@font-face {
  font-family: 'FMBindumathi';
  src: url('fonts/FMBindumathi.ttf') format('truetype');
  font-display: block;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --primary: #6c3fd6;
  --primary-light: #ede8fb;
  --border: #ddd;
  --bg: #f7f6fc;
  --text: #1a1a2e;
  --muted: #666;
  --radius: 10px;
  --shadow: 0 2px 12px rgba(108, 63, 214, 0.10);
  --gns-active-font: 'FMBindumathi';
}

body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  padding: 2rem 1rem 4rem;
}

.container {
  max-width: 960px;
  margin: 0 auto;
}

/* ── Header ── */
header {
  text-align: center;
  margin-bottom: 2.5rem;
}

header h1 {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: -0.5px;
}

header .subtitle {
  margin-top: 0.4rem;
  color: var(--muted);
  font-size: 1rem;
}

/* ── Editor stack ── */
.editor {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.text-panel {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.text-panel label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

textarea {
  width: 100%;
  height: 340px;
  padding: 1rem;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  font-size: 1.15rem;
  line-height: 1.8;
  resize: vertical;
  background: #fff;
  color: var(--text);
  box-shadow: var(--shadow);
  transition: border-color 0.2s;
  outline: none;
}

textarea:focus {
  border-color: var(--primary);
}

textarea#singlish {
  font-family: 'Inter', monospace;
}

textarea#sinhala {
  font-family: 'Noto Sans Sinhala', 'Iskoola Pota', 'FM Abhaya', system-ui;
  font-size: 1.3rem;
  background: var(--primary-light);
  border-color: #c4b0f0;
  cursor: default;
  color: #2d1657;
}

textarea#sinhala.gns-font {
  font-family: var(--gns-active-font), serif;
  font-size: 1.3rem;
}


/* ── Controls row ── */
.controls {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  margin-top: 0.8rem;
}


button.clear-btn {
  padding: 0.4rem 1rem;
  border: 1.5px solid var(--border);
  border-radius: 6px;
  background: #fff;
  color: var(--muted);
  font-size: 0.85rem;
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s;
}

button.clear-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
}

/* ── Reference tables ── */
.reference {
  margin-top: 3rem;
}

.reference h2 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
}

.ref-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.2rem;
}

.ref-card {
  background: #fff;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  box-shadow: var(--shadow);
}

.ref-card h3 {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  margin-bottom: 0.75rem;
}

.ref-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.ref-table th {
  text-align: left;
  padding: 0.25rem 0.5rem;
  font-size: 0.75rem;
  color: var(--muted);
  border-bottom: 1px solid var(--border);
}

.ref-table td {
  padding: 0.28rem 0.5rem;
  border-bottom: 1px solid #f0f0f0;
}

.ref-table td:first-child {
  font-family: 'Courier New', monospace;
  font-weight: 600;
  color: #444;
  width: 40%;
}

.ref-table td:nth-child(2) {
  font-family: 'Noto Sans Sinhala', 'Iskoola Pota', system-ui;
  font-size: 1.1rem;
  color: var(--primary);
  width: 30%;
}

.ref-table td:nth-child(3) {
  color: var(--muted);
  font-size: 0.8rem;
}

/* ── GNS Line-by-Line Editor ── */
.gns-line-editor {
  flex-direction: column;
  border: 1.5px solid #c4b0f0;
  border-radius: var(--radius);
  background: var(--primary-light);
  overflow: hidden;
  box-shadow: var(--shadow);
  height: 340px;
  resize: vertical;
}

.gns-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.35rem 0.75rem;
  background: #d5c8f7;
  border-bottom: 1px solid #c4b0f0;
  flex-shrink: 0;
}

.gns-line-count {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.07em;
}

.gns-copy-all-btn {
  padding: 0.2rem 0.7rem;
  border: 1.5px solid var(--primary);
  border-radius: 5px;
  background: #fff;
  color: var(--primary);
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
  font-family: 'Inter', system-ui, sans-serif;
}

.gns-copy-all-btn:hover {
  background: var(--primary);
  color: #fff;
}

.gns-lines {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 0.3rem 0;
}

.gns-placeholder {
  padding: 2rem 1rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
  opacity: 0.55;
}

/* Font picker bar */
.gns-font-bar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.75rem;
  background: #ede8fb;
  border-bottom: 1px solid rgba(196, 176, 240, 0.5);
  flex-shrink: 0;
  flex-wrap: wrap;
}

.gns-font-bar-label {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  white-space: nowrap;
  flex-shrink: 0;
}

.gns-font-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.gns-font-pill {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.15rem;
  padding: 0.45rem 0.75rem;
  border: 1.5px solid #c4b0f0;
  border-radius: 8px;
  background: #fff;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s, box-shadow 0.15s;
  min-width: 110px;
  text-align: left;
}

.gns-font-pill:hover {
  border-color: var(--primary);
  background: #f5f0ff;
  box-shadow: 0 2px 8px rgba(108, 63, 214, 0.12);
}

.gns-font-pill.active {
  border-color: var(--primary);
  background: var(--primary);
  box-shadow: 0 2px 10px rgba(108, 63, 214, 0.3);
}

.gns-pill-name {
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 0.65rem;
  font-weight: 700;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  line-height: 1;
}

.gns-font-pill.active .gns-pill-name {
  color: rgba(255, 255, 255, 0.75);
}

.gns-pill-preview {
  font-size: 1.05rem;
  line-height: 1.4;
  color: var(--text);
  white-space: nowrap;
}

.gns-font-pill.active .gns-pill-preview {
  color: #fff;
}

.gns-pill-preview-empty {
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 0.75rem;
  color: var(--muted);
  opacity: 0.5;
  font-style: italic;
}

.gns-line-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.28rem 0.65rem;
  border-bottom: 1px solid rgba(196, 176, 240, 0.35);
  transition: background 0.1s;
  min-height: 2.2rem;
}

.gns-line-row:hover {
  background: rgba(255, 255, 255, 0.55);
}

.gns-line-row:last-child {
  border-bottom: none;
}

.gns-line-num {
  min-width: 1.8rem;
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--primary);
  opacity: 0.45;
  text-align: right;
  flex-shrink: 0;
  font-family: 'Courier New', monospace;
  user-select: none;
}

.gns-line-text {
  flex: 1;
  font-family: var(--gns-active-font), serif;
  font-size: 1.2rem;
  line-height: 1.5;
  color: #2d1657;
  white-space: pre;
  overflow: hidden;
  text-overflow: ellipsis;
  min-height: 1.5em;
}

.gns-line-empty .gns-line-text {
  opacity: 0.25;
}

.gns-line-empty .gns-line-text::after {
  content: '—';
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 0.75rem;
  opacity: 0.4;
}

.gns-char-count {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--primary);
  background: rgba(255, 255, 255, 0.75);
  border: 1px solid rgba(196, 176, 240, 0.6);
  border-radius: 4px;
  padding: 0.1rem 0.4rem;
  min-width: 3rem;
  text-align: right;
  flex-shrink: 0;
  font-family: 'Courier New', monospace;
  letter-spacing: -0.03em;
}

.gns-ch-label {
  font-size: 0.6rem;
  font-weight: 400;
  color: var(--muted);
  margin-left: 1px;
  font-family: 'Inter', system-ui, sans-serif;
  letter-spacing: 0;
}

.gns-copy-btn {
  padding: 0.15rem 0.5rem;
  border: 1px solid #c4b0f0;
  border-radius: 4px;
  background: #fff;
  color: var(--primary);
  font-size: 0.72rem;
  font-weight: 600;
  cursor: pointer;
  flex-shrink: 0;
  transition: background 0.15s, border-color 0.15s, color 0.15s, opacity 0.15s;
  opacity: 0;
  font-family: 'Inter', system-ui, sans-serif;
}

.gns-line-row:hover .gns-copy-btn {
  opacity: 1;
}

.gns-copy-btn:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.gns-copy-btn.copied {
  background: #16a34a;
  border-color: #16a34a;
  color: #fff;
  opacity: 1;
}

/* ── Responsive ── */
@media (max-width: 600px) {
  header h1 {
    font-size: 1.6rem;
  }
}