/* ══════════════════════════════════════════════════════
   FRAME — whispers over a 3D room
   plaster void · walnut booth · tiny lowercase mono
   ══════════════════════════════════════════════════════ */

:root{
  --plaster: #EAE2D1;
  --ink:     #26241E;
  --ink-soft:#6E6759;
  --olive:   #6B7147;
  --cream:   #F3EDDC;
  --paper:   #F7F2E4;
  --red:     #BE3A2B;
  --ok:      #2E6E4C;
  --warn:    #B77300;
  --rubylith: rgba(244, 128, 8, 0.5);
  --mono: "IBM Plex Mono", ui-monospace, monospace;
  --sans: "Archivo", system-ui, sans-serif;
}

*{ margin:0; padding:0; box-sizing:border-box; }
[hidden]{ display:none !important; }

html, body{ height:100%; }
body{
  background:
    radial-gradient(75% 50% at 50% 86%, rgba(196,188,172,.95) 0%, rgba(196,188,172,0) 64%),
    radial-gradient(60% 50% at 32% 30%, rgba(120,112,98,.25) 0%, transparent 70%),
    linear-gradient(180deg, #232127 0%, #302D30 32%, #5C574F 68%, #9A9284 100%);
  font-family: var(--mono);
  color: var(--ink);
  overflow:hidden;
}

#stage{ position:fixed; inset:0; }
#stage canvas{ display:block; }

.vignette{
  position:fixed; inset:0; pointer-events:none;
  background: radial-gradient(120% 90% at 50% 42%, transparent 58%, rgba(8,7,9,.26) 100%);
}

/* dragging highlight */
body.dragging::after{
  content:"let go";
  position:fixed; inset:0; z-index:20;
  display:grid; place-items:center;
  background: rgba(16,14,13,.55);
  backdrop-filter: blur(2px);
  font-family: var(--mono); font-size: 13px; letter-spacing:.4em;
  color: var(--cream);
  pointer-events:none;
}

/* ── whispers + physical controls ── */
.caption{
  position:fixed; left:50%; bottom: clamp(24px, 5.5vh, 52px); transform:translateX(-50%);
  z-index:10;
  display:flex; flex-direction:column; align-items:center; gap: 11px;
  max-width: 94vw;
  text-align:center;
  transition: opacity .26s ease;
}
.caption.fading{ opacity:0; }
.hint{
  font-size: 10px; letter-spacing:.2em; line-height:1.9;
  color:#CFC7B1;
  background: rgba(22,20,18,.55);
  backdrop-filter: blur(6px);
  padding: 6px 14px;
  border-radius: 999px;
}
.hint .quiet{ opacity:.65; }
.hint .dims{ color: var(--cream); }
.btnrow{
  display:flex; gap: 9px; flex-wrap:wrap; justify-content:center; align-items:center;
}

/* Braun keycap */
.btn{
  font-family: var(--mono); font-size: 10px; font-weight:600; letter-spacing:.16em;
  text-transform: lowercase;
  white-space: nowrap;
  color:#E8E0CB;
  background: linear-gradient(180deg, #4C4840, #34312B);
  border: 1px solid #16140F;
  border-radius: 8px;
  padding: 10px 16px;
  cursor:pointer;
  box-shadow:
    0 1px 0 rgba(255,244,214,.18) inset,
    0 -2px 0 rgba(0,0,0,.35) inset,
    0 2.5px 0 #1B1915,
    0 5px 10px rgba(0,0,0,.4);
  transition: transform .05s, box-shadow .05s, background .15s, color .15s;
}
.btn:hover{ background: linear-gradient(180deg, #575249, #3B372F); color: var(--cream); }
.btn:active{
  transform: translateY(2.5px);
  box-shadow:
    0 1px 0 rgba(255,244,214,.08) inset,
    0 2px 5px rgba(0,0,0,.55) inset,
    0 0 0 #1B1915,
    0 1px 3px rgba(0,0,0,.3);
}
.btn.primary{
  color:#221302;
  background: linear-gradient(180deg, #F7BC55, #DE9A2B);
  border-color:#6E4A00;
  box-shadow:
    0 1px 0 rgba(255,244,214,.5) inset,
    0 -2px 0 rgba(110,74,0,.45) inset,
    0 2.5px 0 #6E4A00,
    0 5px 12px rgba(222,154,43,.25);
}
.btn.primary:hover{ background: linear-gradient(180deg, #FFC968, #EAA636); }
.btn.primary:active{
  transform: translateY(2.5px);
  box-shadow:
    0 1px 4px rgba(110,74,0,.5) inset,
    0 0 0 #6E4A00,
    0 1px 3px rgba(0,0,0,.3);
}

/* segmented switch — the fit/fill selector */
.seg{
  display:inline-flex; gap: 3px;
  background: #1C1A15;
  border: 1px solid #0f0d0a;
  border-radius: 10px;
  padding: 3.5px;
  box-shadow: 0 2px 5px rgba(0,0,0,.55) inset, 0 1px 0 rgba(255,244,214,.07);
}
.seg .btn{
  background:none; border:none; border-radius: 7px;
  box-shadow:none;
  color:#8F8874;
  padding: 8px 13px;
}
.seg .btn:hover{ color:#CFC7B1; background: rgba(255,244,214,.05); }
.seg .btn:active{ transform:none; }
.seg .btn.on{
  background: linear-gradient(180deg, #4C4840, #34312B);
  color: var(--cream);
  box-shadow: 0 1px 0 rgba(255,244,214,.16) inset, 0 1px 3px rgba(0,0,0,.45);
}
.seg .btn.on::before{
  content:"";
  display:inline-block;
  width: 5px; height: 5px; border-radius:50%;
  margin-right: 7px;
  vertical-align: 1px;
  background: #E8A33C;
  box-shadow: 0 0 5px rgba(232,163,60,.8);
}

.masthead{
  position:fixed; top: clamp(18px, 3.6vh, 36px); left:50%; transform:translateX(-50%);
  z-index:10;
  text-align:center;
  pointer-events:none;
}
.wordmark{
  font-size: 12px; font-weight:400; letter-spacing:.42em; margin-right:-.42em;
  color: rgba(226,218,196,.6);
}
.subtitle{
  margin-top: 7px;
  font-size: 8.5px; letter-spacing:.24em;
  color: rgba(226,218,196,.34);
}
.visually-hidden{
  position:absolute; width:1px; height:1px; overflow:hidden;
  clip: rect(0 0 0 0); clip-path: inset(50%); white-space:nowrap;
}

.corner-link{
  position:fixed; right: 18px; bottom: 14px; z-index:10;
  background:none; border:none; cursor:pointer;
  font-family: var(--mono); font-size: 9px; letter-spacing:.16em;
  color: rgba(226,218,196,.3);
}
.corner-link:hover{ color: var(--cream); }

/* text-buttons */
.tlink{
  background:none; border:none; cursor:pointer;
  font-family: var(--mono); font-size: 11px; letter-spacing:.18em;
  color: var(--ink-soft);
  border-bottom: 1px dotted currentColor;
  padding: 0 0 1px;
  transition: color .2s;
}
.tlink:hover{ color: var(--ink); }
.tlink.strong{ color: var(--ink); border-bottom-style: solid; }
.tlink.strong:hover{ color: var(--olive); }

/* ── cards float in the void ── */
.card{
  position:fixed; z-index:10;
  left:50%; top:50%; transform: translate(-50%,-50%);
  text-align:center;
  animation: cardin .6s ease;
}
@keyframes cardin{ from{ opacity:0; transform: translate(-50%,-46%);} }

.card-title{ font-size: 10px; letter-spacing:.34em; color: var(--ink-soft); margin-bottom: 18px; }

.manual-card{
  background: rgba(20,18,14,.45);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(243,237,220,.18);
  border-radius: 10px;
  padding: 30px 40px;
}
.manual-card .card-title{ color:#C9C2AC; }
.manual-card .mrow{
  display:flex; align-items:center; gap: 14px; justify-content:center;
  color:#C9C2AC;
}
.manual-card input{
  width: 130px;
  font-family: var(--mono); font-weight:500; font-size: 22px; text-align:center;
  background:none;
  border:none; border-bottom: 1.5px solid rgba(243,237,220,.45);
  color: var(--cream);
  padding: 6px 2px;
}
.manual-card input:focus{ outline:none; border-bottom-color: #DDE3A9; }
.manual-card input::placeholder{ color: rgba(243,237,220,.3); }
.manual-card .tlink{ color:#C9C2AC; }
.manual-card .tlink:hover{ color: var(--cream); }
.manual-card .tlink.strong{ color: var(--cream); }
.manual-card .tlink.strong:hover{ color:#DDE3A9; }

.mactions{
  margin-top: 26px;
  display:flex; gap: 10px; justify-content:center; align-items:center; flex-wrap:wrap;
}

/* ratio card */
.ratio-card{
  color: var(--cream);
  max-width: min(92vw, 640px);
  background: rgba(20,18,14,.5);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(243,237,220,.16);
  border-radius: 12px;
  padding: clamp(26px, 4vw, 40px) clamp(28px, 5vw, 54px);
}
.r-big{
  font-family: var(--sans); font-weight:600;
  font-size: clamp(48px, 9vw, 92px);
  letter-spacing:.04em;
  color: var(--cream);
  text-shadow: 0 2px 30px rgba(0,0,0,.3);
}
.r-sub{ margin-top: 8px; font-size: 11px; letter-spacing:.14em; color:#D8D0BA; }
.ratio-card .tlink{ color:#C9C2AC; }
.ratio-card .tlink:hover{ color: var(--cream); }
.ratio-card .tlink.strong{ color: var(--cream); }
.ratio-card .tlink.strong:hover{ color: #DDE3A9; }

.mode-row{
  margin-top: 18px;
  display:flex; align-items:center; justify-content:center; gap: 12px;
}
.mode-label{
  font-size: 9px; letter-spacing:.24em;
  color: rgba(243,237,220,.45);
}

.machinery{
  margin-top: 24px;
  text-align:left;
  animation: cardin .4s ease;
}
.family-table{
  font-size: 11px;
  border: 1px solid rgba(243,237,220,.25);
  border-radius: 4px;
  max-height: 200px; overflow-y:auto;
  background: rgba(20,18,14,.35);
  backdrop-filter: blur(6px);
}
.frow{
  display:grid; grid-template-columns: 38px 1fr auto auto;
  gap: 10px; align-items:center;
  padding: 5.5px 12px;
  border-bottom: 1px solid rgba(243,237,220,.08);
  color:#C9C2AC;
}
.frow:last-child{ border-bottom:none; }
.frow.current{ background: rgba(243,237,220,.12); color: var(--cream); }
.fk{ opacity:.6; }
.fsafe{ color:#8FCA9F; font-size: 9px; letter-spacing:.08em; }
.fodd{ color:#D8907A; font-size: 9px; letter-spacing:.08em; }
.fclass{ color:#CBD189; font-size: 9px; letter-spacing:.12em; }
.custom{
  margin-top: 12px;
  display:flex; gap: 14px; align-items:center; flex-wrap:wrap;
}
.custom input{
  width: 220px;
  font-family: var(--mono); font-size: 12px;
  background:none; border:none; border-bottom: 1px solid rgba(243,237,220,.4);
  color: var(--cream);
  padding: 5px 2px;
}
.custom input:focus{ outline:none; border-bottom-color:#DDE3A9; }
.custom input::placeholder{ color: rgba(243,237,220,.35); }
#customOut{ font-size: 11px; color:#8FCA9F; letter-spacing:.05em; }
.footnote{ margin-top: 10px; font-size: 8.5px; letter-spacing:.08em; color: rgba(243,237,220,.45); }

/* about panel */
.about-card{
  color:#C9C2AC;
  max-width: min(92vw, 520px);
  max-height: 82vh;
  overflow-y: auto;
  background: rgba(20,18,14,.55);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(243,237,220,.16);
  border-radius: 12px;
  padding: clamp(24px, 4vw, 38px) clamp(24px, 4.5vw, 44px);
  text-align: left;
}
.about-title{
  font-family: var(--mono); font-weight:600;
  font-size: 11px; letter-spacing:.3em;
  color: var(--cream);
  margin-bottom: 18px;
  text-align:center;
}
.about-body h3{
  font-family: var(--mono); font-weight:600;
  font-size: 10px; letter-spacing:.18em;
  color:#DDE3A9;
  margin: 16px 0 6px;
}
.about-body p{
  font-size: 11px; line-height: 1.85; letter-spacing:.03em;
}
.about-body em{ font-style: normal; color: var(--cream); }
.about-body a{ color:#DDE3A9; }
.about-foot{
  margin-top: 18px;
  font-size: 9px; letter-spacing:.14em;
  color: rgba(201,194,172,.55);
}
.about-card > .btn{
  display:block; margin: 20px auto 0;
}

/* ── viewer (unchanged spirit) ── */
.viewer{
  position: fixed; inset: 0; z-index: 50;
  background: rgba(30, 28, 22, .97);
  display:flex; flex-direction:column;
}
.viewer-bar{
  display:flex; justify-content:space-between; align-items:center;
  padding: 14px clamp(14px, 3vw, 30px);
  border-bottom: 1px solid rgba(243,237,220,.15);
}
.viewer-title{ font-size: 11px; letter-spacing:.24em; color: var(--cream); }
.viewer-actions{ display:flex; gap: 10px; }
.v-btn{
  font-family: var(--mono); font-weight:500; font-size: 10px; letter-spacing:.14em;
  background: none; color: var(--cream);
  border: 1px solid rgba(243,237,220,.4);
  border-radius: 4px;
  padding: 8px 13px; cursor:pointer;
}
.v-btn:hover{ border-color: var(--cream); background: rgba(243,237,220,.08); }
.viewer-scroll{ flex:1; overflow-y:auto; scroll-snap-type: y mandatory; }
.vframe{
  min-height: calc(100vh - 60px);
  scroll-snap-align: start;
  display:flex; flex-direction:column; align-items:center; justify-content:center;
  gap: 16px;
  padding: 26px clamp(14px, 4vw, 40px);
}
.vphoto{
  position:relative;
  background:#17150F;
  border: 8px solid var(--paper);
  box-shadow: 0 20px 50px rgba(0,0,0,.6);
  overflow:hidden;
}
.vpic{
  position:absolute;
  background: center / cover no-repeat;
}
.vpic.testpattern{ background: repeating-linear-gradient(45deg, #d3ccb8 0 12px, #c2b9a1 12px 24px); }
.tp-label{
  position:absolute; inset:0; display:grid; place-items:center;
  font-family: var(--mono); font-weight:600; font-size: 13px; color:#4a4436;
}
.zone{
  position:absolute;
  /* Braun speaker-grille plate: perforation dots (ink shadow under
     warm dot) over the faintest smoked wash */
  background:
    radial-gradient(circle 1.1px at 2.4px 2.4px, rgba(255,214,150,.9) 98%, transparent),
    radial-gradient(circle 1.5px at 3.1px 3.1px, rgba(16,9,0,.75) 98%, transparent),
    rgba(244,150,40,.13);
  background-size: 8px 8px, 8px 8px, auto;
  border: 1.5px solid #F0A93E;
  border-radius: 4px;
  box-shadow: 1.2px 1.2px 0 rgba(16,9,0,.65);
}
.zone i{
  position:absolute; left:6px; top:6px;
  font-style:normal; font-family: var(--mono); font-size: 8.5px; font-weight:600; letter-spacing:.12em;
  text-transform: lowercase;
  color:#F5C270;
  background: rgba(22,13,3,.92);
  padding: 3px 7px;
  border-radius: 3px;
  white-space:nowrap;
}
.zone i.vert{
  writing-mode: vertical-rl;
  padding: 7px 3px;
}
.vname{
  font-family: var(--sans); font-weight:600; letter-spacing:.3em; font-size: 13px;
  color: var(--cream);
  display:flex; align-items:center; gap: 10px; justify-content:center;
}
.vstamp{
  font-family: var(--mono); font-size: 9px; font-weight:600; letter-spacing:.12em;
  padding: 2px 7px; border-radius: 2px;
  border: 1px solid currentColor;
  transform: rotate(-2deg);
}
.vstamp.ok{ color:#7FC79B; } .vstamp.warn{ color:#E0A94A; } .vstamp.bad{ color:#E07A63; }
.vinfo{
  max-width: 560px; text-align:center;
  font-size: 11px; line-height: 1.8; letter-spacing:.04em;
  color:#C9C2AC;
}
.vinfo b{ color: var(--cream); }

/* flash */
.flash{ position:fixed; inset:0; background:#fff; opacity:0; pointer-events:none; z-index:99; }
.flash.fire{ animation: flashfire .5s ease-out; }
@keyframes flashfire{ 0%{opacity:0} 14%{opacity:.95} 100%{opacity:0} }

.shake{ animation: shake .4s; }
@keyframes shake{ 25%{transform:translate(-50%,-50%) translateX(-6px)} 50%{transform:translate(-50%,-50%) translateX(5px)} 75%{transform:translate(-50%,-50%) translateX(-3px)} }

@media (max-width: 640px){
  .hint{ font-size: 9px; letter-spacing:.14em; }
  .btn{ font-size: 9.5px; letter-spacing:.1em; padding: 9px 12px; }
  .seg .btn{ padding: 8px 10px; }
  .btnrow{ gap: 7px; }
  .mactions{ gap: 8px; }
}