/* AP Biology math skills page. Uses the site tokens from styles.css. */
.ms-intro { display: grid; gap: 1.25rem; grid-template-columns: minmax(0, 2fr) minmax(0, 1fr); align-items: start; }
@media (max-width: 760px) { .ms-intro { grid-template-columns: 1fr; } }
.ms-routine, .ms-toc { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 1rem 1.25rem; }
.ms-routine h2, .ms-toc h2 { margin-top: 0; font-size: 1.15rem; }
.ms-toc ol { margin: 0; padding-left: 1.3rem; line-height: 1.7; }
.ms-skill { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.1rem 1.25rem 1.25rem; margin: 0 0 1.5rem; scroll-margin-top: 5rem; }
.ms-skill h2 { margin-top: 0; color: var(--brand-mid); }
.ms-where { color: var(--ink-soft); margin-top: 0; }
.ms-formula { background: var(--surface); border-left: 4px solid var(--brand-mid); border-radius: var(--radius-sm); padding: 0.7rem 0.9rem; margin: 0.75rem 0; line-height: 1.7; font-variant-numeric: tabular-nums; }
.ms-block { border: 1px solid var(--line); border-radius: var(--radius-sm); margin: 0.6rem 0; padding: 0.4rem 0.9rem; background: var(--card); }
.ms-block summary { cursor: pointer; font-weight: 700; padding: 0.2rem 0; }
.ms-block ol, .ms-block ul { margin: 0.4rem 0 0.6rem; line-height: 1.6; }
.ms-practice { margin-top: 1rem; border-top: 2px solid var(--line); padding-top: 0.9rem; }
.ms-practice h3 { margin: 0 0 0.4rem; }
.ms-q { font-size: 1.05rem; line-height: 1.6; }
.ms-fields { display: grid; grid-template-columns: repeat(auto-fill, minmax(12rem, 1fr)); gap: 0.75rem; margin: 0.6rem 0 0.9rem; }
.ms-field { display: flex; flex-direction: column; gap: 0.25rem; }
.ms-field label { font-weight: 600; font-size: 0.95rem; }
.ms-field input, .ms-field select { font: inherit; padding: 0.5rem 0.6rem; border: 1px solid var(--line-control); border-radius: var(--radius-sm); background: #fff; color: var(--ink); min-height: 2.6rem; max-width: 100%; }
.ms-field input:focus-visible, .ms-field select:focus-visible { outline: 3px solid var(--accent); outline-offset: 1px; }
.ms-field .ms-right { border-color: var(--grade-a-ink); background: var(--grade-a-bg); }
.ms-field .ms-wrong { border-color: var(--grade-f-ink); background: var(--grade-f-bg); }
.ms-actions { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.ms-feedback { min-height: 1.4em; font-weight: 600; margin: 0.6rem 0 0.2rem; }
.ms-solution { background: var(--surface); border-radius: var(--radius-sm); padding: 0.7rem 0.9rem 0.7rem 2rem; line-height: 1.6; }
.ms-tally { color: var(--ink-soft); font-size: 0.9rem; margin-bottom: 0; }

.ms-skill { overflow-wrap: anywhere; }
.ms-field { min-width: 0; }
.ms-field select { width: 100%; }
@media (max-width: 420px) { .ms-fields { grid-template-columns: minmax(0, 1fr); } }