/* ============================================================
   LAYOUT.CSS — DigiOpo
   Sivurakenteet: book-spread, task-spread, book-layout
   ============================================================ */

/* --- Etusivu-tausta ---------------------------------------- */

.etusivu-tausta {
  background: #f8fafc;
}

.etusivu-tausta .book-spread {
  background: white;
  backdrop-filter: none;
}

/* --- Book Spread (etusivu + luokkasivut) ------------------- */

.book-spread {
  display: grid;
  grid-template-columns: var(--sidebar-width) 1fr;
  gap: 0;
  max-width: 1200px;
  margin: 40px auto;
  background: rgba(255, 255, 255, 0.65);
  border-radius: 14px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
  overflow: hidden;
  backdrop-filter: blur(6px);
}

.book-page-left {
  padding: 30px;
  border-right: 1px solid #e5e7eb;
  background: #f9fafb;
}

.book-page-right {
  padding: 40px;
}

/* Sivupalkkilinkit */

.book-page-left a {
  display: block;
  padding: 8px 0;
  color: #374151;
}

.book-page-left a:hover {
  color: #4f46e5;
}

/* Breadcrumb */

.breadcrumb {
  font-size: 14px;
  color: #6b7280;
  margin-bottom: 20px;
}

/* Mobiili */

@media (max-width: 900px) {
  .book-spread {
    grid-template-columns: 1fr;
  }

  .book-page-left {
    border-right: none;
    border-bottom: 1px solid #e5e7eb;
  }
}

/* --- Task Spread (tehtäväpohja) ---------------------------- */

.task-spread {
  display: grid;
  grid-template-columns: 1fr 1fr;
  max-width: 1200px;
  margin: 40px auto;
  background: white;
  border-radius: 14px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
  overflow: hidden;
}

.task-left {
  padding: 40px;
  border-right: 1px solid #e5e7eb;
  background: #fafafa;
}

.task-right {
  padding: 40px;
}

.notes-area {
  width: 100%;
  min-height: 250px;
  padding: 14px;
  border-radius: 8px;
  border: 1px solid #e5e7eb;
  font-size: 16px;
  font-family: inherit;
}

/* Mobiili */

@media (max-width: 900px) {
  .task-spread {
    grid-template-columns: 1fr;
  }

  .task-left {
    border-right: none;
    border-bottom: 1px solid #e5e7eb;
  }
}

/* --- Book Layout (vanha/vaihtoehtoinen rakenne) ------------ */

.book-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 30px;
  padding: 40px 30px;
  max-width: 1200px;
  margin: auto;
}

.book-sidebar {
  background: white;
  border-radius: 12px;
  padding: 20px;
  border: 1px solid var(--border);
  height: fit-content;
}

.book-content {
  max-width: 900px;
  margin: 0 auto;
  padding: 20px;
}

@media (max-width: 768px) {
  .book-layout {
    grid-template-columns: 1fr;
  }
}