:root{
  --bg:#FFFFFF;
  --ink:#0A0A0A;
  --ink-soft:#6E6E6E;
  --line:#E4E4E4;
  --surface:#F4F4F4;
}
*{box-sizing:border-box;}
body{
  margin:0;
  background:#EDEDED;
  font-family:'Inter',sans-serif;
  color:var(--ink);
}
.lab{padding:32px 20px 60px;}
.lab-header{text-align:center;margin-bottom:28px;}
.lab-title{
  font-family:'Fraunces',serif;font-weight:500;font-size:26px;margin:0 0 4px;
}
.lab-sub{font-size:13.5px;color:var(--ink-soft);margin:0;}

.lab-stage{
  display:flex;gap:36px;justify-content:center;align-items:flex-start;
  max-width:1100px;margin:0 auto;flex-wrap:wrap;
}

.phone{
  width:320px;height:690px;
  background:var(--bg);
  border-radius:38px;
  border:8px solid #0A0A0A;
  box-shadow:0 10px 36px rgba(0,0,0,0.2);
  overflow:hidden;position:relative;
  flex-shrink:0;
}
.notch{
  position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:120px;height:22px;background:#0A0A0A;
  border-radius:0 0 14px 14px;z-index:20;
}
.screen-stack{position:relative;width:100%;height:100%;}

.screen{
  position:absolute;inset:0;
  display:flex;flex-direction:column;
  padding:46px 22px 18px;
  background:var(--bg);
  opacity:0;visibility:hidden;
  transform:translateX(16px);
  transition:opacity 0.22s ease, transform 0.22s ease;
  pointer-events:none;
}
.screen.active{
  opacity:1;visibility:visible;transform:translateX(0);
  pointer-events:auto;
  z-index:5;
}

.eyebrow{font-size:11px;letter-spacing:0.07em;text-transform:uppercase;color:var(--ink-soft);font-weight:600;margin:0 0 8px;}
.headline{font-family:'Fraunces',serif;font-weight:500;font-size:23px;line-height:1.25;color:var(--ink);margin:0 0 12px;}
.body-text{font-size:14px;line-height:1.55;color:var(--ink-soft);margin:0 0 20px;}
.spacer{flex:1;}

button{font-family:'Inter',sans-serif;}
.btn-primary{
  background:var(--ink);color:#fff;border:none;border-radius:12px;
  padding:15px 0;font-size:14px;font-weight:600;width:100%;cursor:pointer;
  transition:opacity 0.15s;
}
.btn-primary:active{opacity:0.7;}
.btn-primary:disabled{background:var(--line);color:var(--ink-soft);cursor:not-allowed;}
.btn-secondary{
  background:transparent;color:var(--ink);border:1.5px solid var(--ink);
  border-radius:12px;padding:14px 0;font-size:14px;font-weight:500;width:100%;cursor:pointer;
}
.btn-secondary:active{opacity:0.6;}
.btn-ghost{
  background:transparent;color:var(--ink-soft);border:1.5px solid var(--line);
  border-radius:12px;padding:14px 0;font-size:14px;font-weight:500;width:100%;cursor:pointer;
}
.btn-ghost:active{opacity:0.6;}
.row-2{display:flex;gap:10px;}

/* Welcome */
.s-welcome{justify-content:center;text-align:center;align-items:center;}
.mark{width:54px;height:54px;border-radius:14px;border:2px solid var(--ink);display:flex;align-items:center;justify-content:center;margin-bottom:28px;}

/* Intent */
.intent-card{border:1.5px solid var(--line);border-radius:14px;padding:18px;margin-bottom:12px;cursor:pointer;transition:border-color 0.15s;}
.intent-card.selected{border-color:var(--ink);border-width:1.5px;}
.intent-card .t{font-size:15px;font-weight:600;color:var(--ink);margin:0 0 3px;}
.intent-card .d{font-size:12.5px;color:var(--ink-soft);margin:0;}

/* Board */
.board-deck{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;position:relative;min-height:280px;}
.board-card{
  position:absolute;width:230px;height:260px;border-radius:18px;
  background:var(--surface);
  background-image:repeating-linear-gradient(135deg, #00000012 0 2px, transparent 2px 14px);
  display:flex;align-items:flex-end;padding:18px;
  border:2px solid var(--ink);
  cursor:grab;
  transition:transform 0.28s ease, opacity 0.28s ease;
  user-select:none;
}
.board-card .card-label{font-family:'Fraunces',serif;font-size:19px;font-weight:500;color:var(--ink);}
.board-card.leaving-right{transform:translateX(340px) rotate(18deg);opacity:0;}
.board-card.leaving-left{transform:translateX(-340px) rotate(-18deg);opacity:0;}
.board-card.stamp-save::after{
  content:'saved';position:absolute;top:16px;right:16px;
  font-size:11px;font-weight:600;color:var(--ink);border:1.5px solid var(--ink);
  padding:4px 9px;border-radius:100px;
}
.board-card.stamp-skip::after{
  content:'skipped';position:absolute;top:16px;right:16px;
  font-size:11px;font-weight:600;color:var(--ink-soft);border:1.5px solid var(--line);
  padding:4px 9px;border-radius:100px;
}
.board-hint{font-size:12px;color:var(--ink-soft);text-align:center;margin-top:14px;}
.board-progress{font-size:12px;color:var(--ink-soft);text-align:center;margin-bottom:6px;}
.swipe-actions{display:flex;justify-content:center;gap:18px;margin-top:16px;}
.swipe-btn{
  width:50px;height:50px;border-radius:50%;border:1.5px solid var(--line);
  background:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer;
}
.swipe-btn.like{border-color:var(--ink);}
.swipe-btn svg{width:20px;height:20px;}

/* Voice */
.s-voice{align-items:center;text-align:center;}
.mic-circle{width:108px;height:108px;border-radius:50%;background:var(--ink);display:flex;align-items:center;justify-content:center;margin:18px 0 22px;cursor:pointer;transition:transform 0.15s;}
.mic-circle:active{transform:scale(0.95);}
.mic-circle svg{width:36px;height:36px;}
.waveform{display:flex;align-items:center;gap:3px;height:26px;margin-bottom:22px;}
.waveform span{width:3px;background:var(--ink);border-radius:2px;opacity:0.7;}
.timer-text{font-size:13px;color:var(--ink-soft);margin-bottom:6px;}

/* You're in */
.s-center{justify-content:center;text-align:center;align-items:center;}
.check-big{width:60px;height:60px;border-radius:50%;border:2px solid var(--ink);display:flex;align-items:center;justify-content:center;margin-bottom:22px;}
.check-big svg{width:26px;height:26px;}

/* Proposal */
.proposal-card{border:1.5px solid var(--ink);border-radius:16px;overflow:hidden;margin-bottom:16px;}
.proposal-img{height:130px;width:100%;position:relative;display:flex;align-items:flex-end;padding:14px;background:var(--ink);}
.date-badge{position:absolute;top:12px;left:12px;background:#fff;border-radius:10px;padding:6px 10px;text-align:center;}
.date-badge .d1{font-size:10px;font-weight:600;color:var(--ink-soft);text-transform:uppercase;}
.date-badge .d2{font-size:16px;font-weight:600;color:var(--ink);line-height:1;}
.act-title{color:#fff;font-family:'Fraunces',serif;font-size:18px;font-weight:500;}
.proposal-body{padding:14px 16px;}
.meta-row{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-soft);margin-bottom:8px;}
.meta-row svg{width:14px;height:14px;flex-shrink:0;}
.who-row{display:flex;align-items:center;gap:8px;margin-top:12px;padding-top:12px;border-top:1px solid var(--line);}
.avatar-stack{display:flex;}
.avatar{width:30px;height:30px;border-radius:50%;border:2px solid #fff;background:var(--ink);display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:600;color:#fff;margin-left:-8px;}
.avatar:first-child{margin-left:0;}
.who-text{font-size:12.5px;color:var(--ink-soft);}
.who-text b{color:var(--ink);font-weight:600;}

/* Still in */
.reminder-card{background:var(--ink);border-radius:16px;padding:20px;color:#fff;margin-bottom:24px;}
.reminder-eyebrow{font-size:11px;text-transform:uppercase;letter-spacing:0.06em;color:#B0B0B0;font-weight:600;margin-bottom:8px;}
.reminder-title{font-family:'Fraunces',serif;font-size:19px;font-weight:500;margin-bottom:4px;}
.reminder-detail{font-size:13px;color:#C9C9C9;}

/* Tap */
.tap-ring{width:156px;height:156px;border-radius:50%;border:2px dashed var(--line);display:flex;align-items:center;justify-content:center;margin:10px 0 26px;position:relative;cursor:pointer;}
.tap-ring-inner{width:104px;height:104px;border-radius:50%;background:var(--ink);display:flex;align-items:center;justify-content:center;transition:transform 0.15s;}
.tap-ring:active .tap-ring-inner{transform:scale(0.92);}
.tap-ring-inner svg{width:40px;height:40px;}
.pulse{position:absolute;inset:-10px;border-radius:50%;border:2px solid var(--ink);opacity:0.25;animation:pulse-anim 1.8s ease-out infinite;}
@keyframes pulse-anim{0%{transform:scale(0.9);opacity:0.4;}100%{transform:scale(1.18);opacity:0;}}

/* Tap success */
.connect-avatars{display:flex;align-items:center;justify-content:center;margin-bottom:22px;}
.big-avatar{width:62px;height:62px;border-radius:50%;background:var(--ink);display:flex;align-items:center;justify-content:center;font-size:19px;font-weight:600;color:#fff;border:3px solid #fff;}
.big-avatar.b{margin-left:-18px;background:#3A3A3A;}
.link-icon{width:26px;height:26px;border-radius:50%;background:#fff;border:2px solid var(--ink);display:flex;align-items:center;justify-content:center;margin:0 -10px;z-index:2;}
.link-icon svg{width:12px;height:12px;}

/* Post draft */
.post-draft-card{border:1.5px solid var(--line);border-radius:16px;padding:14px;margin-bottom:16px;}
.post-header{display:flex;align-items:center;gap:8px;margin-bottom:10px;}
.post-header .names{font-size:13px;font-weight:600;}
.post-photo{height:120px;border-radius:10px;background:var(--surface);background-image:repeating-linear-gradient(135deg, #00000010 0 2px, transparent 2px 14px);margin-bottom:10px;}
.caption-input{border:none;background:transparent;font-family:'Inter',sans-serif;font-size:13.5px;color:var(--ink-soft);width:100%;resize:none;outline:none;padding:0;}
.pending-badge{font-size:11px;font-weight:600;color:var(--ink-soft);border:1px solid var(--line);padding:4px 9px;border-radius:100px;display:inline-block;margin-top:8px;}

/* Tabbar */
.tabbar{display:flex;justify-content:space-around;padding-top:14px;margin-top:auto;border-top:1px solid var(--line);}
.tab{display:flex;flex-direction:column;align-items:center;gap:3px;cursor:pointer;background:none;border:none;padding:0;}
.tab svg{width:21px;height:21px;color:var(--ink-soft);}
.tab .tab-label{font-size:10px;color:var(--ink-soft);font-weight:500;}
.tab.active svg{color:var(--ink);}
.tab.active .tab-label{color:var(--ink);font-weight:600;}

/* Profile */
.profile-header{display:flex;flex-direction:column;align-items:center;text-align:center;margin-bottom:18px;}
.profile-avatar{width:74px;height:74px;border-radius:50%;background:var(--ink);display:flex;align-items:center;justify-content:center;font-size:24px;font-weight:600;color:#fff;margin-bottom:12px;}
.profile-name{font-family:'Fraunces',serif;font-size:20px;font-weight:500;margin:0 0 3px;}
.profile-meta{font-size:12.5px;color:var(--ink-soft);}
.intent-tag{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;background:var(--ink);color:#fff;padding:6px 12px;border-radius:100px;margin:0 auto 18px;}
.stat-row{display:flex;border:1px solid var(--line);border-radius:14px;overflow:hidden;margin-bottom:20px;}
.stat-cell{flex:1;text-align:center;padding:14px 6px;border-right:1px solid var(--line);}
.stat-cell:last-child{border-right:none;}
.stat-num{font-family:'Fraunces',serif;font-size:20px;font-weight:500;display:block;}
.stat-label{font-size:10.5px;color:var(--ink-soft);text-transform:uppercase;letter-spacing:0.04em;}
.profile-section-title{font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:0.05em;color:var(--ink-soft);margin:0 0 10px;}
.interest-pill{display:inline-block;font-size:12px;font-weight:500;color:var(--ink);border:1px solid var(--line);padding:6px 12px;border-radius:100px;margin-right:6px;margin-bottom:8px;}

/* Footprint */
.footprint-header{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:4px;}
.footprint-title{font-family:'Fraunces',serif;font-size:21px;font-weight:500;}
.footprint-sub{font-size:12.5px;color:var(--ink-soft);margin-bottom:14px;}
.map-area{
  flex:1;border-radius:14px;border:1px solid var(--line);
  background:linear-gradient(var(--line) 1px, transparent 1px) 0 0/24px 24px,
             linear-gradient(90deg, var(--line) 1px, transparent 1px) 0 0/24px 24px,#FAFAFA;
  position:relative;overflow:hidden;margin-bottom:14px;min-height:180px;cursor:pointer;
}
.map-pin{position:absolute;width:14px;height:14px;border-radius:50%;background:var(--ink);border:2px solid #fff;box-shadow:0 0 0 1px var(--ink);transform:translate(-50%,-50%);}
.map-pin.event{background:#fff;border:2px solid var(--ink);}
.map-pin.new{animation:pin-pop 0.4s ease;}
@keyframes pin-pop{0%{transform:translate(-50%,-50%) scale(0);}70%{transform:translate(-50%,-50%) scale(1.3);}100%{transform:translate(-50%,-50%) scale(1);}}
.map-tooltip{
  position:absolute;background:var(--ink);color:#fff;font-size:11px;font-weight:500;
  padding:6px 10px;border-radius:8px;white-space:nowrap;transform:translate(-50%,-130%);
  pointer-events:none;
}
.footprint-stats{display:flex;gap:8px;}
.fp-stat{flex:1;border:1px solid var(--line);border-radius:10px;padding:10px;text-align:center;}
.fp-stat .n{font-family:'Fraunces',serif;font-size:17px;font-weight:500;display:block;}
.fp-stat .l{font-size:10px;color:var(--ink-soft);text-transform:uppercase;letter-spacing:0.03em;}

/* Threads list */
.threads-header{font-family:'Fraunces',serif;font-size:21px;font-weight:500;margin-bottom:14px;}
.thread-row{display:flex;align-items:center;gap:12px;padding:13px 0;border-bottom:1px solid var(--line);cursor:pointer;background:none;border-left:none;border-right:none;border-top:none;width:100%;text-align:left;font-family:'Inter',sans-serif;}
.thread-icon{width:42px;height:42px;border-radius:10px;background:var(--ink);display:flex;align-items:center;justify-content:center;flex-shrink:0;}
.thread-icon svg{width:20px;height:20px;color:#fff;}
.thread-icon.pinned{background:#fff;border:1.5px solid var(--ink);}
.thread-icon.pinned svg{color:var(--ink);}
.thread-info{flex:1;}
.thread-name{font-size:14px;font-weight:600;margin:0 0 2px;color:var(--ink);}
.thread-meta{font-size:12px;color:var(--ink-soft);}
.thread-chevron{color:var(--ink-soft);}

/* Thread detail */
.thread-detail-header{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.back-btn{width:32px;height:32px;border-radius:50%;border:1.5px solid var(--line);background:none;display:flex;align-items:center;justify-content:center;cursor:pointer;flex-shrink:0;}
.back-btn svg{width:15px;height:15px;}
.thread-detail-title{font-family:'Fraunces',serif;font-size:18px;font-weight:500;margin:0 0 2px;}
.thread-detail-meta{font-size:11.5px;color:var(--ink-soft);}
.thread-post{padding:13px 0;border-bottom:1px solid var(--line);}
.post-row{display:flex;align-items:center;gap:9px;margin-bottom:8px;}
.post-row .pname{font-size:13px;font-weight:600;}
.post-row .ptime{font-size:11px;color:var(--ink-soft);margin-left:auto;}
.small-avatar{width:26px;height:26px;border-radius:50%;background:var(--ink);display:flex;align-items:center;justify-content:center;font-size:10px;font-weight:600;color:#fff;}
.thread-photo{height:110px;border-radius:10px;background:var(--surface);background-image:repeating-linear-gradient(135deg, #00000010 0 2px, transparent 2px 14px);margin-bottom:8px;}
.thread-caption{font-size:13px;color:var(--ink-soft);line-height:1.5;}
.thread-caption b{color:var(--ink);font-weight:600;}
.join-row{display:flex;align-items:center;justify-content:space-between;margin-top:9px;background:var(--surface);border-radius:10px;padding:9px 12px;}
.join-row span{font-size:12px;font-weight:500;}
.join-row button{background:var(--ink);color:#fff;border:none;border-radius:8px;font-size:11.5px;font-weight:600;padding:6px 11px;cursor:pointer;}
.join-row button.joined{background:#fff;color:var(--ink);border:1.5px solid var(--ink);}

/* Lab controls */
.lab-controls{width:260px;padding-top:8px;}
.lab-controls-title{font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:0.05em;color:var(--ink-soft);margin:0 0 10px;}
.jump-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-bottom:18px;}
.jump-btn{
  font-size:12px;text-align:left;padding:9px 10px;border-radius:9px;
  border:1px solid var(--line);background:#fff;cursor:pointer;color:var(--ink-soft);
  line-height:1.3;
}
.jump-btn.current{border-color:var(--ink);color:var(--ink);font-weight:600;background:var(--surface);}
.jump-btn:hover{border-color:var(--ink);}
.restart-btn{
  display:flex;align-items:center;gap:8px;width:100%;
  font-size:12.5px;font-weight:500;color:var(--ink-soft);
  background:#fff;border:1px solid var(--line);border-radius:10px;
  padding:10px 12px;cursor:pointer;
}
.restart-btn:hover{color:var(--ink);border-color:var(--ink);}

@media (max-width:760px){
  .lab-stage{flex-direction:column;align-items:center;}
  .lab-controls{width:320px;}
}