/* Mail Hub — built on the App UI Kit tokens (primary teal, Bai Jamjuree). */
:root{--bg:#F4F6F8;--surface:#FFFFFF;--ink:#16181D;--muted:#5B6470;--line:#D5DAE0;--primary:#0F766E;--on-primary:#FFFFFF;--primary-text:#0F766E;--primary-tint:#E6F2F1;--attention:#F59E0B;--success:#0F5F59;--warning:#9A5B00;--danger:#9A2B1F;--tap:44px;--r-sm:10px;--r-md:16px;--font:"Bai Jamjuree","Noto Sans Thai",system-ui,-apple-system,sans-serif;color-scheme:light}
@media (prefers-color-scheme:dark){:root{--bg:#16181D;--surface:#23262D;--ink:#F1F3F5;--muted:#A9B1BB;--line:#343842;--primary-text:#6EE7B7;--primary-tint:#1F3A37;--success:#6EE7B7;--warning:#FCD34D;--danger:#FCA5A5;color-scheme:dark}}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:400 15px/22px var(--font);padding:env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left)}
[hidden]{display:none!important}
h1{font-size:26px;line-height:32px;margin:0}
h2{font-size:17px;margin:0 0 8px}
.muted{color:var(--muted)}.small{font-size:13px;line-height:18px}
.error{color:var(--danger);margin:0;min-height:0}.error:empty,.ok:empty{display:none}
.ok{color:var(--success);margin:0}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
code{font-size:13px;word-break:break-all}
.center{min-height:100%;display:grid;place-items:center;padding:16px}
.panel{background:var(--surface);border-radius:var(--r-md);padding:24px;display:grid;gap:16px;width:100%;max-width:420px}
.panel.flat{max-width:none;padding:16px}
.panel img{justify-self:center;border-radius:8px;background:#fff}
.ui-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:var(--tap);padding:0 20px;font:700 16px/20px var(--font);border-radius:999px;border:1.5px solid transparent;background:var(--primary);color:var(--on-primary);cursor:pointer;text-decoration:none}
.ui-btn.secondary{background:var(--surface);color:var(--ink);border-color:var(--muted)}
.ui-btn.ghost{background:transparent;color:var(--primary-text);padding:0 12px}
.ui-btn.danger{background:var(--surface);color:var(--danger);border-color:var(--danger)}
.ui-btn[disabled],.ui-btn.loading{opacity:.6;pointer-events:none}
.ui-btn:focus-visible,input:focus-visible,select:focus-visible,.row:focus-visible,.chip:focus-visible,.ui-tabs button:focus-visible{outline:3px solid var(--primary-text);outline-offset:2px}
.ui-input{display:grid;gap:4px}
.ui-input label{font-size:14px;font-weight:600}
.ui-input input,.ui-input select,.search input{min-height:var(--tap);padding:0 14px;border-radius:var(--r-sm);border:1.5px solid var(--muted);background:var(--surface);color:var(--ink);font:400 16px var(--font);width:100%}
.ui-input .help{font-size:13px;color:var(--muted)}
fieldset{border:0;padding:0;margin:0;display:grid;gap:16px}
.ui-tabs{display:flex;flex-wrap:wrap;background:var(--bg);border-radius:999px;padding:4px;gap:4px}
.ui-tabs button{flex:1;min-height:40px;padding:0 12px;border:0;border-radius:999px;background:transparent;color:var(--ink);font:600 15px var(--font);cursor:pointer}
.ui-tabs button[aria-selected="true"]{background:var(--surface);color:var(--primary-text)}
.ui-list{background:var(--surface);border-radius:var(--r-md);overflow:hidden}
.ui-toast{position:fixed;left:50%;transform:translateX(-50%);bottom:calc(16px + env(safe-area-inset-bottom));background:var(--ink);color:var(--bg);border-radius:var(--r-md);padding:12px 16px;font-weight:500;max-width:calc(100% - 32px);z-index:5}

/* App layout: phone = one column; wide screens = filters | list | reader */
.app{display:grid;grid-template-rows:auto auto 1fr;height:100%}
.topbar{display:flex;align-items:center;gap:4px;padding:8px 12px;background:var(--surface);border-bottom:1px solid var(--line);flex-wrap:wrap}
.brand{font-weight:700;font-size:18px;margin-right:auto;padding-left:4px}
.sync{order:5;width:100%;padding-left:4px}
.filters{padding:12px;display:grid;gap:8px;background:var(--bg)}
.chips{display:flex;gap:8px;overflow-x:auto;padding-bottom:4px;scrollbar-width:none}
.chip{flex:0 0 auto;min-height:var(--tap);padding:0 16px;border-radius:999px;border:1.5px solid var(--line);background:var(--surface);color:var(--ink);font:600 14px var(--font);cursor:pointer;display:inline-flex;align-items:center;gap:6px}
.chip[aria-pressed="true"]{background:var(--primary-tint);border-color:var(--primary-text);color:var(--primary-text)}
.chip .n{font-size:12px;background:var(--attention);color:#16181D;border-radius:999px;padding:0 6px;line-height:18px}
.list{overflow-y:auto;background:var(--surface)}
.row{display:grid;grid-template-columns:6px 1fr auto;gap:0 12px;padding:12px 16px 12px 0;border-bottom:1px solid var(--line);cursor:pointer;min-height:72px}
.row .bar{grid-row:1/4;border-radius:0 4px 4px 0}
.row .who{font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.row.unread .who,.row.unread .subj{font-weight:700}
.row .when{font-size:13px;color:var(--muted);white-space:nowrap}
.row .subj{grid-column:2/4;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.row .meta{grid-column:2/4;font-size:13px;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.row .tag{font-weight:600;color:var(--mb)}
@media (prefers-color-scheme:dark){.row .tag{color:var(--muted)}}
.row[aria-current="true"]{background:var(--primary-tint)}
.empty{padding:32px 16px;text-align:center;color:var(--muted)}
.more{display:flex;justify-content:center;padding:16px}
.reader{overflow-y:auto;background:var(--surface);padding:16px;display:grid;align-content:start;gap:12px}
.reader .back{justify-self:start}
.reader h1{font-size:22px;line-height:28px}
.reader .to{font-size:13px;color:var(--muted)}
.reader .badge{display:inline-flex;align-items:center;gap:6px;font:600 13px/18px var(--font);padding:3px 10px;border-radius:999px;border:2px solid var(--mb);color:var(--ink);justify-self:start}
.reader .body{white-space:pre-wrap;word-wrap:break-word;line-height:24px}
.reader iframe{width:100%;min-height:60vh;border:1px solid var(--line);border-radius:var(--r-sm);background:#fff}
.reader .atts{display:flex;flex-wrap:wrap;gap:8px}
.reader .actions{display:flex;flex-wrap:wrap;gap:8px}
@media (max-width:899px){.app.reading .filters,.app.reading .list{display:none}.app.reading .reader{grid-row:2/4}}
@media (min-width:900px){
  .app{grid-template-columns:240px minmax(320px,420px) 1fr;grid-template-rows:auto 1fr}
  .topbar{grid-column:1/4}.sync{order:0;width:auto;margin-right:8px}
  .filters{align-content:start;border-right:1px solid var(--line)}
  .chips{flex-direction:column;overflow:visible}
  .chip{justify-content:space-between}
  .list{border-right:1px solid var(--line)}
  .reader{display:grid!important}.reader .back{display:none}
}
.settings{min-height:100%}
.signout{justify-self:start}
.settings-body{display:grid;gap:24px;padding:16px;max-width:720px;margin:0 auto}
.mb{display:grid;grid-template-columns:6px 1fr auto;gap:4px 12px;padding:12px 16px 12px 0;border-top:1px solid var(--line);align-items:center}
.mb:first-child{border-top:0}
.mb .bar{grid-row:1/3;align-self:stretch;border-radius:0 4px 4px 0}
.mb .status{font-size:13px;color:var(--muted);grid-column:2}
.mb .status.bad{color:var(--danger)}
/* Step 2: writing mail */
.fab{position:fixed;right:calc(16px + env(safe-area-inset-right));bottom:calc(16px + env(safe-area-inset-bottom));box-shadow:0 4px 14px rgba(0,0,0,.22);z-index:4;min-height:52px;padding:0 22px}
.app.reading .fab{display:none}
@media (min-width:900px){.app.reading .fab{display:inline-flex}}
.reply-actions{margin-top:4px}
.replied{color:var(--success);margin:0}
.ui-toast{display:flex;align-items:center;gap:12px}
.toast-action{background:transparent;border:0;color:var(--bg);font:700 15px var(--font);text-decoration:underline;min-height:var(--tap);padding:0 4px;cursor:pointer}
.compose{min-height:100%;background:var(--bg)}
.compose-body{display:grid;gap:14px;padding:16px;max-width:760px;margin:0 auto;padding-bottom:calc(32px + env(safe-area-inset-bottom))}
.compose textarea,.mb-edit textarea{min-height:var(--tap);padding:12px 14px;border-radius:var(--r-sm);border:1.5px solid var(--muted);background:var(--surface);color:var(--ink);font:400 16px/24px var(--font);width:100%;resize:vertical}
#c-text{min-height:260px}
.from-wrap{display:flex;align-items:stretch;gap:0}
.from-bar{width:8px;border-radius:var(--r-sm) 0 0 var(--r-sm);flex:0 0 auto}
.from-wrap select{border-radius:0 var(--r-sm) var(--r-sm) 0;border-left:0}
.linkish{justify-self:start;background:transparent;border:0;color:var(--primary-text);font:600 15px var(--font);min-height:var(--tap);padding:0;cursor:pointer;text-decoration:underline}
.label-like{font-size:14px;font-weight:600}
.filepick{justify-self:start;cursor:pointer}
#c-files:focus-visible+.filepick{outline:3px solid var(--primary-text);outline-offset:2px}
.list{padding-bottom:84px}
.att-chip{display:inline-flex;align-items:center;gap:4px;background:var(--surface);border:1.5px solid var(--line);border-radius:999px;padding:0 4px 0 12px;font-size:14px;max-width:100%}
.att-chip span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.att-x{min-width:var(--tap);min-height:var(--tap);border:0;background:transparent;color:var(--muted);font-size:16px;cursor:pointer;border-radius:999px}
.send-row{display:flex;align-items:center;gap:12px;flex-wrap:wrap;position:sticky;bottom:0;margin:0 -16px calc(-32px - env(safe-area-inset-bottom));padding:12px 16px calc(12px + env(safe-area-inset-bottom));background:var(--bg);border-top:1px solid var(--line);z-index:3}
body:has(#view-compose:not([hidden])) .ui-toast{bottom:calc(84px + env(safe-area-inset-bottom))}
#c-send{min-width:140px}
#c-send.undo{background:var(--surface);color:var(--ink);border-color:var(--ink)}
.compose-body.locked .ui-input{opacity:.6}
textarea:focus-visible,.linkish:focus-visible,.att-x:focus-visible,.toast-action:focus-visible{outline:3px solid var(--primary-text);outline-offset:2px}
.mb-btns{display:flex;gap:0}
.mb-edit{display:grid;gap:14px;padding:16px;border-top:1px dashed var(--line);background:var(--bg)}
.mb-edit .ui-btn{justify-self:start}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}
/* Step 3: AI reply drafts */
.ai-btn{border-color:var(--primary-text);color:var(--primary-text)}
.ai-panel{display:grid;gap:8px}
.ai-panel textarea,.answer textarea{min-height:var(--tap);padding:12px 14px;border-radius:var(--r-sm);border:1.5px solid var(--muted);background:var(--surface);color:var(--ink);font:400 16px/24px var(--font);width:100%;resize:vertical}
.ai-panel p:empty{display:none}
.ai-banner{display:grid;gap:10px;background:var(--primary-tint);border:1.5px solid var(--primary-text);border-radius:var(--r-md);padding:14px 16px}
.ai-banner p{margin:0}
.ai-title{font-weight:700}
.ai-check-title{font-weight:600}
.ai-banner ul{margin:4px 0 0;padding-left:20px}
.ai-rewrite{display:flex;gap:8px;flex-wrap:wrap}
.ai-rewrite input{flex:1 1 220px}
.ai-banner .small:empty{display:none}
.answers{display:grid;gap:16px}
.answer{display:grid;gap:10px;background:var(--surface);border-radius:var(--r-md);padding:16px}
.answer .ui-btn{justify-self:start}
.ai-status{margin:0 0 12px;color:var(--success)}
.ai-status.off{color:var(--warning)}
/* Step 4: language switch, businesses, Thai text */
html[lang="th"] body{line-height:24px}
html[lang="th"] .ui-btn,html[lang="th"] .chip{line-height:24px}
html[lang="th"] .reader h1{line-height:32px}
.center{position:relative}
.lang-btn.corner{position:absolute;top:calc(8px + env(safe-area-inset-top));right:calc(8px + env(safe-area-inset-right))}
.center .panel{margin-top:44px}
@media (min-height:700px){.center .panel{margin-top:0}}
h3{font-size:16px;margin:0}
.biz-add{margin-top:12px}
.mb.biz .biz-name{font-weight:600;overflow-wrap:anywhere}
.swatches{display:flex;flex-wrap:wrap;gap:4px}
.swatches legend{font-size:14px;font-weight:600;margin-bottom:4px;padding:0}
.swatch{position:relative;width:var(--tap);height:var(--tap);display:grid;place-items:center;cursor:pointer;border-radius:999px}
.swatch input{position:absolute;opacity:0;inset:0;margin:0;cursor:pointer}
.swatch .dot{width:30px;height:30px;border-radius:999px;background:var(--sw);box-shadow:inset 0 0 0 2px rgba(0,0,0,.08)}
.swatch input:checked+.sr+.dot{box-shadow:0 0 0 3px var(--surface),0 0 0 5px var(--ink)}
.swatch input:focus-visible+.sr+.dot{outline:3px solid var(--primary-text);outline-offset:4px}
.lang-choice{max-width:360px}
.lang-choice button[aria-pressed="true"]{background:var(--surface);color:var(--primary-text)}
.lang-choice button:focus-visible{outline:3px solid var(--primary-text);outline-offset:2px}
#biz-list>.error{padding:0 16px 12px}
.lang-btn.short{padding:0 10px;min-width:var(--tap)}