/* ═══════════════════════════════════════════════════════════════════
   JSON Formatter & Validator - Scoped Styles
   Prefix: .jt-  (json-tool)
   All rules scoped so they CANNOT affect other tools.
   ═══════════════════════════════════════════════════════════════════ */

/* ── CSS Variables (light mode) ──────────────────────────────────── */
.jt-root {
  --jt-brand:        #10b77f;
  --jt-brand-mid:    #0d9e6e;
  --jt-brand-dark:   #087a54;
  --jt-brand-glow:   rgba(16, 183, 127, 0.18);
  --jt-brand-light:  #e6f9f3;

  --jt-bg:           #f8fafb;
  --jt-surface:      #ffffff;
  --jt-surface-2:    #f1f5f9;
  --jt-border:       #e2e8f0;
  --jt-border-focus: #10b77f;

  --jt-text:         #1a202c;
  --jt-text-2:       #4a5568;
  --jt-text-3:       #718096;

  --jt-valid-bg:     #ecfdf5;
  --jt-valid-text:   #065f46;
  --jt-valid-border: #6ee7b7;
  --jt-error-bg:     #fff1f2;
  --jt-error-text:   #9f1239;
  --jt-error-border: #fda4af;
  --jt-warn-bg:      #fffbeb;
  --jt-warn-text:    #92400e;

  /* Syntax colours */
  --jt-syn-key:      #0369a1;
  --jt-syn-str:      #15803d;
  --jt-syn-num:      #7c3aed;
  --jt-syn-bool:     #b45309;
  --jt-syn-null:     #6b7280;
  --jt-syn-brace:    #374151;

  --jt-radius:       12px;
  --jt-radius-sm:    8px;
  --jt-shadow:       0 1px 3px rgba(0,0,0,.07), 0 4px 16px rgba(0,0,0,.06);
  --jt-shadow-focus: 0 0 0 3px var(--jt-brand-glow);
  --jt-transition:   all .18s cubic-bezier(.4,0,.2,1);
}

/* ── Dark Mode ───────────────────────────────────────────────────── */
.jt-root.jt-dark {
  --jt-bg:           #0f172a;
  --jt-surface:      #1e293b;
  --jt-surface-2:    #273348;
  --jt-border:       #334155;
  --jt-text:         #f1f5f9;
  --jt-text-2:       #cbd5e1;
  --jt-text-3:       #94a3b8;

  --jt-valid-bg:     #052e16;
  --jt-valid-text:   #6ee7b7;
  --jt-valid-border: #065f46;
  --jt-error-bg:     #1f0a0a;
  --jt-error-text:   #fda4af;
  --jt-error-border: #9f1239;
  --jt-warn-bg:      #1c1205;
  --jt-warn-text:    #fcd34d;

  --jt-syn-key:      #38bdf8;
  --jt-syn-str:      #86efac;
  --jt-syn-num:      #c084fc;
  --jt-syn-bool:     #fbbf24;
  --jt-syn-null:     #94a3b8;
  --jt-syn-brace:    #e2e8f0;

  --jt-shadow:       0 1px 3px rgba(0,0,0,.3), 0 4px 20px rgba(0,0,0,.4);
}

/* ── Reset (scoped) ──────────────────────────────────────────────── */
.jt-root *, .jt-root *::before, .jt-root *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* ── Wrapper ─────────────────────────────────────────────────────── */
.jt-root {
  background: var(--jt-bg);
  color: var(--jt-text);
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  font-size: 15px;
  line-height: 1.6;
  transition: background .25s, color .25s;
  padding-bottom: 60px;
}

/* ── Hero Header ─────────────────────────────────────────────────── */
.jt-hero {
  background: linear-gradient(135deg, #0f2a1e 0%, #0d3b28 50%, #0a4f36 100%);
  padding: 40px 24px 36px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.jt-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 70% 60% at 50% 100%, rgba(16,183,127,.22) 0%, transparent 70%);
  pointer-events: none;
}
.jt-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(16,183,127,.15);
  border: 1px solid rgba(16,183,127,.3);
  color: #6ee7b7;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .05em;
  text-transform: uppercase;
  padding: 4px 12px;
  border-radius: 99px;
  margin-bottom: 14px;
}
.jt-hero-badge svg { width: 14px; height: 14px; }
.jt-hero h1 {
  font-size: clamp(24px, 4vw, 36px);
  font-weight: 800;
  color: #f0fdf4;
  letter-spacing: -.02em;
  margin-bottom: 10px;
}
.jt-hero h1 span { color: #34d399; }
.jt-hero p {
  color: #a7f3d0;
  font-size: 15px;
  max-width: 520px;
  margin: 0 auto;
  opacity: .9;
}

/* ── Dark mode toggle in hero ────────────────────────────────────── */
.jt-hero-controls {
  position: absolute;
  top: 16px;
  right: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.jt-toggle-dark {
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.15);
  color: #d1fae5;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--jt-transition);
}
.jt-toggle-dark:hover { background: rgba(255,255,255,.15); }
.jt-toggle-dark svg { width: 18px; height: 18px; }

/* ── Main container ──────────────────────────────────────────────── */
.jt-container {
  max-width: 1340px;
  margin: 0 auto;
  padding: 24px 16px 0;
}

/* ── Toolbar (above panels) ──────────────────────────────────────── */
.jt-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 14px;
}
.jt-toolbar-left, .jt-toolbar-right {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

/* Buttons */
.jt-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--jt-radius-sm);
  font-size: 13.5px;
  font-weight: 600;
  cursor: pointer;
  border: 1.5px solid transparent;
  transition: var(--jt-transition);
  white-space: nowrap;
  line-height: 1;
  letter-spacing: -.01em;
}
.jt-btn svg { width: 15px; height: 15px; flex-shrink: 0; }
.jt-btn:active { transform: scale(.97); }

.jt-btn-primary {
  background: var(--jt-brand);
  color: #fff;
  border-color: var(--jt-brand-mid);
  box-shadow: 0 1px 3px rgba(16,183,127,.25);
}
.jt-btn-primary:hover {
  background: var(--jt-brand-mid);
  box-shadow: 0 2px 8px rgba(16,183,127,.35);
}

.jt-btn-outline {
  background: var(--jt-surface);
  color: var(--jt-text-2);
  border-color: var(--jt-border);
}
.jt-btn-outline:hover {
  border-color: var(--jt-brand);
  color: var(--jt-brand);
  background: var(--jt-brand-light);
}
.jt-dark .jt-btn-outline:hover { background: rgba(16,183,127,.1); }

.jt-btn-danger {
  background: var(--jt-surface);
  color: #dc2626;
  border-color: var(--jt-border);
}
.jt-btn-danger:hover {
  background: #fff1f2;
  border-color: #fca5a5;
}
.jt-dark .jt-btn-danger:hover { background: #1f0a0a; }

/* Auto-format toggle */
.jt-auto-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 500;
  color: var(--jt-text-2);
  cursor: pointer;
  user-select: none;
  padding: 7px 12px;
  border-radius: var(--jt-radius-sm);
  border: 1.5px solid var(--jt-border);
  background: var(--jt-surface);
  transition: var(--jt-transition);
}
.jt-auto-toggle:hover { border-color: var(--jt-brand); color: var(--jt-brand); }
.jt-auto-toggle input { display: none; }
.jt-switch {
  width: 32px;
  height: 18px;
  background: var(--jt-border);
  border-radius: 99px;
  position: relative;
  transition: var(--jt-transition);
  flex-shrink: 0;
}
.jt-switch::after {
  content: '';
  position: absolute;
  width: 12px;
  height: 12px;
  background: #fff;
  border-radius: 50%;
  top: 3px;
  left: 3px;
  transition: var(--jt-transition);
  box-shadow: 0 1px 3px rgba(0,0,0,.2);
}
.jt-auto-toggle input:checked ~ .jt-switch { background: var(--jt-brand); }
.jt-auto-toggle input:checked ~ .jt-switch::after { transform: translateX(14px); }

/* ── Status bar ──────────────────────────────────────────────────── */
.jt-status {
  padding: 10px 16px;
  border-radius: var(--jt-radius-sm);
  font-size: 13.5px;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
  transition: var(--jt-transition);
  min-height: 42px;
  border: 1.5px solid transparent;
}
.jt-status.jt-hidden { opacity: 0; pointer-events: none; }
.jt-status.jt-valid {
  background: var(--jt-valid-bg);
  color: var(--jt-valid-text);
  border-color: var(--jt-valid-border);
}
.jt-status.jt-invalid {
  background: var(--jt-error-bg);
  color: var(--jt-error-text);
  border-color: var(--jt-error-border);
}
.jt-status.jt-idle {
  background: var(--jt-surface-2);
  color: var(--jt-text-3);
  border-color: var(--jt-border);
}
.jt-status svg { width: 16px; height: 16px; flex-shrink: 0; }
.jt-status-msg { flex: 1; }
.jt-status-meta { font-size: 12px; opacity: .7; margin-left: auto; }

/* ── Split panel layout ──────────────────────────────────────────── */
.jt-panels {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  align-items: start;
}

.jt-panel {
  background: var(--jt-surface);
  border: 1.5px solid var(--jt-border);
  border-radius: var(--jt-radius);
  box-shadow: var(--jt-shadow);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: border-color .2s;
}
.jt-panel:focus-within { border-color: var(--jt-border-focus); box-shadow: var(--jt-shadow), var(--jt-shadow-focus); }

.jt-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  border-bottom: 1px solid var(--jt-border);
  background: var(--jt-surface-2);
  gap: 8px;
}
.jt-panel-title {
  font-size: 12.5px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--jt-text-3);
  display: flex;
  align-items: center;
  gap: 6px;
}
.jt-panel-title svg { width: 14px; height: 14px; color: var(--jt-brand); }
.jt-panel-actions { display: flex; gap: 6px; }
.jt-panel-btn {
  background: transparent;
  border: 1px solid var(--jt-border);
  color: var(--jt-text-3);
  width: 28px;
  height: 28px;
  border-radius: 6px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--jt-transition);
}
.jt-panel-btn svg { width: 14px; height: 14px; }
.jt-panel-btn:hover { border-color: var(--jt-brand); color: var(--jt-brand); background: var(--jt-brand-light); }
.jt-dark .jt-panel-btn:hover { background: rgba(16,183,127,.1); }

/* ── Textarea (input) ────────────────────────────────────────────── */
.jt-textarea {
  width: 100%;
  min-height: 420px;
  padding: 16px;
  font-family: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
  font-size: 13px;
  line-height: 1.7;
  border: none;
  outline: none;
  resize: vertical;
  background: var(--jt-surface);
  color: var(--jt-text);
  caret-color: var(--jt-brand);
  transition: background .25s, color .25s;
  tab-size: 2;
}
.jt-textarea::placeholder { color: var(--jt-text-3); opacity: .7; }

/* ── Output area (right panel) ───────────────────────────────────── */
.jt-output-wrap {
  min-height: 420px;
  overflow: auto;
  position: relative;
}

/* Tab switcher: Tree / Raw */
.jt-view-tabs {
  display: flex;
  gap: 2px;
  padding: 0;
}
.jt-view-tab {
  flex: 1;
  padding: 6px 12px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  background: transparent;
  color: var(--jt-text-3);
  border-radius: 5px;
  transition: var(--jt-transition);
  letter-spacing: .03em;
}
.jt-view-tab.jt-active {
  background: var(--jt-brand);
  color: #fff;
}
.jt-view-tab:not(.jt-active):hover { background: var(--jt-surface-2); color: var(--jt-text); }

/* ── Highlighted (raw) output ────────────────────────────────────── */
.jt-highlighted {
  padding: 16px;
  font-family: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
  font-size: 13px;
  line-height: 1.7;
  white-space: pre;
  word-break: break-all;
  overflow-wrap: break-word;
  color: var(--jt-text);
}
.jt-highlighted .jt-key   { color: var(--jt-syn-key);  }
.jt-highlighted .jt-str   { color: var(--jt-syn-str);  }
.jt-highlighted .jt-num   { color: var(--jt-syn-num);  }
.jt-highlighted .jt-bool  { color: var(--jt-syn-bool); }
.jt-highlighted .jt-null  { color: var(--jt-syn-null); font-style: italic; }
.jt-highlighted .jt-brace { color: var(--jt-syn-brace); font-weight: 600; }

/* ── Tree view ───────────────────────────────────────────────────── */
.jt-tree {
  padding: 12px 16px;
  font-family: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
  font-size: 13px;
  line-height: 1.7;
}
.jt-tree ul { list-style: none; padding-left: 20px; border-left: 1px dashed var(--jt-border); margin-left: 4px; }
.jt-tree li { position: relative; }
.jt-node-toggle {
  cursor: pointer;
  user-select: none;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  border: none;
  background: transparent;
  color: var(--jt-syn-brace);
  font-size: 13px;
  font-family: inherit;
  padding: 0;
  font-weight: 600;
}
.jt-node-toggle:hover { color: var(--jt-brand); }
.jt-node-arrow {
  display: inline-block;
  transition: transform .15s;
  font-size: 10px;
  width: 12px;
  color: var(--jt-text-3);
}
.jt-node-toggle.jt-collapsed .jt-node-arrow { transform: rotate(-90deg); }
.jt-node-key { color: var(--jt-syn-key); }
.jt-node-str { color: var(--jt-syn-str); }
.jt-node-num { color: var(--jt-syn-num); }
.jt-node-bool { color: var(--jt-syn-bool); }
.jt-node-null { color: var(--jt-syn-null); font-style: italic; }
.jt-node-colon { color: var(--jt-text-3); margin: 0 4px; }
.jt-node-count { color: var(--jt-text-3); font-size: 11px; font-style: italic; }
.jt-node-children.jt-collapsed { display: none; }

/* Placeholder empty state */
.jt-empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 300px;
  color: var(--jt-text-3);
  gap: 12px;
  text-align: center;
  padding: 32px;
}
.jt-empty-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: var(--jt-surface-2);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1.5px dashed var(--jt-border);
}
.jt-empty-icon svg { width: 26px; height: 26px; opacity: .4; }
.jt-empty-state p { font-size: 13.5px; max-width: 200px; line-height: 1.5; }

/* Copy feedback */
.jt-copy-flash {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--jt-brand);
  color: #fff;
  padding: 10px 18px;
  border-radius: var(--jt-radius-sm);
  font-size: 13.5px;
  font-weight: 600;
  box-shadow: 0 4px 16px rgba(16,183,127,.35);
  z-index: 9999;
  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
  transition: opacity .2s, transform .2s;
}
.jt-copy-flash.jt-visible { opacity: 1; transform: translateY(0); }

/* ── SEO content section ─────────────────────────────────────────── */
.jt-seo {
  margin-top: 56px;
  padding: 0 8px;
}
.jt-seo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
  margin-bottom: 40px;
}
.jt-seo-card {
  background: var(--jt-surface);
  border: 1.5px solid var(--jt-border);
  border-radius: var(--jt-radius);
  padding: 24px;
  box-shadow: var(--jt-shadow);
}
.jt-seo-card h2 {
  font-size: 16px;
  font-weight: 700;
  color: var(--jt-text);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.jt-seo-card h2 span {
  width: 28px;
  height: 28px;
  border-radius: 7px;
  background: var(--jt-brand-light);
  color: var(--jt-brand);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 15px;
}
.jt-dark .jt-seo-card h2 span { background: rgba(16,183,127,.12); }
.jt-seo-card p { font-size: 14px; color: var(--jt-text-2); line-height: 1.7; }

/* FAQ */
.jt-faqs { margin-top: 0; }
.jt-faqs h2 {
  font-size: 20px;
  font-weight: 800;
  color: var(--jt-text);
  margin-bottom: 20px;
  letter-spacing: -.02em;
}
.jt-faq-item {
  border: 1.5px solid var(--jt-border);
  border-radius: var(--jt-radius-sm);
  margin-bottom: 10px;
  background: var(--jt-surface);
  overflow: hidden;
  transition: border-color .18s;
}
.jt-faq-item:hover { border-color: var(--jt-brand); }
.jt-faq-q {
  width: 100%;
  text-align: left;
  padding: 14px 18px;
  background: transparent;
  border: none;
  cursor: pointer;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--jt-text);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}
.jt-faq-q svg { width: 16px; height: 16px; flex-shrink: 0; color: var(--jt-brand); transition: transform .2s; }
.jt-faq-item.jt-open .jt-faq-q svg { transform: rotate(45deg); }
.jt-faq-a {
  padding: 0 18px;
  max-height: 0;
  overflow: hidden;
  font-size: 14px;
  color: var(--jt-text-2);
  line-height: 1.7;
  transition: max-height .3s ease, padding .3s ease;
}
.jt-faq-item.jt-open .jt-faq-a { max-height: 300px; padding: 0 18px 16px; }

/* ── Responsive ──────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .jt-panels {
    grid-template-columns: 1fr;
  }
  .jt-toolbar {
    flex-direction: column;
    align-items: stretch;
  }
  .jt-toolbar-left, .jt-toolbar-right {
    width: 100%;
    justify-content: stretch;
  }
  .jt-toolbar-left .jt-btn,
  .jt-toolbar-right .jt-btn,
  .jt-auto-toggle {
    flex: 1;
    justify-content: center;
  }
  .jt-textarea { min-height: 260px; }
  .jt-output-wrap { min-height: 260px; }
  .jt-hero { padding: 32px 16px 28px; }
  .jt-hero-controls { top: 12px; right: 12px; }
}

@media (max-width: 480px) {
  .jt-seo-grid { grid-template-columns: 1fr; }
  .jt-btn { font-size: 13px; padding: 8px 12px; }
}