/* ========================================
   JSON Tools — jsontools.css
   Dark neon theme matching site palette
   ======================================== */

/* ---- Variables ---- */
:root {
  --jt-green:      #39ff14;
  --jt-cyan:       #00f0ff;
  --jt-amber:      #ffb74d;
  --jt-red:        #ff4d4d;
  --jt-bg:         #0a0e27;
  --jt-surface:    #0f1535;
  --jt-surface2:   #141a3c;
  --jt-border:     rgba(0, 240, 255, 0.15);
  --jt-muted:      #a8aabe;
  --jt-text:       #e0e0f0;
  --jt-radius:     8px;
  --jt-mono:       'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
  --jt-transition: 0.15s ease;
}

/* ---- Notice ---- */
.jt-notice {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  background: rgba(57, 255, 20, 0.06);
  border: 1px solid rgba(57, 255, 20, 0.25);
  border-radius: var(--jt-radius);
  padding: 0.875rem 1rem;
  margin-bottom: 1.75rem;
  font-size: 0.875rem;
  color: var(--jt-text);
  line-height: 1.5;
}
.jt-notice__icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  margin-top: 1px;
}
.jt-notice code {
  background: rgba(255,255,255,0.07);
  padding: 0 4px;
  border-radius: 3px;
  font-family: var(--jt-mono);
  font-size: 0.8rem;
}

/* ---- Toolbar ---- */
.jt-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1rem;
}
.jt-toolbar__left {
  display: flex;
  gap: 4px;
  background: var(--jt-surface);
  border: 1px solid var(--jt-border);
  border-radius: var(--jt-radius);
  padding: 4px;
}
.jt-tab-btn {
  appearance: none;
  background: transparent;
  border: none;
  color: var(--jt-muted);
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.4rem 1rem;
  border-radius: 5px;
  cursor: pointer;
  transition: background var(--jt-transition), color var(--jt-transition);
}
.jt-tab-btn:hover {
  color: var(--jt-text);
  background: rgba(255,255,255,0.06);
}
.jt-tab-btn--active {
  background: rgba(0, 240, 255, 0.12);
  color: var(--jt-cyan);
}
.jt-tab-btn--active:hover {
  background: rgba(0, 240, 255, 0.18);
}

.jt-toolbar__right {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.jt-indent-label {
  font-size: 0.8rem;
  color: var(--jt-muted);
}
.jt-indent-select {
  appearance: none;
  background: var(--jt-surface);
  border: 1px solid var(--jt-border);
  border-radius: 5px;
  color: var(--jt-text);
  font-size: 0.8rem;
  padding: 0.35rem 1.8rem 0.35rem 0.6rem;
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='%23a8aabe'%3E%3Cpath d='M7 7l3 3 3-3'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 6px center;
  background-size: 16px;
}
.jt-indent-select:focus {
  outline: none;
  border-color: var(--jt-cyan);
}

/* ---- Layout ---- */
.jt-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1rem;
}
@media (max-width: 768px) {
  .jt-layout {
    grid-template-columns: 1fr;
  }
}

/* ---- Panes ---- */
.jt-pane {
  display: flex;
  flex-direction: column;
  background: var(--jt-surface);
  border: 1px solid var(--jt-border);
  border-radius: var(--jt-radius);
  overflow: hidden;
}
.jt-pane__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 0.75rem;
  background: var(--jt-surface2);
  border-bottom: 1px solid var(--jt-border);
  flex-shrink: 0;
}
.jt-pane__label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--jt-muted);
}
.jt-pane__actions {
  display: flex;
  gap: 4px;
}
.jt-action-btn {
  appearance: none;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 4px;
  color: var(--jt-muted);
  font-size: 0.75rem;
  padding: 0.2rem 0.55rem;
  cursor: pointer;
  transition: background var(--jt-transition), color var(--jt-transition), border-color var(--jt-transition);
}
.jt-action-btn:hover {
  background: rgba(0, 240, 255, 0.1);
  border-color: rgba(0, 240, 255, 0.35);
  color: var(--jt-cyan);
}
.jt-action-btn--success {
  background: rgba(57, 255, 20, 0.1) !important;
  border-color: rgba(57, 255, 20, 0.4) !important;
  color: var(--jt-green) !important;
}

/* ---- Input textarea ---- */
.jt-textarea {
  flex: 1;
  resize: vertical;
  min-height: 320px;
  padding: 0.875rem;
  background: transparent;
  border: none;
  outline: none;
  color: var(--jt-text);
  font-family: var(--jt-mono);
  font-size: 0.8rem;
  line-height: 1.6;
  tab-size: 2;
  caret-color: var(--jt-cyan);
  width: 100%;
  box-sizing: border-box;
}
.jt-textarea::placeholder {
  color: rgba(168, 170, 190, 0.35);
}

/* ---- Status bar ---- */
.jt-status {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.875rem;
  border-top: 1px solid var(--jt-border);
  font-size: 0.75rem;
  background: var(--jt-surface2);
  min-height: 32px;
  flex-shrink: 0;
}
.jt-status__icon {
  font-size: 0.9rem;
  line-height: 1;
}
.jt-status__msg {
  color: var(--jt-muted);
}
.jt-status--idle   .jt-status__msg { color: var(--jt-muted); }
.jt-status--valid  .jt-status__msg { color: var(--jt-green); }
.jt-status--error  .jt-status__msg { color: var(--jt-red); }
.jt-status--error  { border-top-color: rgba(255, 77, 77, 0.3); background: rgba(255, 77, 77, 0.05); }
.jt-status--valid  { border-top-color: rgba(57, 255, 20, 0.2); }

/* ---- Output pre ---- */
.jt-output {
  flex: 1;
  margin: 0;
  padding: 0.875rem;
  overflow: auto;
  color: var(--jt-text);
  font-family: var(--jt-mono);
  font-size: 0.8rem;
  line-height: 1.6;
  white-space: pre;
  min-height: 320px;
  background: transparent;
  border: none;
}
.jt-output-footer {
  padding: 0.35rem 0.875rem;
  background: var(--jt-surface2);
  border-top: 1px solid var(--jt-border);
  flex-shrink: 0;
  min-height: 28px;
}
.jt-output-size {
  font-size: 0.7rem;
  color: var(--jt-muted);
  font-family: var(--jt-mono);
}

/* ---- Validation result panel ---- */
.jt-validate-result {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.jt-validate-result--valid .jt-vr-badge {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--jt-green);
}
.jt-vr-check {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(57, 255, 20, 0.12);
  border: 1.5px solid rgba(57, 255, 20, 0.4);
  font-size: 1rem;
  flex-shrink: 0;
}
.jt-vr-stats {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0;
  border: 1px solid var(--jt-border);
  border-radius: var(--jt-radius);
  overflow: hidden;
}
.jt-vr-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.55rem 0.875rem;
  border-bottom: 1px solid var(--jt-border);
}
.jt-vr-row:last-child {
  border-bottom: none;
}
.jt-vr-stats dt {
  font-size: 0.8rem;
  color: var(--jt-muted);
  font-weight: 400;
}
.jt-vr-stats dd {
  font-size: 0.8rem;
  color: var(--jt-cyan);
  font-family: var(--jt-mono);
  font-weight: 600;
  margin: 0;
}

/* ---- Syntax highlight classes ---- */
.jk  { color: #79b8ff; }           /* key */
.jv  { color: #9ecbff; }           /* string value */
.jn  { color: var(--jt-amber); }   /* number */
.jb  { color: var(--jt-cyan); }    /* boolean */
.jnu { color: var(--jt-red); }     /* null */
.jp  { color: var(--jt-muted); }   /* punctuation */

/* ---- Tree view ---- */
.jt-tree-section {
  margin-bottom: 2rem;
}
.jt-tree-toggle {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  appearance: none;
  background: transparent;
  border: 1px solid var(--jt-border);
  border-radius: var(--jt-radius);
  color: var(--jt-muted);
  font-size: 0.8rem;
  padding: 0.45rem 0.875rem;
  cursor: pointer;
  transition: color var(--jt-transition), border-color var(--jt-transition);
  margin-bottom: 0.5rem;
}
.jt-tree-toggle:hover,
.jt-tree-toggle[aria-expanded="true"] {
  color: var(--jt-cyan);
  border-color: rgba(0, 240, 255, 0.35);
}
.jt-tree-arrow {
  width: 14px;
  height: 14px;
  transition: transform var(--jt-transition);
}
.jt-tree-toggle[aria-expanded="true"] .jt-tree-arrow {
  transform: rotate(90deg);
}
.jt-tree-container {
  background: var(--jt-surface);
  border: 1px solid var(--jt-border);
  border-radius: var(--jt-radius);
  padding: 1rem;
  overflow: auto;
  max-height: 400px;
}
.jt-tree-container[hidden] { display: none; }
.jt-tree {
  font-family: var(--jt-mono);
  font-size: 0.8rem;
  line-height: 1.7;
  color: var(--jt-text);
}

/* Tree nodes */
.jt-node {
  list-style: none;
  padding: 0;
  margin: 0;
  padding-left: 1.4rem;
}
.jt-node > li {
  position: relative;
  padding-left: 0.1rem;
}
.jt-node > li::before {
  content: '';
  position: absolute;
  left: -1rem;
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--jt-border);
}
.jt-node-key {
  color: #79b8ff;
}
.jt-node-key::after {
  content: ': ';
  color: var(--jt-muted);
}
.jt-node-str  { color: #9ecbff; }
.jt-node-num  { color: var(--jt-amber); }
.jt-node-bool { color: var(--jt-cyan); }
.jt-node-null { color: var(--jt-red); }
.jt-node-collapse {
  cursor: pointer;
  user-select: none;
  color: var(--jt-muted);
  background: var(--jt-surface2);
  border: 1px solid var(--jt-border);
  border-radius: 3px;
  padding: 0 4px;
  font-size: 0.75rem;
  margin: 0 2px;
  transition: color var(--jt-transition);
}
.jt-node-collapse:hover {
  color: var(--jt-cyan);
  border-color: rgba(0, 240, 255, 0.35);
}

/* ---- FAQ ---- */
.faq-section {
  margin-top: 3rem;
}
.faq-title {
  font-size: 1.4rem;
  color: var(--jt-cyan);
  margin-bottom: 1.25rem;
}
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.faq-item {
  background: var(--jt-surface);
  border: 1px solid var(--jt-border);
  border-radius: var(--jt-radius);
  padding: 1.25rem 1.5rem;
}
.faq-question {
  font-size: 1rem;
  font-weight: 600;
  color: var(--jt-text);
  margin: 0 0 0.5rem;
}
.faq-answer {
  font-size: 0.9rem;
  color: var(--jt-muted);
  margin: 0;
  line-height: 1.65;
}
.faq-answer a {
  color: var(--jt-cyan);
}
.faq-answer a:hover {
  text-decoration: underline;
}
.faq-answer code {
  background: rgba(255,255,255,0.07);
  padding: 0 4px;
  border-radius: 3px;
  font-family: var(--jt-mono);
  font-size: 0.8rem;
}