:root{--green:#5d7f6f;--green-dark:#3f6052;--paper:#f6f3ed;--ink:#26322d;--muted:#718079;--line:#dde3df;--white:#fff;--shadow:0 12px 38px rgba(38,50,45,.12)}
*{box-sizing:border-box}html,body{margin:0;height:100%;font-family:-apple-system,BlinkMacSystemFont,"Hiragino Sans","Yu Gothic",sans-serif;color:var(--ink);background:var(--paper)}button,input,textarea{font:inherit}.app-shell{height:100%;max-width:720px;margin:0 auto;background:#f8f7f3}.picker-screen{min-height:100%;padding:13vh 24px 40px;text-align:center}.brand-mark{display:grid;place-items:center;width:68px;height:68px;margin:0 auto 18px;border-radius:22px;background:var(--green);color:white;font:700 34px Georgia,serif;box-shadow:var(--shadow)}.picker-screen h1,.install-card h1{margin:0;font-family:Georgia,"Yu Mincho",serif;font-size:34px}.picker-screen p,.install-card>p{color:var(--muted)}.member-list{display:grid;gap:12px;max-width:400px;margin:32px auto}.member-choice{display:flex;align-items:center;gap:16px;padding:14px 18px;border:1px solid var(--line);border-radius:18px;background:white;color:var(--ink);font-weight:700;text-align:left;box-shadow:0 4px 14px rgba(38,50,45,.05)}.chat-screen{height:100%;display:grid;grid-template-rows:auto auto 1fr auto}.topbar{display:flex;align-items:center;justify-content:space-between;padding:calc(12px + env(safe-area-inset-top)) 18px 12px;background:rgba(255,255,255,.94);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}.topbar h1{margin:1px 0 0;font:700 24px Georgia,"Yu Mincho",serif}.eyebrow{margin:0;color:var(--green);font-size:10px;font-weight:800;letter-spacing:.14em}.header-actions{display:flex;align-items:center;gap:8px}.icon-button,.avatar-button{display:grid;place-items:center;width:42px;height:42px;border:0;border-radius:50%;background:#edf2ef}.avatar-button{padding:0}.avatar{display:inline-grid;place-items:center;flex:0 0 auto;width:38px;height:38px;border-radius:50%;object-fit:cover;color:white;font-weight:800}.avatar.large{width:64px;height:64px;font-size:24px}.connection-banner{padding:7px;text-align:center;background:#fff2ce;color:#715c24;font-size:12px}.messages{overflow-y:auto;padding:20px 14px 28px}.message-row{display:flex;align-items:flex-end;gap:8px;margin:0 0 15px}.message-row.mine{justify-content:flex-end}.message-stack{display:flex;flex-direction:column;align-items:flex-start;max-width:min(78%,480px)}.mine .message-stack{align-items:flex-end}.sender{margin:0 0 4px 3px;color:var(--muted);font-size:12px}.bubble{padding:10px 14px;border-radius:6px 18px 18px 18px;background:white;line-height:1.55;word-break:break-word;box-shadow:0 3px 12px rgba(38,50,45,.06)}.mine .bubble{border-radius:18px 6px 18px 18px;background:#cfe4d9}.message-stack time{margin:4px 5px 0;color:#96a09b;font-size:10px}.composer{display:flex;align-items:flex-end;gap:9px;padding:10px 12px calc(10px + env(safe-area-inset-bottom));background:white;border-top:1px solid var(--line)}.composer textarea{flex:1;max-height:120px;resize:none;padding:10px 13px;border:1px solid var(--line);border-radius:18px;background:#f4f6f4;outline:none}.composer textarea:focus{border-color:var(--green)}.composer button,.dialog-actions button,.install-submit{border:0;border-radius:15px;padding:11px 17px;background:var(--green);color:white;font-weight:700}.composer button:disabled{opacity:.5}.profile-dialog{width:min(92%,440px);border:0;border-radius:24px;padding:24px;box-shadow:var(--shadow)}.profile-dialog::backdrop{background:rgba(21,31,27,.42)}.profile-dialog h2{margin-top:0}.avatar-preview{text-align:center;margin:8px 0 18px}.field-label{display:grid;gap:7px;margin:14px 0;color:var(--muted);font-size:13px;font-weight:700}.field-label input{width:100%;padding:11px 12px;border:1px solid var(--line);border-radius:12px;color:var(--ink);background:white}.dialog-actions{display:flex;justify-content:flex-end;flex-wrap:wrap;gap:8px;margin-top:22px}.dialog-actions .secondary{background:#edf1ef;color:var(--ink)}.install-page{min-height:100%;padding:40px 16px}.install-card{max-width:500px;margin:0 auto;padding:30px;border-radius:26px;background:white;box-shadow:var(--shadow)}.install-card .brand-mark{margin-left:0}.install-error{padding:12px;border-radius:12px;background:#fff0ed;color:#a13f31}.install-submit{width:100%;margin-top:12px}.install-card .field-label{color:var(--ink)}
@media(min-width:721px){.app-shell{height:calc(100% - 40px);margin-top:20px;border-radius:24px;overflow:hidden;box-shadow:var(--shadow)}}
.message-meta{display:flex;align-items:center;gap:6px;margin:4px 5px 0;color:#96a09b;font-size:10px}.message-meta time{margin:0}.read-count{color:var(--green-dark);font-weight:700}