/* ============================================================
   Personify — Design System
   Tokens + component primitives. See docs/DESIGN_LANGUAGE.md
   Import BEFORE app.css:
     <link rel="stylesheet" href="/styles/design-system.css">
     <link rel="stylesheet" href="/styles/app.css">
   Fonts:
     <link href="https://fonts.googleapis.com/css2?family=Archivo:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500&display=swap" rel="stylesheet">
   ============================================================ */

:root{
  /* color */
  --bone:#EFEDE7;
  --panel:#FBFAF8;
  --ink:#161A18;
  --ink-70:rgba(22,26,24,.70);
  --ink-45:rgba(22,26,24,.45);
  --rule:#DCD8CF;
  --pine:#1E5B48;
  --pine-tint:rgba(30,91,72,.10);

  /* surfaces */
  --surface:#fff;
  --surface-hover:#F3F1EC;
  --surface-press:#F0EEE9;

  /* geometry */
  --r:10px;
  --r-inner:8px;
  --r-sheet:14px;
  --tap:46px;

  /* type */
  --font-ui:'Archivo',system-ui,-apple-system,sans-serif;
  --font-mono:'IBM Plex Mono',ui-monospace,monospace;

  /* depth */
  --sh-rest:0 1px 0 rgba(22,26,24,.03);
  --sh-raise:0 1px 2px rgba(22,26,24,.05), 0 8px 24px -12px rgba(22,26,24,.18);
  --sh-solid:inset 0 1px 0 rgba(255,255,255,.14), 0 1px 2px rgba(22,26,24,.10);

  /* motion */
  --ease-move:cubic-bezier(.2,.7,.3,1);
  --ease-knob:cubic-bezier(.3,.8,.3,1);
}

*,*::before,*::after{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
body{
  margin:0;background:var(--bone);color:var(--ink);
  font-family:var(--font-ui);font-size:15px;-webkit-font-smoothing:antialiased;
  overscroll-behavior:none;
}
:focus-visible{outline:2px solid var(--pine);outline-offset:2px}

/* ── shell ───────────────────────────────────────────────── */
.app{
  width:100%;max-width:440px;height:100dvh;margin:0 auto;
  display:flex;flex-direction:column;background:var(--panel);
  border-left:1px solid var(--rule);border-right:1px solid var(--rule);
}
.controls{
  flex:1;overflow-y:auto;-webkit-overflow-scrolling:touch;
  padding:16px 18px 10px;display:flex;flex-direction:column;gap:18px;
}
.group{position:relative;display:flex;flex-direction:column;gap:11px}

/* ── section titles / breaks ──────────────────────────────
   The eyebrow row IS the divider. No <hr>, no borders on .group. */
.eyebrow{
  font-family:var(--font-mono);font-size:10px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--ink-45);display:flex;align-items:center;gap:9px;
}
.eyebrow .rule{flex:1;height:1px;background:var(--rule)}
.mono{font-family:var(--font-mono);font-size:11px;letter-spacing:.06em}

/* dev-only section badges (S0…S6) — gated on body.annotate */
.sec{
  font-family:var(--font-mono);font-size:9px;letter-spacing:.1em;font-style:normal;flex:none;
  color:var(--pine);background:var(--pine-tint);border-radius:3px;padding:2px 5px;display:none;
}
body.annotate .sec{display:inline-block}
.sec.float{position:absolute;top:8px;right:10px;z-index:5}

/* ── S0 header ───────────────────────────────────────────── */
.bar{
  position:relative;flex:none;display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:calc(12px + env(safe-area-inset-top)) 18px 12px;border-bottom:1px solid var(--rule);
}
.bar h1{margin:0;font-size:16px;font-weight:600;letter-spacing:-.01em}

/* ── S1 stage (clean — no rails, brackets, or readouts) ──── */
.stage{
  flex:0 0 40%;min-height:240px;position:relative;display:grid;place-items:center;overflow:hidden;
  background:radial-gradient(120% 90% at 50% 0%, #F8F7F4 0%, #EDEAE4 74%, #E4E0D8 100%);
  border-bottom:1px solid var(--rule);touch-action:none;
}
.caddy{
  position:relative;width:min(33vh,244px);aspect-ratio:1;border-radius:22%;padding:5.5%;
  background:linear-gradient(165deg,#3B403D,#1E2221 55%,#141716);
  filter:drop-shadow(0 16px 28px rgba(22,26,24,.26));
}
.face{
  position:absolute;inset:5.5%;border-radius:17%;overflow:hidden;background:var(--bg,#8E9A93);
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.10);
}
.layer{
  position:absolute;left:50%;top:50%;translate:-50% -50%;touch-action:none;
  transition:width .2s var(--ease-move), left .22s var(--ease-move), top .22s var(--ease-move);
}
.layer img,.layer svg{width:100%;height:auto;display:block;pointer-events:none;user-select:none}
.layer:not(.active){pointer-events:none}
/* outline shows only while dragging, then disappears */
.layer::after{
  content:"";position:absolute;inset:-7px;border:1px solid rgba(255,255,255,.9);border-radius:4px;
  box-shadow:0 0 0 1px rgba(0,0,0,.22);opacity:0;transition:opacity .16s;
}
.layer.grabbing::after{opacity:1}
.empty{position:absolute;inset:0;display:grid;place-items:center;text-align:center;color:rgba(255,255,255,.92)}
.empty strong{display:block;font-size:14px;font-weight:600}
.empty span{font-size:12px;opacity:.72}

/* ── S2 segmented control (sets state, never performs an action) ── */
.seg{
  display:grid;grid-auto-flow:column;grid-auto-columns:1fr;gap:1px;background:var(--rule);
  border:1px solid var(--rule);border-radius:var(--r);overflow:hidden;
}
.seg button{
  min-height:var(--tap);border:0;background:var(--surface);font:inherit;font-size:14px;font-weight:500;
  color:var(--ink-70);cursor:pointer;transition:background .15s,color .15s;
}
.seg button[aria-pressed="true"]{background:var(--ink);color:#F5F4F0}

/* ── S3 artwork tray ─────────────────────────────────────── */
.tray{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.tile{
  background:var(--surface);border:1px solid var(--rule);border-radius:var(--r);cursor:pointer;font:inherit;
  padding:11px 6px 10px;display:flex;flex-direction:column;align-items:center;gap:7px;min-height:70px;
  box-shadow:var(--sh-rest);transition:background .14s,transform .06s;
}
.tile:active{transform:translateY(1px);background:var(--surface-press)}
.tile svg{width:19px;height:19px;stroke:var(--ink);stroke-width:1.5;fill:none;opacity:.8}
.tile span{font-size:12px;font-weight:500;line-height:1.15;text-align:center}
.tile.danger svg,.tile.danger span{opacity:.55}   /* never red */
.tile[disabled]{opacity:.4;pointer-events:none}

/* ── S4 panels ───────────────────────────────────────────── */
.panel{border:1px solid var(--rule);border-radius:var(--r);background:var(--surface);padding:16px}
.panel[hidden]{display:none}

/* S4-B transform */
.row2{display:grid;grid-template-columns:auto 1fr;gap:16px;align-items:center}
.pad{
  display:grid;grid-template-columns:repeat(3,42px);grid-template-rows:repeat(3,42px);gap:1px;
  background:var(--rule);border:1px solid var(--rule);border-radius:var(--r-inner);overflow:hidden;
}
.pad button{background:var(--surface);border:0;cursor:pointer;display:grid;place-items:center;transition:background .12s}
.pad button::before{content:"";width:5px;height:5px;border-radius:50%;background:#C4BFB4;transition:.15s}
.pad button:active{background:var(--surface-press)}
.pad button[aria-pressed="true"]{background:var(--pine)}
.pad button[aria-pressed="true"]::before{background:#fff;width:7px;height:7px}

.sliderwrap{display:flex;flex-direction:column;gap:2px;min-width:0}
.sliderhead{display:flex;justify-content:space-between;color:var(--ink-45)}
.slider{-webkit-appearance:none;appearance:none;width:100%;height:40px;background:transparent;cursor:pointer;position:relative;z-index:1}
.slider::-webkit-slider-runnable-track{height:2px;background:var(--rule);border-radius:2px}
.slider::-moz-range-track{height:2px;background:var(--rule);border-radius:2px}
.slider::-webkit-slider-thumb{
  -webkit-appearance:none;width:22px;height:22px;margin-top:-10px;border-radius:50%;
  background:linear-gradient(180deg,#fff,#E9E6DF);border:1px solid #B9B4A8;
  box-shadow:0 1px 3px rgba(22,26,24,.28);
}
.slider::-moz-range-thumb{
  width:22px;height:22px;border-radius:50%;
  background:linear-gradient(180deg,#fff,#E9E6DF);border:1px solid #B9B4A8;
  box-shadow:0 1px 3px rgba(22,26,24,.28);
}
.slider[disabled]{opacity:.4;pointer-events:none}

/* S4-A palette — HSV wheel. No swatches, no input[type=color]. */
.wheelwrap{display:grid;place-items:center;padding:2px 0 6px}
.wheel{
  position:relative;width:min(58vw,196px);aspect-ratio:1;border-radius:50%;
  touch-action:none;cursor:crosshair;
  background:
    radial-gradient(circle at center, #fff 0%, rgba(255,255,255,.92) 12%, rgba(255,255,255,0) 72%),
    conic-gradient(from 0deg, #ff0000,#ffff00,#00ff00,#00ffff,#0000ff,#ff00ff,#ff0000);
  box-shadow:0 1px 3px rgba(22,26,24,.18), inset 0 0 0 1px rgba(22,26,24,.10);
}
.wheel .shade{position:absolute;inset:0;border-radius:50%;background:#000;opacity:0;pointer-events:none}
.wknob{
  position:absolute;width:26px;height:26px;border-radius:50%;translate:-50% -50%;pointer-events:none;
  border:3px solid #fff;background:var(--c,#8E9A93);
  box-shadow:0 1px 4px rgba(0,0,0,.35), inset 0 0 0 1px rgba(0,0,0,.25);
}
.vwrap{position:relative;margin-top:2px}
.vtrack{
  position:absolute;left:0;right:0;top:17px;height:6px;border-radius:3px;pointer-events:none;
  background:linear-gradient(90deg,#000,var(--hue,#8E9A93));
  box-shadow:inset 0 0 0 1px rgba(22,26,24,.12);
}
.vwrap .slider::-webkit-slider-runnable-track{background:transparent}
.vwrap .slider::-moz-range-track{background:transparent}

.hexrow{display:flex;align-items:center;gap:10px;border-top:1px solid var(--rule);margin-top:8px;padding-top:14px}
.chip{width:38px;height:38px;border-radius:50%;flex:none;border:1px solid rgba(22,26,24,.14);background:var(--c,#8E9A93)}
.hexfield{
  flex:1;display:flex;align-items:center;gap:9px;border:1px solid var(--rule);
  border-radius:var(--r-inner);padding:0 12px;min-height:var(--tap);
}
.hexfield label{color:var(--ink-45);font-family:var(--font-mono);font-size:11px;letter-spacing:.1em}
.hexfield input{
  border:0;outline:0;width:100%;background:transparent;color:var(--ink);
  font-family:var(--font-mono);font-size:14px;text-transform:uppercase;letter-spacing:.04em;
}
.hexfield:focus-within{border-color:var(--pine)}

/* ── S5 options ──────────────────────────────────────────── */
.opts{border:1px solid var(--rule);border-radius:var(--r);background:var(--surface);padding:2px 14px}
.opts .toggle + .toggle{border-top:1px solid var(--rule)}
.toggle{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  min-height:44px;cursor:pointer;user-select:none;font-size:14px;
}
.toggle input{position:absolute;opacity:0;width:0;height:0}
.track{width:44px;height:26px;border-radius:999px;background:#D6D2C8;position:relative;transition:background .18s;flex:none}
.knob{
  position:absolute;top:3px;left:3px;width:20px;height:20px;border-radius:50%;background:#fff;
  box-shadow:0 1px 3px rgba(0,0,0,.28);transition:transform .18s var(--ease-knob);
}
.toggle input:checked + .track{background:var(--pine)}
.toggle input:checked + .track .knob{transform:translateX(18px)}
.toggle input:focus-visible + .track{outline:2px solid var(--pine);outline-offset:2px}
.toggle input[disabled] ~ *{opacity:.4}

/* ── S6 action bar ───────────────────────────────────────── */
.actions{
  position:relative;flex:none;border-top:1px solid var(--rule);background:var(--panel);
  padding:12px 18px calc(10px + env(safe-area-inset-bottom));
  display:flex;flex-direction:column;gap:6px;
}
.actions .trio{display:grid;grid-template-columns:1fr 1fr 1.3fr;gap:9px}

/* ── buttons ─────────────────────────────────────────────── */
.btn{
  font:inherit;font-size:14px;font-weight:500;color:var(--ink);background:var(--surface);
  border:1px solid var(--rule);border-radius:var(--r);min-height:var(--tap);padding:0 14px;
  cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:8px;
  box-shadow:var(--sh-rest);transition:background .14s,border-color .14s,transform .06s;
}
.btn:active{transform:translateY(1px);background:var(--surface-press)}
.btn.solid{background:var(--ink);color:#F5F4F0;border-color:var(--ink);box-shadow:var(--sh-solid)}
.btn.solid:active{background:#20251F}
.btn.ghost{background:transparent;border-color:transparent;color:var(--ink-45);min-height:40px}
.btn.ghost:active{background:var(--surface-press)}
.btn.wide{width:100%}

/* hover is desktop-only — never fires a hover style on touch */
@media (hover:hover) and (pointer:fine){
  .btn:hover{background:var(--surface-hover);border-color:#C9C4B9}
  .btn.solid:hover{background:#20251F;border-color:#20251F}
  .btn.ghost:hover{background:var(--surface-press);color:var(--ink)}
  .tile:hover{background:var(--surface-hover)}
  .seg button:not([aria-pressed="true"]):hover{background:var(--surface-hover)}
  .pad button:not([aria-pressed="true"]):hover{background:var(--surface-hover)}
  .pad button:not([aria-pressed="true"]):hover::before{background:var(--ink-45);transform:scale(1.3)}
}

/* disabled — must be explainable; if the reason isn't obvious, show it instead */
.btn[disabled],.btn[aria-disabled="true"]{opacity:.4;pointer-events:none;box-shadow:none}

/* busy — label swaps to present participle ("Saving"), width locked to avoid reflow */
.btn.is-busy{pointer-events:none;color:var(--ink-45)}
.btn.solid.is-busy{color:rgba(245,244,240,.6)}

/* ── toast ───────────────────────────────────────────────── */
.toast{
  position:fixed;left:50%;bottom:calc(96px + env(safe-area-inset-bottom));translate:-50% 8px;
  z-index:60;max-width:calc(100% - 44px);
  background:var(--ink);color:#F5F4F0;font-size:13px;font-weight:500;
  padding:11px 16px;border-radius:var(--r);box-shadow:var(--sh-raise);
  opacity:0;pointer-events:none;transition:opacity .16s,translate .18s var(--ease-move);
}
.toast.on{opacity:1;translate:-50% 0}

/* ── sheet (reserved: logo library / confirmations) ───────── */
.sheet{
  position:fixed;inset:0;z-index:70;display:none;
  background:var(--panel);border-radius:var(--r-sheet) var(--r-sheet) 0 0;
  flex-direction:column;translate:0 100%;transition:translate .22s var(--ease-move);
}
.sheet.on{display:flex;translate:0 0}
.sheet-head{
  flex:none;display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:calc(14px + env(safe-area-inset-top)) 18px 12px;border-bottom:1px solid var(--rule);
}
.sheet-head h2{margin:0;font-size:16px;font-weight:600;letter-spacing:-.01em}
.sheet-body{flex:1;overflow-y:auto;padding:16px 18px calc(18px + env(safe-area-inset-bottom))}

/* ── preview overlay ─────────────────────────────────────── */
.overlay{
  position:fixed;inset:0;z-index:50;display:none;place-items:center;
  background:radial-gradient(120% 90% at 50% 20%, #F8F7F4 0%, #E9E6DF 78%, #DFDBD2 100%);
}
.overlay.on{display:grid}
.overlay .caddy{width:min(74vw,340px)}
.overlay .done{position:absolute;bottom:calc(28px + env(safe-area-inset-bottom));left:50%;translate:-50% 0}

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