style.css

:root {
  --bg: #0d0e14;
  --surface: #161821;
  --surface2: #1e2030;
  --border: #2a2d42;
  --accent: #ff7300;
  --accent-hover: #e56500;
  --success: #3ecf8e;
  --warning: #f59e0b;
  --danger: #ef4444;
  --danger-bg: #1e1010;
  --danger-border: #3d1515;
  --danger-bg-hover: #2a1313;
  --text: #e2e8f0;
  --muted: #8892b0;
  --mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', Consolas, monospace;
  --radius: 8px;
}

[data-theme="light"] {
  --bg: #f4f5f7;
  --surface: #ffffff;
  --surface2: #eef0f4;
  --border: #d0d4de;
  --accent: #ff7300;
  --accent-hover: #e56500;
  --success: #0d9e6a;
  --warning: #c97b00;
  --danger: #d93030;
  --danger-bg: #fde8e8;
  --danger-border: #f5b8b8;
  --danger-bg-hover: #fad4d4;
  --text: #1a1d2e;
  --muted: #5c6280;
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 16px 24px;
  display: flex;
  align-items: center;
  gap: 12px;
}

header h1 {
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: 0.01em;
}

header .badge {
  font-size: 0.7rem;
  background: var(--accent);
  color: #fff;
  padding: 2px 8px;
  border-radius: 99px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

header .spacer { flex: 1; }

#theme-toggle {
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 99px;
  padding: 5px 14px;
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: background 0.15s, border-color 0.15s;
}

#theme-toggle:hover { background: var(--border); }

.main {
  display: flex;
  flex: 1;
  overflow: hidden;
}

/* ── Sidebar tabs ── */
nav {
  width: 200px;
  flex-shrink: 0;
  background: var(--surface);
  border-right: 1px solid var(--border);
  padding: 6px 0;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}

.nav-category { display: flex; flex-direction: column; }

.cat-header {
  background: var(--bg);
  border: none;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  text-align: left;
  padding: 10px 14px 8px;
  cursor: pointer;
  width: 100%;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: color 0.15s, background 0.15s;
}

.nav-category:first-child .cat-header { border-top: none; }

.cat-header:hover { color: var(--text); background: var(--surface); }

.cat-arrow {
  margin-left: auto;
  display: inline-block;
  transition: transform 0.2s ease;
  font-style: normal;
}

.nav-category:not(.open) .cat-arrow { transform: rotate(-90deg); }

.cat-items {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  max-height: 0;
  transition: max-height 0.25s ease;
}

.nav-category.open .cat-items { max-height: 600px; }

.material-symbols-outlined {
  font-variation-settings: 'FILL' 0, 'wght' 300, 'GRAD' 0, 'opsz' 20;
  user-select: none;
}

.cat-icon {
  font-size: 15px;
  line-height: 1;
  flex-shrink: 0;
}

nav button[data-tab] {
  background: none;
  border: none;
  border-left: 3px solid transparent;
  color: var(--text);
  font-size: 0.82rem;
  font-weight: 500;
  text-align: left;
  padding: 7px 14px 7px 20px;
  cursor: pointer;
  width: 100%;
  transition: background 0.15s, color 0.15s;
}

nav button[data-tab]:hover {
  background: var(--surface2);
  color: var(--accent);
}

nav button[data-tab].active {
  background: var(--surface2);
  color: var(--accent);
  border-left-color: var(--accent);
  font-weight: 600;
}

/* ── Content ── */
.content {
  flex: 1;
  overflow-y: auto;
  padding: 28px;
}

.tab-panel { display: none; }
.tab-panel.active { display: block; }

.panel-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 20px;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 8px;
}

.panel-title .icon {
  width: 28px;
  height: 28px;
  background: var(--accent);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
}

/* ── IO layout ── */
.io-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

@media (max-width: 760px) {
  nav { width: 140px; }
  .io-grid { grid-template-columns: 1fr; }
}

.io-box label {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--muted);
  margin-bottom: 6px;
}

textarea {
  width: 100%;
  height: 220px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-family: var(--mono);
  font-size: 0.82rem;
  padding: 12px;
  resize: vertical;
  outline: none;
  transition: border-color 0.15s;
  line-height: 1.6;
}

textarea:focus { border-color: var(--accent); }
textarea.error { border-color: var(--danger); }
textarea::placeholder { color: var(--muted); opacity: 0.6; }

/* ── Buttons ── */
.btn-row {
  display: flex;
  gap: 8px;
  margin-top: 16px;
  flex-wrap: wrap;
  align-items: center;
}

button.btn {
  padding: 8px 16px;
  border: none;
  border-radius: var(--radius);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s, transform 0.1s;
  display: flex;
  align-items: center;
  gap: 6px;
}

button.btn:active { transform: scale(0.97); }

button.btn-primary { background: var(--accent); color: #fff; }
button.btn-primary:hover { background: var(--accent-hover); }

button.btn-secondary { background: var(--surface2); color: var(--text); border: 1px solid var(--border); }
button.btn-secondary:hover { background: var(--border); }

button.btn-success { background: var(--success); color: #061a0e; }

button.btn-danger { background: var(--danger-bg); color: var(--danger); border: 1px solid var(--danger-border); }
button.btn-danger:hover { background: var(--danger-bg-hover); }

.btn-row .spacer { flex: 1; }

/* ── Error message ── */
.err-msg {
  font-size: 0.78rem;
  color: var(--danger);
  margin-top: 6px;
  min-height: 18px;
}

/* ── JWT specific ── */
.jwt-panels {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 14px;
  margin-top: 20px;
}

@media (max-width: 900px) {
  .jwt-panels { grid-template-columns: 1fr; }
}

.jwt-part {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.jwt-part-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
}

.jwt-part-header.hdr { color: #f472b6; }
.jwt-part-header.pld { color: #34d399; }
.jwt-part-header.sig { color: #fbbf24; }

.jwt-part pre {
  padding: 12px;
  font-family: var(--mono);
  font-size: 0.78rem;
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-all;
  color: var(--text);
  min-height: 80px;
}

.jwt-status {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: var(--radius);
  font-size: 0.8rem;
  font-weight: 600;
  margin-top: 14px;
  border: 1px solid transparent;
}

.jwt-status.valid   { background: #0d2b1e; border-color: #1a4a32; color: var(--success); }
.jwt-status.expired { background: #2b1212; border-color: #4a2020; color: var(--danger); }
.jwt-status.no-exp  { background: var(--surface2); border-color: var(--border); color: var(--muted); }

/* ── Toast ── */
#toast {
  position: fixed;
  bottom: 28px;
  right: 28px;
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 10px 18px;
  border-radius: var(--radius);
  font-size: 0.82rem;
  font-weight: 500;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.2s, transform 0.2s;
  pointer-events: none;
  z-index: 999;
}

#toast.show {
  opacity: 1;
  transform: translateY(0);
}

/* ── Text input (timestamp) ── */
input.text-input {
  flex: 1;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-family: var(--mono);
  font-size: 0.82rem;
  padding: 10px 12px;
  outline: none;
  transition: border-color 0.15s;
  min-width: 0;
}
input.text-input:focus { border-color: var(--accent); }
input.text-input.error { border-color: var(--danger); }
input.text-input::placeholder { color: var(--muted); opacity: 0.6; }

/* ── Hash results ── */
.hash-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.hash-algo {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  width: 68px;
  flex-shrink: 0;
}
.hash-value {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--text);
  flex: 1;
  word-break: break-all;
}

/* ── Timestamp results ── */
.ts-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.ts-label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  width: 110px;
  flex-shrink: 0;
}
.ts-value {
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--text);
  flex: 1;
}

/* ── Diff viewer ── */
.diff-stats {
  font-size: 0.78rem;
  font-weight: 600;
  margin-bottom: 8px;
}
.diff-stat-add { color: var(--success); }
.diff-stat-del { color: var(--danger); }

.diff-pre {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px;
  font-family: var(--mono);
  font-size: 0.8rem;
  line-height: 1.6;
  overflow-x: auto;
  white-space: pre;
}
.diff-pre .diff-add { display: block; color: var(--success); background: rgba(62,207,142,0.08); }
.diff-pre .diff-del { display: block; color: var(--danger);  background: rgba(239,68,68,0.08); }
.diff-pre .diff-eq  { display: block; color: var(--muted); }

/* ── Password Generator ── */
.pwgen-controls { margin-bottom: 16px; }
.pwgen-length-row { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.pwgen-label { font-size: 0.72rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); flex-shrink: 0; }
input[type="range"] { flex: 1; accent-color: var(--accent); cursor: pointer; }
.pwgen-len-val { font-family: var(--mono); font-size: 0.85rem; color: var(--text); width: 32px; text-align: right; }
.pwgen-checkboxes { display: flex; flex-wrap: wrap; gap: 10px 20px; }
.pwgen-check { display: flex; align-items: center; gap: 6px; font-size: 0.82rem; cursor: pointer; }
.pwgen-check input[type="checkbox"] { accent-color: var(--accent); cursor: pointer; }
.pwgen-result-row { margin-top: 16px; }
.pwgen-strength { display: flex; align-items: center; gap: 10px; margin-top: 10px; }
.strength-bar-track { flex: 1; height: 6px; background: var(--surface2); border-radius: 3px; overflow: hidden; border: 1px solid var(--border); }
.strength-bar-fill { height: 100%; border-radius: 3px; transition: width 0.3s, background 0.3s; }
.str-weak   { background: var(--danger) !important; color: var(--danger) !important; }
.str-fair   { background: var(--warning) !important; color: var(--warning) !important; }
.str-good   { background: #4ade80 !important; color: #4ade80 !important; }
.str-strong { background: var(--success) !important; color: var(--success) !important; }
.strength-label { font-size: 0.72rem; font-weight: 700; width: 70px; }

/* ── Regex Tester ── */
.regex-pattern-row { display: flex; align-items: stretch; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.regex-slash { padding: 10px 12px; background: var(--surface2); color: var(--accent); font-family: var(--mono); font-size: 1rem; font-weight: 700; flex-shrink: 0; display: flex; align-items: center; }
.regex-flags { display: flex; gap: 10px; padding: 0 14px; background: var(--surface2); align-items: center; flex-shrink: 0; border-left: 1px solid var(--border); }
.regex-flags label { font-family: var(--mono); font-size: 0.82rem; color: var(--muted); cursor: pointer; display: flex; align-items: center; gap: 4px; }
.regex-flags input[type="checkbox"] { accent-color: var(--accent); cursor: pointer; }
.regex-stats { font-size: 0.78rem; font-weight: 600; color: var(--accent); margin-bottom: 8px; }
.regex-highlight { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 12px; font-family: var(--mono); font-size: 0.82rem; line-height: 1.8; min-height: 60px; max-height: 200px; overflow-y: auto; white-space: pre-wrap; word-break: break-all; color: var(--text); }
.regex-match { background: rgba(255,115,0,0.25); color: var(--accent); border-radius: 2px; padding: 0 2px; }
.regex-matches { display: flex; flex-direction: column; gap: 6px; }
.regex-match-item { display: flex; align-items: center; gap: 10px; padding: 6px 12px; background: var(--surface2); border: 1px solid var(--border); border-radius: var(--radius); font-size: 0.8rem; flex-wrap: wrap; }
.regex-match-num { background: var(--accent); color: #fff; border-radius: 50%; width: 18px; height: 18px; font-size: 0.65rem; display: flex; align-items: center; justify-content: center; font-weight: 700; flex-shrink: 0; }
.regex-match-val { font-family: var(--mono); background: rgba(255,115,0,0.1); padding: 1px 6px; border-radius: 4px; }
.regex-match-idx { color: var(--muted); font-size: 0.75rem; }
.regex-group { color: var(--muted); font-size: 0.75rem; }

/* ── UUID Generator ── */
.uuid-row { display: flex; align-items: center; gap: 12px; padding: 8px 14px; background: var(--surface2); border: 1px solid var(--border); border-radius: var(--radius); }
.uuid-value { font-family: var(--mono); font-size: 0.85rem; color: var(--text); flex: 1; }

/* ── HTTP Status Codes ── */
.http-category { margin-bottom: 18px; }
.http-cat-label { font-size: 0.68rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.1em; color: var(--muted); padding: 6px 0 6px; border-bottom: 1px solid var(--border); margin-bottom: 4px; }
.http-row { display: flex; align-items: flex-start; gap: 12px; padding: 7px 4px; border-bottom: 1px solid var(--border); font-size: 0.83rem; }
.http-row:last-child { border-bottom: none; }
.http-code { font-family: var(--mono); font-size: 0.78rem; font-weight: 700; padding: 2px 8px; border-radius: 4px; flex-shrink: 0; min-width: 44px; text-align: center; }
.http-1xx { background: rgba(100,150,255,0.12); color: #7eb8f7; }
.http-2xx { background: rgba(62,207,142,0.12); color: var(--success); }
.http-3xx { background: rgba(245,158,11,0.12); color: var(--warning); }
.http-4xx { background: rgba(239,68,68,0.12); color: var(--danger); }
.http-5xx { background: rgba(239,68,68,0.2); color: #ff6b6b; }
.http-name { font-weight: 600; flex-shrink: 0; min-width: 210px; }
.http-desc { color: var(--muted); font-size: 0.8rem; }

/* ── CORS Header Builder ── */
.cors-form { display: flex; flex-direction: column; gap: 14px; margin-bottom: 4px; }
.cors-field { display: flex; flex-direction: column; gap: 6px; }
.cors-label { font-size: 0.72rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); }
.cors-checkboxes { display: flex; flex-wrap: wrap; gap: 8px 16px; }
.cors-checkboxes label { font-size: 0.82rem; cursor: pointer; display: flex; align-items: center; gap: 5px; }
.cors-checkboxes input[type="checkbox"] { accent-color: var(--accent); cursor: pointer; }

footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 10px 24px;
  text-align: center;
  font-size: 0.78rem;
  color: var(--muted);
}

/* ── Image Editor ── */
.img-blurb {
  font-size: 0.82rem;
  color: var(--muted);
  line-height: 1.6;
  margin: -8px 0 16px;
  max-width: 720px;
}

.img-toolbar,
.img-actionbar,
.img-cropbar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  padding: 10px 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 12px;
}

.img-cropbar { margin-top: 12px; }

.img-tool-group {
  display: flex;
  gap: 4px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 3px;
}

.img-tool {
  background: transparent;
  border: none;
  color: var(--muted);
  font-family: inherit;
  font-size: 0.8rem;
  font-weight: 500;
  padding: 6px 12px;
  border-radius: 5px;
  cursor: pointer;
  transition: background 0.12s, color 0.12s;
  white-space: nowrap;
}
.img-tool:hover:not(:disabled) { color: var(--text); background: var(--border); }
.img-tool.active { background: var(--accent); color: #fff; }
.img-tool:disabled { opacity: 0.4; cursor: not-allowed; }

.img-opt-group,
.img-action-block {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.img-opt {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  color: var(--muted);
  font-weight: 500;
}
.img-opt input[type="range"] { width: 90px; }
.img-opt-val {
  font-family: var(--mono);
  color: var(--text);
  width: 24px;
  text-align: right;
  font-size: 0.78rem;
}

.img-opt input[type="color"] {
  width: 30px;
  height: 26px;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 5px;
  background: var(--surface2);
  cursor: pointer;
}
.img-opt input[type="color"]::-webkit-color-swatch-wrapper { padding: 2px; }
.img-opt input[type="color"]::-webkit-color-swatch { border: none; border-radius: 3px; }

.img-lock input[type="checkbox"] { accent-color: var(--accent); cursor: pointer; }

.img-dim { width: 84px; }

.img-select {
  background: var(--surface2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 5px 8px;
  font-size: 0.8rem;
  cursor: pointer;
}

.img-size {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--muted);
  min-width: 60px;
}

/* Stage */
.img-stage {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background:
    linear-gradient(45deg, var(--surface2) 25%, transparent 25%),
    linear-gradient(-45deg, var(--surface2) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, var(--surface2) 75%),
    linear-gradient(-45deg, transparent 75%, var(--surface2) 75%);
  background-size: 20px 20px;
  background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
  background-color: var(--surface);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 320px;
  max-height: 68vh;
  overflow: auto;
  padding: 16px;
}

.img-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  color: var(--muted);
  text-align: center;
  padding: 40px 20px;
}
.img-placeholder.dragover { color: var(--accent); }
.img-drop-icon { font-size: 46px; opacity: 0.7; }
.img-drop-title { font-size: 0.9rem; }
.img-drop-hint { font-size: 0.76rem; opacity: 0.7; }

#img-canvas {
  max-width: 100%;
  height: auto;
  display: block;
  box-shadow: 0 2px 14px rgba(0,0,0,0.35);
  touch-action: none;
  cursor: crosshair;
}

.img-crop-note { font-size: 0.8rem; color: var(--muted); margin-right: auto; }

@media (max-width: 760px) {
  .img-opt input[type="range"] { width: 64px; }
}

/* ══════════════════════════════════════════════
   Chart Designer
   ══════════════════════════════════════════════ */

.section-label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--muted);
  margin-bottom: 8px;
  margin-top: 20px;
}
.section-label:first-of-type { margin-top: 0; }

.config-checkboxes {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  padding-top: 4px;
}
.config-checkboxes label {
  font-size: 0.82rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--text);
}
.config-checkboxes input[type="checkbox"] { accent-color: var(--accent); cursor: pointer; }

/* ── Chart Type Strip ── */
.chart-type-strip {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.chart-type-btn {
  flex: 1 1 0;
  min-width: 0;
  justify-content: center;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-size: 0.8rem;
  font-weight: 500;
  padding: 6px 8px;
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s, background 0.15s;
  display: flex;
  align-items: center;
  gap: 5px;
  white-space: nowrap;
}
.chart-type-btn:hover { border-color: var(--accent); color: var(--accent); }
.chart-type-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  font-weight: 600;
}

/* ── Data hint ── */
.data-hint {
  font-size: 0.75rem;
  color: var(--muted);
  margin-bottom: 8px;
  font-family: var(--mono);
  line-height: 1.5;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 8px 12px;
}
.data-hint strong { color: var(--accent); }

/* ── Collapsible data section ── */
.data-section {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-top: 14px;
  margin-bottom: 12px;
  overflow: hidden;
}
.data-section-hdr {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  background: none;
  border: none;
  border-bottom: 1px solid transparent;
  color: var(--text);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  padding: 10px 14px;
  cursor: pointer;
  text-align: left;
  transition: background 0.15s, border-color 0.15s;
}
.data-section.open .data-section-hdr { border-bottom-color: var(--border); }
.data-section-hdr:hover { background: var(--border); }

.data-section-hint {
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--accent);
  flex: 1;
}

.data-section-arrow {
  display: inline-block;
  transition: transform 0.2s ease;
  color: var(--muted);
  font-style: normal;
  flex-shrink: 0;
}
.data-section:not(.open) .data-section-arrow { transform: rotate(-90deg); }

.data-section-body {
  overflow: hidden;
  max-height: 0;
  transition: max-height 0.3s ease;
}
.data-section.open .data-section-body { max-height: 600px; }

.data-body-inner { padding: 12px 14px 14px; }
.data-section .ctrl-textarea { height: 180px; }

/* ── Compact control grid (inside left panel) ── */
.ctrl-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 10px;
  margin-top: 10px;
}
.ctrl-field { display: flex; flex-direction: column; gap: 3px; }
.ctrl-span2 { grid-column: span 2; }

.ctrl-label {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--muted);
  margin-bottom: 4px;
}
.ctrl-label-sm {
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
}

/* shared text/select input inside controls */
.cfg-text {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-family: inherit;
  font-size: 0.82rem;
  padding: 6px 9px;
  outline: none;
  transition: border-color 0.15s;
  width: 100%;
  cursor: auto;
}
.cfg-text:focus { border-color: var(--accent); }
.cfg-text::placeholder { color: var(--muted); opacity: 0.6; }
select.cfg-text { cursor: pointer; }

/* data textarea inside left panel */
.ctrl-textarea {
  width: 100%;
  height: 200px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-family: var(--mono);
  font-size: 0.8rem;
  padding: 10px 12px;
  resize: vertical;
  outline: none;
  transition: border-color 0.15s;
  line-height: 1.6;
}
.ctrl-textarea:focus  { border-color: var(--accent); }
.ctrl-textarea.error  { border-color: var(--danger); }
.ctrl-textarea::placeholder { color: var(--muted); opacity: 0.6; }

/* ── Segmented buttons ── */
.seg-btns {
  display: flex;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.seg-btn {
  flex: 1 1 0;
  background: var(--surface);
  border: none;
  border-right: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 5px 4px;
  cursor: pointer;
  transition: background 0.12s, color 0.12s;
  white-space: nowrap;
  text-align: center;
}
.seg-btn:last-child { border-right: none; }
.seg-btn:hover  { background: var(--surface2); color: var(--text); }
.seg-btn.active { background: var(--accent); color: #fff; }

/* ── Inline color picker ── */
input[type="color"].cfg-color {
  width: 36px;
  height: 28px;
  border: 1px solid var(--border);
  border-radius: 5px;
  cursor: pointer;
  padding: 2px;
  background: none;
}

/* ── Font size row ── */
.font-size-row {
  display: flex;
  align-items: center;
  gap: 6px;
}
.font-size-row input[type="range"] { flex: 1; accent-color: var(--accent); cursor: pointer; min-width: 50px; }
.font-size-val {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--text);
  width: 30px;
  flex-shrink: 0;
  text-align: right;
}

/* ── Palette preview (swatches + custom pickers) ── */
.palette-preview { margin-top: 7px; }
.palette-color-dots { display: flex; gap: 5px; flex-wrap: wrap; }
.palette-color-dot {
  width: 22px;
  height: 22px;
  border-radius: 4px;
  border: 1px solid rgba(128,128,128,0.2);
  flex-shrink: 0;
  cursor: default;
}
.palette-preview.is-custom {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 10px 12px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.custom-color-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}
.custom-color-item span {
  font-size: 0.65rem;
  color: var(--muted);
  font-weight: 600;
  text-transform: uppercase;
}

/* ── Split view ── */
.split-view {
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: 16px;
  margin-top: 16px;
  align-items: start;
}
@media (max-width: 900px) {
  .split-view { grid-template-columns: 1fr; }
}
.split-left  { display: flex; flex-direction: column; }
.split-right { display: flex; flex-direction: column; }

/* ── Chart placeholder ── */
.chart-placeholder {
  background: var(--surface2);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  color: var(--muted);
  font-size: 0.85rem;
  text-align: center;
  padding: 100px 20px;
  min-height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ── Fullscreen modal ── */
.chart-modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 1000;
  align-items: center;
  justify-content: center;
}
.chart-modal.active { display: flex; }

.chart-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.8);
}
.chart-modal-box {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  width: 88vw;
  max-height: 92vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 24px 64px rgba(0,0,0,0.5);
  overflow: hidden;
}
.chart-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  background: var(--surface2);
  flex-shrink: 0;
  gap: 12px;
}
.chart-modal-title { font-size: 0.9rem; font-weight: 600; color: var(--text); }
.chart-modal-body {
  flex: 1;
  overflow: auto;
  padding: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 0;
}
.chart-modal-body canvas { max-width: 100%; max-height: 78vh; }

/* ── Chart canvas wrapper ── */
.chart-canvas-wrap {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
}
.chart-canvas-wrap canvas { max-height: 420px; }