:root {
  --bg: #0f1115;
  --panel: #171a21;
  --panel-2: #1e222b;
  --border: #2a2f3a;
  --text: #e6e9ef;
  --muted: #8b93a7;
  --accent: #7c5cff;
  --accent-2: #00d4ff;
  --success: #22c55e;
  --danger: #ef4444;
  --radius: 14px;
}

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

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: radial-gradient(1200px 600px at 10% -10%, #1a1f2e, #0f1115) fixed;
  color: var(--text);
  min-height: 100vh;
  padding: 24px;
}
.app { max-width: 1200px; margin: 0 auto; }

.hero { text-align: center; margin-bottom: 28px; }
.hero h1 {
  font-size: 2.4rem;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  letter-spacing: -0.5px;
}
.hero p { color: var(--muted); margin-top: 6px; font-size: 0.95rem; }

.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
@media (max-width: 900px) { .grid { grid-template-columns: 1fr; } }

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
}
.panel h2 {
  font-size: 1rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 12px;
  margin-top: 20px;
}
.panel h2:first-child { margin-top: 0; }

.hint { font-size: 0.8rem; color: var(--muted); margin-bottom: 10px; }
.hint a { color: var(--accent-2); text-decoration: none; margin: 0 4px; }
.hint a:hover { text-decoration: underline; }

/* DROP ZONE */
.drop-zone {
  display: block;
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 32px 16px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
  background: var(--panel-2);
}
.drop-zone:hover, .drop-zone.drag {
  border-color: var(--accent);
  background: #1d2030;
}
.drop-content .icon { font-size: 2.4rem; display: block; margin-bottom: 8px; }
.drop-content p { margin-bottom: 6px; }
.drop-content small { color: var(--muted); }

.file-info {
  margin-top: 12px;
  padding: 10px 14px;
  background: var(--panel-2);
  border-left: 3px solid var(--accent);
  border-radius: 8px;
  font-size: 0.9rem;
  color: var(--muted);
}

/* EFFECT GROUPS */
.effect-group { margin-bottom: 14px; }
.effect-group h3 {
  font-size: 0.78rem;
  color: var(--accent-2);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 8px;
  opacity: 0.85;
}
.effects-grid { display: flex; flex-wrap: wrap; gap: 8px; }

.chip input { display: none; }
.chip span {
  display: inline-block;
  padding: 7px 13px;
  border-radius: 999px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  cursor: pointer;
  font-size: 0.82rem;
  transition: all 0.15s;
  user-select: none;
}
.chip span:hover { border-color: var(--accent); }
.chip input:checked + span {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-color: transparent;
  color: white;
  font-weight: 600;
  box-shadow: 0 4px 14px rgba(124, 92, 255, 0.35);
}

/* FIELDS */
.field { margin-bottom: 16px; }
.field label {
  display: flex;
  justify-content: space-between;
  font-size: 0.88rem;
  color: var(--muted);
  margin-bottom: 8px;
}
.field output {
  color: var(--accent-2);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}
input[type="range"] {
  width: 100%;
  -webkit-appearance: none;
  height: 6px;
  border-radius: 3px;
  background: var(--panel-2);
  outline: none;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  cursor: pointer;
  box-shadow: 0 0 0 4px rgba(124, 92, 255, 0.15);
}
input[type="range"]::-moz-range-thumb {
  width: 18px; height: 18px;
  border: none; border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
}

/* BUTTONS */
button, .primary, .secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: 10px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: transform 0.1s, box-shadow 0.2s, opacity 0.2s;
}
.primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: white;
  width: 100%;
  margin-top: 8px;
  box-shadow: 0 8px 24px rgba(124, 92, 255, 0.3);
}
.primary:hover:not(:disabled) { transform: translateY(-2px); }
.primary:disabled { opacity: 0.4; cursor: not-allowed; box-shadow: none; }
.secondary {
  background: var(--panel-2);
  color: var(--text);
  border: 1px solid var(--border);
}
.secondary:hover { border-color: var(--accent); }

/* PREVIEW PANEL */
.preview { display: flex; flex-direction: column; }
.placeholder {
  flex: 1;
  min-height: 280px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--panel-2);
  border-radius: var(--radius);
  border: 1px dashed var(--border);
  color: var(--muted);
  gap: 12px;
}
.placeholder span { font-size: 3rem; opacity: 0.5; }

#previewVideo {
  width: 100%;
  border-radius: var(--radius);
  background: black;
  margin-bottom: 14px;
}

/* PROGRESS */
.progress-wrap { margin-top: 14px; }
.progress-bar {
  width: 100%;
  height: 8px;
  background: var(--panel-2);
  border-radius: 4px;
  overflow: hidden;
}
#progressFill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transition: width 0.3s ease;
}
#progressText {
  margin-top: 8px;
  font-size: 0.85rem;
  color: var(--muted);
  text-align: center;
}

.result-actions { display: flex; gap: 10px; margin-top: 14px; }
.result-actions .primary,
.result-actions .secondary { flex: 1; margin: 0; }

.error {
  margin-top: 12px;
  padding: 12px;
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid var(--danger);
  border-radius: 8px;
  color: #fca5a5;
  font-size: 0.88rem;
}

.hidden { display: none !important; }

footer {
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
  margin-top: 30px;
}








/* =========================================
   COMPARE / PREVIEW HEADER
   ========================================= */
.preview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
  gap: 12px;
  flex-wrap: wrap;
}
.preview-header h2 { margin: 0; }

.view-toggle {
  display: inline-flex;
  gap: 4px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 3px;
}
.view-toggle .tab {
  padding: 6px 12px;
  border-radius: 7px;
  background: transparent;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all 0.15s;
}
.view-toggle .tab:hover { color: var(--text); }
.view-toggle .tab.active {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: white;
  box-shadow: 0 4px 12px rgba(124, 92, 255, 0.3);
}

/* =========================================
   COMPARE AREA
   ========================================= */
.compare-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 320px;
}
.compare-mode { display: none; }
.compare-mode.active { display: block; }

/* ---------- SIDE-BY-SIDE ---------- */
#sideView {
  display: none;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
#sideView.active { display: grid; }

.video-card {
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.video-label {
  display: flex;
  justify-content: center;
  padding: 6px;
  background: #0f1115;
  border-bottom: 1px solid var(--border);
}
.badge {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 1px;
  padding: 3px 10px;
  border-radius: 999px;
}
.badge.original {
  background: rgba(139, 147, 167, 0.2);
  color: #b8c0d4;
}
.badge.remix {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: white;
}

.video-card video {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: contain;
  background: black;
  display: block;
}

/* ---------- SLIDER OVERLAY ---------- */
#sliderView.active { display: block; }

.slider-container {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: black;
  border-radius: 12px;
  overflow: hidden;
  user-select: none;
  touch-action: none;
}
.slider-container video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: black;
  pointer-events: none;
}
.slider-top {
  position: absolute;
  inset: 0;
  width: 50%;
  overflow: hidden;
  transition: width 0.03s linear;
}
.slider-top video {
  width: 100vw;       /* fixed to viewport-independent width */
  max-width: none;
}
/* Keep slider-top video sized to the container, not the clipped parent */
.slider-top #sliderRemix {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}
/* Trick: use a wrapper sized to container */
.slider-container .slider-top {
  clip-path: inset(0 50% 0 0);
}
.slider-container .slider-top #sliderRemix {
  width: 100%;
  height: 100%;
  object-fit: contain;
}
/* Better approach — override with scaleX so remix stays full width */
.slider-top { width: 100% !important; clip-path: inset(0 50% 0 0); }

/* ---------- HANDLE ---------- */
.slider-handle {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 3px;
  transform: translateX(-50%);
  background: linear-gradient(180deg, var(--accent), var(--accent-2));
  cursor: ew-resize;
  z-index: 5;
  box-shadow: 0 0 12px rgba(124, 92, 255, 0.7);
}
.handle-line {
  position: absolute;
  top: 0; bottom: 0; left: 50%;
  width: 3px;
  transform: translateX(-50%);
  background: white;
  opacity: 0.9;
}
.handle-grip {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 700;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
  border: 2px solid white;
}

.slider-tags {
  position: absolute;
  top: 10px;
  left: 0; right: 0;
  display: flex;
  justify-content: space-between;
  padding: 0 12px;
  pointer-events: none;
  z-index: 4;
}
.tag {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 1px;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.65);
  color: white;
  backdrop-filter: blur(6px);
}
.tag.original-tag { background: rgba(60, 60, 80, 0.75); }
.tag.remix-tag {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
}

/* ---------- SLIDER CONTROLS ---------- */
.slider-controls {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 10px;
  padding: 8px 12px;
  background: var(--panel-2);
  border-radius: 10px;
  border: 1px solid var(--border);
}
.ctrl-btn {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: none;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: white;
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  padding: 0;
}
.ctrl-btn:hover { transform: scale(1.05); }

#sliderScrub {
  flex: 1;
  -webkit-appearance: none;
  height: 5px;
  border-radius: 3px;
  background: var(--border);
  outline: none;
}
#sliderScrub::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: white;
  cursor: pointer;
  box-shadow: 0 0 6px rgba(0, 0, 0, 0.5);
}
#sliderScrub::-moz-range-thumb {
  width: 14px; height: 14px;
  border: none; border-radius: 50%;
  background: white;
  cursor: pointer;
}
#sliderTime {
  font-size: 0.78rem;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  min-width: 88px;
  text-align: right;
}

/* ---------- SINGLE MODE ---------- */
#singleView video {
  width: 100%;
  border-radius: 12px;
  background: black;
}

/* ---------- RESPONSIVE ---------- */
@media (max-width: 700px) {
  #sideView.active { grid-template-columns: 1fr; }
  .view-toggle .tab { padding: 5px 8px; font-size: 0.7rem; }
}




/* =========================================
   ORDERED EFFECT LISTS
   ========================================= */
.order-block {
  margin-bottom: 20px;
  padding: 14px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 12px;
}
.order-block h3 {
  font-size: 0.85rem;
  color: var(--accent-2);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 6px;
}
.order-block .hint {
  font-size: 0.78rem;
  color: var(--muted);
  margin-bottom: 10px;
  line-height: 1.4;
}

.ordered-list {
  min-height: 42px;
  padding: 6px;
  background: #0f1115;
  border: 1px dashed var(--border);
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 10px;
}
.ordered-list:empty::before {
  content: "Drop or add effects below…";
  color: var(--muted);
  font-size: 0.78rem;
  padding: 6px;
  font-style: italic;
}

.ordered-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  background: linear-gradient(135deg, rgba(124,92,255,0.18), rgba(0,212,255,0.12));
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.85rem;
  cursor: grab;
  user-select: none;
}
.ordered-item.dragging { opacity: 0.4; cursor: grabbing; }
.ordered-item.drag-over { border-color: var(--accent); box-shadow: 0 0 0 2px rgba(124,92,255,0.3); }

.ordered-item .grip {
  color: var(--muted);
  font-size: 0.9rem;
  cursor: grab;
}
.ordered-item .num {
  min-width: 22px;
  height: 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  color: white;
  border-radius: 50%;
  font-size: 0.72rem;
  font-weight: 700;
}
.ordered-item .label { flex: 1; color: var(--text); }
.ordered-item .remove {
  background: transparent;
  border: none;
  color: var(--muted);
  cursor: pointer;
  font-size: 1rem;
  padding: 0 4px;
  line-height: 1;
}
.ordered-item .remove:hover { color: var(--danger); }

.add-effect {
  width: 100%;
  padding: 8px 10px;
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.85rem;
  cursor: pointer;
}
.add-effect:hover { border-color: var(--accent); }

.toggle.small { padding: 8px 10px; font-size: 0.82rem; margin-top: 8px; }




/* =========================================
   ORDERED EFFECT LISTS
   ========================================= */
.order-block {
  margin-bottom: 20px;
  padding: 14px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 12px;
}
.order-block h3 {
  font-size: 0.85rem;
  color: var(--accent-2);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 6px;
}
.order-block .hint {
  font-size: 0.78rem;
  color: var(--muted);
  margin-bottom: 10px;
  line-height: 1.4;
}

.ordered-list {
  min-height: 42px;
  padding: 6px;
  background: #0f1115;
  border: 1px dashed var(--border);
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 10px;
}
.ordered-list:empty::before {
  content: "Drop or add effects below…";
  color: var(--muted);
  font-size: 0.78rem;
  padding: 6px;
  font-style: italic;
}

.ordered-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  background: linear-gradient(135deg, rgba(124,92,255,0.18), rgba(0,212,255,0.12));
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.85rem;
  cursor: grab;
  user-select: none;
}
.ordered-item.dragging { opacity: 0.4; cursor: grabbing; }
.ordered-item.drag-over {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(124,92,255,0.3);
}

.ordered-item .grip {
  color: var(--muted);
  font-size: 0.9rem;
  cursor: grab;
}
.ordered-item .num {
  min-width: 22px;
  height: 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  color: white;
  border-radius: 50%;
  font-size: 0.72rem;
  font-weight: 700;
}
.ordered-item .label { flex: 1; color: var(--text); }
.ordered-item .remove {
  background: transparent;
  border: none;
  color: var(--muted);
  cursor: pointer;
  font-size: 1rem;
  padding: 0 4px;
  line-height: 1;
}
.ordered-item .remove:hover { color: var(--danger); }

.add-effect {
  width: 100%;
  padding: 8px 10px;
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.85rem;
  cursor: pointer;
}
.add-effect:hover { border-color: var(--accent); }

.toggle.small { padding: 8px 10px; font-size: 0.82rem; margin-top: 8px; }

/* =========================================
   WINDOWED EFFECT LISTS
   ========================================= */
.ordered-list.windows .ordered-item {
  flex-wrap: wrap;
  row-gap: 6px;
}

.ordered-item .window {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.72rem;
  color: var(--muted);
  background: rgba(0,0,0,0.35);
  padding: 3px 8px;
  border-radius: 6px;
  border: 1px solid var(--border);
}
.ordered-item .window input {
  width: 48px;
  padding: 2px 6px;
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 0.75rem;
  text-align: center;
}
.ordered-item .window input:focus {
  border-color: var(--accent);
  outline: none;
}
.ordered-item .window input::placeholder { color: var(--muted); }

.window-quick {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin: 8px 0 10px;
  font-size: 0.78rem;
  color: var(--muted);
}
.window-quick input {
  width: 70px;
  padding: 4px 8px;
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.8rem;
}
.window-quick input:focus { border-color: var(--accent); outline: none; }

.mini-btn {
  padding: 5px 10px;
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.75rem;
  cursor: pointer;
}
.mini-btn:hover { border-color: var(--accent); color: var(--accent-2); }

/* =========================================
   TIMELINE PREVIEW (per-segment chips)
   ========================================= */
#timelinePreview {
  margin-top: 10px;
  padding: 8px;
  background: #0f1115;
  border: 1px solid var(--border);
  border-radius: 8px;
  max-height: 220px;
  overflow-y: auto;
}
#timelinePreview:empty { display: none; }

.tp-row {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 4px 2px;
  border-bottom: 1px dashed rgba(255,255,255,0.05);
}
.tp-row:last-child { border-bottom: none; }

.tp-num {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--panel-2);
  color: var(--accent-2);
  border-radius: 50%;
  font-size: 0.7rem;
  font-weight: 700;
}
.tp-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}
.tp-chip {
  display: inline-block;
  padding: 2px 8px;
  background: rgba(124,92,255,0.18);
  border: 1px solid rgba(124,92,255,0.4);
  border-radius: 999px;
  font-size: 0.7rem;
  color: var(--text);
}
.tp-chip.empty {
  background: transparent;
  border-color: var(--border);
  color: var(--muted);
}


.url-row { display: flex; gap: 8px; }
.url-row input {
  flex: 1;
  padding: 10px 12px;
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.85rem;
}
.url-row input:focus { border-color: var(--accent); outline: none; }