/* Keep the established mobile bottom bar and desktop sidebar. */
.cp-answer-mode{display:flex;gap:8px;margin:0 0 20px;padding:4px;border-radius:14px;background:var(--bg-soft)}
.cp-answer-mode button{flex:1;min-height:48px;padding:10px 12px;border:0;border-radius:10px;background:transparent;color:var(--text-secondary);font-family:inherit;font-size:14px;font-weight:600;line-height:1.5;cursor:pointer}
.cp-answer-mode button[aria-pressed=true]{background:var(--bg-card);color:var(--primary);box-shadow:var(--shadow-sm)}
.cp-answer-mode button:focus-visible,.cp-review-item summary:focus-visible{outline:2px solid var(--primary);outline-offset:3px}
.cp-answer-review{text-align:left;margin:28px 0;border:1px solid var(--border);border-radius:20px;padding:20px;background:var(--bg-card);color:var(--text-primary)}
.cp-answer-review h2{font-size:20px;margin:0 0 8px;color:var(--text-strong)}
.cp-review-hint{font-size:14px;line-height:1.6;color:var(--text-secondary);margin:0 0 16px}
.cp-review-item{border-top:1px solid var(--border)}
.cp-review-item summary{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:52px;padding:14px 0;cursor:pointer;font-weight:600;list-style:none}
.cp-review-item summary::-webkit-details-marker{display:none}
.cp-review-item summary::after{content:'+';color:var(--text-secondary)}
.cp-review-item[open] summary::after{content:'−'}
.cp-review-item summary span:first-child{flex:1}
.cp-review-correct{color:var(--primary);font-weight:700}
.cp-review-wrong{color:var(--bg-wrong);font-weight:700}
.cp-review-body{font-size:16px;line-height:1.7;overflow-wrap:anywhere;padding-bottom:18px}
.cp-review-question,.cp-review-explanation{white-space:pre-wrap;margin:8px 0 16px}
.cp-review-choices{padding-left:28px;margin:12px 0}.cp-review-choices li{padding:5px 0}
.cp-review-answer{padding:12px;border-radius:10px;background:var(--bg-soft);font-weight:650}
@media(min-width:768px) and (max-width:1023px){
  #homeScreen.screen{max-width:920px;width:calc(100% - 32px)}
  #homeScreen .content-wrap{padding:20px 28px 110px!important;max-width:none}
  #homeScreen .cp-home-links{grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
  #homeScreen .cp-home-links button{flex-direction:column;align-items:flex-start;justify-content:center;min-height:120px;padding:16px;font-size:16px;gap:12px}
  #tabBar.tab-bar{width:calc(100% - 32px)!important;max-width:920px!important}
}
@media(min-width:1024px){
  #homeScreen .tab-panel.active[data-tab=home]{display:grid;grid-template-columns:minmax(260px,1fr) minmax(360px,1.4fr);gap:24px;align-items:stretch}
  #homeScreen .tab-panel[data-tab=home]>*{grid-column:1 / -1;min-width:0}
  #homeScreen .tab-panel[data-tab=home]>.home-top-row{grid-column:1;margin:0;display:flex}
  #homeScreen .home-cta-card.compact{width:100%;min-height:240px!important;height:100%;display:flex;flex-direction:column;justify-content:center}
  #homeScreen .tab-panel[data-tab=home]>.cp-home-links{grid-column:2;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin:0}
  #homeScreen .cp-home-links button{padding:20px;min-height:108px;font-size:17px}
  #homeScreen .tab-panel[data-tab=home]>.dual-card-row{margin:0;gap:24px}
  #homeScreen .tab-panel[data-tab=home]>.review-card,#homeScreen .tab-panel[data-tab=home]>.resume-card{grid-column:auto;margin:0}
  .cp-answer-review{padding:28px}.cp-answer-mode{max-width:640px}
}
@media(prefers-reduced-motion:no-preference){.cp-answer-mode button{transition:background .15s,color .15s}}
@media print{.cp-answer-mode{display:none}}

/* Append to responsive-exam.css. Scope: selection screens and install-banner header clearance. */
@media (min-width: 1024px) {
  #setSelectScreen > .content-wrap,
  #subjectSelectScreen > .content-wrap {
    width: 100%;
    min-width: 0;
  }
  #setList,
  #subjectList {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }
  #setList > *,
  #subjectList > * {
    min-width: 0;
    margin-top: 0;
  }
  body.pwa-banner-shown .app-header {
    padding-top: calc(80px + env(safe-area-inset-top)) !important;
  }
  body.sidebar-hidden .pwa-install-banner,
  body:has(.tab-bar.hidden) .pwa-install-banner {
    left: 0;
  }
}
@media (min-width: 1280px) {
  #setList,
  #subjectList {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* Concept views use .top-bar instead of .app-header on every viewport. */
body.pwa-banner-shown #conceptScreen > .concept-screen-wrap {
  padding-top: calc(80px + env(safe-area-inset-top));
}