/* ═══════════════════════════════════════════════════
   TRANSITIONS DEMOS — transitions-demos.css
   Selector prefix: dm-tr-
   Scope: .demo-tr-shape | .demo-tr-color | .demo-tr-combo
          | .demo-tr-opacity | .demo-tr-willchange
═══════════════════════════════════════════════════ */

/* ── SHARED PRIMITIVES ── */
.demo-tr-shape,
.demo-tr-color,
.demo-tr-combo,
.demo-tr-opacity,
.demo-tr-willchange {
  background: #080d18;
  min-height: 100%;
}

.dm-tr-wrap {
  max-width: 1180px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 3rem;
}

.dm-tr-head {
  text-align: left;
  border-bottom: 1px solid rgba(255,255,255,.07);
  padding-bottom: 1.5rem;
  margin-bottom: 2.25rem;
}
.dm-tr-meta {
  font-family: 'Montserrat', sans-serif;
  font-size: .62rem;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: .65rem;
}
.dm-tr-head h1 {
  font-family: 'Oswald', sans-serif;
  font-size: clamp(1.7rem, 3.6vw, 2.6rem);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .02em;
  color: #fff;
  margin: 0 0 .65rem;
  line-height: 1.05;
}
.dm-tr-lead {
  font-family: 'Inter', 'Montserrat', sans-serif;
  font-size: .92rem;
  color: rgba(255,255,255,.65);
  line-height: 1.7;
  max-width: 720px;
  margin: 0;
}
.dm-tr-lead code,
.dm-tr-desc code {
  font-family: 'Menlo', monospace;
  font-size: .82em;
  background: rgba(37,99,235,.14);
  color: #93c5fd;
  padding: 1px 6px;
  border-radius: 4px;
}

.dm-tr-section {
  padding: 2.5rem 0 1rem;
  border-bottom: 1px solid rgba(255,255,255,.05);
}
.dm-tr-section:last-of-type { border-bottom: none; }
.dm-tr-section-head {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: .55rem;
}
.dm-tr-num {
  font-family: 'Oswald', sans-serif;
  font-size: .8rem;
  font-weight: 700;
  color: var(--green);
  letter-spacing: .1em;
  border: 1px solid rgba(16,185,129,.4);
  background: rgba(16,185,129,.1);
  padding: 4px 10px;
  border-radius: 6px;
}
.dm-tr-section-head h2 {
  font-family: 'Oswald', sans-serif;
  font-size: clamp(1.15rem, 2.2vw, 1.55rem);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .03em;
  color: #fff;
  margin: 0;
}
.dm-tr-desc {
  font-family: 'Inter', 'Montserrat', sans-serif;
  font-size: .85rem;
  color: rgba(255,255,255,.6);
  line-height: 1.7;
  max-width: 720px;
  margin: 0 0 1.4rem;
}

/* Code-Note (analog .dm-la-code-note) */
.dm-tr-code-note {
  text-align: center;
  padding: 2rem 1rem 1rem;
  font-family: 'Montserrat', sans-serif;
}
.dm-tr-code-note code {
  font-family: 'Menlo', 'Courier New', monospace;
  font-size: .78rem;
  background: rgba(37,99,235,.14);
  color: #93c5fd;
  padding: 7px 18px;
  border-radius: 6px;
  display: inline-block;
}

/* Buttons */
.dm-tr-btn {
  font-family: 'Montserrat', sans-serif;
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  padding: 9px 18px;
  border-radius: 7px;
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.14);
  color: rgba(255,255,255,.78);
  cursor: pointer;
  transition: background .2s ease, border-color .2s ease, color .2s ease, transform .15s ease;
}
.dm-tr-btn:hover {
  background: rgba(37,99,235,.18);
  border-color: rgba(37,99,235,.5);
  color: #fff;
  transform: translateY(-1px);
}
.dm-tr-btn.active {
  background: rgba(16,185,129,.18);
  border-color: var(--green);
  color: var(--green);
}
.dm-tr-btn-primary {
  background: linear-gradient(135deg, var(--blue), var(--green));
  border-color: transparent;
  color: #fff;
}
.dm-tr-btn-primary:hover { color: #fff; transform: translateY(-2px); }
.dm-tr-btn-success { border-color: rgba(16,185,129,.45); color: #6ee7b7; }
.dm-tr-btn-info    { border-color: rgba(37,99,235,.45);  color: #93c5fd; }
.dm-tr-btn-warn    { border-color: rgba(234,179,8,.5);   color: #fcd34d; }

/* Slider controls block (shared) */
.dm-tr-controls {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  background: rgba(255,255,255,.03);
  border: 1px solid rgba(255,255,255,.07);
  border-radius: 12px;
  padding: 1.25rem 1.25rem;
}
.dm-tr-control {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.dm-tr-control label {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-family: 'Montserrat', sans-serif;
  font-size: .62rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: rgba(255,255,255,.45);
}
.dm-tr-control label span {
  font-family: 'Menlo', monospace;
  font-size: .78rem;
  color: #93c5fd;
  letter-spacing: 0;
  text-transform: none;
  font-weight: 600;
}
.dm-tr-control input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 4px;
  background: rgba(255,255,255,.1);
  border-radius: 2px;
  outline: none;
  cursor: pointer;
}
.dm-tr-control input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px; height: 16px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--blue), var(--green));
  cursor: pointer;
  border: 2px solid #0d1422;
  box-shadow: 0 0 0 1px rgba(37,99,235,.6);
}
.dm-tr-control input[type="range"]::-moz-range-thumb {
  width: 14px; height: 14px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--blue), var(--green));
  cursor: pointer;
  border: 2px solid #0d1422;
}

.dm-tr-presets {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  padding-top: .25rem;
}

/* Generic stage area */
.dm-tr-stage {
  background: linear-gradient(135deg, rgba(37,99,235,.08), rgba(16,185,129,.05));
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 12px;
  min-height: 280px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}
.dm-tr-stage-tall { min-height: 320px; }

.dm-tr-pg-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 1.25rem;
}
@media (max-width: 760px) {
  .dm-tr-pg-grid { grid-template-columns: 1fr; }
}

/* Code output box */
.dm-tr-code-output {
  font-family: 'Menlo', 'Courier New', monospace;
  font-size: .72rem;
  color: #93c5fd;
  background: rgba(37,99,235,.1);
  border: 1px solid rgba(37,99,235,.25);
  border-radius: 6px;
  padding: 9px 12px;
  word-break: break-all;
  line-height: 1.5;
}


/* ══════════════════════════════════════════════════════════
   1. SHAPE TRANSITION
══════════════════════════════════════════════════════════ */
.dm-tr-shape-box {
  width: 160px;
  height: 160px;
  border-radius: 12%;
  background: linear-gradient(135deg, var(--blue), var(--green));
  box-shadow: 0 18px 48px rgba(37,99,235,.35);
  transition: border-radius .4s ease, width .4s ease, height .4s ease, background .4s ease;
}

/* Clip-path morph */
.dm-tr-clip-stage {
  background: rgba(255,255,255,.03);
  border: 1px solid rgba(255,255,255,.07);
  border-radius: 12px;
  padding: 2rem 1.5rem 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
}
.dm-tr-clip-shape {
  width: 200px;
  height: 200px;
  background: linear-gradient(135deg, #ec4899, #8b5cf6);
  transition: clip-path .55s cubic-bezier(.6, -0.05, .25, 1.4), -webkit-clip-path .55s cubic-bezier(.6, -0.05, .25, 1.4);
}
.dm-tr-clip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
}

/* Submit-Button morph */
.dm-tr-submit-stage {
  background: rgba(255,255,255,.03);
  border: 1px solid rgba(255,255,255,.07);
  border-radius: 12px;
  padding: 2.5rem 1.5rem;
  display: flex;
  justify-content: center;
}
.dm-tr-submit-btn {
  position: relative;
  font-family: 'Montserrat', sans-serif;
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  padding: 0 30px;
  height: 52px;
  width: 240px;
  border-radius: 26px;
  border: none;
  background: linear-gradient(135deg, var(--blue), var(--green));
  color: #fff;
  cursor: pointer;
  overflow: hidden;
  box-shadow: 0 10px 28px rgba(37,99,235,.35);
  transition: width .45s cubic-bezier(.6, -0.05, .25, 1.4),
              border-radius .45s cubic-bezier(.6, -0.05, .25, 1.4),
              background .45s ease;
}
.dm-tr-submit-label,
.dm-tr-submit-spinner,
.dm-tr-submit-check {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity .25s ease;
}
.dm-tr-submit-spinner,
.dm-tr-submit-check { opacity: 0; }
.dm-tr-submit-spinner {
  width: 22px; height: 22px;
  border: 3px solid rgba(255,255,255,.3);
  border-top-color: #fff;
  border-radius: 50%;
  inset: auto;
  position: absolute;
  top: 50%; left: 50%;
  margin: -11px 0 0 -11px;
  animation: dmTrSpin 0.85s linear infinite;
  animation-play-state: paused;
}
.dm-tr-submit-check svg {
  width: 26px; height: 26px;
  color: #fff;
}
@keyframes dmTrSpin { to { transform: rotate(360deg); } }

.dm-tr-submit-btn.is-loading {
  width: 52px;
  border-radius: 50%;
  background: var(--blue);
}
.dm-tr-submit-btn.is-loading .dm-tr-submit-label { opacity: 0; }
.dm-tr-submit-btn.is-loading .dm-tr-submit-spinner {
  opacity: 1;
  animation-play-state: running;
}

.dm-tr-submit-btn.is-done {
  width: 52px;
  border-radius: 50%;
  background: var(--green);
}
.dm-tr-submit-btn.is-done .dm-tr-submit-label { opacity: 0; }
.dm-tr-submit-btn.is-done .dm-tr-submit-check { opacity: 1; }


/* ══════════════════════════════════════════════════════════
   2. COLOR TRANSITION
══════════════════════════════════════════════════════════ */

/* Swatch grid */
.dm-tr-swatch-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}
.dm-tr-swatch {
  background-color: var(--c-a);
  border-radius: 12px;
  padding: 1.5rem 1.25rem;
  min-height: 130px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  cursor: pointer;
  border: 1px solid rgba(255,255,255,.08);
  transition: background-color .5s ease, transform .25s ease, box-shadow .3s ease;
}
.dm-tr-swatch:hover {
  background-color: var(--c-b);
  transform: translateY(-3px);
  box-shadow: 0 14px 38px rgba(0,0,0,.35);
}
.dm-tr-swatch-name {
  font-family: 'Oswald', sans-serif;
  font-size: 1.05rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: #fff;
}
.dm-tr-swatch-hex {
  font-family: 'Menlo', monospace;
  font-size: .68rem;
  color: rgba(255,255,255,.7);
  margin-top: 4px;
}
@media (max-width: 640px) {
  .dm-tr-swatch-grid { grid-template-columns: repeat(2, 1fr); }
}

/* Theme toggle stage */
.dm-tr-theme-stage {
  --tm-bg:        #0b1224;
  --tm-card:      #131c33;
  --tm-text:      #fff;
  --tm-muted:     rgba(255,255,255,.55);
  --tm-border:    rgba(255,255,255,.12);
  --tm-cta:       linear-gradient(135deg, #2563eb, #10b981);
  --tm-cta-text:  #fff;
  --tm-input-bg:  rgba(255,255,255,.06);
  background: var(--tm-bg);
  border-radius: 14px;
  padding: 2rem 1.75rem;
  position: relative;
  border: 1px solid var(--tm-border);
  transition: background-color .6s ease, border-color .6s ease;
}
.dm-tr-theme-stage.is-light {
  --tm-bg:        #f5f3ee;
  --tm-card:      #ffffff;
  --tm-text:      #0f172a;
  --tm-muted:     #64748b;
  --tm-border:    rgba(15,23,42,.12);
  --tm-cta:       linear-gradient(135deg, #f59e0b, #ec4899);
  --tm-cta-text:  #fff;
  --tm-input-bg:  rgba(15,23,42,.05);
}
.dm-tr-theme-card {
  background: var(--tm-card);
  border: 1px solid var(--tm-border);
  border-radius: 12px;
  padding: 1.5rem;
  max-width: 520px;
  transition: background-color .6s ease, border-color .6s ease;
}
.dm-tr-theme-eyebrow {
  font-family: 'Montserrat', sans-serif;
  font-size: .6rem;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--tm-muted);
  margin-bottom: .55rem;
  transition: color .6s ease;
}
.dm-tr-theme-title {
  font-family: 'Oswald', sans-serif;
  font-size: 1.5rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .02em;
  color: var(--tm-text);
  margin: 0 0 .65rem;
  transition: color .6s ease;
}
.dm-tr-theme-body {
  font-family: 'Inter', sans-serif;
  font-size: .85rem;
  line-height: 1.6;
  color: var(--tm-muted);
  margin: 0 0 1rem;
  transition: color .6s ease;
}
.dm-tr-theme-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.dm-tr-theme-input {
  flex: 1;
  min-width: 180px;
  font-family: 'Inter', sans-serif;
  font-size: .85rem;
  padding: 10px 14px;
  border-radius: 8px;
  background: var(--tm-input-bg);
  border: 1px solid var(--tm-border);
  color: var(--tm-text);
  outline: none;
  transition: background-color .6s ease, border-color .6s ease, color .6s ease;
}
.dm-tr-theme-input::placeholder {
  color: var(--tm-muted);
  transition: color .6s ease;
}
.dm-tr-theme-cta {
  font-family: 'Montserrat', sans-serif;
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  padding: 10px 22px;
  border: none;
  border-radius: 8px;
  background: var(--tm-cta);
  color: var(--tm-cta-text);
  cursor: pointer;
  transition: filter .25s ease, background .6s ease;
}
.dm-tr-theme-cta:hover { filter: brightness(1.1); }

.dm-tr-theme-toggle {
  position: absolute;
  top: 16px; right: 16px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px 7px 11px;
  border-radius: 9999px;
  font-family: 'Montserrat', sans-serif;
  font-size: .65rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  background: var(--tm-input-bg);
  border: 1px solid var(--tm-border);
  color: var(--tm-text);
  cursor: pointer;
  transition: background-color .6s ease, border-color .6s ease, color .6s ease;
}
.dm-tr-theme-toggle-icon {
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--tm-text);
  transition: background-color .6s ease;
}

/* HSL playground */
.dm-tr-hsl-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}
@media (max-width: 760px) {
  .dm-tr-hsl-grid { grid-template-columns: 1fr; }
}
.dm-tr-hsl-stage {
  border-radius: 12px;
  background-color: hsl(212, 78%, 52%);
  min-height: 240px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255,255,255,.08);
  transition: background-color .35s ease, color .35s ease;
}
.dm-tr-hsl-readout {
  font-family: 'Menlo', monospace;
  font-size: .9rem;
  background: rgba(0,0,0,.35);
  padding: 6px 14px;
  border-radius: 6px;
  color: #fff;
  letter-spacing: .04em;
  transition: color .3s ease;
}


/* ══════════════════════════════════════════════════════════
   3. TRANSFORM COMBO
══════════════════════════════════════════════════════════ */

/* Hover-Matrix */
.dm-tr-combo-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}
@media (max-width: 760px) { .dm-tr-combo-grid { grid-template-columns: repeat(2, 1fr); } }

.dm-tr-combo-card {
  background: linear-gradient(135deg, rgba(37,99,235,.16), rgba(16,185,129,.1));
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 12px;
  padding: 1.25rem 1rem;
  min-height: 160px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  cursor: pointer;
  transition: transform .35s cubic-bezier(.34, 1.56, .64, 1),
              box-shadow .3s ease,
              border-color .3s ease;
}
.dm-tr-combo-card:hover {
  border-color: rgba(37,99,235,.5);
  box-shadow: 0 18px 42px rgba(0,0,0,.45);
}
.dm-tr-combo-key {
  font-family: 'Oswald', sans-serif;
  font-size: 1.6rem;
  font-weight: 700;
  color: #fff;
  line-height: 1;
}
.dm-tr-combo-label {
  font-family: 'Montserrat', sans-serif;
  font-size: .58rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: rgba(255,255,255,.5);
  line-height: 1.5;
}
.dm-tr-combo-label code {
  font-family: 'Menlo', monospace;
  font-size: .8em;
  color: #93c5fd;
  text-transform: none;
  letter-spacing: 0;
}

.dm-tr-combo-a:hover { transform: translateY(-8px) scale(1.05); }
.dm-tr-combo-b:hover { transform: translateX(8px) rotate(4deg); }
.dm-tr-combo-c:hover { transform: skew(-6deg, 0deg) scale(1.06); }
.dm-tr-combo-d:hover { transform: translate(4px, -6px) rotate(3deg) scale(1.08); }

/* Slider playground */
.dm-tr-combo-box {
  width: 140px;
  height: 140px;
  border-radius: 14px;
  background: linear-gradient(135deg, #ec4899, #8b5cf6);
  box-shadow: 0 16px 42px rgba(139,92,246,.4);
  transition: transform .25s cubic-bezier(.34, 1.56, .64, 1);
}

/* Flying card */
.dm-tr-fly-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  align-items: stretch;
}
@media (max-width: 760px) { .dm-tr-fly-grid { grid-template-columns: 1fr; } }

.dm-tr-fly-card {
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 14px;
  padding: 1.5rem 1.25rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: .85rem;
  position: relative;
  transition: transform .35s cubic-bezier(.34, 1.56, .64, 1),
              box-shadow .35s ease,
              border-color .3s ease;
}
.dm-tr-fly-card:hover {
  transform: translateY(-10px) rotate(-1deg) scale(1.02);
  border-color: rgba(37,99,235,.4);
  box-shadow: 0 22px 56px rgba(37,99,235,.25);
}
.dm-tr-fly-featured {
  background: linear-gradient(160deg, rgba(37,99,235,.18), rgba(16,185,129,.1));
  border-color: rgba(37,99,235,.5);
}
.dm-tr-fly-featured:hover {
  transform: translateY(-14px) rotate(1deg) scale(1.04);
}
.dm-tr-fly-badge {
  position: absolute;
  top: -10px; left: 1.25rem;
  font-family: 'Montserrat', sans-serif;
  font-size: .55rem;
  font-weight: 800;
  letter-spacing: .14em;
  text-transform: uppercase;
  background: linear-gradient(135deg, var(--blue), var(--green));
  color: #fff;
  padding: 4px 10px;
  border-radius: 9999px;
}
.dm-tr-fly-tier {
  font-family: 'Montserrat', sans-serif;
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: rgba(255,255,255,.5);
}
.dm-tr-fly-price {
  font-family: 'Oswald', sans-serif;
  font-size: 2.4rem;
  font-weight: 700;
  color: #fff;
  line-height: 1;
}
.dm-tr-fly-price span {
  font-size: 1.4rem;
  vertical-align: top;
  margin-right: 4px;
  color: rgba(255,255,255,.6);
}
.dm-tr-fly-price small {
  font-size: .8rem;
  color: rgba(255,255,255,.5);
  font-weight: 500;
  margin-left: 4px;
}
.dm-tr-fly-list {
  list-style: none;
  margin: 0; padding: 0;
  display: flex;
  flex-direction: column;
  gap: .45rem;
  flex: 1;
}
.dm-tr-fly-list li {
  font-family: 'Inter', sans-serif;
  font-size: .82rem;
  color: rgba(255,255,255,.7);
  padding-left: 18px;
  position: relative;
}
.dm-tr-fly-list li::before {
  content: '✓';
  position: absolute;
  left: 0; top: 0;
  color: var(--green);
  font-weight: 800;
}
.dm-tr-fly-cta {
  font-family: 'Montserrat', sans-serif;
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  padding: 10px 18px;
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,.18);
  background: rgba(255,255,255,.05);
  color: #fff;
  cursor: pointer;
  transition: background .25s ease, border-color .25s ease;
}
.dm-tr-fly-cta:hover {
  background: rgba(37,99,235,.18);
  border-color: rgba(37,99,235,.5);
}
.dm-tr-fly-cta-primary {
  background: linear-gradient(135deg, var(--blue), var(--green));
  border-color: transparent;
}


/* ══════════════════════════════════════════════════════════
   4. OPACITY + VISIBILITY
══════════════════════════════════════════════════════════ */

/* A) NAIVE vs. KORREKT */
.dm-tr-vs-toolbar {
  margin-bottom: 1rem;
}
.dm-tr-vs-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}
@media (max-width: 760px) { .dm-tr-vs-grid { grid-template-columns: 1fr; } }

.dm-tr-vs-col {
  background: rgba(255,255,255,.03);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 12px;
  padding: 1rem 1rem 1.1rem;
  display: flex;
  flex-direction: column;
  gap: .8rem;
}
.dm-tr-vs-tag {
  display: inline-block;
  font-family: 'Montserrat', sans-serif;
  font-size: .58rem;
  font-weight: 800;
  letter-spacing: .18em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 6px;
  align-self: flex-start;
}
.dm-tr-vs-tag-bad {
  background: rgba(239,68,68,.15);
  color: #fca5a5;
  border: 1px solid rgba(239,68,68,.4);
}
.dm-tr-vs-tag-good {
  background: rgba(16,185,129,.15);
  color: var(--green);
  border: 1px solid rgba(16,185,129,.4);
}
.dm-tr-vs-stage {
  min-height: 180px;
  background: linear-gradient(135deg, rgba(37,99,235,.06), rgba(16,185,129,.04));
  border-radius: 10px;
  padding: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px dashed rgba(255,255,255,.08);
}
.dm-tr-vs-card {
  background: linear-gradient(135deg, var(--blue), var(--green));
  color: #fff;
  border-radius: 10px;
  padding: 1rem 1.1rem;
  max-width: 280px;
  font-family: 'Inter', sans-serif;
}
.dm-tr-vs-card h4 {
  font-family: 'Oswald', sans-serif;
  font-size: 1.05rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .03em;
  margin: 0 0 .35rem;
}
.dm-tr-vs-card p {
  font-size: .78rem;
  line-height: 1.5;
  margin: 0;
  color: rgba(255,255,255,.9);
}
.dm-tr-vs-card p code {
  font-family: 'Menlo', monospace;
  font-size: .9em;
  background: rgba(0,0,0,.25);
  padding: 1px 5px;
  border-radius: 3px;
}
.dm-tr-vs-naive.is-hidden { display: none; }
.dm-tr-vs-correct {
  opacity: 1;
  visibility: visible;
  transition: opacity .35s ease, visibility 0s linear 0s;
}
.dm-tr-vs-correct.is-hidden {
  opacity: 0;
  visibility: hidden;
  transition: opacity .35s ease, visibility 0s linear .35s;
}
.dm-tr-vs-code {
  font-family: 'Menlo', monospace;
  font-size: .68rem;
  color: #93c5fd;
  background: rgba(37,99,235,.1);
  border: 1px solid rgba(37,99,235,.22);
  padding: 6px 10px;
  border-radius: 6px;
  display: block;
  word-break: break-all;
}

/* Toasts */
.dm-tr-toast-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 1rem;
}
.dm-tr-toast-stack {
  position: fixed;
  top: 80px;
  right: 32px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 9999;
  pointer-events: none;
  max-width: 320px;
}
.dm-tr-toast {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 16px;
  background: #0f172a;
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 10px;
  box-shadow: 0 12px 36px rgba(0,0,0,.5);
  pointer-events: auto;
  opacity: 0;
  transform: translateX(40px);
  transition: opacity .3s ease, transform .3s ease;
}
.dm-tr-toast.is-in {
  opacity: 1;
  transform: translateX(0);
}
.dm-tr-toast.is-out {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity .5s ease, transform .5s ease;
}
.dm-tr-toast-icon {
  width: 26px; height: 26px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Oswald', sans-serif;
  font-size: .85rem;
  font-weight: 800;
  flex-shrink: 0;
  color: #0f172a;
}
.dm-tr-toast-success .dm-tr-toast-icon { background: #6ee7b7; }
.dm-tr-toast-info    .dm-tr-toast-icon { background: #93c5fd; }
.dm-tr-toast-warn    .dm-tr-toast-icon { background: #fcd34d; }
.dm-tr-toast-success { border-color: rgba(16,185,129,.4); }
.dm-tr-toast-info    { border-color: rgba(37,99,235,.4); }
.dm-tr-toast-warn    { border-color: rgba(234,179,8,.4); }
.dm-tr-toast-body { flex: 1; min-width: 0; }
.dm-tr-toast-title {
  font-family: 'Montserrat', sans-serif;
  font-size: .78rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: .02em;
  margin-bottom: 2px;
}
.dm-tr-toast-sub {
  font-family: 'Inter', sans-serif;
  font-size: .72rem;
  color: rgba(255,255,255,.6);
  line-height: 1.4;
}

/* Dropdown */
.dm-tr-dd-stage {
  background: rgba(255,255,255,.03);
  border: 1px solid rgba(255,255,255,.07);
  border-radius: 12px;
  padding: 2.5rem 1.5rem 4rem;
  display: flex;
  justify-content: center;
  min-height: 280px;
}
.dm-tr-dd-wrap {
  position: relative;
  display: inline-block;
}
.dm-tr-dd-trigger {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: 'Montserrat', sans-serif;
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  padding: 10px 16px;
  border-radius: 8px;
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.18);
  color: #fff;
  cursor: pointer;
  transition: background .2s ease, border-color .2s ease;
}
.dm-tr-dd-trigger:hover {
  background: rgba(37,99,235,.18);
  border-color: rgba(37,99,235,.5);
}
.dm-tr-dd-arrow {
  font-size: .9rem;
  transition: transform .25s ease;
}
.dm-tr-dd-wrap.is-open .dm-tr-dd-arrow { transform: rotate(180deg); }

.dm-tr-dd-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  min-width: 220px;
  background: #0f172a;
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 10px;
  box-shadow: 0 18px 48px rgba(0,0,0,.55);
  padding: 6px;
  display: flex;
  flex-direction: column;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: opacity .22s ease, transform .22s ease, visibility 0s linear .22s;
  z-index: 50;
}
.dm-tr-dd-wrap.is-open .dm-tr-dd-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  transition: opacity .22s ease, transform .22s ease, visibility 0s linear 0s;
}
.dm-tr-dd-item {
  font-family: 'Inter', sans-serif;
  font-size: .8rem;
  color: rgba(255,255,255,.85);
  padding: 9px 12px;
  border-radius: 6px;
  cursor: pointer;
  transition: background .15s ease, color .15s ease;
}
.dm-tr-dd-item:hover {
  background: rgba(37,99,235,.18);
  color: #fff;
}
.dm-tr-dd-item-danger { color: #fca5a5; }
.dm-tr-dd-item-danger:hover {
  background: rgba(239,68,68,.18);
  color: #fff;
}
.dm-tr-dd-sep {
  height: 1px;
  background: rgba(255,255,255,.08);
  margin: 4px 6px;
}


/* ══════════════════════════════════════════════════════════
   5. WILL-CHANGE
══════════════════════════════════════════════════════════ */

.dm-tr-warn-box {
  background: rgba(234,179,8,.08);
  border: 1px solid rgba(234,179,8,.3);
  border-left: 3px solid #fcd34d;
  border-radius: 8px;
  padding: .85rem 1rem;
  font-family: 'Inter', sans-serif;
  font-size: .82rem;
  color: rgba(255,255,255,.82);
  line-height: 1.6;
  margin-bottom: 1.4rem;
}
.dm-tr-warn-box strong {
  color: #fcd34d;
  letter-spacing: .03em;
}
.dm-tr-warn-box code {
  font-family: 'Menlo', monospace;
  font-size: .82em;
  background: rgba(234,179,8,.15);
  color: #fcd34d;
  padding: 1px 6px;
  border-radius: 4px;
}

.dm-tr-wc-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}
@media (max-width: 760px) { .dm-tr-wc-grid { grid-template-columns: 1fr; } }

.dm-tr-wc-col {
  background: rgba(255,255,255,.03);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 12px;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: .75rem;
}
.dm-tr-wc-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .5rem;
}
.dm-tr-wc-tag {
  font-family: 'Montserrat', sans-serif;
  font-size: .58rem;
  font-weight: 800;
  letter-spacing: .14em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 6px;
}
.dm-tr-wc-tag-off {
  background: rgba(255,255,255,.06);
  color: rgba(255,255,255,.6);
  border: 1px solid rgba(255,255,255,.12);
}
.dm-tr-wc-tag-on {
  background: rgba(16,185,129,.15);
  color: var(--green);
  border: 1px solid rgba(16,185,129,.4);
}
.dm-tr-fps {
  font-family: 'Menlo', monospace;
  font-size: .72rem;
  color: #93c5fd;
  background: rgba(37,99,235,.12);
  padding: 3px 8px;
  border-radius: 4px;
  border: 1px solid rgba(37,99,235,.25);
}

.dm-tr-wc-stage {
  position: relative;
  height: 240px;
  border-radius: 10px;
  background: linear-gradient(135deg, rgba(37,99,235,.05), rgba(0,0,0,.3));
  overflow: hidden;
  border: 1px dashed rgba(255,255,255,.08);
}

.dm-tr-wc-box {
  position: absolute;
  width: 22px;
  height: 22px;
  left: var(--x);
  top:  var(--y);
  border-radius: 5px;
  background: linear-gradient(135deg, #ec4899, #8b5cf6);
  animation: dmTrFloat 3.6s cubic-bezier(.45, .05, .55, .95) infinite;
  animation-delay: var(--d);
}
.dm-tr-wc-stage-on .dm-tr-wc-box {
  will-change: transform;
  background: linear-gradient(135deg, #2563eb, #10b981);
}
@keyframes dmTrFloat {
  0%, 100% { transform: translate(0, 0) rotate(0deg) scale(1); }
  25%      { transform: translate(28px, -22px) rotate(90deg) scale(1.18); }
  50%      { transform: translate(-18px, 24px) rotate(180deg) scale(.85); }
  75%      { transform: translate(22px, 18px) rotate(270deg) scale(1.1); }
}

/* Do / Don't */
.dm-tr-dodont-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
@media (max-width: 760px) { .dm-tr-dodont-grid { grid-template-columns: 1fr; } }

.dm-tr-dodont-card {
  border-radius: 12px;
  padding: 1.25rem 1.25rem 1.1rem;
  border: 1px solid rgba(255,255,255,.08);
}
.dm-tr-do {
  background: rgba(16,185,129,.08);
  border-color: rgba(16,185,129,.3);
}
.dm-tr-dont {
  background: rgba(239,68,68,.07);
  border-color: rgba(239,68,68,.3);
}
.dm-tr-dodont-head {
  font-family: 'Oswald', sans-serif;
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: .12em;
  margin-bottom: .65rem;
}
.dm-tr-do .dm-tr-dodont-head  { color: var(--green); }
.dm-tr-dont .dm-tr-dodont-head { color: #f87171; }
.dm-tr-dodont-card ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: .5rem;
}
.dm-tr-dodont-card li {
  font-family: 'Inter', sans-serif;
  font-size: .82rem;
  line-height: 1.55;
  color: rgba(255,255,255,.78);
  padding-left: 18px;
  position: relative;
}
.dm-tr-do li::before  { content: '✓'; position: absolute; left: 0; color: var(--green); font-weight: 800; }
.dm-tr-dont li::before { content: '✕'; position: absolute; left: 0; color: #f87171; font-weight: 800; }
.dm-tr-dodont-card code {
  font-family: 'Menlo', monospace;
  font-size: .82em;
  background: rgba(0,0,0,.25);
  color: #fcd34d;
  padding: 1px 5px;
  border-radius: 3px;
}

/* DevTools mock */
.dm-tr-devtools {
  background: #1a1d23;
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 10px;
  overflow: hidden;
  font-family: 'Menlo', monospace;
}
.dm-tr-dt-tabs {
  display: flex;
  background: #0f1115;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.dm-tr-dt-tab {
  padding: 8px 14px;
  font-size: .68rem;
  color: rgba(255,255,255,.45);
  border-right: 1px solid rgba(255,255,255,.08);
  letter-spacing: .04em;
}
.dm-tr-dt-tab-active {
  background: #1a1d23;
  color: #fff;
  border-bottom: 2px solid var(--blue);
}
.dm-tr-dt-body {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  min-height: 220px;
}
@media (max-width: 760px) { .dm-tr-dt-body { grid-template-columns: 1fr; } }

.dm-tr-dt-tree {
  padding: .85rem 1rem;
  border-right: 1px solid rgba(255,255,255,.08);
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.dm-tr-dt-row {
  font-size: .72rem;
  color: rgba(255,255,255,.6);
  padding: 4px 6px;
  border-radius: 4px;
}
.dm-tr-dt-row-indent  { padding-left: 16px; }
.dm-tr-dt-row-indent2 { padding-left: 32px; }
.dm-tr-dt-row-highlight {
  background: rgba(37,99,235,.18);
  color: #fff;
  border: 1px solid rgba(37,99,235,.35);
}
.dm-tr-dt-row-highlight em {
  color: #6ee7b7;
  font-style: normal;
}
.dm-tr-dt-row-highlight span {
  color: rgba(255,255,255,.5);
}
.dm-tr-dt-preview {
  padding: 1rem;
  background: #0f1115;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: .85rem;
}
.dm-tr-dt-layer-stack {
  position: relative;
  width: 200px;
  height: 130px;
  perspective: 600px;
}
.dm-tr-dt-layer {
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: 6px;
  border: 1px solid rgba(255,255,255,.18);
  display: flex;
  align-items: flex-start;
  justify-content: flex-start;
  padding: 6px 10px;
  font-size: .58rem;
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: rgba(255,255,255,.7);
}
.dm-tr-dt-layer-1 {
  background: rgba(255,255,255,.05);
  transform: rotateX(55deg) rotateZ(-18deg) translate(-30px, 24px);
}
.dm-tr-dt-layer-2 {
  background: rgba(37,99,235,.12);
  transform: rotateX(55deg) rotateZ(-18deg) translate(0px, 0px);
}
.dm-tr-dt-layer-3 {
  background: rgba(16,185,129,.18);
  border-color: var(--green);
  transform: rotateX(55deg) rotateZ(-18deg) translate(30px, -24px);
  box-shadow: 0 6px 20px rgba(16,185,129,.35);
}
.dm-tr-dt-layer-active::after {
  content: '★';
  position: absolute;
  top: 4px; right: 6px;
  color: #fcd34d;
  font-size: .85rem;
}
.dm-tr-dt-caption {
  font-family: 'Inter', sans-serif;
  font-size: .7rem;
  color: rgba(255,255,255,.5);
  text-align: center;
}
.dm-tr-dt-caption code {
  font-family: 'Menlo', monospace;
  background: rgba(16,185,129,.15);
  color: #6ee7b7;
  padding: 1px 5px;
  border-radius: 3px;
}


/* ── Responsive global tightening ── */
@media (max-width: 480px) {
  .dm-tr-wrap { padding: 1.5rem 1rem 2rem; }
  .dm-tr-section { padding: 1.75rem 0 .5rem; }
  .dm-tr-toast-stack { right: 12px; top: 70px; max-width: calc(100% - 24px); }
}