/* ============ tokens ============ */
:root{
  --bg:#f4f5f7; --surface:#ffffff; --surface-2:#f9fafb; --surface-3:#eef0f3;
  --text:#14161a; --text-2:#5b6472; --text-3:#8b95a3;
  --border:#e2e5ea; --border-2:#d3d8e0;
  --accent:#4f46e5; --accent-soft:#eef2ff; --accent-text:#ffffff;
  --danger:#dc2626; --danger-soft:#fef2f2;
  --ok:#16a34a;
  --p-urgent:#e11d48; --p-high:#f97316; --p-normal:#3b82f6; --p-low:#94a3b8;
  --shadow-1:0 1px 2px rgba(16,24,40,.06), 0 1px 3px rgba(16,24,40,.08);
  --shadow-2:0 4px 12px rgba(16,24,40,.10);
  --shadow-3:0 18px 44px rgba(16,24,40,.18);
  --r:10px; --r-lg:14px;
  --topbar-h:58px;
}
[data-theme="dark"]{
  --bg:#0e1116; --surface:#171b22; --surface-2:#1d222b; --surface-3:#252b36;
  --text:#e9edf3; --text-2:#9aa5b4; --text-3:#6b7685;
  --border:#252b36; --border-2:#333b49;
  --accent:#7c76ff; --accent-soft:#232244; --accent-text:#0e1116;
  --danger:#f87171; --danger-soft:#2a1618;
  --ok:#4ade80;
  --shadow-1:0 1px 2px rgba(0,0,0,.4);
  --shadow-2:0 4px 14px rgba(0,0,0,.45);
  --shadow-3:0 18px 44px rgba(0,0,0,.6);
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0; background:var(--bg); color:var(--text);
  font:15px/1.5 Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  -webkit-font-smoothing:antialiased; overscroll-behavior:none;
}
h1,h2,h3{margin:0; font-weight:650; letter-spacing:-.01em}
button,input,select,textarea{font:inherit; color:inherit}
svg{fill:none; stroke:currentColor; stroke-width:1.8; stroke-linecap:round; stroke-linejoin:round}
.muted{color:var(--text-2)}
.small{font-size:13px}
.spacer{flex:1}
[hidden]{display:none !important}

/* ============ buttons ============ */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding:9px 16px; border-radius:var(--r); border:1px solid transparent;
  background:transparent; cursor:pointer; font-weight:550; white-space:nowrap;
  transition:background .14s, border-color .14s, transform .06s;
}
.btn:active{transform:translateY(1px)}
.btn-sm{padding:6px 12px; font-size:13.5px}
.btn-primary{background:var(--accent); color:var(--accent-text)}
.btn-primary:hover{filter:brightness(1.08)}
.btn-ghost{border-color:var(--border-2); color:var(--text-2); background:var(--surface)}
.btn-ghost:hover{background:var(--surface-3); color:var(--text)}
.btn-danger-ghost{color:var(--danger); border-color:transparent}
.btn-danger-ghost:hover{background:var(--danger-soft)}
.btn-google{background:var(--surface); border-color:var(--border-2); width:100%; padding:11px 16px}
.btn-google:hover{background:var(--surface-3)}
.btn-google svg{stroke:none}

.icon-btn{
  position:relative; display:grid; place-items:center; width:34px; height:34px;
  border-radius:9px; border:1px solid transparent; background:transparent;
  color:var(--text-2); cursor:pointer; flex:none;
}
.icon-btn:hover{background:var(--surface-3); color:var(--text)}
.icon-btn svg{width:18px; height:18px}
.icon-badge{
  position:absolute; top:-3px; right:-3px; min-width:16px; height:16px; padding:0 4px;
  border-radius:8px; background:var(--accent); color:var(--accent-text);
  font-size:10.5px; font-weight:700; display:grid; place-items:center;
}

/* ============ auth ============ */
.auth-screen{position:fixed; inset:0; display:grid; place-items:center; padding:24px; background:var(--bg); z-index:50}
.auth-card{
  width:min(380px,100%); background:var(--surface); border:1px solid var(--border);
  border-radius:18px; padding:36px 30px 28px; text-align:center; box-shadow:var(--shadow-2);
}
.auth-mark{font-size:40px; line-height:1}
.auth-card h1{margin:12px 0 4px; font-size:24px}
.auth-sub{margin:0 0 24px; color:var(--text-2); font-size:14.5px}
.auth-card .btn-ghost{margin-top:10px; width:100%; border-color:transparent}
.auth-who{margin:12px 0 0; text-align:left}
.auth-error{margin:16px 0 0; padding:10px 12px; border-radius:var(--r); background:var(--danger-soft); color:var(--danger); font-size:13px; text-align:left}

/* ============ topbar ============ */
.app{position:relative; display:flex; flex-direction:column; height:100%}
.topbar{
  height:var(--topbar-h); flex:none; display:flex; align-items:center; gap:14px;
  padding:0 16px; background:var(--surface); border-bottom:1px solid var(--border); z-index:20;
}
.topbar-left{display:flex; align-items:center; gap:10px; min-width:0}
.brand-mark{font-size:19px}
.board-title{
  font-size:16.5px; padding:4px 8px; margin-left:-4px; border-radius:8px;
  border:1px solid transparent; max-width:34vw; overflow:hidden; text-overflow:ellipsis; white-space:nowrap;
}
.board-title[contenteditable="true"]:hover{background:var(--surface-3)}
.board-title:focus{outline:none; background:var(--surface); border-color:var(--accent)}
.badge{font-size:11px; font-weight:650; padding:3px 8px; border-radius:20px; white-space:nowrap}
.badge-demo{background:#fef3c7; color:#92400e}
[data-theme="dark"] .badge-demo{background:#3b2f10; color:#fbbf24}
.sync-dot{width:7px; height:7px; border-radius:50%; background:var(--ok); flex:none}
.sync-dot.is-off{background:var(--text-3)}

.topbar-search{position:relative; flex:1; max-width:420px; margin:0 auto}
.search-icon{position:absolute; left:11px; top:50%; transform:translateY(-50%); width:16px; height:16px; color:var(--text-3)}
#search{
  width:100%; padding:8px 12px 8px 34px; border-radius:9px;
  border:1px solid var(--border-2); background:var(--surface-2); outline:none;
}
#search:focus{border-color:var(--accent); background:var(--surface)}

.topbar-right{display:flex; align-items:center; gap:6px; margin-left:auto}
.seg{display:flex; background:var(--surface-3); border-radius:9px; padding:2px}
.seg-btn{
  padding:5px 12px; border:0; background:transparent; border-radius:7px;
  color:var(--text-2); font-size:13.5px; font-weight:550; cursor:pointer;
}
.seg-btn.is-active{background:var(--surface); color:var(--text); box-shadow:var(--shadow-1)}
.ico-moon{display:none}
[data-theme="dark"] .ico-sun{display:none}
[data-theme="dark"] .ico-moon{display:block}

.avatar-btn{
  width:32px; height:32px; border-radius:50%; border:1px solid var(--border-2);
  background:var(--accent-soft); color:var(--accent); font-weight:700; font-size:13px;
  cursor:pointer; overflow:hidden; display:grid; place-items:center; padding:0; flex:none;
}
.avatar-btn img{width:100%; height:100%; object-fit:cover; display:block}

/* ============ filter tray ============ */
.filter-tray{
  display:flex; flex-wrap:wrap; align-items:center; gap:18px;
  padding:12px 16px; background:var(--surface); border-bottom:1px solid var(--border);
}
.tray-group{display:flex; align-items:center; gap:8px; min-width:0}
.tray-label{font-size:12px; font-weight:650; text-transform:uppercase; letter-spacing:.04em; color:var(--text-3)}
.chips{display:flex; flex-wrap:wrap; gap:6px}
.chip{
  padding:4px 11px; border-radius:20px; border:1px solid var(--border-2);
  background:var(--surface-2); color:var(--text-2); font-size:13px; cursor:pointer;
}
.chip:hover{border-color:var(--text-3)}
.chip.is-on{background:var(--accent); border-color:var(--accent); color:var(--accent-text); font-weight:550}

/* ============ popover ============ */
.popover{
  position:absolute; top:calc(var(--topbar-h) + 4px); right:14px; z-index:40;
  width:244px; padding:6px; background:var(--surface); border:1px solid var(--border);
  border-radius:var(--r-lg); box-shadow:var(--shadow-3);
}
.pop-head{display:flex; flex-direction:column; gap:1px; padding:10px 12px 12px}
.pop-head .muted{font-size:12.5px; overflow:hidden; text-overflow:ellipsis}
.pop-role{margin-top:7px; display:flex; align-items:center; gap:5px; flex-wrap:wrap}
.role-pill{font-size:11px; font-weight:650; padding:2px 8px; border-radius:20px;
  background:var(--surface-3); color:var(--text-2)}
.role-pill.is-owner{background:var(--accent-soft); color:var(--accent)}
.popover hr{border:0; border-top:1px solid var(--border); margin:6px 4px}
.pop-item{
  display:flex; align-items:center; gap:10px; width:100%; padding:9px 12px;
  border:0; border-radius:8px; background:transparent; cursor:pointer; text-align:left; font-size:14px;
}
.pop-item:hover{background:var(--surface-3)}
.pop-item.danger{color:var(--danger)}
.pop-item.danger:hover{background:var(--danger-soft)}

/* ============ board ============ */
.board-wrap{flex:1; overflow:auto; padding:16px; -webkit-overflow-scrolling:touch}
.board{display:flex; align-items:flex-start; gap:14px; min-height:100%; width:max-content; min-width:100%}

.column{
  display:flex; flex-direction:column; width:302px; flex:none; max-height:100%;
  background:var(--surface-2); border:1px solid var(--border); border-radius:var(--r-lg);
}
.column.is-dropzone{border-color:var(--accent); background:var(--accent-soft)}
.col-head{display:flex; align-items:center; gap:8px; padding:12px 12px 10px}
.col-swatch{width:9px; height:9px; border-radius:3px; flex:none}
.col-name{
  font-size:13.5px; font-weight:650; letter-spacing:.01em; padding:2px 5px; margin-left:-5px;
  border-radius:6px; border:1px solid transparent; outline:none; min-width:20px;
}
.col-name:hover{background:var(--surface-3)}
.col-name:focus{background:var(--surface); border-color:var(--accent)}
.col-count{
  font-size:11.5px; font-weight:650; color:var(--text-3);
  background:var(--surface-3); padding:2px 7px; border-radius:20px;
}
.col-head .icon-btn{width:28px; height:28px; opacity:0; transition:opacity .12s}
.column:hover .col-head .icon-btn,
.col-head .icon-btn:focus-visible{opacity:1}
.col-head .icon-btn svg{width:16px; height:16px}

.col-cards{
  display:flex; flex-direction:column; gap:8px; padding:0 8px 8px;
  overflow-y:auto; min-height:52px; flex:1;
}
.col-foot{padding:0 8px 10px}
.add-card{
  width:100%; padding:8px; border:1px dashed var(--border-2); border-radius:var(--r);
  background:transparent; color:var(--text-2); font-size:13.5px; cursor:pointer; text-align:left;
}
.add-card:hover{border-color:var(--accent); color:var(--accent); background:var(--surface)}

.add-column{
  width:250px; flex:none; padding:12px; border:1px dashed var(--border-2);
  border-radius:var(--r-lg); background:transparent; color:var(--text-2);
  cursor:pointer; font-size:14px;
}
.add-column:hover{border-color:var(--accent); color:var(--accent); background:var(--surface)}

/* ============ card ============ */
.card{
  position:relative; background:var(--surface); border:1px solid var(--border);
  border-left:3px solid var(--p-normal); border-radius:var(--r);
  padding:10px 11px; cursor:grab; box-shadow:var(--shadow-1);
  touch-action:manipulation; user-select:none;
}
.card:hover{border-color:var(--border-2); box-shadow:var(--shadow-2)}
.card[data-priority="urgent"]{border-left-color:var(--p-urgent)}
.card[data-priority="high"]{border-left-color:var(--p-high)}
.card[data-priority="normal"]{border-left-color:var(--p-normal)}
.card[data-priority="low"]{border-left-color:var(--p-low)}
.card.is-ghost{opacity:.35}
.card.is-pressing{transform:scale(.97); border-color:var(--accent)}
.card-title{font-size:14px; font-weight:550; line-height:1.35; word-break:break-word}
.card-tags{display:flex; flex-wrap:wrap; gap:4px; margin-top:8px}
.tag{font-size:11px; padding:2px 7px; border-radius:5px; background:var(--surface-3); color:var(--text-2)}
.card-foot{display:flex; align-items:center; gap:8px; margin-top:9px}
.who{
  display:inline-flex; align-items:center; gap:6px; font-size:12px; color:var(--text-2);
  max-width:100%; min-width:0;
}
.who b{font-weight:550; color:var(--text); overflow:hidden; text-overflow:ellipsis; white-space:nowrap}
.pip{
  width:20px; height:20px; border-radius:50%; flex:none; display:grid; place-items:center;
  font-size:10px; font-weight:700; color:#fff; letter-spacing:.02em;
}
.pip.is-empty{background:var(--surface-3); color:var(--text-3); border:1px dashed var(--border-2)}
.due{font-size:11.5px; padding:2px 7px; border-radius:5px; background:var(--surface-3); color:var(--text-2); white-space:nowrap}
.due.is-soon{background:#fff7ed; color:#c2410c}
.due.is-over{background:var(--danger-soft); color:var(--danger); font-weight:600}
[data-theme="dark"] .due.is-soon{background:#3a2410; color:#fdba74}

/* drag */
.drag-layer{
  position:fixed; z-index:200; pointer-events:none; width:286px;
  box-shadow:var(--shadow-3); transform:rotate(1.5deg); cursor:grabbing;
}
.drop-line{height:2px; border-radius:2px; background:var(--accent); margin:1px 0; flex:none}
body.is-dragging{cursor:grabbing; user-select:none; touch-action:none}
body.is-dragging .board-wrap, body.is-dragging .col-cards{touch-action:none}
body.is-dragging *{cursor:grabbing !important}

/* ============ dialogs ============ */
.dialog{
  width:min(620px, calc(100vw - 28px)); max-height:min(86vh, 860px); padding:0;
  border:1px solid var(--border); border-radius:16px; background:var(--surface);
  color:var(--text); box-shadow:var(--shadow-3);
}
.dialog::backdrop{background:rgba(9,12,18,.5); backdrop-filter:blur(2px)}
/* Scope the flex layout to [open]: a bare `.dialog{display:flex}` would
   beat the UA's `dialog:not([open]){display:none}` and leave closed
   dialogs painted on screen. */
.dialog[open]{display:flex; flex-direction:column; overflow:hidden}
.dialog > form{display:flex; flex-direction:column; min-height:0; flex:1}
.dlg-head{display:flex; align-items:center; gap:10px; padding:16px 14px 12px 18px; border-bottom:1px solid var(--border)}
.dlg-head h2{font-size:16px; flex:1}
.dlg-title-input{
  flex:1; min-width:0; font-size:17px; font-weight:600; padding:6px 8px; margin-left:-8px;
  border:1px solid transparent; border-radius:8px; background:transparent; outline:none;
}
.dlg-title-input:focus{background:var(--surface-2); border-color:var(--accent)}
.dlg-body{padding:18px; overflow-y:auto; min-height:0; display:flex; flex-direction:column; gap:14px}
.dlg-foot{display:flex; align-items:center; gap:8px; padding:12px 16px; border-top:1px solid var(--border); background:var(--surface-2); border-radius:0 0 16px 16px}

.field-grid{display:grid; grid-template-columns:repeat(2,1fr); gap:14px}
.field{display:flex; flex-direction:column; gap:5px; min-width:0}
.field > span{font-size:12.5px; font-weight:600; color:var(--text-2)}
.field em{font-style:normal; font-weight:400}
.field input, .field select, .field textarea{
  width:100%; padding:9px 11px; border-radius:9px; border:1px solid var(--border-2);
  background:var(--surface-2); outline:none; resize:vertical;
}
.field input:focus, .field select:focus, .field textarea:focus{border-color:var(--accent); background:var(--surface)}
.card-meta{margin:0; font-size:12px}

.people-section{display:flex; flex-direction:column; gap:10px}
.people-section h3{font-size:14px}
.people-section p{margin:-4px 0 2px}
.people-rule{border:0; border-top:1px solid var(--border); margin:4px 0}
.invite-row{display:flex; gap:8px}
.invite-row input{flex:1; padding:9px 11px; border-radius:9px; border:1px solid var(--border-2); background:var(--surface-2); outline:none}
.invite-row input:focus{border-color:var(--accent)}
.arch-search{width:100%; padding:9px 11px; border-radius:9px; border:1px solid var(--border-2); background:var(--surface-2); outline:none}
.arch-search:focus{border-color:var(--accent); background:var(--surface)}
.archive-list{list-style:none; margin:0; padding:0; display:flex; flex-direction:column}
.archive-list li{display:flex; align-items:center; gap:10px; padding:10px 4px; border-bottom:1px solid var(--border)}
.archive-list li:last-child{border-bottom:0}
.arch-main{display:flex; flex-direction:column; gap:1px; min-width:0; flex:1}
.arch-main b{font-weight:550; overflow:hidden; text-overflow:ellipsis; white-space:nowrap}
.arch-foot{display:flex; align-items:center; gap:12px; padding-top:4px}
.member-list, .activity-list{list-style:none; margin:0; padding:0; display:flex; flex-direction:column; gap:2px}
.member-list li{display:flex; align-items:center; gap:10px; padding:9px 4px; border-bottom:1px solid var(--border)}
.member-list li:last-child{border-bottom:0}
.member-list .role{font-size:11.5px; color:var(--text-3); margin-left:auto}
.activity-list li{padding:9px 4px; border-bottom:1px solid var(--border); font-size:13.5px; color:var(--text-2)}
.activity-list li:last-child{border-bottom:0}
.activity-list time{display:block; font-size:11.5px; color:var(--text-3); margin-top:2px}

.empty-state{position:absolute; inset:auto 0 auto 0; top:45%; text-align:center; color:var(--text-2)}

.toast{
  position:fixed; left:50%; bottom:22px; transform:translateX(-50%);
  background:var(--text); color:var(--bg); padding:10px 18px; border-radius:20px;
  font-size:13.5px; font-weight:550; box-shadow:var(--shadow-3); z-index:300;
}

/* ============ responsive ============ */

/* Tablets and narrow laptops */
@media (max-width:980px){
  .topbar-search{max-width:320px}
  .board-title{max-width:26vw}
}

/* Phones */
@media (max-width:860px){
  .topbar{
    flex-wrap:wrap; height:auto; padding:8px 10px 10px; gap:8px;
    position:sticky; top:0; padding-top:calc(8px + env(safe-area-inset-top));
  }
  .topbar-left{flex:1 1 auto; min-width:0; gap:8px}
  .brand-mark{font-size:17px}
  .board-title{font-size:15.5px; max-width:42vw}
  .badge-demo{font-size:10px; padding:2px 6px}

  /* full-width search on its own row, below the controls */
  .topbar-search{order:3; flex:1 1 100%; max-width:none; margin:0}
  #search{padding-top:10px; padding-bottom:10px; font-size:16px} /* 16px stops iOS zooming on focus */

  .topbar-right{gap:2px}
  .seg-btn{padding:7px 11px; font-size:13px}
  .icon-btn{width:38px; height:38px}          /* ≥44px tap target with spacing */
  .avatar-btn{width:34px; height:34px}

  .filter-tray{gap:12px; padding:10px 12px}
  .tray-group{flex:1 1 100%}
  .chip{padding:7px 13px; font-size:13.5px}   /* thumbs, not cursors */

  .popover{right:8px; left:8px; width:auto; top:auto}
  .pop-item{padding:12px}

  /* columns stack and the page scrolls down — no sideways swiping */
  .board-wrap{padding:10px; overflow-x:hidden}
  .board{
    flex-direction:column; align-items:stretch;
    width:100%; min-width:0; gap:12px;
  }
  .column{width:100%; max-width:none; max-height:none}
  /* the page scrolls, not each column, so a column shows all its cards */
  .col-cards{overflow:visible; max-height:none}
  .col-head{padding:12px 12px 8px}
  .col-head .icon-btn{opacity:1}              /* no hover on touch — always show */
  .card{padding:12px 12px}
  .card-title{font-size:14.5px}
  .add-card{padding:12px}
  .add-column{width:100%}

  /* dialogs become full-screen sheets */
  .dialog{
    width:100%; max-width:100%; height:100dvh; max-height:100dvh;
    border-radius:0; border:0;
  }
  .dlg-head{padding:calc(14px + env(safe-area-inset-top)) 12px 12px 16px}
  .dlg-body{padding:16px; gap:16px}
  .field-grid{grid-template-columns:1fr}
  .field input, .field select, .field textarea, .invite-row input, .arch-search{
    padding:12px; font-size:16px;
  }
  .dlg-title-input{font-size:17px}
  .dlg-foot{
    border-radius:0; padding:12px 14px calc(12px + env(safe-area-inset-bottom));
    position:sticky; bottom:0;
  }
  .dlg-foot .btn{padding:11px 16px}

  .archive-list li, .member-list li{padding:12px 4px}
  .toast{bottom:calc(18px + env(safe-area-inset-bottom)); max-width:calc(100vw - 32px); text-align:center}
}

/* Very narrow phones */
@media (max-width:400px){
  .board-title{max-width:34vw; font-size:15px}
  .seg-btn{padding:7px 9px; font-size:12.5px}
}

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