/* ============================================================
   SBA PRACTICE — STYLES
   Extends the existing Liberty London design system.
   Reuses qbank hero patterns; adds question/option/explanation UI.
   ============================================================ */

/* ─── Layout ───────────────────────────────────────────────── */
.sba-section {
  background: var(--bg);
  padding: 3rem var(--pad-x);
  min-height: 60vh;
}
.sba-inner {
  max-width: 980px;
  margin: 0 auto;
}

.sba-loading,
.sba-error {
  max-width: 520px;
  margin: 4rem auto;
  text-align: center;
  padding: 2rem;
}
.sba-error h3 { font-size: 1.4rem; color: var(--green); margin-bottom: .5rem; }
.sba-error p { color: var(--muted); margin-bottom: 1.25rem; }

/* ─── Mode select ──────────────────────────────────────────── */
.sba-mode-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin-bottom: 2.5rem;
}
.sba-mode-card {
  text-align: left;
  background: #fff;
  border: 1px solid var(--border);
  border-left: 3px solid var(--green);
  border-radius: 6px;
  padding: 1.5rem 1.4rem;
  cursor: pointer;
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
  display: flex; flex-direction: column;
}
.sba-mode-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 18px 40px -22px rgba(43, 82, 64, .35);
  border-left-color: var(--green2);
}
.sba-mode-card--quick { border-left-color: var(--tan); }
.sba-mode-card--quick:hover { border-left-color: #d8b97a; }
.sba-mode-card--timed { border-left-color: var(--ink2); }
.sba-mode-card--timed:hover { border-left-color: var(--ink2); }

.sba-mode-tag {
  display: inline-block;
  font-size: .58rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: .85rem;
}
.sba-mode-card h3 {
  font-family: var(--fd);
  font-size: 1.35rem;
  margin-bottom: .5rem;
  color: var(--ink);
}
.sba-mode-card p {
  font-size: .92rem;
  color: var(--ink2);
  line-height: 1.6;
  flex: 1;
  margin-bottom: 1rem;
}
.sba-mode-cta {
  font-size: .72rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--green);
}

/* ─── Stats / topics ──────────────────────────────────────── */
.sba-stats {
  display: flex;
  gap: 2.25rem;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 1.1rem 0;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}
.sba-stat-val {
  display: block;
  font-family: var(--fd);
  font-size: 1.45rem;
  color: var(--ink);
  line-height: 1;
  margin-bottom: .25rem;
}
.sba-stat-label {
  font-size: .58rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted);
}
.sba-topics-title {
  font-size: .68rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: .85rem;
}
.sba-topic-pills {
  display: flex; flex-wrap: wrap; gap: .5rem;
}
.sba-topic-pill {
  font-size: .78rem;
  background: #fff;
  border: 1px solid var(--border-g);
  color: var(--green);
  padding: .35rem .7rem;
  border-radius: 999px;
}

/* ─── Question card ───────────────────────────────────────── */
.sba-q-header {
  display: flex; align-items: center; gap: .6rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}
.sba-progress {
  font-size: .72rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted);
}
.sba-chip {
  font-size: .68rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  background: rgba(43, 82, 64, .08);
  color: var(--green);
  padding: .3rem .6rem;
  border-radius: 999px;
}
.sba-chip--ghost { background: transparent; border: 1px solid var(--border); color: var(--muted); }
.sba-timer {
  margin-left: auto;
  font-family: var(--fd);
  font-size: 1.05rem;
  background: var(--green);
  color: #fff;
  padding: .3rem .8rem;
  border-radius: 4px;
  letter-spacing: .04em;
}

.sba-q-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1.75rem 1.6rem;
}
.sba-stem {
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--ink);
  margin-bottom: 1.4rem;
}

.sba-options {
  display: grid;
  gap: .65rem;
  margin-bottom: 1.5rem;
}
.sba-option {
  display: flex; align-items: flex-start; gap: .9rem;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-left: 3px solid transparent;
  border-radius: 4px;
  padding: .85rem 1rem;
  text-align: left;
  cursor: pointer;
  transition: background .15s ease, border-color .15s ease, transform .15s ease;
  width: 100%;
}
.sba-option:hover:not(:disabled) {
  background: #fff;
  border-left-color: var(--green2);
}
.sba-option.is-selected {
  background: #fff;
  border-left-color: var(--green);
  box-shadow: 0 6px 18px -10px rgba(43,82,64,.35);
}
.sba-option.is-correct {
  background: rgba(43, 82, 64, .12);
  border-left-color: var(--green);
  color: var(--ink);
}
.sba-option.is-wrong {
  background: rgba(178, 60, 60, .1);
  border-left-color: #b23c3c;
}
.sba-option:disabled { cursor: default; }

.sba-option-letter {
  flex: 0 0 1.6rem;
  font-size: .85rem;
  font-weight: 600;
  color: var(--green);
  letter-spacing: .04em;
}
.sba-option-text { font-size: .95rem; line-height: 1.55; color: var(--ink); }

.sba-actions {
  display: flex; gap: .6rem; justify-content: flex-end;
  margin-bottom: .25rem;
}
.btn-secondary {
  background: transparent;
  color: var(--green);
  border: 1px solid var(--green);
  padding: .65rem 1.4rem;
  border-radius: 4px;
  font-size: .8rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  display: inline-flex; align-items: center;
}
.btn-secondary:hover { background: var(--green); color: #fff; }

.sba-meta-row { margin-top: 1rem; text-align: right; }
.sba-link-btn {
  background: transparent;
  border: 0;
  color: var(--muted);
  font-size: .78rem;
  letter-spacing: .1em;
  text-transform: uppercase;
}
.sba-link-btn:hover { color: var(--green); }

/* ─── Explanation ─────────────────────────────────────────── */
.sba-explain {
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}
.sba-verdict {
  display: inline-block;
  font-size: .72rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  padding: .4rem .8rem;
  border-radius: 4px;
  margin-bottom: 1rem;
}
.sba-verdict--right { background: rgba(43, 82, 64, .12); color: var(--green); }
.sba-verdict--wrong { background: rgba(178, 60, 60, .12); color: #8a2828; }

.sba-explain-block { margin-bottom: 1.25rem; }
.sba-explain-block:last-child { margin-bottom: 0; }
.sba-explain-h {
  font-size: .68rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: .5rem;
}
.sba-explain-block p { color: var(--ink2); line-height: 1.7; font-size: .95rem; }
.sba-why-list { display: grid; gap: .55rem; }
.sba-why-list li {
  font-size: .92rem;
  color: var(--ink2);
  line-height: 1.6;
  padding-left: .8rem;
  border-left: 2px solid var(--border-g);
}
.sba-tip {
  background: rgba(196, 169, 107, .12);
  border-left: 3px solid var(--tan);
  padding: 1rem 1.1rem;
  border-radius: 4px;
}
.sba-tip-label {
  font-size: .65rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: #8a6e2c;
  display: block;
  margin-bottom: .3rem;
}
.sba-tip p { color: var(--ink); }
.sba-guideline-link {
  display: inline-block;
  color: var(--green);
  border-bottom: 1px solid rgba(43, 82, 64, .35);
  padding-bottom: 1px;
  font-size: .9rem;
}
.sba-guideline-link:hover { color: var(--green2); border-bottom-color: var(--green2); }

/* ─── Results ─────────────────────────────────────────────── */
.sba-results-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 2rem 1.75rem;
  margin-bottom: 2rem;
  text-align: center;
}
.sba-results-card h2 { font-size: 2rem; color: var(--ink); margin: .5rem 0 1rem; }
.sba-score-bar {
  height: 6px;
  background: var(--bg3);
  border-radius: 999px;
  overflow: hidden;
  margin: 0 auto 1rem;
  max-width: 360px;
}
.sba-score-bar > span {
  display: block; height: 100%;
  background: linear-gradient(90deg, var(--green), var(--green2));
}
.sba-score-pct { font-size: .85rem; color: var(--muted); letter-spacing: .08em; margin-bottom: 1.25rem; }
.sba-results-actions {
  display: flex; gap: .75rem; justify-content: center; flex-wrap: wrap;
}
.sba-review-title { font-size: 1.5rem; margin-bottom: 1rem; color: var(--ink); }
.sba-review-list { display: grid; gap: .6rem; }
.sba-review-item {
  background: #fff;
  border: 1px solid var(--border);
  border-left: 3px solid var(--green);
  border-radius: 4px;
}
.sba-review-item.is-wrong { border-left-color: #b23c3c; }
.sba-review-item summary {
  list-style: none;
  cursor: pointer;
  display: flex; gap: .75rem; align-items: center;
  padding: .9rem 1rem;
}
.sba-review-item summary::-webkit-details-marker { display: none; }
.sba-review-num {
  font-size: .72rem;
  letter-spacing: .12em;
  color: var(--muted);
  min-width: 2.4rem;
}
.sba-review-stem { flex: 1; font-size: .92rem; color: var(--ink); line-height: 1.5; }
.sba-review-mark {
  font-size: .68rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--green);
}
.sba-review-item.is-wrong .sba-review-mark { color: #8a2828; }
.sba-review-item .sba-explain {
  margin: 0 1rem 1rem;
  padding: 1rem 0 0;
}

/* ─── CTA on guide pages ──────────────────────────────────── */
.sba-cta-section {
  background: #0d1a14;
  padding: 3rem var(--pad-x);
  position: relative;
  overflow: hidden;
}
.sba-cta-section::before {
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(ellipse at 20% 30%, rgba(43,82,64,.4) 0%, transparent 60%),
              radial-gradient(ellipse at 80% 80%, rgba(196,169,107,.12) 0%, transparent 55%);
  pointer-events: none;
}
.sba-cta-inner {
  position: relative; z-index: 2;
  max-width: var(--max-w); margin: 0 auto;
  display: grid; grid-template-columns: 1.4fr 1fr; gap: 2rem; align-items: center;
}
.sba-cta-tag {
  display: inline-block;
  font-size: .68rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: rgba(245,240,232,.82);
  margin-bottom: .75rem;
}
.sba-cta-title {
  font-family: var(--fd);
  font-size: clamp(1.7rem, 3.5vw, 2.4rem);
  color: #f5f0e8;
  line-height: 1.1;
  margin-bottom: .65rem;
}
.sba-cta-blurb {
  color: rgba(245,240,232,.82);
  line-height: 1.65;
  font-size: .98rem;
  margin-bottom: 1rem;
}
.sba-cta-meta {
  display: flex; gap: 1.5rem; flex-wrap: wrap;
  font-size: .72rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: rgba(245,240,232,.82);
}
.sba-cta-actions {
  display: flex; flex-direction: column; gap: .65rem;
}
.sba-cta-actions .btn { width: 100%; justify-content: center; text-align: center; }
.sba-cta-btn {
  display: inline-flex; justify-content: center; align-items: center;
  background: var(--tan);
  color: #1A1814;
  padding: .9rem 1.4rem;
  border-radius: 4px;
  font-size: .82rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  font-weight: 500;
  transition: background .2s ease;
}
.sba-cta-btn:hover { background: #d8b97a; }
.sba-cta-btn--ghost {
  background: transparent;
  color: #f5f0e8;
  border: 1px solid rgba(245,240,232,.3);
}
.sba-cta-btn--ghost:hover { background: rgba(245,240,232,.12); }

/* ─── Responsive ──────────────────────────────────────────── */
@media (max-width: 820px) {
  .sba-mode-grid { grid-template-columns: 1fr; }
  .sba-cta-inner { grid-template-columns: 1fr; }
  .sba-stats { gap: 1.5rem; }
  .sba-stats > div { min-width: 28%; }
}
@media (max-width: 540px) {
  .sba-section { padding: 2rem 1rem; }
  .sba-q-card { padding: 1.25rem 1.1rem; }
  .sba-stem { font-size: 1rem; }
  .sba-option { padding: .75rem .85rem; }
  .sba-option-text { font-size: .9rem; }
  .sba-results-card { padding: 1.5rem 1.1rem; }
  .sba-results-card h2 { font-size: 1.5rem; }
  .sba-review-item summary { flex-wrap: wrap; }
  .sba-timer { margin-left: 0; }
  .sba-q-header { gap: .4rem; }
}

/* ─── RESPONSIVE HARDENING ─────────────────────────────────── */

/* Large mobile: 481-767px */
@media (min-width: 481px) and (max-width: 767px) {
  .sba-section { padding: 2.5rem var(--pad-x); }
  .sba-mode-card { padding: 1.25rem 1.15rem; }
  .sba-mode-card h3 { font-size: 1.2rem; }
}

/* Small mobile: 320-480px */
@media (max-width: 480px) {
  .sba-section { padding: 1.5rem .75rem; }
  .sba-q-card { padding: 1rem .9rem; }
  .sba-stem { font-size: .92rem; line-height: 1.65; }
  .sba-option { padding: .65rem .75rem; }
  .sba-option-text { font-size: .85rem; }
  .sba-stats { gap: 1rem; flex-wrap: wrap; }
  .sba-stats > div { min-width: 40%; }
  .sba-mode-card { padding: 1.1rem 1rem; }
  .sba-mode-card h3 { font-size: 1.1rem; }
  .sba-mode-card p { font-size: .85rem; }
  body { padding-bottom: calc(64px + env(safe-area-inset-bottom, 0px)); }
}

/* Smallest mobile: ≤360px */
@media (max-width: 360px) {
  .sba-section { padding: 1.25rem .6rem; }
  .sba-q-card { padding: .85rem .75rem; }
  .sba-stem { font-size: .88rem; }
  .sba-option { padding: .6rem .65rem; }
  .sba-stats > div { min-width: 100%; }
}