/* ── Hero ─────────────────────────────────────────── */
.app-hero {
  border-bottom: 1px solid var(--color-border);
  padding: 1.25rem 1.5rem 1.1rem;
  background: var(--color-surface);
}
.app-hero__inner { margin: 0 auto; }
.app-hero__title {
  font-size: clamp(1.4rem, 3vw, 2rem); font-weight: 800;
  color: var(--color-accent); letter-spacing: -.02em;
  margin: 0 0 .5rem; line-height: 1.2;
}
.app-hero__desc {
  font-size: .9rem; color: var(--color-text-secondary);
  max-width: 660px; line-height: 1.6; margin: 0 0 .85rem;
}
.app-hero__chips { display: flex; flex-wrap: wrap; gap: .35rem; }
.hero-chip {
  display: inline-flex; align-items: center;
  padding: .22rem .65rem; font-size: .72rem; font-weight: 700;
  background: var(--color-surface); border: 1.5px solid var(--color-border);
  border-radius: var(--radius-full); color: var(--color-text-secondary); white-space: nowrap;
}

/* ── EPS to DST tool ───────────────────────────────────────────────────────── */

.ed-app {
  width: 100%;
}

/* Drop zone */
.ed-drop {
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-xl);
  background: var(--color-surface);
  cursor: pointer;
  transition: border-color .2s, background .2s;
  min-height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}
.ed-drop:hover,
.ed-drop.drag-over {
  border-color: var(--color-primary, #6366f1);
  background: rgba(99,102,241,.04);
}
.ed-drop-inner {
  padding: 2.5rem 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .5rem;
}
.ed-drop-icon { font-size: 2.5rem; }
.ed-drop-title {
  font-size: var(--text-base);
  font-weight: var(--weight-semibold);
  color: var(--color-text-primary);
  margin: 0;
}
.ed-drop-sub {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin: 0;
}

/* Work area */
.ed-work { display: flex; flex-direction: column; gap: 0; }

/* Top bar */
.ed-topbar {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: .6rem .25rem;
  flex-wrap: wrap;
}
.ed-filename {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  font-family: monospace;
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.ed-tabs {
  display: flex;
  gap: .25rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: .2rem;
}
.ed-tab {
  padding: .3rem .75rem;
  font-size: var(--text-sm);
  border-radius: var(--radius-md);
  border: none;
  background: transparent;
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: background .15s, color .15s;
  white-space: nowrap;
}
.ed-tab:hover { background: var(--color-surface-hover, rgba(0,0,0,.04)); }
.ed-tab.active {
  background: var(--color-primary, #6366f1);
  color: #fff;
}

/* Canvas */
.ed-canvas-wrap {
  width: 100%;
  height: 420px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #fafafa;
  position: relative;
}
#ed-canvas {
  display: block;
  width: 100%;
  height: 100%;
}

/* Fabric bar */
.ed-fabric-bar {
  display: flex;
  align-items: center;
  gap: .5rem;
  padding: .4rem 0;
  flex-wrap: wrap;
}
.ed-fabric-label {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}
.ed-fabric-btn {
  padding: .25rem .75rem;
  font-size: var(--text-sm);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: background .15s, color .15s, border-color .15s;
}
.ed-fabric-btn:hover { background: var(--color-surface-hover, rgba(0,0,0,.04)); }
.ed-fabric-btn.active {
  background: var(--color-primary, #6366f1);
  color: #fff;
  border-color: var(--color-primary, #6366f1);
}

/* Sim bar */
.ed-sim-bar {
  display: flex;
  align-items: center;
  gap: .6rem;
  padding: .5rem 0;
}
.ed-sim-btn {
  width: 34px;
  height: 34px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  cursor: pointer;
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background .15s;
}
.ed-sim-btn:hover { background: var(--color-surface-hover, rgba(0,0,0,.05)); }
.ed-scrubber {
  flex: 1;
  height: 4px;
  accent-color: var(--color-primary, #6366f1);
  cursor: pointer;
}
.ed-sim-speed {
  padding: .25rem .5rem;
  font-size: var(--text-sm);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-text-primary);
  cursor: pointer;
}

/* Stats bar */
.ed-stats-bar {
  display: flex;
  gap: .5rem;
  flex-wrap: wrap;
  padding: .4rem 0 .8rem;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 1rem;
}
.ed-stat {
  flex: 1;
  min-width: 80px;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: .5rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}
.ed-stat-val {
  font-size: var(--text-lg);
  font-weight: var(--weight-bold);
  color: var(--color-text-primary);
  line-height: 1.2;
}
.ed-stat-lbl {
  font-size: .7rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: .04em;
}

/* Columns */
.ed-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

/* Panel */
.ed-panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: .75rem;
}
.ed-panel-title {
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--color-text-primary);
  border-bottom: 1px solid var(--color-border);
  padding-bottom: .5rem;
  margin-bottom: .25rem;
}
.ed-label {
  display: flex;
  flex-direction: column;
  gap: .25rem;
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}
.ed-row {
  display: flex;
  align-items: center;
  gap: .5rem;
}
.ed-range { flex: 1; accent-color: var(--color-primary, #6366f1); }
.ed-range-val {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  min-width: 28px;
  text-align: right;
  font-variant-numeric: tabular-nums;
}
.ed-select {
  padding: .3rem .5rem;
  font-size: var(--text-sm);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-text-primary);
}
.ed-checkbox-label {
  flex-direction: row;
  align-items: center;
  gap: .5rem;
  cursor: pointer;
}
.ed-convert-btn {
  margin-top: .25rem;
  padding: .55rem 1rem;
  background: var(--color-primary, #6366f1);
  color: #fff;
  border: none;
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  cursor: pointer;
  transition: opacity .15s;
}
.ed-convert-btn:hover { opacity: .85; }

/* Thread palette */
.ed-palette {
  display: flex;
  flex-direction: column;
  gap: .4rem;
  max-height: 320px;
  overflow-y: auto;
}
.ed-palette-empty {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin: 0;
}
.ed-thread-row {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-size: var(--text-sm);
}
.ed-thread-swatch {
  width: 18px;
  height: 18px;
  border-radius: var(--radius-sm, 3px);
  border: 1px solid rgba(0,0,0,.1);
  flex-shrink: 0;
  display: block;
}
.ed-thread-name {
  flex: 1;
  color: var(--color-text-primary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.ed-thread-id {
  color: var(--color-text-muted);
  font-variant-numeric: tabular-nums;
  font-size: var(--text-xs);
}

/* Export row */
.ed-export-row {
  display: flex;
  gap: .5rem;
  flex-wrap: wrap;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--color-border);
}
.ed-export-btn {
  flex: 1;
  min-width: 120px;
  padding: .6rem 1rem;
  background: var(--color-surface);
  color: var(--color-text-primary);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  cursor: pointer;
  transition: border-color .15s, background .15s;
}
.ed-export-btn:hover {
  border-color: var(--color-primary, #6366f1);
  background: rgba(99,102,241,.05);
}

/* ── Mobile ──────────────────────────────────────────────────────────────────── */
@media (max-width: 700px) {
  .ed-canvas-wrap { height: 280px; }

  .ed-topbar { flex-direction: column; align-items: flex-start; gap: .4rem; }
  .ed-tabs { width: 100%; overflow-x: auto; }

  .ed-columns {
    grid-template-columns: 1fr;
  }

  .ed-stats-bar { gap: .3rem; }
  .ed-stat { padding: .35rem; }
  .ed-stat-val { font-size: var(--text-base); }

  .ed-export-row { gap: .35rem; }
  .ed-export-btn { min-width: 80px; font-size: .75rem; padding: .5rem .4rem; }

  .ed-sim-bar { flex-wrap: wrap; }
}

@media (max-width: 420px) {
  .ed-export-row { grid-template-columns: 1fr 1fr; display: grid; }
}

.learn-more{max-width:820px;margin:1.25rem auto 0;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-xl);padding:1.1rem 1.5rem}
.learn-more-title{font-size:1.1rem;font-weight:800;color:var(--color-text-primary);margin:0 0 .75rem}
.learn-more h3{font-size:1rem;font-weight:800;color:var(--color-text-primary);margin:1.1rem 0 .5rem}
.learn-more p{font-size:.88rem;line-height:1.65;color:var(--color-text-secondary);margin:0 0 .75rem}
.learn-more a{color:var(--color-primary,#6366f1)}
.learn-more .faq-item{margin-bottom:.75rem}
.learn-more .faq-q{font-size:.88rem;font-weight:700;color:var(--color-text-primary);margin:0 0 .25rem}
.learn-more-meta{font-size:.72rem;color:var(--color-text-muted);margin-top:1rem}