/* View-specific layout. */

/* ---------- home ---------- */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(260px, 0.65fr);
  gap: 22px;
  align-items: stretch;
  margin: 18px 0 30px;
}
.hero-copy { display: flex; flex-direction: column; justify-content: center; gap: 14px; }
.hero-copy .kicker { align-self: flex-start; }
.hero-copy h1 { margin: 0; }
.hero-copy h1 .mark {
  background: var(--accent);
  border: var(--border);
  box-shadow: var(--shadow-sm);
  padding: 0 8px;
  display: inline-block;
  transform: rotate(-1.5deg);
}
.hero-side {
  background: var(--surface);
  border: var(--border);
  box-shadow: var(--shadow);
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.hero-side .big {
  font-family: var(--font-display);
  font-size: 2.4rem;
  line-height: 1;
}
.hero-side .line {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  border-top: 1px dashed rgba(18, 18, 18, 0.3);
  padding-top: 8px;
  font-size: 0.86rem;
}
.exam-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; }
  .exam-grid { grid-template-columns: 1fr; }
}
.home-section { margin-top: 34px; }
.feature-row { display: flex; flex-wrap: wrap; gap: 10px; }
.feature {
  border: var(--border-thin);
  background: var(--surface);
  padding: 6px 10px;
  font-size: 0.8rem;
  font-weight: 700;
}

/* ---------- exam dashboard ---------- */
.exam-hero {
  border: var(--border);
  box-shadow: var(--shadow);
  background: var(--surface);
  border-top: 12px solid var(--accent);
  padding: 22px;
  margin-bottom: 20px;
}
.exam-hero h1 { margin-bottom: 4px; }
.exam-hero .code { font-family: var(--font-mono); color: var(--muted); font-size: 0.85rem; }
.exam-hero .stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(110px, 1fr)); gap: 10px; margin-top: 18px; }
.dash-grid { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(260px, 0.5fr); gap: 18px; }
@media (max-width: 900px) { .dash-grid { grid-template-columns: 1fr; } }
.domain-list { display: flex; flex-direction: column; gap: 8px; }
.domain-row {
  display: flex;
  align-items: center;
  gap: 12px;
  border: var(--border-thin);
  background: var(--surface);
  padding: 10px 12px;
}
.domain-row .bar { flex: 1; height: 10px; border: var(--border-thin); background: var(--surface-2); }
.domain-row .bar > i { display: block; height: 100%; background: var(--accent); }
.domain-row .w { font-family: var(--font-mono); font-size: 0.78rem; width: 42px; text-align: right; }
.domain-row.empty { background: var(--surface-2); }
.domain-row.empty .nm { color: var(--muted); }
.domain-row.empty .bar > i { background: var(--muted); }
.domain-row .nm { flex: 1; font-size: 0.88rem; font-weight: 700; }

/* ---------- study ---------- */
.study-wrap { max-width: 860px; margin: 0 auto; }
.study-top { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 10px; }
.study-card { background: var(--surface); border: var(--border); box-shadow: var(--shadow); padding: 22px; }
.q-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-bottom: 12px; }
.q-stem { font-family: var(--font-body); font-size: clamp(1.25rem, 2.2vw, 1.55rem); font-weight: 800; line-height: 1.35; margin: 0 0 18px; }
.opt-mark { margin-left: auto; font-weight: 900; font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.03em; white-space: nowrap; }
.weak-row { width: 100%; background: transparent; border: 0; border-bottom: 1px dashed rgba(18,18,18,.25); font: inherit; text-align: left; cursor: pointer; padding: 6px 0; }
.weak-row:hover { background: var(--surface-2); }
.q-stem .multi-hint {
  display: inline-block;
  margin-left: 8px;
  font-size: 0.75rem;
  font-weight: 900;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--warn);
  background: #fff4dd;
  border: var(--border-thin);
  padding: 2px 7px;
  vertical-align: middle;
}
.study-actions { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 10px; margin-top: 18px; }
.picker-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
@media (max-width: 640px) { .picker-grid { grid-template-columns: 1fr; } }
.picker-summary {
  position: sticky;
  bottom: 0;
  z-index: 5;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-top: 16px;
  padding: 12px 0;
  border-top: var(--border);
  background: var(--surface);
}
.picker-grid { padding-bottom: 8px; }

/* ---------- mock ---------- */
.mock-wrap { max-width: 900px; margin: 0 auto; }
.mock-main { margin-top: 14px; }
.mock-question { background: var(--surface); border: var(--border); box-shadow: var(--shadow); padding: 20px; }
.mock-nav { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 10px; margin-top: 14px; }
.review-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 8px; }
.review-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  border: var(--border-thin);
  background: var(--surface);
  padding: 8px 10px;
  font-size: 0.84rem;
  cursor: pointer;
  text-align: left;
}
.review-item:hover { background: var(--surface-2); }
.review-item .idx { font-family: var(--font-mono); font-weight: 800; }
.review-item.answered { border-left: 6px solid var(--good); }
.review-item.flagged { border-left: 6px solid var(--orange); }

/* ---------- pbq lab ---------- */
.pbq-wrap { max-width: 940px; margin: 0 auto; }
.pbq-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 14px; }
.pbq-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  background: var(--surface);
  border: var(--border);
  box-shadow: var(--shadow-sm);
  padding: 16px;
  text-decoration: none;
  transition: transform 0.1s ease, box-shadow 0.1s ease;
}
.pbq-card:hover { transform: translate(-2px, -2px); box-shadow: var(--shadow); }
.pbq-card .t { font-weight: 900; font-size: 1.02rem; }
.pbq-card .b { font-size: 0.86rem; color: var(--muted); flex: 1; }
.pbq-card .meta { display: flex; gap: 6px; flex-wrap: wrap; }

/* ---------- misc ---------- */
.empty {
  border: var(--border);
  border-style: dashed;
  background: var(--surface-2);
  padding: 22px;
  text-align: center;
  color: var(--muted);
}
.callout {
  border: var(--border-thin);
  border-left: 8px solid var(--accent);
  background: var(--surface-2);
  padding: 10px 12px;
  font-size: 0.9rem;
}
.callout.warn { border-left-color: var(--orange); background: #fff4dd; }
.callout.bad { border-left-color: var(--bad); background: #ffe9e9; }
.callout.good { border-left-color: var(--good); background: #e6f7e6; }

.divider { border: 0; border-top: var(--border); margin: 18px 0; }

.kbd {
  display: inline-block;
  padding: 1px 6px;
  border: var(--border-thin);
  background: var(--surface-2);
  box-shadow: 1px 1px 0 var(--ink);
  font-family: var(--font-mono);
  font-size: 0.8em;
}

@media (max-width: 640px) {
  .study-actions {
    position: sticky;
    bottom: 0;
    z-index: 5;
    background: var(--surface);
    padding: 10px 0;
    border-top: var(--border);
  }
  .study-card { padding-bottom: 70px; }
}

/* ---------- guided lessons ---------- */
.lesson-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
}
.lesson-note { max-width: 640px; }
.lesson-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: var(--surface);
  border: var(--border);
  box-shadow: var(--shadow);
  padding: 18px;
  transition: transform 0.1s ease, box-shadow 0.1s ease;
}
a.lesson-card {
  max-width: 640px;
  text-decoration: none;
  color: var(--ink);
}
a.lesson-card:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-lg);
}
.lesson-card-top {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 6px;
}
.lesson-card h2 {
  margin: 0;
  font-size: 1.3rem;
}
.lesson-progress-line {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.lesson-wrap {
  max-width: 860px;
  margin: 0 auto;
}
.lesson-top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 10px;
}
.lesson-step-title {
  font-family: var(--font-body);
  font-size: clamp(1.35rem, 2.5vw, 1.8rem);
  line-height: 1.25;
  margin: 0 0 12px;
}
.lesson-body {
  color: var(--muted);
  font-size: 1rem;
  margin: 0 0 14px;
}
.lesson-prompt {
  font-weight: 800;
  margin: 14px 0;
}
.lesson-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-top: 16px;
  padding-top: 14px;
  border-top: var(--border);
}
.lesson-recap-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.lesson-recap-list li {
  border: var(--border-thin);
  border-left: 8px solid var(--accent);
  background: var(--surface-2);
  padding: 10px 12px;
}
.lesson-complete {
  background: var(--surface);
  border: var(--border);
  box-shadow: var(--shadow);
  padding: 24px;
}
.lesson-complete h1 {
  margin-bottom: 6px;
}
.subnet-visual {
  margin: 16px 0;
}
.subnet-bar {
  display: flex;
  height: 70px;
  border: var(--border);
  box-shadow: var(--shadow-sm);
  background: var(--surface);
}
.subnet-seg {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  border-right: var(--border-thin);
  font-family: var(--font-mono);
  font-size: 0.78rem;
}
.subnet-seg:last-child { border-right: 0; }
.subnet-seg.active { background: var(--accent); }
.subnet-scale {
  display: flex;
  justify-content: space-between;
  margin-top: 4px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--muted);
}
.subnet-legend {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px;
  margin-top: 10px;
  font-size: 0.82rem;
}
.subnet-caption {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
}
@media (max-width: 640px) {
  .subnet-bar { height: 54px; }
  .subnet-seg { font-size: 0.68rem; }
  .subnet-legend { grid-template-columns: 1fr; }
}

.lesson-field-results {
  list-style: none;
  padding: 0;
  margin: 8px 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.85rem;
  font-weight: 700;
}
.lesson-field-results li.good { color: var(--good); }
.lesson-field-results li.bad { color: var(--bad); }
.field-status {
  display: block;
  min-height: 1.1em;
  margin-top: 2px;
  font-size: 0.78rem;
  font-weight: 700;
}
.field-status.good { color: var(--good); }
.field-status.bad { color: var(--bad); }
.prefix-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--surface);
}
.prefix-table th,
.prefix-table td {
  border: var(--border-thin);
  padding: 6px 8px;
  text-align: left;
  font-size: 0.8rem;
}
.prefix-table th {
  background: var(--paper-2);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.lesson-step-title:focus,
#lesson-complete-title:focus {
  outline: none;
  text-decoration: underline;
  text-decoration-thickness: 3px;
  text-underline-offset: 6px;
}
.subnet-bar.dense .subnet-seg { font-size: 0.75rem; }
@media (max-width: 640px) {
  .subnet-seg { font-size: 0.75rem; }
  .subnet-scale { font-size: 0.75rem; }
  .order-item .controls button { width: 44px; height: 44px; }
}