/* ═══════════════════════════════════════════════════════════
   TOOLKIT — pages/tool.css
   Tool Page Layout · Footer · All Tool-Specific Styles
   ═══════════════════════════════════════════════════════════ */

/* ── Tool Page Layout ─────────────────────────────────────── */
.tool-page-main { padding-top: calc(var(--nav-h) + 1rem); }
.tool-page-main .section:first-of-type { padding-top: 2.5rem; }

.section {
  padding: 6rem 0;
  position: relative;
  z-index: 1;
}

.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-tag {
  display: inline-block;
  padding: 0.3rem 0.9rem;
  background: var(--purple-dim);
  border: 1px solid rgba(124,58,237,0.3);
  border-radius: 50px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #a78bfa;
  margin-bottom: 0.9rem;
}

.section-title {
  font-size: clamp(1.7rem, 3.5vw, 2.4rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 0.65rem;
  color: var(--text-primary);
}

.section-desc {
  font-size: 0.97rem;
  color: var(--text-secondary);
  max-width: 480px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ── Breadcrumb ───────────────────────────────────────────── */
.tool-breadcrumb {
  display: flex;
  align-items: center;
  gap: .45rem;
  padding: .5rem 0 0;
  font-size: .82rem;
  color: var(--text-muted);
  margin-bottom: -1rem;
}

.tool-breadcrumb a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--transition);
  display: inline-flex;
  align-items: center;
  gap: .3rem;
}

.tool-breadcrumb a:hover { color: var(--cyan); }
.tool-breadcrumb-sep { opacity: .35; }

/* ── License Page ────────────────────────────────────────── */
.license-card { max-width: 880px; margin: 0 auto; }

.license-summary {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-between;
}

.license-summary h2,
.license-card h3 { color: var(--text-primary); }

.license-summary h2 { font-size: 1.08rem; }

.license-summary p,
.license-note,
.license-data-note {
  color: var(--text-secondary);
  line-height: 1.65;
}

.license-summary p { margin-top: 0.2rem; }
.license-note { margin-top: 1.25rem; }
.license-data-note {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-top: 0.85rem;
  padding: 0.7rem 0.8rem;
}
.license-data-note strong { color: var(--text-primary); }
.license-card h3 { font-size: 0.9rem; margin: 1.5rem 0 0.7rem; }

.license-text {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-code);
  font: 0.76rem/1.6 var(--font-mono);
  margin: 0;
  max-height: 38rem;
  overflow: auto;
  padding: 1rem;
  white-space: pre-wrap;
}

@media (max-width: 480px) {
  .license-summary { align-items: flex-start; flex-direction: column; }
  .license-text { font-size: 0.7rem; padding: 0.8rem; }
}

/* ── Gradient Text ────────────────────────────────────────── */
.gradient-text {
  background: linear-gradient(135deg, var(--cyan) 0%, #a78bfa 50%, var(--purple) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  background-size: 200% 200%;
  animation: gradientShift 6s ease infinite;
}

@keyframes gradientShift {
  0%   { background-position: 0% 50%; }
  50%  { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* ── Password Section ─────────────────────────────────────── */
.pwd-output-wrap {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 1.2rem;
  background: rgba(0,0,0,0.4);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 1rem;
  min-height: 58px;
}

.pwd-output {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--cyan);
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  letter-spacing: 0.04em;
}

.strength-wrap {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.6rem;
}

.strength-bars {
  display: flex;
  gap: 5px;
  flex: 1;
}

.strength-bar {
  flex: 1;
  height: 5px;
  border-radius: 5px;
  background: rgba(255,255,255,0.08);
  transition: background 0.4s ease;
}

.strength-bar.active-0 { background: var(--red); }
.strength-bar.active-1 { background: var(--yellow); }
.strength-bar.active-2 { background: #f59e0b; }
.strength-bar.active-3 { background: var(--green); }

.strength-label {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  min-width: 70px;
  text-align: right;
  color: var(--text-muted);
  transition: color 0.4s ease;
}

.strength-label.s-weak    { color: var(--red); }
.strength-label.s-fair    { color: var(--yellow); }
.strength-label.s-good    { color: #f59e0b; }
.strength-label.s-strong  { color: var(--green); }

/* ── Hash Section ─────────────────────────────────────────── */
.hash-results {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  margin-top: 1.6rem;
}

.hash-card {
  background: rgba(0,0,0,0.35);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 0.9rem 1.1rem;
  transition: border-color var(--transition);
  animation: fadeSlideUp 0.35s ease forwards;
}

.hash-card:hover { border-color: rgba(0,212,255,0.2); }

.hash-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.55rem;
}

.hash-algo {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--cyan);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.hash-algo-badge {
  padding: 0.15rem 0.5rem;
  background: var(--cyan-dim);
  border: 1px solid rgba(0,212,255,0.2);
  border-radius: 4px;
}

.hash-legacy-note {
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--yellow);
  letter-spacing: 0;
  text-transform: none;
  background: rgba(245,197,66,0.1);
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  border: 1px solid rgba(245,197,66,0.2);
}

.hash-value {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-code);
  word-break: break-all;
  line-height: 1.7;
  user-select: all;
}

/* ── Base64 Section ───────────────────────────────────────── */
.b64-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.6rem;
  align-items: start;
}

.b64-col {
  display: flex;
  flex-direction: column;
}

.b64-actions {
  display: flex;
  gap: 0.75rem;
  margin-top: 0.85rem;
}

.b64-output-header {
  display: flex;
  min-height: 36px;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.65rem;
}

.b64-output-header .control-label { margin-bottom: 0; }

.verify-result--success {
  color: var(--green);
  font-weight: 600;
}

.verify-result--error {
  color: var(--red);
  font-weight: 600;
}

/* ── UUID Section ─────────────────────────────────────────── */
.uuid-btn-row {
  display: flex;
  gap: 0.85rem;
  margin-top: 1.2rem;
  flex-wrap: wrap;
}

.uuid-list {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  list-style: none;
  max-height: 440px;
  overflow-y: auto;
  padding-right: 0.25rem;
}

.uuid-list::-webkit-scrollbar { width: 4px; }
.uuid-list::-webkit-scrollbar-track { background: rgba(255,255,255,0.03); border-radius: 4px; }
.uuid-list::-webkit-scrollbar-thumb { background: rgba(0,212,255,0.25); border-radius: 4px; }

.uuid-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.7rem 1rem;
  background: rgba(0,0,0,0.3);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition), background var(--transition);
  animation: fadeSlideUp 0.25s ease forwards;
}

.uuid-item:hover {
  background: rgba(0,212,255,0.03);
  border-color: rgba(0,212,255,0.2);
}

.uuid-value {
  font-family: var(--font-mono);
  font-size: 0.87rem;
  color: var(--cyan);
  letter-spacing: 0.03em;
  user-select: all;
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.uuid-index {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  min-width: 20px;
  flex-shrink: 0;
}

/* ── JWT Decoder ──────────────────────────────────────────── */
#jwtResults { margin-top: 1.4rem; }

.jwt-panel {
  background: rgba(0,0,0,0.3);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 0.85rem;
  overflow: hidden;
  animation: fadeSlideUp 0.3s ease;
}

.jwt-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.6rem 1rem;
  background: rgba(255,255,255,0.03);
  border-bottom: 1px solid var(--border);
}

.jwt-part-label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.jwt-part-label--header  { color: var(--cyan); }
.jwt-part-label--payload { color: #a78bfa; }
.jwt-part-label--sig     { color: var(--text-muted); }

.jwt-body {
  padding: 0.9rem 1rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-code);
  word-break: break-all;
  white-space: pre-wrap;
  line-height: 1.65;
}

.jwt-info-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 1rem;
}

.jwt-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.75rem;
  border-radius: 20px;
  font-size: 0.78rem;
  font-weight: 500;
}

.jwt-badge--ok {
  background: rgba(16,217,126,0.1);
  border: 1px solid rgba(16,217,126,0.3);
  color: var(--green);
}

.jwt-badge--expired {
  background: rgba(255,77,106,0.1);
  border: 1px solid rgba(255,77,106,0.3);
  color: var(--red);
}

.jwt-badge--info {
  background: var(--cyan-dim);
  border: 1px solid rgba(0,212,255,0.2);
  color: var(--cyan);
}

/* ── Regex Tester ─────────────────────────────────────────── */
.regex-pattern-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(0,0,0,0.35);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 0.4rem 0.75rem;
  transition: border-color var(--transition);
}

.regex-pattern-row:focus-within {
  border-color: rgba(0,212,255,0.4);
  box-shadow: 0 0 0 3px rgba(0,212,255,0.1);
}

.regex-slash {
  font-family: var(--font-mono);
  font-size: 1.15rem;
  color: var(--text-muted);
  flex-shrink: 0;
}

.regex-input {
  flex: 1;
  background: transparent;
  border: none;
  padding: 0.35rem 0.3rem;
  font-family: var(--font-mono);
  font-size: 0.92rem;
  color: var(--cyan);
  outline: none;
  min-width: 0;
}

.regex-flags {
  width: 72px;
  flex-shrink: 0;
  background: transparent;
  border: none;
  padding: 0.35rem 0.3rem;
  font-family: var(--font-mono);
  font-size: 0.92rem;
  color: var(--yellow);
  outline: none;
}

.regex-test-wrap { position: relative; margin-top: 0; }
.regex-test-wrap .textarea { position: relative; z-index: 2; background: transparent; }

.regex-highlight {
  position: absolute;
  inset: 0;
  padding: 0.9rem 1.1rem;
  font-family: var(--font-mono);
  font-size: 0.87rem;
  line-height: 1.65;
  white-space: pre-wrap;
  word-break: break-all;
  pointer-events: none;
  z-index: 1;
  border-radius: var(--radius-md);
  color: transparent;
  overflow: hidden;
}

.regex-match {
  background: rgba(245,197,66,0.3);
  border-radius: 3px;
  color: transparent;
}

.regex-stats {
  margin-top: 0.85rem;
  font-size: 0.82rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 1rem;
}

.match-count-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 0.2rem 0.65rem;
  background: rgba(245,197,66,0.12);
  border: 1px solid rgba(245,197,66,0.3);
  border-radius: 20px;
  color: var(--yellow);
  font-size: 0.78rem;
  font-weight: 600;
}

.group-card {
  display: inline-flex;
  flex-direction: column;
  padding: 0.4rem 0.75rem;
  background: rgba(0,212,255,0.06);
  border: 1px solid rgba(0,212,255,0.15);
  border-radius: var(--radius-sm);
  margin: 0.25rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
}

.group-label { font-size: 0.68rem; color: var(--text-muted); margin-bottom: 2px; }
.group-value { color: var(--cyan); }

/* ── Timestamp Converter ──────────────────────────────────── */
.ts-now-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.7rem 1rem;
  background: rgba(0,212,255,0.04);
  border: 1px solid rgba(0,212,255,0.12);
  border-radius: var(--radius-md);
  margin-bottom: 1.6rem;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.ts-live {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--cyan);
}

.ts-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 1.5rem;
  align-items: start;
}

.ts-divider {
  width: 1px;
  background: linear-gradient(to bottom, transparent, var(--border), transparent);
  align-self: stretch;
  margin-top: 2.5rem;
}

.ts-panel-title {
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.ts-unit-toggle {
  display: flex;
  gap: 2px;
  background: rgba(0,0,0,0.3);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 3px;
  flex-shrink: 0;
}

.unit-btn {
  padding: 0.3rem 0.6rem;
  background: transparent;
  border: none;
  border-radius: 5px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
}

.unit-btn.active { background: var(--cyan-dim); color: var(--cyan); }

.ts-result {
  margin-top: 0.9rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.ts-result-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.55rem 0.85rem;
  background: rgba(0,0,0,0.25);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  gap: 0.5rem;
}

.ts-result-label {
  font-size: 0.73rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  flex-shrink: 0;
}

.ts-result-val {
  font-family: var(--font-mono);
  font-size: 0.83rem;
  color: var(--text-code);
  text-align: right;
  flex: 1;
}

/* ── Case Converter ───────────────────────────────────────── */
.case-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 0.7rem;
  margin-top: 1.2rem;
}

.case-card {
  background: rgba(0,0,0,0.3);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 0.75rem 0.9rem;
  transition: border-color var(--transition);
  animation: fadeSlideUp 0.25s ease;
}

.case-card:hover { border-color: rgba(0,212,255,0.2); }

.case-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.45rem;
}

.case-type-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--cyan);
}

.case-value {
  font-family: var(--font-mono);
  font-size: 0.83rem;
  color: var(--text-primary);
  word-break: break-all;
  line-height: 1.5;
}

/* ── Markdown Previewer ───────────────────────────────────── */
.md-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.md-toolbar-label {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.md-toolbar-actions { display: flex; align-items: center; gap: 0.5rem; }

.md-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.2rem;
  min-height: 420px;
}

.md-editor { height: 100%; min-height: 400px; resize: none; font-size: 0.88rem; }

.md-preview {
  background: rgba(0,0,0,0.25);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.2rem 1.4rem;
  overflow-y: auto;
  line-height: 1.75;
  font-size: 0.92rem;
  color: var(--text-primary);
  min-height: 400px;
}

.md-preview h1 { font-size: 1.7rem; font-weight: 700; margin: 0.5rem 0 0.8rem; border-bottom: 1px solid var(--border); padding-bottom: 0.5rem; }
.md-preview h2 { font-size: 1.3rem; font-weight: 700; margin: 1.2rem 0 0.6rem; }
.md-preview h3 { font-size: 1.05rem; font-weight: 600; margin: 1rem 0 0.5rem; }
.md-preview h4,.md-preview h5,.md-preview h6 { font-size: 0.95rem; font-weight: 600; margin: 0.8rem 0 0.4rem; }
.md-preview p { margin: 0.6em 0; }
.md-preview strong { font-weight: 700; }
.md-preview em { font-style: italic; color: #c4b5fd; }
.md-preview a { color: var(--cyan); text-decoration: underline; text-underline-offset: 3px; }
.md-preview code { font-family: var(--font-mono); font-size: 0.85em; background: rgba(0,212,255,0.08); border: 1px solid rgba(0,212,255,0.15); border-radius: 4px; padding: 0.1em 0.4em; color: var(--text-code); }
.md-preview pre { background: rgba(0,0,0,0.4); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 1rem; overflow-x: auto; margin: 0.8rem 0; }
.md-preview pre code { background: none; border: none; padding: 0; font-size: 0.86rem; }
.md-preview blockquote { border-left: 3px solid var(--purple); margin: 0.8rem 0; padding: 0.5rem 1rem; color: var(--text-secondary); background: rgba(124,58,237,0.06); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; }
.md-preview ul,.md-preview ol { margin: 0.5rem 0 0.5rem 1.5rem; }
.md-preview li { margin: 0.25rem 0; }
.md-preview hr { border: none; border-top: 1px solid var(--border); margin: 1.2rem 0; }
.md-preview table { width: 100%; border-collapse: collapse; margin: 0.8rem 0; font-size: 0.88rem; }
.md-preview th { background: rgba(0,212,255,0.06); padding: 0.5rem 0.75rem; text-align: left; border: 1px solid var(--border); font-weight: 600; }
.md-preview td { padding: 0.45rem 0.75rem; border: 1px solid var(--border); }
.md-preview tr:hover td { background: rgba(255,255,255,0.02); }

/* ── QR Generator ─────────────────────────────────────────── */
.qr-layout { display: grid; grid-template-columns: 1fr auto; gap: 2.5rem; align-items: start; }
.qr-controls { min-width: 0; }
.qr-form-group { margin-bottom: 0.85rem; }
.qr-form-group label { display: block; margin-bottom: 0.45rem; }
.qr-opt-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.qr-opt .control-label { margin-bottom: 0.5rem; }
.qr-color-opt { display: flex; flex-direction: column; gap: 0.45rem; }
.qr-color-opt .control-label { margin-bottom: 0; }
.qr-hint { margin-top: 0.85rem; font-size: 0.77rem; color: var(--text-muted); line-height: 1.55; }
.qr-preview-col { display: flex; flex-direction: column; align-items: center; gap: 1rem; flex-shrink: 0; }
.qr-canvas-wrap { width: 264px; height: 264px; background: rgba(0,0,0,0.4); border: 2px dashed rgba(255,255,255,0.1); border-radius: var(--radius-lg); display: flex; align-items: center; justify-content: center; overflow: hidden; transition: border-color var(--transition); }
.qr-canvas-wrap.qr-canvas-wrap--ready { border-style: solid; border-color: rgba(0,212,255,0.2); background: #fff; padding: 8px; }
.qr-placeholder { text-align: center; color: var(--text-muted); padding: 1rem; }
.qr-placeholder p { font-size: 0.82rem; margin-top: 0.65rem; }
#qrOutput canvas, #qrOutput img { display: block; width: 100% !important; height: auto !important; border-radius: 4px; }
.qr-actions { display: flex; flex-direction: column; gap: 0.5rem; width: 100%; }

/* ── QR Reader ────────────────────────────────────────────── */
.qr-dropzone { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 0.65rem; padding: 3rem 2rem; background: rgba(0,0,0,0.3); border: 2px dashed rgba(255,255,255,0.12); border-radius: var(--radius-lg); cursor: pointer; text-align: center; transition: border-color var(--transition), background var(--transition); color: var(--text-secondary); }
.qr-dropzone:hover,.qr-dropzone:focus-visible { border-color: rgba(0,212,255,0.4); background: rgba(0,212,255,0.04); color: var(--text-primary); outline: none; }
.qr-dropzone.drag-over { border-color: var(--cyan); background: rgba(0,212,255,0.08); }
.dropzone-title { font-size: 1rem; font-weight: 600; }
.dropzone-sub { font-size: 0.8rem; color: var(--text-muted); }
.qr-read-result { margin-top: 1.4rem; animation: fadeSlideUp 0.3s ease; }
.qr-read-value { display: flex; align-items: flex-start; justify-content: space-between; gap: 0.75rem; padding: 1rem 1.1rem; background: rgba(16,217,126,0.05); border: 1px solid rgba(16,217,126,0.2); border-radius: var(--radius-md); margin-bottom: 0.75rem; }
.qr-read-text { font-family: var(--font-mono); font-size: 0.9rem; color: var(--green); word-break: break-all; line-height: 1.65; flex: 1; }
.qr-read-actions { display: flex; gap: 0.5rem; flex-wrap: wrap; margin-top: 0.5rem; }
.wifi-row { display: flex; gap: 0.5rem; padding: 0.3rem 0; }
.wifi-label { font-weight: 600; color: var(--text-secondary); min-width: 80px; }
.wifi-val { font-family: var(--font-mono); color: var(--cyan); }

/* ── Color Converter ──────────────────────────────────────── */
.palette-output { display: flex; flex-wrap: wrap; gap: 1rem; min-height: 140px; margin-top: 1rem; }
.color-layout { display: flex; gap: 2rem; align-items: flex-start; }
.color-swatch-col { flex-shrink: 0; display: flex; flex-direction: column; align-items: center; gap: 0.75rem; }
.color-swatch { width: 120px; height: 120px; border-radius: var(--radius-lg); border: 2px solid rgba(255,255,255,0.1); box-shadow: 0 8px 32px rgba(0,0,0,0.4); transition: background 0.15s ease; }
.color-inputs-col { flex: 1; display: flex; flex-direction: column; gap: 0.85rem; }
.color-input-group { display: flex; flex-direction: column; gap: 0.4rem; }
.color-fmt-label { font-size: 0.7rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-muted); }
.color-input-row { display: flex; gap: 0.5rem; align-items: center; }
.color-input-row .input-field { flex: 1; }

/* ── Gradient Generator ───────────────────────────────────── */
.grad-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; align-items: start; }
.grad-stops { display: flex; flex-direction: column; gap: 0.6rem; margin-top: 1rem; }
.grad-stop-row { display: flex; align-items: center; gap: 0.6rem; }
.grad-stop-row .color-input { flex-shrink: 0; }
.grad-stop-row .slider { flex: 1; }
.grad-pos-val { font-family: var(--font-mono); font-size: 0.75rem; color: var(--cyan); min-width: 34px; text-align: right; }
.grad-preview-col { display: flex; flex-direction: column; gap: 1rem; }
.grad-preview { width: 100%; height: 180px; border-radius: var(--radius-lg); border: 1px solid var(--border); box-shadow: 0 8px 32px rgba(0,0,0,0.35); transition: background 0.25s ease; background: linear-gradient(135deg, #00d4ff, #7c3aed); }
.grad-css-output { display: block; padding: 0.85rem 1rem; background: rgba(0,0,0,0.4); border: 1px solid var(--border); border-radius: var(--radius-md); font-family: var(--font-mono); font-size: 0.8rem; color: var(--text-code); word-break: break-all; line-height: 1.6; cursor: text; user-select: all; min-height: 48px; }

/* ── Lorem Ipsum ──────────────────────────────────────────── */
.lorem-type-group { border: none; display: flex; gap: 0.65rem; flex-wrap: wrap; }
.lorem-output { background: rgba(0,0,0,0.3); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 1.1rem 1.2rem; font-size: 0.92rem; line-height: 1.75; color: var(--text-secondary); min-height: 120px; white-space: pre-wrap; }

/* ── Text Diff ────────────────────────────────────────────── */
.diff-input-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.2rem; }
.diff-summary { display: flex; gap: 0.75rem; flex-wrap: wrap; margin: 1rem 0; padding: 0.75rem 1rem; background: rgba(0,0,0,0.25); border: 1px solid var(--border); border-radius: var(--radius-md); }
.diff-stat { font-size: 0.82rem; font-weight: 600; display: flex; align-items: center; gap: 0.4rem; }
.diff-stat--add { color: var(--green); }
.diff-stat--del { color: var(--red); }
.diff-stat--same { color: var(--text-muted); }
.diff-output { margin-top: 0.85rem; background: rgba(0,0,0,0.3); border: 1px solid var(--border); border-radius: var(--radius-md); overflow: hidden; font-family: var(--font-mono); font-size: 0.84rem; line-height: 1.65; }
.diff-line { display: flex; align-items: baseline; padding: 0.2rem 1rem; min-height: 26px; }
.diff-line--add { background: rgba(16,217,126,0.08); }
.diff-line--del { background: rgba(255,77,106,0.08); }
.diff-sign { min-width: 18px; font-weight: 700; flex-shrink: 0; margin-right: 0.5rem; }
.diff-line--add .diff-sign { color: var(--green); }
.diff-line--del .diff-sign { color: var(--red); }
.diff-line--same .diff-sign { color: var(--text-muted); }
.diff-text { word-break: break-all; white-space: pre-wrap; color: var(--text-secondary); }
.diff-line--add .diff-text { color: #a7f3d0; }
.diff-line--del .diff-text { color: #fca5a5; }

/* ── Responsive Tool Overrides ────────────────────────────── */
@media (max-width: 768px) {
  .ts-grid { grid-template-columns: 1fr; }
  .ts-divider { display: none; }
  .md-split { grid-template-columns: 1fr; }
  .md-editor,.md-preview { min-height: 280px; }
  .qr-layout { grid-template-columns: 1fr; }
  .qr-preview-col { align-items: flex-start; }
  .qr-canvas-wrap { width: 220px; height: 220px; }
  .grad-layout { grid-template-columns: 1fr; }
  .color-layout { flex-direction: column; }
  .color-swatch { width: 80px; height: 80px; }
  .diff-input-grid { grid-template-columns: 1fr; }
  .b64-grid { grid-template-columns: 1fr; }
  .qr-opt-row { grid-template-columns: 1fr; }
  .section { padding: 4rem 0; }
}

@media (max-width: 480px) {
  .case-grid { grid-template-columns: 1fr; }
  .ts-now-bar { flex-direction: column; align-items: flex-start; }
}