/* ═══════════════════════════════════════════════════════════════════
   sql-tool.css  -  SQL Formatter  |  Scoped under #sqf-root
   Theme: Deep Terminal × Cyan Precision - Database SaaS
   Font: IBM Plex Sans + IBM Plex Mono (distinct from other tools)
═══════════════════════════════════════════════════════════════════ */

/* ── Tokens ────────────────────────────────────────────────────── */
#sqf-root {
  --sqf-bg:           #080c10;
  --sqf-surface:      #0d1117;
  --sqf-surface2:     #131a22;
  --sqf-surface3:     #182030;
  --sqf-border:       #1e2d3d;
  --sqf-border2:      #2a3f56;

  --sqf-cyan:         #00d4aa;
  --sqf-cyan-soft:    rgba(0, 212, 170, 0.12);
  --sqf-cyan2:        #4eecd0;
  --sqf-cyan-dark:    #00a882;
  --sqf-glow:         rgba(0, 212, 170, 0.25);

  --sqf-blue:         #4facde;
  --sqf-blue-soft:    rgba(79, 172, 222, 0.12);
  --sqf-orange:       #f0a04b;
  --sqf-purple:       #b07af0;
  --sqf-yellow:       #e8c84a;
  --sqf-red:          #f06060;
  --sqf-green:        #5ddb8a;

  --sqf-ok:           #5ddb8a;
  --sqf-err:          #f06060;
  --sqf-warn:         #e8c84a;

  --sqf-text:         #c9d8e8;
  --sqf-muted:        #5a7a96;
  --sqf-faint:        #1e2d3d;

  --sqf-radius:       10px;
  --sqf-radius-sm:    6px;
  --sqf-font:         'IBM Plex Sans', 'DM Sans', system-ui, sans-serif;
  --sqf-mono:         'IBM Plex Mono', 'JetBrains Mono', 'Fira Code', monospace;

  --sqf-shadow:       0 8px 40px rgba(0,0,0,0.7);
  --sqf-shadow-sm:    0 2px 12px rgba(0,0,0,0.5);

  font-family: var(--sqf-font);
  background: var(--sqf-bg);
  color: var(--sqf-text);
  min-height: 100vh;
  box-sizing: border-box;
}

#sqf-root *, #sqf-root *::before, #sqf-root *::after {
  box-sizing: inherit;
}

/* ── Hero ──────────────────────────────────────────────────────── */
.sqf-hero {
  text-align: center;
  padding: 54px 24px 38px;
  background:
    radial-gradient(ellipse 70% 50% at 50% -10%, rgba(0,212,170,0.13) 0%, transparent 65%),
    linear-gradient(180deg, #0a0f15 0%, var(--sqf-bg) 100%);
  border-bottom: 1px solid var(--sqf-border);
  position: relative;
  overflow: hidden;
}

/* Grid dots background */
.sqf-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle, rgba(0,212,170,0.08) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 40%, transparent 100%);
}

.sqf-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: var(--sqf-cyan-soft);
  border: 1px solid rgba(0,212,170,0.28);
  color: var(--sqf-cyan2);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 5px 14px;
  border-radius: 4px;
  margin-bottom: 22px;
  font-family: var(--sqf-mono);
}

.sqf-hero-badge svg { width: 13px; height: 13px; }

.sqf-hero h1 {
  font-size: clamp(28px, 5vw, 48px);
  font-weight: 700;
  letter-spacing: -0.025em;
  color: #e4eff8;
  margin: 0 0 14px;
  line-height: 1.1;
}

.sqf-hero h1 span { color: var(--sqf-cyan); }

.sqf-hero p {
  font-size: 1rem;
  color: var(--sqf-muted);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ── App Container ─────────────────────────────────────────────── */
.sqf-app {
  max-width: 1560px;
  margin: 0 auto;
  padding: 24px 20px 56px;
}

/* ── Options Bar ───────────────────────────────────────────────── */
.sqf-options {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  background: var(--sqf-surface);
  border: 1px solid var(--sqf-border);
  border-radius: var(--sqf-radius);
  padding: 12px 16px;
  margin-bottom: 14px;
}

.sqf-opt-group {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.sqf-opt-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--sqf-muted);
  letter-spacing: .07em;
  text-transform: uppercase;
  white-space: nowrap;
  font-family: var(--sqf-mono);
}

.sqf-select {
  appearance: none;
  background: var(--sqf-surface2);
  border: 1px solid var(--sqf-border2);
  border-radius: var(--sqf-radius-sm);
  color: var(--sqf-text);
  font-family: var(--sqf-mono);
  font-size: 12px;
  padding: 6px 28px 6px 10px;
  cursor: pointer;
  transition: border-color .15s, box-shadow .15s;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%235a7a96'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 9px center;
  min-width: 110px;
}

.sqf-select:focus {
  outline: none;
  border-color: var(--sqf-cyan-dark);
  box-shadow: 0 0 0 2px var(--sqf-cyan-soft);
}

.sqf-select option { background: var(--sqf-surface2); }

.sqf-divider {
  width: 1px;
  height: 22px;
  background: var(--sqf-border);
  flex-shrink: 0;
}

/* Toggle switch */
.sqf-toggle-wrap {
  display: flex;
  align-items: center;
  gap: 7px;
  cursor: pointer;
  user-select: none;
}

.sqf-toggle-wrap input { display: none; }

.sqf-toggle-track {
  width: 34px;
  height: 18px;
  background: var(--sqf-faint);
  border-radius: 99px;
  position: relative;
  transition: background .2s;
  flex-shrink: 0;
}

.sqf-toggle-track::after {
  content: '';
  position: absolute;
  top: 3px; left: 3px;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--sqf-muted);
  transition: transform .2s, background .2s;
}

.sqf-toggle-wrap input:checked + .sqf-toggle-track {
  background: var(--sqf-cyan-soft);
  border: 1px solid rgba(0,212,170,0.4);
}

.sqf-toggle-wrap input:checked + .sqf-toggle-track::after {
  transform: translateX(16px);
  background: var(--sqf-cyan);
}

.sqf-toggle-label {
  font-size: 12px;
  font-weight: 500;
  color: var(--sqf-muted);
  white-space: nowrap;
}

/* ── Split Layout ──────────────────────────────────────────────── */
.sqf-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-bottom: 14px;
}

/* ── Panel ─────────────────────────────────────────────────────── */
.sqf-panel {
  display: flex;
  flex-direction: column;
  background: var(--sqf-surface);
  border: 1px solid var(--sqf-border);
  border-radius: var(--sqf-radius);
  overflow: hidden;
  min-height: 460px;
}

.sqf-panel-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--sqf-border);
  background: var(--sqf-surface2);
  font-size: 11px;
  font-weight: 600;
  color: var(--sqf-muted);
  letter-spacing: .08em;
  text-transform: uppercase;
  font-family: var(--sqf-mono);
  flex-shrink: 0;
}

.sqf-panel-header svg { width: 13px; height: 13px; flex-shrink: 0; }

.sqf-panel-header-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--sqf-cyan);
  flex-shrink: 0;
  opacity: .55;
}

.sqf-panel-header-dot.is-live {
  animation: sqf-blink 1.8s ease-in-out infinite;
  opacity: 1;
}

@keyframes sqf-blink {
  0%,100% { opacity: 1; }
  50%      { opacity: .25; }
}

.sqf-panel-actions {
  margin-left: auto;
  display: flex;
  gap: 5px;
}

.sqf-mini-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 9px;
  border-radius: 4px;
  border: 1px solid var(--sqf-border2);
  background: var(--sqf-surface3);
  color: var(--sqf-muted);
  font-family: var(--sqf-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: .04em;
  cursor: pointer;
  transition: all .15s;
  white-space: nowrap;
}

.sqf-mini-btn svg { width: 11px; height: 11px; }

.sqf-mini-btn:hover {
  background: var(--sqf-surface3);
  color: var(--sqf-text);
  border-color: var(--sqf-cyan-dark);
}

/* ── Textarea ──────────────────────────────────────────────────── */
#sqf-input {
  flex: 1;
  width: 100%;
  border: none;
  outline: none;
  resize: none;
  background: var(--sqf-surface);
  color: var(--sqf-text);
  font-family: var(--sqf-mono);
  font-size: 13px;
  line-height: 1.8;
  padding: 16px 18px;
  tab-size: 2;
  caret-color: var(--sqf-cyan);
  min-height: 0;
}

#sqf-input::placeholder { color: var(--sqf-faint); }

/* ── Output ────────────────────────────────────────────────────── */
#sqf-output {
  flex: 1;
  overflow: auto;
  padding: 16px 18px;
  font-family: var(--sqf-mono);
  font-size: 13px;
  line-height: 1.8;
  color: var(--sqf-text);
  white-space: pre;
  word-break: normal;
  overflow-wrap: normal;
  min-height: 0;
  position: relative;
}

/* Scrollbars */
#sqf-input::-webkit-scrollbar,
#sqf-output::-webkit-scrollbar { width: 5px; height: 5px; }
#sqf-input::-webkit-scrollbar-track,
#sqf-output::-webkit-scrollbar-track { background: transparent; }
#sqf-input::-webkit-scrollbar-thumb,
#sqf-output::-webkit-scrollbar-thumb {
  background: var(--sqf-border2);
  border-radius: 99px;
}

/* ── Syntax Highlight Tokens ───────────────────────────────────── */
.sqf-kw    { color: var(--sqf-cyan);   font-weight: 600; }   /* SELECT, FROM, WHERE … */
.sqf-kw2   { color: var(--sqf-blue);   font-weight: 600; }   /* JOIN, ON, AS … */
.sqf-fn    { color: var(--sqf-orange);                   }   /* COUNT(), SUM(), MAX() … */
.sqf-str   { color: var(--sqf-green);                    }   /* 'string literals' */
.sqf-num   { color: var(--sqf-yellow);                   }   /* 123, 3.14 */
.sqf-op    { color: var(--sqf-purple);                   }   /* =, !=, >, <, AND, OR */
.sqf-cmt   { color: var(--sqf-muted);  font-style: italic; } /* -- comments */
.sqf-punct { color: #4a6580;                              }   /* , ; ( ) */

/* Empty state */
.sqf-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  min-height: 220px;
  gap: 12px;
  color: var(--sqf-faint);
  text-align: center;
  padding: 20px;
}

.sqf-empty svg { width: 44px; height: 44px; opacity: .3; }
.sqf-empty p { font-size: 12px; color: var(--sqf-muted); margin: 0; line-height: 1.6; font-family: var(--sqf-mono); }

/* Error state */
.sqf-error-banner {
  display: none;
  align-items: center;
  gap: 9px;
  background: rgba(240,96,96,0.1);
  border: 1px solid rgba(240,96,96,0.3);
  border-radius: var(--sqf-radius-sm);
  color: var(--sqf-err);
  font-size: 12px;
  font-weight: 500;
  padding: 9px 14px;
  margin: 12px 14px 0;
  font-family: var(--sqf-mono);
}

.sqf-error-banner.is-visible { display: flex; }
.sqf-error-banner svg { width: 14px; height: 14px; flex-shrink: 0; }

/* ── Stats Bar ─────────────────────────────────────────────────── */
.sqf-stats-bar {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 8px 14px;
  border-top: 1px solid var(--sqf-border);
  background: var(--sqf-surface2);
  font-size: 11px;
  font-family: var(--sqf-mono);
  color: var(--sqf-muted);
  flex-shrink: 0;
}

.sqf-stats-bar span { white-space: nowrap; }

.sqf-stats-bar strong {
  color: var(--sqf-text);
  font-weight: 600;
}

/* ── Main Action Buttons ───────────────────────────────────────── */
.sqf-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}

.sqf-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 10px 20px;
  border-radius: var(--sqf-radius-sm);
  font-family: var(--sqf-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .03em;
  cursor: pointer;
  transition: all .18s;
  border: 1px solid transparent;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.sqf-btn svg { width: 15px; height: 15px; flex-shrink: 0; }

.sqf-btn-primary {
  background: var(--sqf-cyan);
  color: #040810;
  border-color: var(--sqf-cyan);
}

.sqf-btn-primary:hover {
  background: var(--sqf-cyan2);
  box-shadow: 0 0 24px var(--sqf-glow);
  transform: translateY(-1px);
}

.sqf-btn-primary:active { transform: translateY(0); }

.sqf-btn-ghost {
  background: var(--sqf-surface);
  border-color: var(--sqf-border2);
  color: var(--sqf-muted);
}

.sqf-btn-ghost:hover {
  border-color: var(--sqf-cyan-dark);
  color: var(--sqf-text);
  background: var(--sqf-surface2);
}

.sqf-btn-danger {
  background: var(--sqf-surface);
  border-color: var(--sqf-border2);
  color: var(--sqf-err);
}

.sqf-btn-danger:hover {
  background: rgba(240,96,96,0.1);
  border-color: rgba(240,96,96,0.45);
}

/* ── Sample Queries Ribbon ─────────────────────────────────────── */
.sqf-samples {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
  overflow-x: auto;
  padding-bottom: 4px;
  scrollbar-width: none;
}

.sqf-samples::-webkit-scrollbar { display: none; }

.sqf-samples-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--sqf-muted);
  letter-spacing: .07em;
  text-transform: uppercase;
  font-family: var(--sqf-mono);
  white-space: nowrap;
  flex-shrink: 0;
}

.sqf-sample-chip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 12px;
  background: var(--sqf-surface2);
  border: 1px solid var(--sqf-border);
  border-radius: 4px;
  font-family: var(--sqf-mono);
  font-size: 11px;
  color: var(--sqf-muted);
  cursor: pointer;
  white-space: nowrap;
  flex-shrink: 0;
  transition: all .15s;
}

.sqf-sample-chip:hover {
  border-color: var(--sqf-cyan-dark);
  color: var(--sqf-cyan2);
  background: var(--sqf-cyan-soft);
}

/* ── Toast ─────────────────────────────────────────────────────── */
.sqf-toast {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  background: var(--sqf-surface3);
  border: 1px solid var(--sqf-border2);
  color: var(--sqf-text);
  font-size: 12px;
  font-weight: 600;
  padding: 9px 20px;
  border-radius: 4px;
  box-shadow: var(--sqf-shadow);
  z-index: 10000;
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s, transform .2s;
  white-space: nowrap;
  font-family: var(--sqf-mono);
  letter-spacing: .03em;
}

.sqf-toast.is-visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.sqf-toast.sqf-ok  { border-color: rgba(93,219,138,.4); color: var(--sqf-ok); }
.sqf-toast.sqf-err { border-color: rgba(240,96,96,.4);  color: var(--sqf-err); }

/* ── SEO Section ───────────────────────────────────────────────── */
.sqf-seo {
  max-width: 860px;
  margin: 52px auto 0;
}

.sqf-seo h2 {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -.02em;
  color: var(--sqf-text);
  margin: 0 0 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--sqf-border);
}

.sqf-seo h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--sqf-cyan2);
  margin: 26px 0 8px;
  font-family: var(--sqf-mono);
}

.sqf-seo p {
  color: var(--sqf-muted);
  line-height: 1.75;
  margin: 0 0 14px;
  font-size: .95rem;
}

.sqf-seo code {
  font-family: var(--sqf-mono);
  font-size: .87em;
  background: var(--sqf-surface);
  color: var(--sqf-cyan2);
  padding: 2px 7px;
  border-radius: 4px;
  border: 1px solid var(--sqf-border);
}

.sqf-seo pre {
  background: var(--sqf-surface);
  border: 1px solid var(--sqf-border);
  border-radius: var(--sqf-radius-sm);
  padding: 16px 18px;
  overflow-x: auto;
  font-family: var(--sqf-mono);
  font-size: .86em;
  color: var(--sqf-text);
  line-height: 1.75;
  margin: 0 0 16px;
}

.sqf-seo table {
  width: 100%;
  border-collapse: collapse;
  margin: 10px 0 18px;
  font-size: .9rem;
}

.sqf-seo th {
  background: var(--sqf-surface);
  border: 1px solid var(--sqf-border);
  padding: 9px 14px;
  font-weight: 700;
  text-align: left;
  color: var(--sqf-cyan2);
  font-family: var(--sqf-mono);
  font-size: .82em;
  letter-spacing: .06em;
}

.sqf-seo td {
  border: 1px solid var(--sqf-border);
  padding: 8px 14px;
  color: var(--sqf-muted);
}

/* FAQ */
.sqf-faq-item {
  border: 1px solid var(--sqf-border);
  border-radius: var(--sqf-radius-sm);
  margin-bottom: 8px;
  overflow: hidden;
  transition: border-color .15s;
}

.sqf-faq-item:hover { border-color: var(--sqf-border2); }

.sqf-faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 13px 16px;
  cursor: pointer;
  font-weight: 600;
  font-size: .92rem;
  color: var(--sqf-text);
  background: var(--sqf-surface);
  user-select: none;
  transition: background .15s;
  gap: 12px;
}

.sqf-faq-q:hover { background: var(--sqf-surface2); }

.sqf-faq-chevron {
  transition: transform .2s;
  flex-shrink: 0;
  color: var(--sqf-muted);
}

.sqf-faq-item.is-open .sqf-faq-chevron { transform: rotate(180deg); }

.sqf-faq-a {
  display: none;
  padding: 13px 16px;
  font-size: .9rem;
  color: var(--sqf-muted);
  line-height: 1.7;
  background: var(--sqf-surface2);
  border-top: 1px solid var(--sqf-border);
}

.sqf-faq-item.is-open .sqf-faq-a { display: block; }

/* ── Responsive ────────────────────────────────────────────────── */
@media (max-width: 900px) {
  .sqf-split {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .sqf-panel { min-height: 300px; }

  .sqf-options { gap: 8px; }
  .sqf-opt-group { flex-wrap: wrap; }
}

@media (max-width: 600px) {
  .sqf-hero { padding: 36px 16px 26px; }

  .sqf-actions { gap: 8px; }
  .sqf-btn { padding: 9px 14px; font-size: 12px; }

  .sqf-options { padding: 10px 12px; }

  #sqf-input,
  #sqf-output { font-size: 12px; padding: 12px 14px; }
}