/* ============================================================ TOKENS */
:root {
  --paper:        #0e0d0b;
  --paper-2:      #15130f;
  --paper-3:      #1e1b15;
  --paper-edge:   #08070a;
  --ink:          #ece6da;
  --ink-mute:     #b6ad9c;
  --ink-dim:      rgba(236,230,218,0.55);
  --ink-faint:    rgba(236,230,218,0.16);
  --ink-line:     rgba(236,230,218,0.22);
  --ink-hair:     rgba(236,230,218,0.10);
  --accent:       #ff4a1c;
  --accent-warm:  #ff8054;
  --accent-deep:  #c43411;
  --danger:       #ff4a1c;

  --mono:    "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --display: "Fraunces", ui-serif, Georgia, "Times New Roman", serif;

  --section-pad-y: 18px;
  --section-pad-x: 22px;
  --panel-w: 372px;

  --speed-1: 90ms;
  --speed-2: 200ms;
  --ease:    cubic-bezier(.2,.7,.2,1);
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.45;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  font-feature-settings: "ss01" on, "ss02" on, "tnum" on;
  overflow: hidden;
}

button, input, select, textarea { font: inherit; color: inherit; }
button { background: none; border: 0; cursor: pointer; padding: 0; }
input:focus, button:focus { outline: none; }
:focus-visible {
  outline: 1px solid var(--accent);
  outline-offset: 1px;
}

::selection { background: var(--accent); color: var(--paper); }

/* ============================================================ MASTHEAD */
.masthead {
  position: relative;
  display: flex;
  align-items: stretch;
  justify-content: space-between;
  border-bottom: 1px solid var(--ink-line);
  padding: 12px 22px;
  background: linear-gradient(180deg, var(--paper) 0%, var(--paper) 80%, var(--paper-2) 100%);
  z-index: 2;
}
.masthead .brand {
  display: flex;
  align-items: baseline;
  gap: 14px;
  letter-spacing: 0.005em;
}
.masthead .brand .mark {
  font-family: var(--display);
  font-style: italic;
  font-weight: 500;
  font-size: 30px;
  letter-spacing: -0.01em;
  line-height: 1;
  color: var(--ink);
  position: relative;
}
.masthead .brand .mark::after {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  background: var(--accent);
  margin-left: 6px;
  vertical-align: 4px;
}
.masthead .brand .tag {
  font-family: var(--mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.22em;
  color: var(--ink-mute);
}
.masthead .meta {
  display: flex;
  gap: 18px;
  align-items: center;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--ink-mute);
}
.masthead .meta .dot {
  display: inline-block;
  width: 5px;
  height: 5px;
  background: var(--accent);
  margin-right: 6px;
  vertical-align: 1px;
}
.masthead .meta .stamp {
  border: 1px solid var(--ink-line);
  padding: 4px 8px;
  letter-spacing: 0.18em;
}

/* ============================================================ WORKSPACE */
.workspace {
  display: grid;
  grid-template-columns: var(--panel-w) 1fr;
  height: calc(100vh - 56px);
  height: calc(100dvh - 56px);
}

/* ============================================================ PANEL */
.panel {
  border-right: 1px solid var(--ink-line);
  overflow-y: auto;
  overflow-x: hidden;
  background: var(--paper);
  scrollbar-width: thin;
  scrollbar-color: var(--ink-faint) transparent;
}
.panel::-webkit-scrollbar { width: 6px; }
.panel::-webkit-scrollbar-thumb { background: var(--ink-faint); }
.panel::-webkit-scrollbar-thumb:hover { background: var(--ink-line); }

.section {
  border-bottom: 1px solid var(--ink-line);
  padding: var(--section-pad-y) var(--section-pad-x) calc(var(--section-pad-y) + 4px);
  position: relative;
}
.section:last-child { border-bottom: 0; }

.section > .head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 14px;
}
.section > .head .left {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink);
}
.section > .head .num {
  color: var(--accent);
  font-weight: 600;
}
.section > .head .right {
  font-size: 9px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-mute);
}

/* Row helpers */
.row { display: flex; gap: 10px; }
.row.tight { gap: 6px; }
.row.between { justify-content: space-between; align-items: center; }
.row + .row { margin-top: 12px; }
.label-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-size: 9.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: 6px;
}
.label-row .val {
  color: var(--ink);
  font-feature-settings: "tnum" on;
  font-variant-numeric: tabular-nums;
  font-size: 11px;
  letter-spacing: 0;
  text-transform: none;
}

/* ============================================================ BUTTONS */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 9px 12px;
  border: 1px solid var(--ink-line);
  color: var(--ink);
  background: transparent;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background var(--speed-1) var(--ease), color var(--speed-1) var(--ease), border-color var(--speed-1) var(--ease);
}
.btn:hover { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.btn.accent { border-color: var(--accent); color: var(--accent); }
.btn.accent:hover { background: var(--accent); color: var(--paper); }
.btn.solid { background: var(--ink); color: var(--paper); }
.btn.solid:hover { background: var(--accent); color: var(--paper); border-color: var(--accent); }
.btn.danger { color: var(--danger); border-color: var(--danger); }
.btn.danger:hover { background: var(--danger); color: var(--paper); }
.btn.full { width: 100%; }
.btn .ico {
  display: inline-block;
  width: 8px; height: 8px;
  background: currentColor;
  -webkit-mask-position: center; mask-position: center;
  -webkit-mask-size: contain; mask-size: contain;
  -webkit-mask-repeat: no-repeat; mask-repeat: no-repeat;
}

/* segmented control */
.seg {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: 1fr;
  border: 1px solid var(--ink-line);
}
.seg > button {
  padding: 8px 6px;
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-mute);
  border-right: 1px solid var(--ink-line);
  background: transparent;
  transition: color var(--speed-1) var(--ease), background var(--speed-1) var(--ease);
}
.seg > button:last-child { border-right: 0; }
.seg > button:hover { color: var(--ink); }
.seg > button.on {
  background: var(--ink);
  color: var(--paper);
}

/* toggle */
.toggle {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  user-select: none;
}
.toggle .switch {
  width: 30px; height: 14px;
  background: transparent;
  border: 1px solid var(--ink-line);
  position: relative;
  transition: background var(--speed-1) var(--ease), border-color var(--speed-1) var(--ease);
}
.toggle .switch::after {
  content: "";
  position: absolute;
  top: 1px; left: 1px;
  width: 10px; height: 10px;
  background: var(--ink-mute);
  transition: transform var(--speed-2) var(--ease), background var(--speed-2) var(--ease);
}
.toggle.on .switch { border-color: var(--accent); }
.toggle.on .switch::after { transform: translateX(16px); background: var(--accent); }
.toggle .lbl {
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

/* slider */
input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 16px;
  background: transparent;
  cursor: pointer;
  margin: 0;
  display: block;
}
input[type="range"]::-webkit-slider-runnable-track {
  height: 1px;
  background: var(--ink-line);
}
input[type="range"]::-moz-range-track {
  height: 1px;
  background: var(--ink-line);
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  height: 12px;
  width: 12px;
  background: var(--paper);
  border: 1px solid var(--ink);
  margin-top: -6px;
  cursor: ew-resize;
  transition: background var(--speed-1) var(--ease), border-color var(--speed-1) var(--ease), transform var(--speed-1) var(--ease);
}
input[type="range"]:hover::-webkit-slider-thumb,
input[type="range"]:focus-visible::-webkit-slider-thumb {
  background: var(--accent);
  border-color: var(--accent);
  transform: scale(1.15);
}
input[type="range"]::-moz-range-thumb {
  height: 12px;
  width: 12px;
  background: var(--paper);
  border: 1px solid var(--ink);
  border-radius: 0;
  cursor: ew-resize;
}
input[type="range"]:hover::-moz-range-thumb,
input[type="range"]:focus-visible::-moz-range-thumb {
  background: var(--accent);
  border-color: var(--accent);
}

/* color picker (compact) */
.color-pick {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
}
.color-pick input[type="color"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
  border: 0;
  padding: 0;
  background: transparent;
  width: 100%;
  height: 100%;
}
.color-pick .swatch {
  width: 22px; height: 22px;
  border: 1px solid var(--ink-line);
  background: var(--paper);
  display: block;
  flex: none;
  position: relative;
}
.color-pick .swatch::after {
  content: "";
  position: absolute;
  inset: 2px;
  background: var(--c, var(--ink));
}
.color-pick .hex {
  font-size: 11px;
  color: var(--ink);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-variant-numeric: tabular-nums;
}

/* ============================================================ 01 SOURCE */
.dropzone {
  border: 1px dashed var(--ink-line);
  padding: 22px 14px;
  text-align: center;
  cursor: pointer;
  background: var(--paper-2);
  position: relative;
  transition: border-color var(--speed-1) var(--ease), background var(--speed-1) var(--ease), color var(--speed-1) var(--ease);
}
.dropzone:hover { border-color: var(--ink); }
.dropzone.drag {
  border-color: var(--accent);
  background: rgba(255,74,28,0.07);
  color: var(--accent);
}
.dropzone .dz-head {
  font-family: var(--display);
  font-style: italic;
  font-weight: 400;
  font-size: 22px;
  line-height: 1.05;
  margin-bottom: 6px;
}
.dropzone .dz-sub {
  font-size: 9.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-mute);
}
.dropzone .corner {
  position: absolute;
  width: 6px; height: 6px;
  border: 1px solid var(--ink-line);
}
.dropzone .corner.tl { top: 4px; left: 4px; border-right: 0; border-bottom: 0; }
.dropzone .corner.tr { top: 4px; right: 4px; border-left: 0; border-bottom: 0; }
.dropzone .corner.bl { bottom: 4px; left: 4px; border-right: 0; border-top: 0; }
.dropzone .corner.br { bottom: 4px; right: 4px; border-left: 0; border-top: 0; }

.src-actions {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 6px;
  margin-top: 10px;
}

.src-info {
  margin-top: 12px;
  border-top: 1px solid var(--ink-hair);
  padding-top: 12px;
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 4px 14px;
  font-size: 11px;
}
.src-info .k {
  color: var(--ink-mute);
  font-size: 9.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.src-info .v {
  color: var(--ink);
  word-break: break-all;
  font-variant-numeric: tabular-nums;
}

/* ============================================================ 03 SHAPES */
.shapes-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
}
.shape-slot {
  position: relative;
  border: 1px solid var(--ink-line);
  background: var(--paper-2);
  cursor: pointer;
  user-select: none;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  transition: border-color var(--speed-1) var(--ease);
}
.shape-slot:hover { border-color: var(--ink); }
.shape-slot .shape-preview {
  aspect-ratio: 1 / 1;
  width: 100%;
  background-color: var(--paper-3);
  background-position: center;
  background-repeat: no-repeat;
  background-size: 72% 72%;
  position: relative;
}
.shape-slot .shape-color-bar {
  height: 5px;
  background: var(--c, var(--ink));
  position: relative;
}
.shape-slot .shape-color-bar input {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
  padding: 0;
  border: 0;
  background: transparent;
}
.shape-slot .shape-idx {
  display: block;
  text-align: center;
  font-size: 9px;
  letter-spacing: 0.14em;
  color: var(--ink-mute);
  padding: 3px 0 4px;
  border-top: 1px solid var(--ink-hair);
}
.shape-slot .shape-pos {
  position: absolute;
  top: 3px; right: 3px;
  font-size: 7.5px;
  letter-spacing: 0.1em;
  color: var(--ink-mute);
  pointer-events: none;
}
.shape-ends {
  display: flex;
  justify-content: space-between;
  font-size: 8.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-top: 6px;
}
.shape-ends span:first-child { color: var(--ink); }

/* hidden file inputs */
.hidden-file { display: none; }

/* ============================================================ STAGE */
.stage {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(120% 80% at 50% 0%, rgba(255,74,28,0.05), transparent 60%),
    var(--paper-2);
  overflow: hidden;
}
.stage::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    45deg,
    transparent 0,
    transparent 7px,
    rgba(236,230,218,0.035) 7px,
    rgba(236,230,218,0.035) 8px
  );
  pointer-events: none;
  z-index: 0;
}
.stage::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(120% 90% at 50% 50%, transparent 55%, rgba(0,0,0,0.45) 100%);
  z-index: 0;
}
.stage-inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 28px;
  gap: 16px;
  max-width: 100%;
  max-height: 100%;
}
.stage-frame {
  position: relative;
  border: 1px solid var(--ink-line);
  padding: 1px;
  background: var(--paper);
  box-shadow: 0 0 0 6px var(--paper-edge), 0 30px 60px -20px rgba(0,0,0,0.6);
  max-width: 100%;
  max-height: 100%;
}
.stage-frame::before, .stage-frame::after,
.stage-frame .reg::before, .stage-frame .reg::after {
  content: "";
  position: absolute;
  width: 10px;
  height: 10px;
  border: 1px solid var(--accent);
  pointer-events: none;
}
.stage-frame::before { top: -12px; left: -12px; border-right: 0; border-bottom: 0; }
.stage-frame::after  { top: -12px; right: -12px; border-left: 0; border-bottom: 0; }
.stage-frame .reg::before { bottom: -12px; left: -12px; border-right: 0; border-top: 0; }
.stage-frame .reg::after  { bottom: -12px; right: -12px; border-left: 0; border-top: 0; }
.stage-frame canvas {
  display: block;
  max-width: min(calc(100vw - var(--panel-w) - 80px), 1200px);
  max-height: calc(100vh - 200px);
  max-height: calc(100dvh - 200px);
}
.stage-frame.empty canvas {
  width: 720px;
  height: 405px;
  background: var(--paper-2);
}

.readout {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  justify-content: center;
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-mute);
  width: 100%;
  max-width: 1200px;
}
.readout .pair { display: inline-flex; align-items: baseline; gap: 8px; }
.readout .k { color: var(--ink-mute); }
.readout .v {
  color: var(--ink);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
  text-transform: none;
}
.readout .v .unit { color: var(--ink-mute); margin-left: 2px; }

/* recording status */
.rec-status {
  display: none;
  align-items: center;
  gap: 8px;
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-left: 8px;
}
.rec-status.on { display: inline-flex; }
.rec-status .dot {
  width: 8px; height: 8px;
  background: var(--accent);
  animation: blink 1s steps(2, end) infinite;
  border-radius: 50%;
}
@keyframes blink { 50% { opacity: 0.2; } }

/* ============================================================ FORM HELPERS */
.field { display: block; }
.field + .field { margin-top: 14px; }

/* notice / footer */
.colophon {
  padding: 14px var(--section-pad-x);
  font-size: 9.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-mute);
  border-top: 1px solid var(--ink-line);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.colophon .pulse {
  display: inline-block;
  width: 6px; height: 6px;
  background: var(--accent);
  margin-right: 6px;
  animation: pulse 2.4s ease-in-out infinite;
  vertical-align: 1px;
}
@keyframes pulse {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 1; }
}

/* initial-load stagger */
.section { animation: fadeUp 480ms var(--ease) backwards; }
.section:nth-child(1) { animation-delay: 40ms; }
.section:nth-child(2) { animation-delay: 90ms; }
.section:nth-child(3) { animation-delay: 140ms; }
.section:nth-child(4) { animation-delay: 190ms; }
.section:nth-child(5) { animation-delay: 240ms; }
.section:nth-child(6) { animation-delay: 290ms; }
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}
.stage-frame { animation: fadeUp 600ms var(--ease) 80ms backwards; }
.masthead    { animation: fadeUp 380ms var(--ease) backwards; }

/* ============================================================ RESPONSIVE */
@media (max-width: 880px) {
  body { overflow: auto; }
  .workspace {
    grid-template-columns: 1fr;
    height: auto;
  }
  .panel {
    border-right: 0;
    border-bottom: 1px solid var(--ink-line);
    max-height: none;
  }
  .stage {
    min-height: 60vh;
    padding: 0;
  }
  .stage-frame canvas {
    max-width: calc(100vw - 80px);
  }
  .masthead { padding: 10px 16px; flex-direction: column; align-items: flex-start; gap: 8px; }
}

/* ============================================================ MISC */
.muted { color: var(--ink-mute); }
.kbd {
  display: inline-block;
  padding: 1px 6px;
  border: 1px solid var(--ink-line);
  font-size: 9px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-mute);
}