/* DMS Sweep — layout and components.
   Port of the Fastgraph artboard (design/build_mocks.py → F_CSS, build_f()).
   Surfaces, buttons, fields and the segmented control follow DMS Fastgraph. */

*, *::before, *::after { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--ui);
  font-size: 13px;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  padding: 0;
  margin: 0;
  cursor: pointer;
}

svg { display: block; }
svg[hidden] { display: none; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.sr {
  position: absolute; width: 1px; height: 1px;
  margin: -1px; padding: 0; border: 0;
  overflow: hidden; clip: rect(0 0 0 0); clip-path: inset(50%);
  white-space: nowrap;
}

/* ---------------------------------------------------------------- page ---- */

.page {
  max-width: 1440px;
  min-width: 1100px;
  min-height: 100vh;
  margin: 0 auto;
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: var(--bg);
}

.sp { flex: 1 1 auto; }

/* --------------------------------------------------------- type helpers ---- */

.cap { font-size: 11px; color: var(--muted); }
.section { font-size: 15px; font-weight: 600; }
.screen { font-size: 20px; font-weight: 700; }
.tech { font-family: var(--tech); }

.lab { font-size: 13px; color: var(--text); white-space: nowrap; }
.lab.m { color: var(--muted); }
.lab.a { color: var(--accent); font-weight: 600; }
.gap-l { margin-left: 6px; }

.hint {
  font-size: 12px;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ------------------------------------------------------------ surfaces ---- */

.viewport { background: var(--viewport); border: 1px solid var(--border); border-radius: 12px; }
.panel { background: var(--panel); border: 1px solid var(--border); border-radius: 12px; }
.raised { background: var(--raised); border: 1px solid var(--border); border-radius: 12px; }

/* ---------------------------------------------------- ModernButton (.fgb) ---
   surround ring → recessed well → face with a radial accent glow that rises
   on hover (dms/ui/modern_button.py). */

.fgb {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 32px;
  padding: 0 18px;
  box-sizing: border-box;
  border-radius: 12px;
  cursor: pointer;
  font-family: var(--ui);
  font-weight: 600;
  font-size: 13px;
  white-space: nowrap;
  text-decoration: none;
  color: color-mix(in srgb, var(--text) 70%, var(--accent));
  background:
    radial-gradient(ellipse 50% 50% at 50% 105%,
      color-mix(in srgb, var(--accent) 30%, transparent) 0%,
      color-mix(in srgb, var(--accent) 13%, transparent) 48%,
      transparent 92%),
    var(--btn-face);
  border: 1px solid color-mix(in srgb, var(--btn-edge) 87%, var(--accent));
  box-shadow:
    0 0 0 2px var(--btn-well-a),
    0 0 0 3px var(--btn-well-b),
    0 0 0 5px var(--btn-ring);
  margin: 5px;
  transition: color 160ms ease-out, border-color 160ms ease-out;
}
.fgb::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  opacity: 0;
  transition: opacity 160ms ease-out;
  pointer-events: none;
  background: radial-gradient(ellipse 98% 98% at 50% 78%,
    color-mix(in srgb, var(--accent) 42%, transparent) 0%,
    color-mix(in srgb, var(--accent) 27%, transparent) 48%,
    color-mix(in srgb, var(--accent) 4%, transparent) 88%,
    transparent 100%);
}
.fgb > * { position: relative; z-index: 1; }
.fgb:hover {
  color: color-mix(in srgb, var(--text) 54%, var(--accent));
  border-color: color-mix(in srgb, var(--btn-edge) 65%, var(--accent));
}
.fgb:hover::after { opacity: 1; }

.fgb.primary {
  height: 36px;
  box-shadow:
    0 0 0 2px var(--btn-well-a),
    0 0 0 3px var(--btn-well-b),
    0 0 0 5px var(--btn-ring),
    0 0 0 6.5px var(--accent);
}
.fgb.compact { height: 26px; padding: 0 12px; border-radius: 13px; font-size: 12px; }
.fgb.compact.icon { padding: 0 10px; }
.fgb.danger { --accent: var(--danger); }
.fgb.positive { --accent: var(--positive); }
.fgb.warning { --accent: var(--warning); }
.fgb.ghost { color: var(--muted); }
.fgb.on { color: color-mix(in srgb, var(--text) 54%, var(--accent)); }
.fgb.on::after { opacity: 1; }
.fgb[hidden] { display: none; }

/* ------------------------------------------------- segmented control ------- */

.seg { display: inline-flex; }
.seg button {
  height: 26px;
  padding: 0 14px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--control);
  color: var(--muted);
  border: 1px solid var(--border);
  border-right: 0;
  font-weight: 500;
  font-size: 12.5px;
  white-space: nowrap;
  transition: background 160ms ease-out, color 160ms ease-out, border-color 160ms ease-out;
}
.seg button:first-child { border-radius: 12px 0 0 12px; }
.seg button:last-child { border-radius: 0 12px 12px 0; border-right: 1px solid var(--border); }
.seg button:hover { background: var(--control-hover); color: var(--text); }
.seg button.set { color: var(--text); background: var(--selected); }
.seg button.on {
  background: var(--accent);
  color: var(--bg);
  border-color: var(--accent);
  font-weight: 600;
}
.seg button kbd { font-family: var(--tech); font-size: 11px; opacity: 0.8; }
.seg button .tech { font-size: 12.5px; }

/* ------------------------------------------------------------- toggles ---- */

.tg {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--text);
  white-space: nowrap;
}
.tg i {
  width: 44px; height: 22px; border-radius: 11px;
  background: var(--viewport);
  border: 1px solid var(--border);
  position: relative;
  display: inline-block;
  flex: none;
  transition: border-color 160ms ease-out;
}
.tg i::after {
  content: "";
  position: absolute;
  top: 3px; left: 3px;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--muted);
  transition: background 160ms ease-out;
}
.tg.on i,
.tg[aria-checked="true"] i { border-color: var(--accent); }
.tg.on i::after,
.tg[aria-checked="true"] i::after { left: auto; right: 3px; background: var(--accent); }

/* peak / dip: only the active word shows */
#kindPeak, #kindDip { font-weight: 500; display: none; }
#kindPeak.act, #kindDip.act { display: inline; }

/* -------------------------------------------------------------- fields ---- */

.fld {
  display: inline-flex;
  align-items: center;
  height: 30px;
  padding: 0 8px 0 10px;
  box-sizing: border-box;
  background: var(--raised);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 13px;
  gap: 8px;
  min-width: 0;
}
.fld i { font-style: normal; font-size: 12px; color: var(--muted); }
.fld.big {
  height: 36px;
  font-size: 15px;
  font-weight: 700;
  color: var(--accent);
  min-width: 116px;
  font-variant-numeric: tabular-nums;
}
.fld.big i { font-size: 12px; font-weight: 500; }
.fld.big #readout { flex: 1 1 auto; }

.arrows {
  display: flex;
  flex-direction: column;
  gap: 2px;
  color: var(--accent);
  margin-left: auto;
  flex: none;
}
.arrows button {
  display: block;
  line-height: 0;
  color: inherit;
  opacity: 0.85;
}
.arrows button:hover { opacity: 1; }

/* text-like number inputs; native spinners hidden, chevrons drawn instead */
.inp {
  font: inherit;
  font-family: var(--tech);
  font-variant-numeric: tabular-nums;
  color: var(--text);
  background: transparent;
  border: 0;
  border-radius: 0;
  padding: 0;
  margin: 0;
  min-width: 0;
  text-align: left;
  -moz-appearance: textfield;
  appearance: textfield;
}
.inp::-webkit-outer-spin-button,
.inp::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.inp:focus { outline: none; }
.fld:focus-within { border-color: var(--accent); }
.inp.w-level { width: 34px; }
.inp.w-preamp { width: 56px; }
.inp.w-fc { width: 100%; }
.inp.w-gain { width: 100%; }
.inp.w-q { width: 100%; }

/* native select, drawn inside a .fld */
.sel {
  font-family: var(--ui);
  font-size: 12.5px;
  color: var(--text);
  background: transparent;
  border: 0;
  border-radius: 0;
  padding: 0;
  margin: 0;
  width: 100%;
  min-width: 0;
  -webkit-appearance: none;
  appearance: none;
  cursor: pointer;
}
.sel:focus { outline: none; }
.chev { color: var(--accent); flex: none; display: block; }

/* ---------------------------------------------------------------- rows ---- */

.bar { display: flex; align-items: center; gap: 12px; height: 44px; }

.brand { display: flex; align-items: center; gap: 10px; margin-right: 6px; }
.mark {
  width: 34px; height: 34px; border-radius: 50%;
  background: #000;
  border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  flex: none;
}
.mark img { height: 19px; width: auto; display: block; }

.ctl { display: flex; align-items: center; gap: 12px; height: 46px; }

:root .ico-sun { display: none; }
:root[data-theme="dark"] .ico-sun { display: block; }
:root[data-theme="dark"] .ico-moon { display: none; }

/* ------------------------------------------------------------ viewports ---- */

.vp-title {
  text-align: center;
  font-size: 12.5px;
  color: var(--muted);
  padding: 6px 0 4px;
}

.vp-sweep { display: flex; flex-direction: column; height: 112px; flex: none; }
.tapewrap { padding: 0 18px; flex: 1 1 auto; min-height: 0; display: flex; }
#tape {
  display: block;
  width: 100%; height: 100%;
  min-height: 76px;
  background: var(--plot-bg);
  cursor: ew-resize;
  touch-action: none;
}

.vp-graph {
  display: flex;
  flex-direction: column;
  flex: 1 1 auto;
  min-height: 355px;
}
.plotwrap {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  grid-template-rows: minmax(0, 1fr) 22px;
  padding: 0 12px 6px 6px;
  flex: 1 1 auto;
  min-height: 0;
}
.ylab {
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  text-align: center;
  font-size: 12.5px;
  color: var(--plot-fg);
}
.xlab {
  grid-column: 2;
  text-align: center;
  font-size: 12.5px;
  color: var(--plot-fg);
  padding-top: 4px;
}
.plot {
  border: 1px solid var(--plot-grid);
  overflow: hidden;
  background: var(--plot-bg);
  min-height: 300px;
  display: flex;
}
#graph { display: block; width: 100%; height: 100%; }

/* -------------------------------------------------------- bottom panels ---- */

.bottom {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(480px, 560px);
  gap: 10px;
  flex: 0 0 auto;
  min-height: 226px;
}

.gb { position: relative; padding: 20px 14px 12px; min-width: 0; }
.gb-title {
  position: absolute;
  top: -9px; left: 12px;
  padding: 0 5px;
  background: var(--panel);
  font-size: 15px;
  font-weight: 600;
  color: var(--muted);
}
.gb.col { display: flex; flex-direction: column; gap: 8px; }

.prewrap { display: flex; flex: 1 1 auto; min-height: 0; }
.pre {
  margin: 0;
  padding: 10px 12px;
  font-family: var(--tech);
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--text);
  white-space: pre;
  overflow: auto;
  flex: 1 1 auto;
}

.erow { display: flex; align-items: center; gap: 2px; flex: none; }
.erow .lab { margin-right: 6px; }
.erow .fld { margin-right: 6px; }

/* ---------------------------------------------------------- band rows ---- */

.list { display: flex; flex-direction: column; gap: 0; }

.band {
  display: grid;
  grid-template-columns:
    24px minmax(0, 130px) minmax(0, 120px) minmax(0, 112px) minmax(0, 96px) 56px 24px;
  align-items: center;
  gap: 12px;
  height: 44px;
  color: var(--text);
  font-size: 13px;
}
.band .n { font-family: var(--tech); font-size: 13px; color: var(--muted); }
.band.cur .n { color: var(--accent); font-weight: 600; }
.band .fld { height: 32px; font-family: var(--tech); font-size: 13px; white-space: nowrap; }
.band .fld .sel { font-family: var(--ui); }
.band.off .inp,
.band.off .sel,
.band.off .fld i { color: var(--disabled); }

.band.empty {
  grid-template-columns: 24px minmax(0, 1fr);
  color: var(--disabled);
  font-size: 12.5px;
}

/* enable switch — the .tg pill at band scale */
.sw {
  width: 44px; height: 22px; border-radius: 11px;
  background: var(--viewport);
  border: 1px solid var(--border);
  position: relative;
  flex: none;
  transition: border-color 160ms ease-out;
}
.sw::after {
  content: "";
  position: absolute;
  top: 2px; left: 2px;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--muted);
  transition: background 160ms ease-out;
}
.sw[aria-checked="true"] { border-color: var(--accent); }
.sw[aria-checked="true"]::after { left: auto; right: 2px; background: var(--accent); }

.del {
  display: inline-flex; align-items: center; justify-content: center;
  width: 24px; height: 24px;
  color: var(--danger);
  font-weight: 700;
  opacity: 0.8;
}
.del:hover { opacity: 1; }

/* --------------------------------------------------------------- status ---- */

.status {
  display: flex;
  align-items: center;
  gap: 14px;
  height: 34px;
  flex: none;
  border-top: 1px solid var(--border);
  padding-top: 6px;
  font-size: 13px;
  color: var(--text);
}
.ver { color: var(--muted); }
.saved { color: var(--muted); opacity: 0; transition: opacity 160ms ease-out; }
.saved.on { opacity: 1; }

/* ----------------------------------------------------------------- gate ---- */

.gate {
  position: fixed;
  inset: 0;
  z-index: 20;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
}
.gate[hidden] { display: none; }

.gate-in {
  width: 520px;
  padding: 22px 24px 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.gate-head { display: flex; align-items: center; gap: 14px; }
.gate .mark { width: 44px; height: 44px; }
.gate .mark img { height: 24px; }
.gate p { margin: 0; font-size: 13.5px; line-height: 1.55; color: var(--muted); }
.gate-foot {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}
#gateLevelOut { font-size: 13px; color: var(--text); font-variant-numeric: tabular-nums; }

/* range slider with an accent thumb */
.rng {
  -webkit-appearance: none;
  appearance: none;
  width: 160px;
  height: 16px;
  background: transparent;
  margin: 0;
  cursor: pointer;
}
.rng::-webkit-slider-runnable-track { height: 4px; border-radius: 2px; background: var(--control); }
.rng::-moz-range-track { height: 4px; border-radius: 2px; background: var(--control); }
.rng::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--accent);
  border: 0;
  margin-top: -5px;
}
.rng::-moz-range-thumb {
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--accent);
  border: 0;
}

/* ------------------------------------------------- gear (affiliate links) ---- */

.gear { flex: none; }
.gear[hidden] { display: none; }
.gear-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px 24px; }
.gear-item {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 10px 0;
  color: var(--text);
  text-decoration: none;
}
.gear-item b { font-weight: 600; font-size: 13.5px; }
.gear-item span { font-size: 12.5px; color: var(--muted); }
.gear-item:hover b { color: var(--accent); }

/* --------------------------------------------------------------- motion ---- */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
}

/* preamp field: wide enough for "-12.0" */
#preamp.inp { width: 50px; flex: 0 0 50px; }
.erow .fld:has(#preamp) { flex: 0 0 auto; }