/* ============================================================
   Suththa.org — App Layout (header / sidebar / main)
   ============================================================ */

/* ---------------- App shell ---------------- */
.app {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.app-main {
  flex: 1;
  display: flex;
  min-height: 0;
}

.app-content {
  flex: 1;
  min-width: 0;
}

/* ---------------- Header ---------------- */
.app-header {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  min-height: var(--header-h);
  padding: 0 0.7rem;
  background: linear-gradient(180deg, var(--paper-light), var(--paper));
  border-bottom: 1px solid var(--paper-dark);
  box-shadow: var(--shadow-soft);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-sinhala-heading);
  font-weight: 800;
  font-size: 1.15rem;
  color: var(--accent-deep);
  white-space: nowrap;
  margin-right: 0.4rem;
}
.brand .brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.9rem;
  height: 1.9rem;
  border: 1.5px solid var(--gold);
  border-radius: 50%;
  font-size: 1rem;
  color: var(--gold);
  background: radial-gradient(circle at 35% 30%, var(--paper-light), var(--paper-deep));
}
.brand small {
  display: block;
  font-size: 0.6rem;
  letter-spacing: 0.18em;
  color: var(--ink-faint);
  font-weight: 500;
}

/* Search box */
.header-search {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  min-width: 8rem;
  max-width: 34rem;
  margin: 0 auto;
}
.search-type-select {
  border: 1px solid var(--paper-dark);
  background: var(--paper-light);
  border-radius: var(--radius);
  padding: 0.3rem 0.4rem;
  font-size: 0.85rem;
  color: var(--accent-deep);
  max-width: 9.5rem;
}
.search-input-wrap {
  position: relative;
  flex: 1;
}
.search-input {
  width: 100%;
  border: 1px solid var(--paper-dark);
  border-radius: 20px;
  background: var(--paper-light);
  padding: 0.42rem 2.2rem 0.42rem 0.9rem;
  font-size: 0.92rem;
}
.search-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--highlight-soft);
}
.search-clear {
  position: absolute;
  right: 0.3rem;
  top: 50%;
  transform: translateY(-50%);
  border: none;
  background: none;
  color: var(--ink-faint);
  font-size: 1rem;
  padding: 0.2rem 0.4rem;
}
.search-clear:hover { color: var(--error); }

/* Header actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}
.header-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  border: none;
  background: transparent;
  color: var(--accent-deep);
  font-size: 0.85rem;
  padding: 0.4rem 0.55rem;
  border-radius: var(--radius);
}
.header-btn:hover { background: var(--paper-deep); }
.header-btn.active {
  background: var(--accent);
  color: var(--paper-light);
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: none;
  background: transparent;
  color: var(--ink-soft);
  border-radius: 50%;
  padding: 0.3rem;
  min-width: 2rem;
  min-height: 2rem;
  font-size: 1rem;
}
.icon-btn:hover { background: var(--paper-deep); color: var(--accent-deep); }

/* ---------------- Sidebar (Tipitaka tree) ---------------- */
.sidebar {
  position: fixed;
  top: var(--header-h);
  bottom: 0;
  left: 0;
  z-index: 30;
  width: 320px;
  max-width: 88vw;
  background: var(--paper-light);
  border-right: 1px solid var(--paper-dark);
  box-shadow: var(--shadow-soft);
  overflow-y: auto;
  padding: 0.6rem;
  transform: translateX(-105%);
  transition: transform 0.25s ease;
}
.sidebar.open { transform: translateX(0); }
.sidebar-backdrop {
  position: fixed;
  inset: var(--header-h) 0 0 0;
  z-index: 29;
  background: rgba(40, 28, 10, 0.35);
  display: none;
}
.sidebar-backdrop.show { display: block; }
[data-theme='dark'] .sidebar-backdrop { background: rgba(0, 0, 0, 0.5); }

/* ---------------- Nav links (main-nav) ---------------- */
.nav-links {
  display: flex;
  align-items: center;
  gap: 0.15rem;
  margin-left: auto;
}
.nav-links a {
  display: inline-block;
  color: var(--ink-soft);
  font-size: 0.88rem;
  padding: 0.4rem 0.6rem;
  border-radius: var(--radius);
}
.nav-links a:hover { background: var(--paper-deep); color: var(--accent-deep); text-decoration: none; }
.nav-links a.active { background: var(--accent); color: var(--paper-light); }

/* ---------------- Header search dropdown ---------------- */
#search-box { flex: 1; max-width: 34rem; margin: 0 auto; position: relative; }
#search-box .search-input-wrap { position: relative; }
.search-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  z-index: 60;
  background: var(--paper-light);
  border: 1px solid var(--paper-dark);
  border-radius: var(--radius);
  box-shadow: var(--shadow-page);
  max-height: 60vh;
  overflow-y: auto;
  display: none;
  margin-top: 0.25rem;
}
.search-dropdown.show { display: block; }
.sd-item {
  padding: 0.45rem 0.7rem;
  cursor: pointer;
  border-bottom: 1px solid var(--paper-edge);
  font-size: 0.9rem;
  display: flex;
  gap: 0.5rem;
  align-items: baseline;
}
.sd-item:hover { background: var(--paper-deep); }
.sd-item .sd-key { margin-left: auto; font-size: 0.75rem; }
.sd-empty { padding: 0.6rem 0.7rem; font-size: 0.9rem; }
.search-filters {
  display: flex;
  gap: 0.7rem;
  justify-content: flex-end;
  align-items: center;
  margin-top: 0.15rem;
}
.search-filters label { display: inline-flex; gap: 0.25rem; align-items: center; cursor: pointer; }
.search-filters input { accent-color: var(--accent); }

/* ---------------- Tabs strip ---------------- */
.tabs-strip {
  display: flex;
  gap: 0.3rem;
  align-items: center;
  overflow-x: auto;
  padding: 0.4rem 0.7rem;
  border-bottom: 1px solid var(--paper-edge);
  background: var(--paper-light);
  flex-wrap: nowrap;
}
.tab-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  border: 1px solid var(--paper-edge);
  background: var(--paper);
  color: var(--ink-soft);
  font-size: 0.85rem;
  padding: 0.25rem 0.6rem;
  border-radius: 14px;
  cursor: pointer;
  white-space: nowrap;
  max-width: 16rem;
}
.tab-chip .tab-name {
  overflow: hidden;
  text-overflow: ellipsis;
}
.tab-chip.active {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--paper-light);
}
.tab-chip .tab-close {
  border: none;
  background: none;
  color: inherit;
  opacity: 0.7;
  font-size: 0.9rem;
  padding: 0;
}
.tab-chip .tab-close:hover { opacity: 1; color: var(--error); }

/* ---------------- Bottom toolbar / floating actions ---------------- */
.toolbar-row {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  flex-wrap: wrap;
  padding: 0.5rem 0.7rem;
  background: var(--paper-light);
  border-bottom: 1px solid var(--paper-edge);
}
.toolbar-row .spacer { flex: 1; }
.seg {
  display: inline-flex;
  border: 1px solid var(--paper-dark);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--paper);
}
.seg button {
  border: none;
  background: transparent;
  color: var(--ink-soft);
  padding: 0.32rem 0.7rem;
  font-size: 0.85rem;
}
.seg button.active {
  background: var(--accent);
  color: var(--paper-light);
}
.seg button:not(:last-child) { border-right: 1px solid var(--paper-dark); }

/* ---------------- Generic card ---------------- */
.card {
  background: var(--paper-light);
  border: 1px solid var(--paper-edge);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  padding: 1.1rem;
}

/* Simple data table */
.simple-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--paper-light);
  border: 1px solid var(--paper-edge);
  border-radius: var(--radius);
  overflow: hidden;
}
.simple-table th,
.simple-table td {
  padding: 0.5rem 0.7rem;
  border-bottom: 1px solid var(--paper-edge);
  text-align: left;
  vertical-align: top;
}
.simple-table th {
  background: var(--paper-deep);
  font-weight: 600;
  font-size: 0.88rem;
}
.simple-table tr:last-child td { border-bottom: none; }
.simple-table tr:hover td { background: rgba(160, 120, 60, 0.06); }

/* ---------------- Reader layout ---------------- */
.reader-layout {
  display: flex;
  min-height: calc(100vh - var(--header-h));
}
.reader-main {
  flex: 1;
  min-width: 0;
}

/* ---------------- Footer ---------------- */
.app-footer {
  border-top: 1px solid var(--paper-dark);
  background: var(--paper-light);
  text-align: center;
  padding: 0.9rem 1rem;
  color: var(--ink-faint);
  font-size: 0.8rem;
}