/* Keysmith Studio — dark studio theme */
:root {
  --bg: #14171c;
  --panel: #1b1f26;
  --panel-2: #232831;
  --line: #2c323c;
  --text: #eef1f5;
  --muted: #8b93a1;
  --accent: #ff6b35;
  --accent-2: #ff8c5a;
  --accent-ink: #1a0e06;
  --good: #6fd08c;
  --warn-bg: #3a2c14;
  --warn-ink: #ffd23f;
  --shadow: 0 8px 28px rgba(0, 0, 0, .45);
  --radius: 12px;
}
* { box-sizing: border-box; }
html, body {
  margin: 0; height: 100%;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg); color: var(--text);
}
#app { display: flex; height: 100vh; width: 100vw; overflow: hidden; }

/* ---------------- panel ---------------- */
#panel {
  width: 380px; min-width: 380px; background: var(--panel);
  border-right: 1px solid var(--line);
  display: flex; flex-direction: column; z-index: 2;
}
#panel header { padding: 16px 18px 12px; display: flex; align-items: center; gap: 12px; border-bottom: 1px solid var(--line); }
#panel header .logo {
  width: 38px; height: 38px; border-radius: 11px; font-size: 20px;
  background: linear-gradient(135deg, var(--accent), #ffb347);
  display: grid; place-items: center;
  box-shadow: 0 4px 14px rgba(255, 107, 53, .35);
}
#panel header h1 { font-size: 16px; margin: 0; font-weight: 800; letter-spacing: .01em; }
#panel header small { color: var(--muted); font-size: 11.5px; }

#scroll { overflow-y: auto; flex: 1; padding: 12px 0 96px; scrollbar-width: thin; scrollbar-color: var(--line) transparent; }

/* preset chips */
.presets { display: flex; gap: 8px; overflow-x: auto; padding: 2px 18px 12px; scrollbar-width: none; }
.presets::-webkit-scrollbar { display: none; }
.preset-chip {
  flex: 0 0 auto; display: flex; align-items: center; gap: 6px;
  background: var(--panel-2); color: var(--text); border: 1px solid var(--line);
  font: inherit; font-size: 12px; font-weight: 600; padding: 7px 12px; border-radius: 999px; cursor: pointer;
  transition: border-color .15s, transform .1s;
}
.preset-chip:hover { border-color: var(--accent); transform: translateY(-1px); }
.preset-chip span { font-size: 14px; }

/* mode tabs */
.mode-tabs { display: flex; gap: 6px; margin: 0 18px 6px; background: var(--panel-2); padding: 4px; border-radius: 11px; border: 1px solid var(--line); }
.mode-tab {
  flex: 1; background: transparent; color: var(--muted); border: none; font: inherit;
  font-size: 13px; font-weight: 700; padding: 9px; border-radius: 8px; cursor: pointer;
}
.mode-tab.active { background: var(--accent); color: var(--accent-ink); box-shadow: 0 3px 10px rgba(255, 107, 53, .3); }

/* sections */
.section { border-bottom: 1px solid var(--line); }
.section.hidden { display: none; }
.section > .head {
  padding: 13px 18px; display: flex; justify-content: space-between; align-items: center;
  cursor: pointer; user-select: none; font-size: 11.5px; letter-spacing: .08em;
  font-weight: 700; color: var(--muted); text-transform: uppercase;
}
.section > .head .chev { transition: transform .15s; }
.section.collapsed > .head .chev { transform: rotate(-90deg); }
.section .body { padding: 2px 18px 16px; display: grid; gap: 13px; }
.section.collapsed .body { display: none; }

/* fields */
.field { display: grid; gap: 6px; font-size: 12.5px; }
.field.hidden { display: none; }
.field .lbl { font-weight: 600; }
.field .lbl .hint { color: var(--muted); font-weight: 500; margin-left: 6px; font-size: 11.5px; }
select, textarea, input[type="text"] {
  width: 100%; background: var(--panel-2); border: 1px solid var(--line); color: var(--text);
  padding: 10px 12px; border-radius: 10px; font: inherit; font-size: 13px; outline: none;
}
textarea { resize: vertical; min-height: 64px; line-height: 1.5; }
select:focus, textarea:focus, input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(255, 107, 53, .18); }
.row { display: flex; align-items: center; gap: 10px; }
input[type="number"] {
  width: 70px; background: var(--panel-2); border: 1px solid var(--line); color: var(--text);
  padding: 8px; border-radius: 8px; font: inherit; font-size: 12.5px; outline: none;
}
input[type="range"] { flex: 1; accent-color: var(--accent); }
input[type="color"] { width: 42px; height: 32px; padding: 2px; border: 1px solid var(--line); border-radius: 8px; background: var(--panel-2); cursor: pointer; }
.hexbox { width: 96px !important; font-variant-numeric: tabular-nums; }

/* toggle */
.toggle { position: relative; width: 42px; height: 24px; flex: 0 0 auto; }
.toggle input { opacity: 0; width: 0; height: 0; }
.toggle .track { position: absolute; inset: 0; background: #353c47; border-radius: 20px; transition: .15s; }
.toggle .track::before {
  content: ""; position: absolute; width: 18px; height: 18px; left: 3px; top: 3px;
  background: #fff; border-radius: 50%; transition: .15s; box-shadow: 0 1px 3px rgba(0, 0, 0, .4);
}
.toggle input:checked + .track { background: var(--accent); }
.toggle input:checked + .track::before { transform: translateX(18px); }
.toggle-row { display: flex; align-items: center; justify-content: space-between; }

/* chip pickers (style / shape / attachment / thickness) */
.chip-grid { display: grid; gap: 7px; }
.chip-grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.chip-grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
.chip-grid.cols-5 { grid-template-columns: repeat(5, 1fr); }
.pick {
  background: var(--panel-2); border: 1px solid var(--line); color: var(--muted);
  border-radius: 10px; padding: 8px 4px 6px; cursor: pointer;
  display: flex; flex-direction: column; align-items: center; gap: 4px;
  font: inherit; font-size: 10.5px; font-weight: 600; line-height: 1.1;
  transition: border-color .12s, color .12s, transform .08s;
}
.pick:hover { border-color: #4a5260; color: var(--text); transform: translateY(-1px); }
.pick.on { border-color: var(--accent); color: var(--text); background: rgba(255, 107, 53, .10); box-shadow: 0 0 0 1px var(--accent) inset; }
.pick svg { width: 30px; height: 24px; display: block; color: currentColor; }
.pick.on svg { color: var(--accent-2); }
.pick .glyph { font-size: 16px; line-height: 24px; height: 24px; }

/* icon grid (smaller square cells) */
.icon-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 6px; }
.icon-grid .pick { padding: 7px 2px; border-radius: 9px; }
.icon-grid .pick svg { width: 22px; height: 22px; }
.icon-grid .pick span { display: none; }

/* advanced disclosure */
.adv-toggle {
  background: none; border: none; color: var(--muted); font: inherit; font-size: 11.5px;
  font-weight: 700; cursor: pointer; padding: 2px 0; text-align: left;
  display: flex; align-items: center; gap: 6px; letter-spacing: .03em;
}
.adv-toggle:hover { color: var(--accent-2); }
.adv-toggle .tri { transition: transform .15s; font-size: 9px; }
.adv-toggle.open .tri { transform: rotate(90deg); }
.adv-body { display: none; gap: 13px; padding-top: 4px; }
.adv-body.open { display: grid; }

/* palettes */
.palette-row { display: flex; gap: 8px; flex-wrap: wrap; }
.palette-chip {
  display: flex; gap: 0; border: 1px solid var(--line); border-radius: 8px; overflow: hidden;
  padding: 0; cursor: pointer; background: none; transition: border-color .15s, transform .1s;
}
.palette-chip:hover { border-color: var(--accent); transform: translateY(-1px); }
.palette-chip i { width: 18px; height: 26px; display: block; }

/* file buttons */
.btn-file {
  background: var(--panel-2); color: var(--muted); border: 1px dashed var(--line);
  font: inherit; font-size: 12.5px; font-weight: 600; padding: 10px; border-radius: 10px; cursor: pointer;
  text-align: left;
}
.btn-file:hover { border-color: var(--accent); color: var(--text); }

/* actions */
#actions {
  position: absolute; bottom: 0; left: 0; width: 380px;
  background: linear-gradient(0deg, var(--panel) 76%, transparent);
  padding: 16px 18px; display: flex; gap: 8px;
}
button { font: inherit; cursor: pointer; border: none; border-radius: 11px; }
.btn-primary {
  flex: 2; background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: var(--accent-ink);
  font-weight: 800; padding: 13px 10px; font-size: 13.5px;
  box-shadow: 0 6px 18px rgba(255, 107, 53, .4);
  transition: transform .1s, box-shadow .15s;
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 8px 22px rgba(255, 107, 53, .5); }
.btn-ghost {
  flex: 1; background: var(--panel-2); color: var(--text); border: 1px solid var(--line);
  padding: 13px 8px; font-weight: 700; font-size: 13px;
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent-2); }

/* ---------------- viewport ---------------- */
#view { flex: 1; min-width: 0; position: relative; background: var(--bg); }
#view canvas { display: block; }
#loading {
  position: absolute; inset: 0; display: grid; place-items: center;
  background: var(--bg); color: var(--muted); font-size: 14px; z-index: 5; transition: opacity .35s;
}
#loading.hide { opacity: 0; pointer-events: none; }
.toolbar { position: absolute; top: 14px; right: 16px; display: flex; gap: 8px; z-index: 3; }
.toolbar button {
  background: var(--panel); box-shadow: var(--shadow); border: 1px solid var(--line); color: var(--text);
  width: 40px; height: 40px; border-radius: 11px; display: grid; place-items: center; font-size: 17px;
}
.toolbar button:hover, .toolbar button.on { border-color: var(--accent); color: var(--accent-2); }

#hud { position: absolute; left: 16px; bottom: 16px; display: grid; gap: 8px; max-width: 330px; z-index: 3; }
#stats {
  background: rgba(27, 31, 38, .92); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 10px 14px; display: grid; gap: 5px; backdrop-filter: blur(6px);
}
.stat { display: flex; justify-content: space-between; gap: 18px; font-size: 12px; }
.stat span { color: var(--muted); }
.stat b { font-variant-numeric: tabular-nums; font-weight: 650; }
#warnings { display: grid; gap: 6px; }
#warnings.hidden { display: none; }
.warn {
  background: var(--warn-bg); color: var(--warn-ink); border: 1px solid #5a4413;
  border-radius: 10px; padding: 8px 12px; font-size: 12px; line-height: 1.45;
}
#status {
  position: absolute; bottom: 16px; right: 16px; color: var(--text); font-weight: 600; font-size: 12px;
  background: rgba(27, 31, 38, .92); border: 1px solid var(--line);
  box-shadow: var(--shadow); padding: 8px 14px; border-radius: 999px; z-index: 3;
}

/* ---------------- responsive ---------------- */
@media (max-width: 1023px) and (min-width: 769px) {
  #panel { width: 330px; min-width: 330px; }
  #actions { width: 330px; }
}
@media (max-width: 768px) {
  #app { flex-direction: column; height: 100vh; height: 100dvh; }
  #view { width: 100%; height: 36vh; min-height: 230px; max-height: 380px; order: 1; flex: 0 0 auto; }
  #panel {
    width: 100%; min-width: 0; flex: 1 1 auto; min-height: 0; order: 2;
    border-right: none; border-top: 1px solid var(--line);
  }
  #scroll { padding-bottom: 92px; }
  #actions {
    position: fixed; bottom: 0; left: 0; right: 0; width: 100%;
    background: var(--panel); border-top: 1px solid var(--line);
    padding: 10px 14px calc(10px + env(safe-area-inset-bottom)); z-index: 30;
  }
  #hud { max-width: 60vw; bottom: 12px; left: 12px; }
  #stats { padding: 8px 11px; }
  .stat { font-size: 11px; }
  #status { display: none; }
  .toolbar { top: 10px; right: 10px; }
  .toolbar button { width: 36px; height: 36px; }
}
@media (max-width: 380px) {
  .btn-primary, .btn-ghost { font-size: 12px; padding: 11px 6px; }
}