:root {
  --bg: #f6f8fa;
  --bg-elev: #ffffff;
  --bg-soft: #fafbfc;
  --fg: #1f2328;
  --fg-muted: #57606a;
  --border: #d0d7de;
  --border-soft: #e1e5ea;
  --header-bg: #004587;
  --header-fg: #ffffff;
  --header-border: #003366;
  --accent: #0969da;
  --accent-soft: #ddf4ff;
  --primary: #2da44e;
  --primary-hover: #2c974b;
  --muted-btn: #444c56;
  --muted-btn-hover: #57606a;
  --danger: #cf222e;
  --danger-hover: #a40e26;

  /* Verse type palette — light pastels */
  --t-v-bg: #eff6ff;  --t-v-border: #3b82f6;  --t-v-ink: #1e40af;
  --t-c-bg: #fffbeb;  --t-c-border: #f59e0b;  --t-c-ink: #92400e;
  --t-p-bg: #faf5ff;  --t-p-border: #a855f7;  --t-p-ink: #6b21a8;
  --t-b-bg: #fdf2f8;  --t-b-border: #ec4899;  --t-b-ink: #9d174d;
  --t-i-bg: #ecfeff;  --t-i-border: #06b6d4;  --t-i-ink: #155e75;
  --t-e-bg: #f8fafc;  --t-e-border: #64748b;  --t-e-ink: #334155;
  --t-o-bg: #f0fdf4;  --t-o-border: #22c55e;  --t-o-ink: #14532d;
}

* { box-sizing: border-box; }
/* Author-side `hidden` rule — the user-agent rule loses to any author selector
   (e.g. `input { display: block }`), so it has to be re-asserted here. */
[hidden] { display: none !important; }
html, body { margin: 0; padding: 0; height: 100%; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 14px;
  color: var(--fg);
  background: var(--bg);
  display: flex;
  flex-direction: column;
  height: 100vh;
}

header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  background: var(--header-bg);
  color: var(--header-fg);
  border-bottom: 1px solid var(--header-border);
}
header h1 { font-size: 16px; margin: 0; font-weight: 600; flex-shrink: 0; }
.actions {
  display: flex;
  align-items: center;
  gap: 6px;
  flex: 1;
  flex-wrap: wrap;
}
.status { font-size: 12px; opacity: 0.85; min-width: 12em; margin-left: 4px; }
.status.error { color: #ffb4b4; opacity: 1; }
.status.ok { color: #a5e3a5; }

button {
  background: var(--muted-btn);
  color: #fff;
  border: 1px solid rgba(0,0,0,0.2);
  border-radius: 6px;
  padding: 5px 10px;
  font-size: 12px;
  cursor: pointer;
  transition: background 0.12s;
}
button:hover { background: var(--muted-btn-hover); }
button.primary { background: var(--primary); }
button.primary:hover { background: var(--primary-hover); }
button.danger { background: var(--danger); }
button.danger:hover { background: var(--danger-hover); }
button.active { background: var(--accent); border-color: var(--accent); }
button.active:hover { background: var(--accent); filter: brightness(1.1); }
button.mini { padding: 2px 6px; font-size: 11px; }
button:disabled { opacity: 0.5; cursor: not-allowed; }

/* "Choose file" label-button — hides the native "no file chosen" text */
header .file-btn {
  display: inline-block;
  margin: 0;
  color: #fff;
  border-radius: 6px;
  padding: 5px 10px;
  font-size: 12px;
  line-height: normal;
  cursor: pointer;
}

/* Header-scoped button styling — translucent white on the brand-blue navbar so
   the muted buttons feel native; primary/active keep their distinctive colors. */
header button,
header .file-btn {
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.22);
}
header button:hover,
header .file-btn:hover { background: rgba(255, 255, 255, 0.22); }
header button.primary { background: var(--primary); border-color: rgba(0,0,0,0.2); }
header button.primary:hover { background: var(--primary-hover); }
header button.active { background: var(--accent); border-color: var(--accent); }
header button.active:hover { background: var(--accent); filter: brightness(1.1); }

/* Right-side header links: Buy Me a Coffee (BMC script injects its own button
   inside .bmc-slot) + GitHub */
.header-right {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.bmc-link {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  line-height: 0;
}
.bmc-link img {
  display: block;
  height: 26px;
  width: auto;
}
.bmc-link:hover img { opacity: 0.9; }
.gh-link {
  color: var(--header-fg);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  padding: 4px;
  border-radius: 6px;
  opacity: 0.85;
  transition: opacity 0.12s, background 0.12s;
}
.gh-link:hover { color: #fff; background: rgba(255,255,255,0.1); opacity: 1; }

main {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--border);
  overflow: hidden;
}
.pane {
  background: var(--bg-elev);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  position: relative;
}
.pane h2 {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin: 0;
  padding: 8px 12px;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  color: var(--fg-muted);
}

#xml {
  flex: 1;
  width: 100%;
  border: 0;
  resize: none;
  padding: 12px;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 13px;
  line-height: 1.5;
  outline: none;
  white-space: pre;
  tab-size: 2;
  background: var(--bg-elev);
  color: var(--fg);
}

.tabs {
  display: flex;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}
.tab {
  background: transparent;
  color: var(--fg-muted);
  border: 0;
  border-bottom: 2px solid transparent;
  border-radius: 0;
  padding: 8px 14px;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  cursor: pointer;
}
.tab:hover { background: var(--border-soft); color: var(--fg); }
.tab.active { color: var(--fg); border-bottom-color: var(--accent); background: var(--bg-elev); }

.tab-body {
  flex: 1;
  overflow: auto;
  padding: 12px;
}
fieldset {
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 10px 12px 12px;
  margin: 0 0 12px;
  background: var(--bg-elev);
}
legend {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--fg-muted);
  padding: 0 6px;
  display: flex;
  align-items: center;
  gap: 8px;
}
label {
  display: block;
  font-size: 12px;
  color: var(--fg-muted);
  margin: 6px 0;
}
.field-label {
  display: block;
  font-size: 12px;
  color: var(--fg-muted);
  margin: 6px 0 2px;
}
input, textarea, select {
  display: block;
  width: 100%;
  margin-top: 2px;
  padding: 5px 7px;
  border: 1px solid var(--border);
  border-radius: 5px;
  font: inherit;
  font-size: 13px;
  color: var(--fg);
  background: var(--bg-elev);
}
textarea { font-family: "SFMono-Regular", Consolas, Menlo, monospace; resize: vertical; }
input:focus, textarea:focus, select:focus {
  outline: 2px solid var(--accent);
  outline-offset: -1px;
  border-color: transparent;
}
.row {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 16px;
  align-items: end;
}

/* Semver editor — bump up/down buttons side by side inside each input */
.semver {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-top: 2px;
}
.semver-part {
  position: relative;
  flex: 1;
  min-width: 64px;
}
.semver-part input {
  margin: 0;
  text-align: center;
  padding: 5px 42px 5px 7px;
  width: 100%;
  -moz-appearance: textfield;
}
.semver-part input::-webkit-outer-spin-button,
.semver-part input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}
.semver-part .bump {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 17px;
  height: 20px;
  padding: 0;
  font-size: 9px;
  line-height: 1;
  background: var(--accent-soft);
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 3px;
  cursor: pointer;
}
.semver-part .bump:hover {
  background: var(--accent);
  color: #fff;
}
.semver-part .bump-down { right: 22px; }
.semver-part .bump-up   { right: 3px; }
.semver-dot {
  color: var(--fg-muted);
  font-weight: 600;
}

/* Verses */
.verse {
  border: 1px solid var(--border);
  border-left: 4px solid var(--t-v-border);
  border-radius: 6px;
  margin: 8px 0;
  padding: 8px 8px 8px 10px;
  background: var(--t-v-bg);
  transition: opacity 0.12s, box-shadow 0.12s;
}
.verse.dragging { opacity: 0.4; }
.verse.drop-before { box-shadow: 0 -3px 0 0 var(--accent); }
.verse.drop-after  { box-shadow: 0  3px 0 0 var(--accent); }
.grip {
  cursor: grab;
  user-select: none;
  color: var(--fg-muted);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: -3px;
  padding: 0 6px 0 2px;
  display: inline-block;
}
.grip:active { cursor: grabbing; }
.grip:hover { color: var(--fg); }
.verse[data-type="v"] { background: var(--t-v-bg); border-left-color: var(--t-v-border); }
.verse[data-type="c"] { background: var(--t-c-bg); border-left-color: var(--t-c-border); }
.verse[data-type="p"] { background: var(--t-p-bg); border-left-color: var(--t-p-border); }
.verse[data-type="b"] { background: var(--t-b-bg); border-left-color: var(--t-b-border); }
.verse[data-type="i"] { background: var(--t-i-bg); border-left-color: var(--t-i-border); }
.verse[data-type="e"] { background: var(--t-e-bg); border-left-color: var(--t-e-border); }
.verse[data-type="o"] { background: var(--t-o-bg); border-left-color: var(--t-o-border); }

.verse-header {
  display: flex;
  gap: 8px;
  align-items: center;
  margin-bottom: 6px;
  flex-wrap: wrap;
}
.verse-header label {
  font-size: 11px;
  color: var(--fg-muted);
  display: flex;
  align-items: center;
  gap: 4px;
  margin: 0;
}
.verse-header input, .verse-header select {
  width: auto;
  margin: 0;
  padding: 3px 6px;
  font-size: 12px;
}
.verse-header input { width: 60px; }
.verse-header select { width: auto; }
.verse-tag {
  font-family: "SFMono-Regular", Consolas, Menlo, monospace;
  font-size: 11px;
  padding: 2px 6px;
  border-radius: 999px;
  font-weight: 600;
}
.verse[data-type="v"] .verse-tag { background: var(--t-v-bg); color: var(--t-v-ink); border: 1px solid var(--t-v-border); }
.verse[data-type="c"] .verse-tag { background: var(--t-c-bg); color: var(--t-c-ink); border: 1px solid var(--t-c-border); }
.verse[data-type="p"] .verse-tag { background: var(--t-p-bg); color: var(--t-p-ink); border: 1px solid var(--t-p-border); }
.verse[data-type="b"] .verse-tag { background: var(--t-b-bg); color: var(--t-b-ink); border: 1px solid var(--t-b-border); }
.verse[data-type="i"] .verse-tag { background: var(--t-i-bg); color: var(--t-i-ink); border: 1px solid var(--t-i-border); }
.verse[data-type="e"] .verse-tag { background: var(--t-e-bg); color: var(--t-e-ink); border: 1px solid var(--t-e-border); }
.verse[data-type="o"] .verse-tag { background: var(--t-o-bg); color: var(--t-o-ink); border: 1px solid var(--t-o-border); }

.verse-header .spacer { flex: 1; }
.verse textarea {
  width: 100%;
  font-size: 12.5px;
  line-height: 1.5;
  background: var(--bg-elev);
  resize: none;
  overflow-y: hidden;
}

/* Verse formatting toolbar (OpenLP tags) */
.verse-toolbar {
  display: flex;
  gap: 4px;
  margin: 2px 0 6px;
  flex-wrap: wrap;
}
.verse-toolbar .fmt-btn {
  padding: 2px 8px;
  font-size: 11px;
  line-height: 1.3;
  background: var(--bg-elev);
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: 4px;
  min-width: 26px;
  text-align: center;
}
.verse-toolbar .fmt-btn:hover {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent);
}
.verse-toolbar .fmt-btn b { font-weight: 800; }
.verse-toolbar .fmt-btn i { font-style: italic; font-family: serif; padding: 0 2px; }

/* Preview */
.preview .pv-verse {
  margin-bottom: 14px;
  padding: 10px 14px;
  border-left: 4px solid var(--t-v-border);
  background: var(--t-v-bg);
  border-radius: 0 8px 8px 0;
  color: var(--fg);
}
.preview .pv-verse[data-type="v"] { background: var(--t-v-bg); border-left-color: var(--t-v-border); }
.preview .pv-verse[data-type="c"] {
  background: var(--t-c-bg);
  border-left: 6px solid var(--t-c-border);
}
.preview .pv-verse[data-type="p"] { background: var(--t-p-bg); border-left-color: var(--t-p-border); }
.preview .pv-verse[data-type="b"] { background: var(--t-b-bg); border-left-color: var(--t-b-border); }
.preview .pv-verse[data-type="i"] { background: var(--t-i-bg); border-left-color: var(--t-i-border); }
.preview .pv-verse[data-type="e"] { background: var(--t-e-bg); border-left-color: var(--t-e-border); }
.preview .pv-verse[data-type="o"] { background: var(--t-o-bg); border-left-color: var(--t-o-border); }

.preview .pv-head {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--fg-muted);
  margin-bottom: 6px;
  display: flex;
  gap: 8px;
  align-items: center;
}
.preview .pv-verse[data-type="v"] .pv-head { color: var(--t-v-ink); }
.preview .pv-verse[data-type="c"] .pv-head { color: var(--t-c-ink); font-weight: 700; }
.preview .pv-verse[data-type="p"] .pv-head { color: var(--t-p-ink); }
.preview .pv-verse[data-type="b"] .pv-head { color: var(--t-b-ink); }
.preview .pv-verse[data-type="i"] .pv-head { color: var(--t-i-ink); }
.preview .pv-verse[data-type="e"] .pv-head { color: var(--t-e-ink); }
.preview .pv-verse[data-type="o"] .pv-head { color: var(--t-o-ink); }

.preview .pv-tag {
  background: var(--bg-elev);
  color: var(--accent);
  font-family: "SFMono-Regular", Consolas, Menlo, monospace;
  font-size: 10px;
  padding: 1px 6px;
  border-radius: 999px;
  font-weight: 600;
  text-transform: none;
  letter-spacing: 0;
  border: 1px solid currentColor;
}
.preview .pv-body {
  font-size: 14px;
  line-height: 1.55;
  white-space: pre-wrap;
}
.preview .pv-verse[data-type="c"] .pv-body { font-weight: 600; font-style: italic; }
.preview .empty { color: var(--fg-muted); font-style: italic; }

/* Validation */
.validation {
  background: #fff8e1;
  border: 1px solid #f0b429;
  border-left: 4px solid #d97706;
  border-radius: 6px;
  padding: 8px 12px;
  margin: 0 0 12px;
  font-size: 12.5px;
  color: #78350f;
}
.validation strong { display: block; margin-bottom: 4px; }
.validation ul { margin: 0; padding-left: 18px; }

/* Drag-and-drop overlay — scoped to the XML pane. The `[hidden]` rule has
   higher specificity than `.drop-overlay`, so toggling the attribute reliably
   hides the element (otherwise our `display: flex` overrides the browser's
   default `[hidden] { display: none }`). */
.drop-overlay[hidden] { display: none; }
.drop-overlay {
  position: absolute;
  inset: 0;
  background: rgba(9, 105, 218, 0.18);
  border: 4px dashed var(--accent);
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}
.drop-overlay > div {
  background: var(--bg-elev);
  color: var(--accent);
  font-size: 18px;
  font-weight: 600;
  padding: 12px 20px;
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.15);
}