/* SQL Formatter — Styles */

/* ── Variables ─────────────────────────────────────────────────────────────── */

:root {
  --font-mono: 'Fira Code', 'Cascadia Code', 'JetBrains Mono', 'Consolas', monospace;
  --font-ui: 'Inter', system-ui, -apple-system, sans-serif;
  --radius: 6px;
  --radius-lg: 10px;
  --transition: 0.15s ease;
}

[data-theme="dark"] {
  --bg: #0f1117;
  --bg-surface: #1a1d27;
  --bg-elevated: #22253a;
  --bg-hover: #2a2e42;
  --border: #2e3148;
  --text: #e4e6f0;
  --text-muted: #7b80a4;
  --text-subtle: #4a4f6a;
  --primary: #6c8aff;
  --primary-hover: #5a78f0;
  --secondary: #3a3f5a;
  --secondary-hover: #454a68;
  --accent: #a78bfa;

  /* Syntax highlight */
  --hl-keyword: #6c8aff;
  --hl-string: #7ec8a0;
  --hl-number: #f4b86e;
  --hl-comment: #5a6080;
  --hl-operator: #e06c75;
  --hl-punctuation: #9aa2c8;
  --hl-identifier: #e4e6f0;
}

[data-theme="light"] {
  --bg: #f5f6fa;
  --bg-surface: #ffffff;
  --bg-elevated: #eef0f8;
  --bg-hover: #e4e6f2;
  --border: #d0d4e8;
  --text: #1e2140;
  --text-muted: #5a6080;
  --text-subtle: #a0a8c0;
  --primary: #4c6ef5;
  --primary-hover: #3b5de8;
  --secondary: #e4e6f2;
  --secondary-hover: #d8daf0;
  --accent: #7c3aed;

  /* Syntax highlight */
  --hl-keyword: #2563eb;
  --hl-string: #16a34a;
  --hl-number: #d97706;
  --hl-comment: #9ca3af;
  --hl-operator: #dc2626;
  --hl-punctuation: #6b7280;
  --hl-identifier: #1e2140;
}

/* ── Reset ──────────────────────────────────────────────────────────────────── */

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

html {
  font-size: 14px;
}

body {
  font-family: var(--font-ui);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background var(--transition), color var(--transition);
}

/* ── Header ─────────────────────────────────────────────────────────────────── */

.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
}

.header h1 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text);
}

.subtitle {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 2px;
}

.header-right {
  display: flex;
  gap: 0.5rem;
}

.icon-btn {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: var(--radius);
  padding: 0.35rem 0.65rem;
  font-size: 0.82rem;
  cursor: pointer;
  transition: background var(--transition);
}

.icon-btn:hover {
  background: var(--bg-hover);
}

/* ── Main ───────────────────────────────────────────────────────────────────── */

.main {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 1rem 1.5rem;
  gap: 0.75rem;
  max-width: 1600px;
  width: 100%;
  margin: 0 auto;
}

/* ── Options Panel ──────────────────────────────────────────────────────────── */

.options-panel {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 0.75rem 1rem;
}

.option-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.option-group label {
  font-size: 0.78rem;
  color: var(--text-muted);
  white-space: nowrap;
}

select {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: var(--radius);
  padding: 0.28rem 0.5rem;
  font-size: 0.82rem;
  font-family: var(--font-ui);
  cursor: pointer;
  outline: none;
  transition: border-color var(--transition);
}

select:hover, select:focus {
  border-color: var(--primary);
}

/* ── Editor Container ───────────────────────────────────────────────────────── */

.editor-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  flex: 1;
  min-height: 0;
}

@media (max-width: 768px) {
  .editor-container {
    grid-template-columns: 1fr;
  }
}

.pane {
  display: flex;
  flex-direction: column;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.pane-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem 0.75rem;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.stats {
  font-size: 0.72rem;
  color: var(--text-subtle);
  font-weight: 400;
  text-transform: none;
  letter-spacing: 0;
}

/* ── Textarea / Editor ──────────────────────────────────────────────────────── */

.sql-editor {
  flex: 1;
  width: 100%;
  min-height: 320px;
  padding: 0.75rem;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.6;
  resize: vertical;
  tab-size: 4;
  white-space: pre;
  overflow-wrap: normal;
  overflow-x: auto;
}

.sql-editor::placeholder {
  color: var(--text-subtle);
}

.sql-editor:focus {
  outline: none;
}

/* ── Syntax Highlight Overlay ───────────────────────────────────────────────── */

.output-wrap {
  flex: 1;
  position: relative;
  overflow: hidden;
}

.output-highlight {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  padding: 0.75rem;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.6;
  white-space: pre;
  overflow: auto;
  pointer-events: none;
  color: transparent;
  background: transparent;
  border: none;
  tab-size: 4;
  overflow-wrap: normal;
}

.output-editor {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: transparent;
  color: transparent;
  caret-color: var(--text);
  resize: none;
}

/* Syntax token styles */
.hl-keyword    { color: var(--hl-keyword); font-weight: 600; }
.hl-string     { color: var(--hl-string); }
.hl-number     { color: var(--hl-number); }
.hl-comment    { color: var(--hl-comment); font-style: italic; }
.hl-operator   { color: var(--hl-operator); }
.hl-punctuation { color: var(--hl-punctuation); }

/* ── Action Bar ─────────────────────────────────────────────────────────────── */

.action-bar {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  align-items: center;
}

.btn {
  padding: 0.45rem 1rem;
  border-radius: var(--radius);
  border: 1px solid transparent;
  font-size: 0.85rem;
  font-family: var(--font-ui);
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition), color var(--transition);
}

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

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

.btn-secondary {
  background: var(--secondary);
  color: var(--text);
  border-color: var(--border);
}

.btn-secondary:hover {
  background: var(--secondary-hover);
}

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border-color: var(--border);
}

.btn-ghost:hover {
  background: var(--bg-elevated);
  color: var(--text);
}

/* ── Examples Panel ─────────────────────────────────────────────────────────── */

.examples-wrap {
  position: relative;
}

.examples-panel {
  position: absolute;
  bottom: calc(100% + 0.5rem);
  left: 0;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 0.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  z-index: 100;
  min-width: 200px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.examples-panel.hidden {
  display: none;
}

.example-btn {
  background: transparent;
  border: none;
  color: var(--text);
  font-size: 0.82rem;
  font-family: var(--font-ui);
  text-align: left;
  padding: 0.4rem 0.6rem;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background var(--transition);
}

.example-btn:hover {
  background: var(--bg-elevated);
}

/* ── Footer ─────────────────────────────────────────────────────────────────── */

.footer {
  display: flex;
  justify-content: space-between;
  padding: 0.6rem 1.5rem;
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.footer a {
  color: var(--primary);
  text-decoration: none;
}

.footer a:hover {
  text-decoration: underline;
}