/* TICHMOCK Study Books */

main.container.study-wide {
  width: min(1480px, calc(100% - 1.2rem));
}

.sb-shell {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr) 260px;
  gap: 1rem;
  align-items: start;
  margin: 1rem 0 2rem;
}

.sb-side,
.sb-tools,
.sb-main {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.sb-side {
  position: sticky;
  top: 0.75rem;
  max-height: calc(100vh - 6rem);
  overflow: auto;
  padding: 0.85rem;
}

.sb-side h2 {
  margin: 0 0 0.35rem;
  font-size: 1rem;
}

.sb-search {
  width: 100%;
  margin: 0.4rem 0 0.7rem;
  padding: 0.4rem 0.55rem;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.sb-nav details { margin: 0.2rem 0; }
.sb-nav summary {
  cursor: pointer;
  font-weight: 600;
  color: #334155;
  padding: 0.2rem 0;
}

.sb-nav a {
  display: block;
  padding: 0.28rem 0.4rem 0.28rem 0.7rem;
  border-radius: 6px;
  color: var(--ink);
  font-size: 0.92rem;
}

.sb-nav a.active {
  background: var(--soft);
  color: var(--brand-dark);
  font-weight: 600;
}

.sb-nav a .sb-dot {
  display: inline-block;
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  margin-right: 0.35rem;
  background: #cbd5e1;
}

.sb-nav a.done .sb-dot { background: var(--ok); }

.sb-main { padding: 1.25rem 1.5rem 2rem; }
.sb-main h1 { margin-top: 0; }
.sb-main h2 { margin-top: 1.6rem; color: #0f172a; }
.sb-main h3 { margin-top: 1.2rem; color: #1e3a5f; }

.sb-read {
  max-width: 46rem;
}

.sb-kicker-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 0.4rem 0 1rem;
}

.sb-chip {
  font-size: 0.78rem;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  background: var(--soft);
  color: #334155;
}

.sb-chip.high { background: #e8f8ef; color: #0f9d58; }
.sb-chip.formula { background: #fef3c7; }

.sb-callout {
  border-left: 4px solid var(--brand);
  background: #f8fafc;
  padding: 0.7rem 0.9rem;
  margin: 0.9rem 0;
  border-radius: 0 8px 8px 0;
}

.sb-callout.tip { border-color: var(--brand); }
.sb-callout.mistake { border-color: var(--bad); background: var(--bad-bg); }
.sb-callout.example { border-color: var(--teal); }
.sb-callout.remember { border-color: #7c3aed; }
.sb-callout.formula { border-color: #d97706; background: #fffbeb; }
.sb-callout.important { border-color: #0f9d58; background: var(--ok-bg); }

.sb-main table {
  width: 100%;
  border-collapse: collapse;
  margin: 0.7rem 0 1rem;
  font-size: 0.92rem;
}

.sb-main th,
.sb-main td {
  border: 1px solid var(--line);
  padding: 0.45rem 0.55rem;
  text-align: left;
  vertical-align: top;
}

.sb-main th { background: #f1f5f9; }

.sb-table-wrap { overflow-x: auto; }

.sb-figure {
  margin: 0.75rem 0 1.25rem;
  padding: 0.75rem;
  background: linear-gradient(180deg, #f8fafc 0%, #eef2ff 100%);
  border: 1px solid #dbe3f0;
  border-radius: 12px;
}

.sb-svg { width: 100%; height: auto; margin: 0; display: block; }

.sb-formula {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.15rem;
  background: #fffbeb;
  padding: 0.6rem 0.8rem;
  border-radius: 8px;
}

.sb-tools { padding: 0.9rem; position: sticky; top: 0.75rem; }
.sb-tools h3 { margin: 0 0 0.5rem; font-size: 0.95rem; }
.sb-tools .btn { width: 100%; margin: 0.25rem 0; }
.sb-progress-bar {
  height: 8px;
  background: #e2e8f0;
  border-radius: 99px;
  overflow: hidden;
  margin: 0.4rem 0 0.7rem;
}
.sb-progress-bar span {
  display: block;
  height: 100%;
  background: var(--brand);
}

.sb-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin: 1rem 0;
}

.sb-domain-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 0.75rem;
}

.sb-domain-card {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.8rem;
  background: #fff;
}

.sb-q {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.8rem;
  margin: 0.7rem 0;
}

.sb-q button.opt {
  display: block;
  width: 100%;
  text-align: left;
  margin: 0.3rem 0;
  padding: 0.45rem 0.6rem;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 8px;
  cursor: pointer;
}

.sb-q button.opt.picked { border-color: var(--brand); background: var(--soft); }
.sb-q button.opt.ok { border-color: var(--ok); background: var(--ok-bg); }
.sb-q button.opt.bad { border-color: var(--bad); background: var(--bad-bg); }

.sb-pager {
  display: flex;
  justify-content: space-between;
  gap: 0.6rem;
  margin-top: 1.5rem;
  flex-wrap: wrap;
}

.sb-course-study {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
  background: linear-gradient(135deg, #e8f1ff, #fff);
  border: 1px solid #c7d7fe;
  border-radius: var(--radius);
  padding: 1rem 1.15rem;
  margin-bottom: 1rem;
}

.sb-drawer-btn { display: none; }

.sb-search-hits { margin: 0; padding: 0; list-style: none; }
.sb-search-hits li { margin: 0.45rem 0; }

.sb-mode-study .sb-tools { display: none; }
.sb-mode-study .topbar,
.sb-mode-study .footer { opacity: 0.85; }

@media (max-width: 1100px) {
  .sb-shell { grid-template-columns: 1fr; }
  .sb-side, .sb-tools { position: static; max-height: none; }
  .sb-side.drawer { display: none; }
  .sb-side.drawer.open { display: block; }
  .sb-drawer-btn { display: inline-flex; }
}

@media print {
  .topbar, .footer, .sb-side, .sb-tools, .sb-drawer-btn, .sb-pager, .toolbar {
    display: none !important;
  }
  main.container, main.container.study-wide { width: 100%; }
  .sb-shell { display: block; box-shadow: none; }
  .sb-main { box-shadow: none; border: 0; }
  .sb-watermark {
    position: fixed;
    inset: 28% 0 auto 0;
    text-align: center;
    font-size: 7rem;
    font-weight: 800;
    color: rgba(15, 23, 42, 0.07);
    transform: rotate(-32deg);
    pointer-events: none;
    z-index: 0;
  }
  .sb-print-footer, .sb-own-line {
    position: running(sbfooter);
  }
  @page {
    size: A4;
    margin: 16mm 14mm 20mm 14mm;
    @bottom-center {
      content: "TICHMOCK | THIS DOCUMENT BELONGS TO TICHMOCK | Page " counter(page);
      font-size: 9pt;
      color: #475569;
    }
  }
  h2, h3 { break-after: avoid; }
  table, .sb-svg, .sb-q { break-inside: avoid; }
}

.sb-print-root { background: #fff; color: #111; }
.sb-print-root .sb-watermark {
  position: fixed;
  inset: 30% 0 auto 0;
  text-align: center;
  font-size: 8rem;
  font-weight: 800;
  color: rgba(15, 23, 42, 0.08);
  transform: rotate(-32deg);
  z-index: 0;
  pointer-events: none;
}
.sb-cover { text-align: center; padding: 4rem 1rem; page-break-after: always; }
.sb-brand { letter-spacing: 0.2em; font-weight: 800; color: #0b5fff; }
.sb-own { font-weight: 700; margin-top: 2rem; }
.sb-notice { max-width: 36rem; margin: 1.5rem auto; color: #475569; font-size: 0.92rem; }
.sb-toc { page-break-after: always; }
.sb-topic-print { page-break-before: always; }
.sb-print-footer {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  text-align: center;
  font-size: 0.8rem;
  color: #475569;
  padding: 0.4rem;
}