/* ===== SMP Creator — Specification Browser ===== */

html, body { height: 100%; }
body { margin: 0; }

/* ---------- Login gate ---------- */
#login-overlay {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  background: var(--bs-body-bg);
  z-index: 1080;
}
.login-card { width: 100%; max-width: 360px; }

/* ---------- Layout ---------- */
.layout {
  display: flex;
  height: calc(100vh - 56px);   /* viewport minus navbar */
}

#sidebar {
  width: 320px;
  flex: 0 0 320px;
  border-right: 1px solid var(--bs-border-color);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--bs-tertiary-bg);
}

.content {
  flex: 1 1 auto;
  overflow-y: auto;
  padding: 1.75rem 2rem;
}

/* ---------- Section nav ---------- */
.section-nav {
  display: flex;
  flex-direction: column;
  padding: 0.5rem;
  border-bottom: 1px solid var(--bs-border-color);
}
.section-nav a {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.5rem 0.7rem;
  border-radius: 0.4rem;
  color: var(--bs-body-color);
  text-decoration: none;
  font-size: 0.93rem;
}
.section-nav a:hover { background: var(--bs-secondary-bg); }
.section-nav a.active {
  background: var(--bs-primary);
  color: #fff;
  font-weight: 600;
}

/* ---------- Sidebar item list ---------- */
#sidebar-list-wrap {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  flex: 1 1 auto;
}
.sidebar-filter { padding: 0.6rem 0.6rem 0.4rem; }
.item-list {
  overflow-y: auto;
  padding: 0 0.4rem 0.8rem;
}
.item-group-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--bs-secondary-color);
  padding: 0.7rem 0.6rem 0.25rem;
  font-weight: 700;
}
.item-link {
  display: block;
  padding: 0.4rem 0.6rem;
  border-radius: 0.4rem;
  color: var(--bs-body-color);
  text-decoration: none;
  font-size: 0.86rem;
  line-height: 1.3;
}
.item-link:hover { background: var(--bs-secondary-bg); }
.item-link.active {
  background: var(--bs-primary-bg-subtle);
  outline: 1px solid var(--bs-primary-border-subtle);
}
.item-link .item-id {
  font-family: var(--bs-font-monospace);
  font-size: 0.74rem;
  color: var(--bs-secondary-color);
  display: block;
}
.item-link.active .item-id { color: var(--bs-primary); }

/* ---------- Detail content ---------- */
.content h1 { font-size: 1.5rem; }
.content h2 { font-size: 1.15rem; margin-top: 1.5rem; }
.detail-id {
  font-family: var(--bs-font-monospace);
  color: var(--bs-secondary-color);
  font-size: 0.9rem;
}
.detail-nav {
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

/* trace chips */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-family: var(--bs-font-monospace);
  font-size: 0.78rem;
  padding: 0.2rem 0.5rem;
  margin: 0.15rem 0.25rem 0.15rem 0;
  border-radius: 0.35rem;
  border: 1px solid var(--bs-border-color);
  background: var(--bs-body-bg);
  color: var(--bs-body-color);
  text-decoration: none;
}
.chip:hover { border-color: var(--bs-primary); color: var(--bs-primary); }

/* use-case flow steps (the "actions") */
.flow {
  list-style: none;
  counter-reset: step;
  padding: 0;
  margin: 0;
}
.flow li {
  counter-increment: step;
  display: flex;
  gap: 0.75rem;
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--bs-border-color);
}
.flow li::before {
  content: counter(step);
  flex: 0 0 1.7rem;
  height: 1.7rem;
  border-radius: 50%;
  background: var(--bs-primary);
  color: #fff;
  font-size: 0.8rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}
.flow .flow-actor {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 700;
  color: var(--bs-secondary-color);
}

.legacy-note {
  border-left: 3px solid var(--bs-warning);
  background: var(--bs-warning-bg-subtle);
  padding: 0.6rem 0.85rem;
  border-radius: 0.3rem;
  font-size: 0.88rem;
}

.stat-card { text-align: center; }
.stat-card .stat-num { font-size: 1.9rem; font-weight: 700; line-height: 1; }
.stat-card .stat-label { font-size: 0.8rem; color: var(--bs-secondary-color); }

.empty-hint { color: var(--bs-secondary-color); margin-top: 3rem; text-align: center; }

@media (max-width: 720px) {
  #sidebar { width: 220px; flex-basis: 220px; }
  .content { padding: 1.25rem; }
}