/* ApexGraf base — fonts, body, links, Bootstrap soft overrides. */
@import url("https://fonts.googleapis.com/css2?family=Hanken+Grotesk:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;600;700&family=Roboto+Slab:wght@700&display=swap");

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

html {
  height: 100%;
  font-size: calc(100% * var(--am-type-scale, 1.15));
}

body {
  margin: 0;
  min-height: 100%;
  background: var(--am-page);
  color: var(--am-ink);
  font-family: var(--am-font-body);
  font-size: 0.9375rem; /* 15px at 100% root → ~17.25px at 115% */
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

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

a:hover {
  color: var(--am-navy);
}

::selection {
  background: var(--am-ink);
  color: var(--am-canvas);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--am-font-ui);
  font-weight: 700;
  color: var(--am-ink);
}

.am-page-title {
  font-family: var(--am-font-page-title);
  font-weight: 700;
  font-size: 1.75rem;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--am-navy);
}

.am-page-title--sm {
  font-size: 1.35rem;
  line-height: 1.25;
}

main.am-main {
  width: var(--am-page-width);
  max-width: none;
  margin: 0 auto;
  padding: 28px 0 64px;
}

@media (max-width: 1280px) {
  main.am-main {
    padding: 10px 0 48px;
  }
}

.am-flash {
  margin-bottom: 16px;
  padding: 12px 16px;
  border-radius: var(--am-radius-md);
  border: 1.5px solid var(--am-border);
  background: var(--am-surface);
  font-size: 0.875rem;
}

.am-flash-success { border-color: color-mix(in srgb, var(--am-primary) 35%, var(--am-border)); background: var(--am-soft-teal); }
.am-flash-warning { border-color: color-mix(in srgb, var(--am-accent) 35%, var(--am-border)); background: var(--am-soft-accent); }
.am-flash-danger { border-color: color-mix(in srgb, var(--am-accent) 50%, var(--am-border)); background: var(--am-soft-accent); }
.am-flash-info { border-color: var(--am-border); background: var(--am-wash); }

/* Bootstrap buttons → ApexGraf */
.btn-primary {
  --bs-btn-bg: var(--am-accent);
  --bs-btn-border-color: var(--am-accent);
  --bs-btn-hover-bg: color-mix(in srgb, var(--am-accent) 88%, #000);
  --bs-btn-hover-border-color: color-mix(in srgb, var(--am-accent) 88%, #000);
  --bs-btn-active-bg: color-mix(in srgb, var(--am-accent) 80%, #000);
  --bs-btn-active-border-color: color-mix(in srgb, var(--am-accent) 80%, #000);
  --bs-btn-color: var(--am-white);
  --bs-btn-hover-color: var(--am-white);
  background-image: var(--am-accent-btn);
  border-radius: 999px;
  font-family: var(--am-font-ui);
  font-weight: 700;
  letter-spacing: 0.01em;
}
.btn-primary:hover,
.btn-primary:focus-visible {
  background-image: var(--am-accent-btn);
  filter: brightness(1.03);
}

.btn-outline-primary,
.btn-outline-secondary,
.btn-outline-success,
.btn-outline-danger,
.btn-secondary {
  border-radius: var(--am-radius-pill);
  font-family: var(--am-font-ui);
  font-weight: 600;
}

.btn-outline-primary {
  --bs-btn-color: var(--am-primary);
  --bs-btn-border-color: var(--am-border);
  --bs-btn-hover-bg: var(--am-soft-teal);
  --bs-btn-hover-border-color: var(--am-primary);
  --bs-btn-hover-color: var(--am-navy);
}

.form-control,
.form-select {
  border-radius: var(--am-radius-md);
  border-color: var(--am-border);
  background: var(--am-white);
}

.form-control:focus,
.form-select:focus {
  border-color: var(--am-primary);
  box-shadow: 0 0 0 0.2rem color-mix(in srgb, var(--am-primary) 18%, transparent);
}

.table {
  --bs-table-bg: transparent;
  --bs-table-color: var(--am-ink);
  --bs-table-border-color: var(--am-border);
  --bs-table-hover-bg: color-mix(in srgb, var(--am-ink) 4%, transparent);
}

.badge {
  border-radius: var(--am-radius-sm);
  font-family: var(--am-font-mono);
  font-weight: 600;
}

.card {
  background: var(--am-surface);
  border: 1.5px solid var(--am-border);
  border-radius: var(--am-radius-xl);
}

.alert {
  border-radius: var(--am-radius-md);
}

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

/* After MD table expand, newlines are <br> — don't pre-wrap again. */
.solution-text[data-am-md-tables="1"] {
  white-space: normal;
}

.am-md-table {
  width: 100%;
  max-width: 40rem;
  margin: 0.65rem 0 0.85rem;
  border-collapse: collapse;
  font: inherit;
  line-height: 1.35;
  background: #eef1f5;
  border: 1px solid #d5dbe3;
  border-radius: 8px;
  overflow: hidden;
}

.am-md-table th,
.am-md-table td {
  padding: 0.45rem 0.7rem;
  border: 1px solid #d5dbe3;
  vertical-align: top;
  background: #eef1f5;
}

.am-md-table th {
  font-weight: 700;
  background: #e2e7ee;
  text-align: left;
}

.am-md-table tbody tr:nth-child(even) td {
  background: #e8ecf2;
}

/* KaTeX display math (\\[…\\] / $$…$$) defaults to center — keep flush with prose. */
.katex-display {
  text-align: left;
  padding-left: 2em; /* ~1 tab indent */
  margin-left: 0;
  margin-right: 0;
}

.katex-display > .katex {
  text-align: left;
}

/* \dfrac (full-size) then 15% under the prior 20% bump (1.2 × 0.85). */
.katex {
  /* em here is vs .katex — var() keeps every superscript the same px. */
  --am-sup: 0.82em;
}
.katex .mfrac {
  font-size: 1.02em;
}
.katex .mfrac .sizing.reset-size6.size3,
.katex .mfrac .sizing.reset-size5.size3 {
  font-size: 0.714em !important;
}
/* 4^2 inside \dfrac was 0.7em of the big numerator, not of .katex. */
.katex .msupsub .sizing,
.katex .msupsub .mtight,
.katex .msupsub .mord,
.katex .mfrac .msupsub .sizing,
.katex .mfrac .msupsub .sizing.reset-size6.size3,
.katex .mfrac .msupsub .sizing.reset-size5.size3,
.katex .mfrac .msupsub .mtight,
.katex .mfrac .msupsub .mord {
  font-size: var(--am-sup) !important;
  font-weight: 700 !important;
}

/* KaTeX ∠ is a short operator in the problem face; match DEF cap height. */
.katex .am-angle {
  display: inline-block;
  font-size: 1.38em;
  line-height: 1;
  vertical-align: -0.2em;
}

body.am-login-body {
  background: var(--am-canvas);
}

main.am-login-main {
  width: 100%;
  max-width: none;
  margin: 0;
  padding: 0;
}

/* —— AMC affiliation disclaimer footer (partials/disclaimer_footer.html) —— */
.am-disclaimer-footer {
  background: #12283A;
  margin-top: 3rem;
  padding: 2.25rem 1.5rem;
}

.am-disclaimer-footer__text {
  margin: 0 auto;
  max-width: 62rem;
  text-align: center;
  font-size: 0.85rem;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.72);
}