/**
 * Preparation hub — overflow-safe cards, discovery sidebar, list/grid views
 */

.prep-page {
  overflow-x: clip;
}

.prep-layout {
  display: grid;
  gap: 1.5rem;
  align-items: start;
}

@media (max-width: 1023px) {
  .prep-layout--sidebar-reverse .prep-main {
    order: 1;
  }

  .prep-layout--sidebar-reverse .prep-sidebar {
    order: 2;
  }
}

@media (min-width: 1024px) {
  .prep-layout--sidebar {
    grid-template-columns: minmax(0, 1fr) 17.5rem;
  }
  .prep-layout--sidebar-reverse {
    grid-template-columns: 17.5rem minmax(0, 1fr);
  }
}

.prep-main {
  min-width: 0;
  max-width: 100%;
}

.prep-sidebar {
  min-width: 0;
}

.prep-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 17.5rem), 1fr));
  width: 100%;
}

.prep-grid--2 {
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 20rem), 1fr));
}

.prep-card {
  min-width: 0;
  max-width: 100%;
  overflow: hidden;
  border-radius: 1rem;
  border: 1px solid rgb(226 232 240);
  background: #fff;
  padding: 1rem 1.1rem;
  transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
  word-wrap: break-word;
  overflow-wrap: anywhere;
}

.prep-card:hover {
  transform: translateY(-2px);
  border-color: rgb(153 246 228);
  box-shadow: 0 10px 28px rgb(15 23 42 / 0.07);
}

.prep-card__title {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  line-height: 1.35;
  word-break: break-word;
}

.prep-card__summary {
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
  color: rgb(100 116 139);
  font-size: 0.8125rem;
}

.prep-badge {
  display: inline-flex;
  align-items: center;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.15rem 0.5rem;
  border-radius: 9999px;
  background: rgb(240 253 250);
  color: rgb(13 148 136);
}

.prep-tag {
  display: inline-flex;
  align-items: center;
  border-radius: 9999px;
  border: 1px solid rgb(226 232 240);
  background: rgb(248 250 252);
  padding: 0.2rem 0.55rem;
  font-size: 0.7rem;
  font-weight: 600;
  color: rgb(71 85 105);
}

.prep-btn {
  display: inline-flex;
  width: 100%;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  border-radius: 9999px;
  border: 1px solid rgb(153 246 228);
  background: rgb(240 253 250);
  padding: 0.6rem 1rem;
  font-size: 0.8125rem;
  font-weight: 700;
  color: rgb(15 118 110);
  text-decoration: none;
  transition: background 0.15s;
}

.prep-btn:hover {
  background: rgb(204 251 241);
}

/* Compact list view */
.prep-list {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  min-width: 0;
}

.prep-list__row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 0.75rem 1rem;
  align-items: center;
  min-width: 0;
  border-radius: 0.9rem;
  border: 1px solid rgb(226 232 240);
  background: #fff;
  padding: 0.85rem 1rem;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.prep-list__row:hover {
  border-color: rgb(153 246 228);
  box-shadow: 0 4px 16px rgb(15 23 42 / 0.05);
}

@media (max-width: 639px) {
  .prep-list__row {
    grid-template-columns: auto minmax(0, 1fr);
  }
  .prep-list__row .prep-btn {
    grid-column: 1 / -1;
    width: 100%;
  }
}

.prep-list__icon {
  font-size: 1.5rem;
  line-height: 1;
}

.prep-list__body {
  min-width: 0;
}

.prep-list__title {
  font-weight: 700;
  color: rgb(15 23 42);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.prep-list__meta {
  margin-top: 0.2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.prep-list__row .prep-btn {
  width: auto;
  white-space: nowrap;
  padding: 0.5rem 0.9rem;
}

/* Discovery sidebar & strips */
.prep-discover {
  border-radius: 1rem;
  border: 1px solid rgb(226 232 240);
  background: linear-gradient(180deg, #fff 0%, rgb(248 250 252) 100%);
  padding: 1rem;
}

.prep-discover__title {
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgb(100 116 139);
  margin-bottom: 0.65rem;
}

.prep-discover__link {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  border-radius: 0.75rem;
  padding: 0.55rem 0.65rem;
  font-size: 0.8125rem;
  font-weight: 600;
  color: rgb(51 65 85);
  text-decoration: none;
  transition: background 0.15s, color 0.15s;
}

.prep-discover__link:hover,
.prep-discover__link.is-active {
  background: rgb(240 253 250);
  color: rgb(15 118 110);
}

.prep-discover__link.is-active {
  font-weight: 700;
}

.prep-quick-nav {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  padding-bottom: 0.15rem;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.prep-quick-nav a {
  flex-shrink: 0;
  white-space: nowrap;
}

.prep-view-toggle {
  display: inline-flex;
  border-radius: 9999px;
  border: 1px solid rgb(226 232 240);
  background: #fff;
  padding: 0.2rem;
}

.prep-view-toggle button {
  border: none;
  background: transparent;
  border-radius: 9999px;
  padding: 0.35rem 0.85rem;
  font-size: 0.75rem;
  font-weight: 700;
  color: rgb(100 116 139);
  cursor: pointer;
}

.prep-view-toggle button.is-active {
  background: rgb(15 118 110);
  color: #fff;
}

.prep-section-nav {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  padding-bottom: 0.25rem;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.prep-section-nav a {
  scroll-snap-align: start;
  flex-shrink: 0;
  white-space: nowrap;
}

.prep-empty {
  border-radius: 1rem;
  border: 1px dashed rgb(226 232 240);
  background: rgb(248 250 252);
  padding: 2.5rem 1.5rem;
  text-align: center;
  color: rgb(100 116 139);
}