/* ============================================================
   Suththa.org — Components (tree, popups, snackbar, dialogs…)
   ============================================================ */

/* ---------------- Buttons ---------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  border: 1px solid var(--paper-dark);
  background: var(--paper-light);
  color: var(--ink);
  font-size: 0.9rem;
  padding: 0.45rem 0.95rem;
  border-radius: var(--radius);
  transition: background 0.15s, color 0.15s;
}
.btn:hover { background: var(--paper-deep); }
.btn.primary {
  background: var(--accent);
  border-color: var(--accent-deep);
  color: var(--paper-light);
}
.btn.primary:hover { background: var(--accent-deep); }
.btn.success {
  background: var(--success);
  border-color: transparent;
  color: var(--paper-light);
}
.btn.error {
  background: transparent;
  border-color: var(--error);
  color: var(--error);
}
.btn.small { padding: 0.3rem 0.6rem; font-size: 0.82rem; }
.btn.icon {
  padding: 0.4rem;
  border-radius: 50%;
}

/* ---------------- Tipitaka tree ---------------- */
.tree {
  list-style: none;
  margin: 0;
  padding: 0;
}
.tree ul {
  list-style: none;
  margin: 0;
  padding-left: 1.1rem;
  border-left: 1px dotted var(--paper-dark);
}
.tree li { position: relative; }
.tree-node {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.22rem 0.3rem;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.9rem;
}
.tree-node:hover { background: var(--paper-deep); }
.tree-node.active {
  background: var(--accent);
  color: var(--paper-light);
}
.tree-node .tree-toggle {
  border: none;
  background: none;
  color: inherit;
  width: 1.1rem;
  padding: 0;
  text-align: center;
}
.tree-node .tree-icon { opacity: 0.75; }
.tree-node .tree-label {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.tree-node .tree-audio {
  border: none;
  background: none;
  color: var(--accent-deep);
  opacity: 0;
  font-size: 0.85rem;
}
.tree-node:hover .tree-audio { opacity: 1; }
.tree-root-nodes {
  display: flex;
  gap: 0.5rem;
  padding: 0.4rem 0.3rem 0.6rem;
  border-bottom: 1px solid var(--paper-edge);
  margin-bottom: 0.4rem;
}
.tree-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-sinhala-heading);
  font-weight: 700;
  color: var(--accent-deep);
  padding: 0.2rem 0.3rem 0.5rem;
}

/* sidebar tree rendered by app.js */
.tree-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.tree-list ul {
  list-style: none;
  margin: 0;
  padding-left: 1rem;
  border-left: 1px dotted var(--paper-dark);
  display: none;
}
.tree-item.open + ul { display: block; }
.tree-item {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.22rem 0.3rem;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.9rem;
  line-height: 1.4;
}
.tree-item:hover { background: var(--paper-deep); }
.tree-item .tree-arrow {
  width: 0.9rem;
  text-align: center;
  color: var(--accent-soft);
  font-size: 0.75rem;
  flex: none;
  transition: transform 0.15s ease;
}
.tree-item[data-group].open > .tree-arrow { transform: rotate(90deg); }
.tree-item .tree-dot { color: var(--gold); font-size: 0.7rem; width: 0.9rem; text-align: center; flex: none; }
.tree-item .tree-label {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ---------------- Snackbar ---------------- */
.snackbar {
  position: fixed;
  left: 50%;
  bottom: 1.4rem;
  transform: translate(-50%, 120%);
  z-index: 100;
  background: var(--ink);
  color: var(--paper-light);
  border-radius: 30px;
  padding: 0.65rem 1.3rem;
  box-shadow: var(--shadow-page);
  font-size: 0.92rem;
  transition: transform 0.25s ease;
  max-width: 92vw;
  text-align: center;
}
.snackbar.show { transform: translate(-50%, 0); }
[data-theme='dark'] .snackbar { background: var(--paper-light); color: var(--ink); }

/* ---------------- Tooltip ---------------- */
[data-tip] {
  position: relative;
  cursor: help;
}
[data-tip]:hover::after {
  content: attr(data-tip);
  position: absolute;
  bottom: 130%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--ink);
  color: var(--paper-light);
  padding: 0.3rem 0.6rem;
  border-radius: 4px;
  font-size: 0.78rem;
  white-space: nowrap;
  z-index: 60;
}
[data-theme='dark'] [data-tip]:hover::after {
  background: var(--paper-light);
  color: var(--ink);
}

/* ---------------- Dialog (generic) ---------------- */
.dialog-backdrop {
  position: fixed;
  inset: 0;
  z-index: 90;
  background: rgba(40, 28, 10, 0.4);
  display: none;
  align-items: flex-start;
  justify-content: center;
  padding: 3rem 1rem;
  overflow-y: auto;
}
.dialog-backdrop.open { display: flex; }
[data-theme='dark'] .dialog-backdrop { background: rgba(0, 0, 0, 0.55); }

.dialog {
  background: var(--paper-light);
  border: 1px solid var(--paper-dark);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-page);
  width: 100%;
  max-width: 420px;
  padding: 1rem;
}
.dialog-title {
  font-family: var(--font-sinhala-heading);
  font-weight: 700;
  color: var(--accent-deep);
  margin-bottom: 0.8rem;
}
.dialog-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
  margin-top: 1rem;
}

/* ---------------- Inline dictionary popup (reader) ---------------- */
.inline-dict {
  position: fixed;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%) translateY(100%);
  width: 100%;
  max-width: 800px;
  z-index: 80;
  background: var(--paper-light);
  border: 1px solid var(--paper-dark);
  border-top: 3px solid var(--accent);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  box-shadow: var(--shadow-page);
  max-height: 55vh;
  display: flex;
  flex-direction: column;
  pointer-events: none;
  transition: transform 0.25s ease;
}
.inline-dict.open { transform: translateX(-50%) translateY(0); pointer-events: auto; }
.inline-dict .idict-head {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 0.7rem;
  border-bottom: 1px solid var(--paper-edge);
}
.inline-dict .idict-input {
  flex: 1;
  border: 1px solid var(--paper-dark);
  border-radius: var(--radius);
  background: var(--paper);
  padding: 0.35rem 0.7rem;
  font-size: 0.95rem;
}
.inline-dict .idict-body {
  overflow-y: auto;
  padding: 0.5rem 0.7rem;
}

/* ---------------- Filter chips ---------------- */
.chip {
  border: 1px solid var(--paper-dark);
  background: var(--paper-light);
  color: var(--ink-soft);
  border-radius: 14px;
  padding: 0.2rem 0.65rem;
  font-size: 0.8rem;
  white-space: nowrap;
}
.chip:hover { background: var(--paper-deep); color: var(--accent-deep); }
.chip.active { background: var(--accent); border-color: var(--accent); color: var(--paper-light); }

/* ---------------- Loader ---------------- */
.skeleton {
  background: linear-gradient(90deg, var(--paper-deep) 25%, var(--paper-light) 50%, var(--paper-deep) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.2s infinite;
  border-radius: var(--radius);
}
@keyframes shimmer {
  from { background-position: 200% 0; }
  to { background-position: -200% 0; }
}
.skeleton-line { height: 0.9rem; margin-bottom: 0.6rem; }
.skeleton-line.w50 { width: 50%; }
.skeleton-line.w70 { width: 70%; }

/* ---------------- Highlighted word (search results) ---------------- */
mark,
.highlight-word {
  background: var(--highlight);
  color: inherit;
  padding: 0 0.1em;
  border-radius: 2px;
}

/* ---------------- Star icon ---------------- */
.star {
  color: var(--gold);
}
.star-outline { color: var(--ink-faint); }

/* ---------------- Page heading ornament ---------------- */
.ornament {
  text-align: center;
  color: var(--gold);
  letter-spacing: 0.6em;
  font-size: 1rem;
  margin: 0.4rem 0;
  user-select: none;
}