/* =====================================================================
   TECHNICAL WRITING LINTER
   ninadpathak.com/linter/
   ===================================================================== */

/* ── Layout ─────────────────────────────────────────────────────────── */

.linter-section {
  padding: 4rem 0;
}

.linter-layout {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 1.5rem;
  align-items: stretch;
}

@media (max-width: 1024px) {
  .linter-layout {
    grid-template-columns: 1fr;
  }
}

.linter-panel {
  border: 1px solid var(--border);
  background: var(--bg-1);
  display: flex;
  flex-direction: column;
  transition: border-color var(--t);
  height: 600px; /* Fixed height for equal boxes */
}

.linter-panel:focus-within {
  border-color: var(--border-2);
}

.linter-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.65rem 1rem;
  background: var(--bg-2);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.linter-file-label {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--text-3);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.linter-panel-header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.linter-shortcut {
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--text-3);
}

.linter-sample-btn, .linter-action-btn {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--accent);
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
  text-transform: lowercase;
  opacity: 0.8;
  transition: opacity var(--t);
}

.linter-sample-btn:hover, .linter-action-btn:hover {
  opacity: 1;
  text-decoration: underline;
}

/* ── Editor (Input) ─────────────────────────────────────────────────── */

.linter-editor-container {
  flex: 1;
  overflow: auto;
  padding: 1.5rem;
  background: var(--bg-1);
}

.linter-editor {
  width: 100%;
  height: 100%;
  min-height: 100%;
  outline: none;
  font-family: var(--mono);
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--text-1);
  white-space: pre-wrap;
  word-wrap: break-word;
}

.linter-editor:empty:before {
  content: attr(placeholder);
  color: var(--text-3);
  pointer-events: none;
  display: block;
}

.linter-panel-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  border-top: 1px solid var(--border);
  background: var(--bg-2);
  flex-shrink: 0;
}

.linter-char-count {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--text-3);
}

/* ── Results (Output) ───────────────────────────────────────────────── */

.linter-results-container {
  flex: 1;
  overflow-y: auto;
  background: var(--bg);
  scroll-behavior: smooth;
}

.linter-results-content {
  padding: 0;
}

.lint-score-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.5rem;
  border-bottom: 1px solid var(--border);
  background: var(--bg-1);
  position: sticky;
  top: 0;
  z-index: 10;
}

.lint-score-left {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.lint-score-number {
  font-family: var(--mono);
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--text-1);
}

.lint-grade {
  font-family: var(--mono);
  font-size: 1.25rem;
  font-weight: 700;
  display: block;
}

.lint-grade-desc {
  font-size: 0.7rem;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Grade colours */
.lint-grade-a .lint-score-number, .lint-grade-a .lint-grade { color: #22c55e; }
.lint-grade-b .lint-score-number, .lint-grade-b .lint-grade { color: #3b82f6; }
.lint-grade-c .lint-score-number, .lint-grade-c .lint-grade { color: #f59e0b; }
.lint-grade-d .lint-score-number, .lint-grade-d .lint-grade { color: #ef4444; }
.lint-grade-f .lint-score-number, .lint-grade-f .lint-grade { color: #dc2626; }

.lint-score-stats {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--text-3);
  text-align: right;
  line-height: 1.5;
}

.lint-stat-sep {
  opacity: 0.3;
}

/* ── Issue Items ────────────────────────────────────────────────────── */

.lint-group-header {
  padding: 0.65rem 1.5rem;
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  background: var(--bg-2);
  border-bottom: 1px solid var(--border);
  border-top: 1px solid var(--border);
}

.lint-group:first-child .lint-group-header {
  border-top: none;
}

.lint-group-error .lint-group-label { color: #ef4444; }
.lint-group-warning .lint-group-label { color: #f59e0b; }
.lint-group-info .lint-group-label { color: #3b82f6; }

.lint-item {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  transition: background var(--t);
}

.lint-item:last-child {
  border-bottom: none;
}

.lint-item:hover {
  background: var(--bg-1);
}

.lint-item-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.5rem;
}

.lint-item-rule {
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-1);
}

.lint-item-line {
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--text-3);
  opacity: 0.6;
}

.lint-item-excerpt {
  font-family: var(--mono);
  font-size: 0.8125rem;
  color: var(--text-2);
  margin-bottom: 0.4rem;
  line-height: 1.5;
}

.lint-item-message {
  font-size: 0.8125rem;
  color: var(--text-3);
  line-height: 1.5;
}

/* ── Highlighting ───────────────────────────────────────────────────── */

[hidden] {
  display: none !important;
}

.lint-highlight {
  cursor: pointer;
  border-bottom: 2px solid transparent;
  padding-bottom: 1px;
}

.highlight-error   { background: rgba(239, 68, 68, 0.15); border-color: #ef4444; }
.highlight-warning { background: rgba(245, 158, 11, 0.15); border-color: #f59e0b; }
.highlight-info    { background: rgba(59, 130, 246, 0.15); border-color: #3b82f6; }

.lint-highlight:hover {
  background-opacity: 0.25;
}

/* ── Empty State ────────────────────────────────────────────────────── */

.linter-empty {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.linter-empty-inner {
  text-align: center;
  padding: 2rem;
}

.linter-empty-icon {
  font-family: var(--mono);
  font-size: 1.5rem;
  color: var(--border-2);
  margin-bottom: 1rem;
}

.linter-empty p {
  font-size: 0.875rem;
  color: var(--text-3);
}

/* ── Rules Reference ────────────────────────────────────────────────── */

.linter-rules-section {
  padding: 4rem 0;
  border-top: 1px solid var(--border);
}

.linter-rules-header h2 {
  font-size: 1.25rem;
  margin-top: 0.25rem;
}

.linter-rules-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2.5rem;
  margin-top: 2.5rem;
}

.lint-severity-badge {
  font-family: var(--mono);
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 0.2rem 0.5rem;
  border: 1px solid currentColor;
  display: inline-block;
  margin-bottom: 1.25rem;
}

.lint-severity-error { color: #ef4444; }
.lint-severity-warning { color: #f59e0b; }
.lint-severity-info { color: #3b82f6; }

.linter-rule-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.linter-rule-list li {
  font-size: 0.9375rem;
  color: var(--text-2);
  line-height: 1.6;
}

.linter-rule-list li strong {
  color: var(--text-1);
}

@media (max-width: 768px) {
  .linter-panel {
    height: 450px;
  }
  .linter-rules-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}