --bs-table-color: var(--qc-ink);
  --bs-table-border-color: var(--qc-bad-rule);
}

/* ------- Previews and steps ------- */

.preview {
  background: var(--qc-surface-sunken);
  border-radius: var(--qc-radius);
  font-size: 1.1rem;
  line-height: 1.65;
  min-height: 6.5rem;
  padding: 0.85rem 1rem;
}

.preview:empty:before {
  color: var(--qc-muted);
  font-family: var(--bs-body-font-family);
  font-size: 0.95rem;
  font-style: italic;
  content: 'A formatted preview will appear here.';
}

.step-number {
  display: inline-grid;
  place-items: center;
  width: 1.9rem;
  height: 1.9rem;
  border-radius: 50%;
  background: var(--qc-accent-fill);
  color: var(--qc-on-fill);
  font-family: var(--bs-body-font-family);
  font-size: 0.95rem;
  font-weight: 700;
  margin-right: 0.6rem;
  vertical-align: 0.15em;
}

details.advanced > summary {
  color: var(--qc-muted);
  cursor: pointer;
  font-weight: 600;
}

details.advanced[open] > summary {
  margin-bottom: 1rem;
}

/* ------- Index ------- */

.hero {
  padding: 1rem 0 2.5rem;
}

.hero-lede {
  color: var(--qc-muted);
  font-size: 1.2rem;
  line-height: 1.55;
  max-width: 34rem;
}

.hero-example {
  font-family: var(--qc-mono);
  font-size: 1rem;
}

.entry {
  padding: 1.35rem 0;
  border-bottom: 1px solid var(--qc-rule);
}

.entry-title {
  font-family: var(--qc-serif);
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 0.6rem;
}

.entry-title a {
  color: var(--qc-ink);
  text-decoration: none;
}

.entry-title a:hover {
  color: var(--qc-accent);
  text-decoration: underline;
}

.entry blockquote {
  font-size: 1.05rem;
  line-height: 1.6;
}

.pagination {
  --bs-pagination-bg: var(--qc-surface);
  --bs-pagination-border-color: var(--qc-rule);
  --bs-pagination-color: var(--qc-accent);
  --bs-pagination-hover-bg: var(--qc-surface-sunken);
  --bs-pagination-hover-color: var(--qc-accent-hover);
  --bs-pagination-hover-border-color: var(--qc-rule);
  --bs-pagination-active-bg: var(--qc-accent-fill);
  --bs-pagination-active-border-color: var(--qc-accent-fill);
  --bs-pagination-focus-box-shadow: 0 0 0 0.2rem var(--bs-focus-ring-color);
  margin-top: 2rem;
}

/* ------- Prose pages ------- */

.prose {
  max-width: 44rem;
  font-size: 1.075rem;
  line-height: 1.7;
}

.prose h1 {
  margin-bottom: 1.5rem;
}

.prose h2 {
  margin-top: 2.5rem;
  margin-bottom: 1rem;
}

.prose h5 {
  font-family: var(--qc-serif);
  font-size: 1.25rem;
  font-weight: 600;
  margin-top: 2.25rem;
  margin-bottom: 0.85rem;
}

.prose figure {
  margin: 1.5rem 0;
}

.prose blockquote {
  font-size: 1.05rem;
  line-height: 1.7;
}

/* ------- Misc ------- */

.embed-code {
  font-family: var(--qc-mono);
  font-size: 0.85rem;
  background: var(--qc-surface-sunken);
  border: 1px solid var(--qc-rule);
  border-radius: 0.5rem;
  padding: 0.6rem 0.8rem;
  word-break: break-all;
  white-space: pre-wrap;
  margin-bottom: 0;
}

.disclaimer > summary {
  color: var(--qc-muted);
  cursor: pointer;
  font-weight: 600;
}

.disclaimer[open] > summary {
  margin-bottom: 0.75rem;
}

.disclaimer li {
  margin-bottom: 0.6rem;
}

.search-field {
  width: 16rem;
}