:root{--primary: #4f46e5;--primary-strong: #4338ca;--primary-soft: rgba(79, 70, 229, .1);--accent: #0ea5e9;--bg: #f4f5fb;--bg-gradient: radial-gradient(1200px 600px at 80% -10%, rgba(79, 70, 229, .08), transparent 60%), radial-gradient(900px 500px at -10% 30%, rgba(14, 165, 233, .07), transparent 55%);--surface: #ffffff;--surface-2: #f8f9fd;--border: #e5e7f0;--text: #10122b;--text-muted: #6b7280;--text-soft: #9ca3af;--success: #10b981;--danger: #ef4444;--warning: #f59e0b;--bubble-other: #eef0f8;--bubble-own: linear-gradient(135deg, #4f46e5, #4338ca);--shadow-sm: 0 1px 2px rgba(16, 18, 43, .05);--shadow-md: 0 8px 24px rgba(16, 18, 43, .08);--shadow-lg: 0 18px 48px rgba(16, 18, 43, .16);--radius: 16px;--radius-sm: 10px;--radius-full: 999px;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Noto Sans Thai,Sarabun,Arial,sans-serif;line-height:1.5;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;-webkit-tap-highlight-color:transparent;color-scheme:light dark}@media(prefers-color-scheme:dark){:root{--bg: #0d0f1e;--bg-gradient: radial-gradient(1200px 600px at 80% -10%, rgba(99, 102, 241, .12), transparent 60%), radial-gradient(900px 500px at -10% 30%, rgba(14, 165, 233, .08), transparent 55%);--surface: #171a2e;--surface-2: #1e2138;--border: #2a2e4a;--text: #eceef8;--text-muted: #9aa0b5;--text-soft: #6b7186;--primary-soft: rgba(99, 102, 241, .18);--bubble-other: #23273f;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .3);--shadow-md: 0 8px 24px rgba(0, 0, 0, .35);--shadow-lg: 0 18px 48px rgba(0, 0, 0, .5)}}*,*:before,*:after{box-sizing:border-box}html,body{height:100%}body{margin:0;min-width:320px;color:var(--text);background:var(--bg);background-image:var(--bg-gradient);background-attachment:fixed}#root{height:100%}h1,h2,h3,h4,p{margin:0}button{font-family:inherit;font-size:inherit;color:inherit;background:none;border:none;padding:0;cursor:pointer}input,textarea,select{font-family:inherit;font-size:inherit;color:inherit}a{color:var(--primary);text-decoration:none}img{max-width:100%;display:block}::selection{background:var(--primary-soft)}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-md)}.muted{color:var(--text-muted)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:600;font-size:15px;padding:10px 18px;border-radius:var(--radius-sm);border:1px solid transparent;transition:transform .15s ease,box-shadow .15s ease,background .15s ease,opacity .15s ease;-webkit-user-select:none;user-select:none;white-space:nowrap}.btn:active{transform:scale(.97)}.btn:disabled{opacity:.55;cursor:not-allowed;transform:none}.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-strong));color:#fff;box-shadow:0 6px 16px #4f46e559}.btn-primary:not(:disabled):hover{box-shadow:0 8px 22px #4f46e573}.btn-secondary{background:var(--surface);color:var(--text);border-color:var(--border);box-shadow:var(--shadow-sm)}.btn-secondary:not(:disabled):hover{background:var(--surface-2)}.btn-danger{background:var(--danger);color:#fff}.btn-danger:not(:disabled):hover{background:#dc2626}.btn-lg{font-size:16px;padding:14px 26px;border-radius:14px}.btn-sm{font-size:13px;padding:7px 12px}.btn-block{width:100%}.icon-btn{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:var(--radius-sm);color:var(--text-muted);transition:background .15s ease,color .15s ease,transform .1s ease;flex-shrink:0}.icon-btn:hover{background:var(--primary-soft);color:var(--primary)}.icon-btn:active{transform:scale(.94)}.icon-btn:disabled{opacity:.45}.input{width:100%;padding:12px 14px;border-radius:var(--radius-sm);border:1.5px solid var(--border);background:var(--surface);color:var(--text);font-size:16px;outline:none;transition:border-color .15s ease,box-shadow .15s ease}.input:focus{border-color:var(--primary);box-shadow:0 0 0 4px var(--primary-soft)}.input::placeholder{color:var(--text-soft)}.field{display:flex;flex-direction:column;gap:7px}.field-label{font-size:13px;font-weight:600;color:var(--text-muted);display:inline-flex;align-items:center;gap:5px}.field-toggle{flex-direction:row;align-items:center;justify-content:space-between}.switch{appearance:none;width:46px;height:27px;border-radius:var(--radius-full);background:var(--border);position:relative;cursor:pointer;transition:background .2s ease;flex-shrink:0;margin:0}.switch:after{content:"";position:absolute;top:3px;left:3px;width:21px;height:21px;border-radius:50%;background:#fff;box-shadow:0 1px 3px #00000040;transition:transform .2s ease}.switch:checked{background:var(--primary)}.switch:checked:after{transform:translate(19px)}.chip-row{display:flex;flex-wrap:wrap;gap:8px}.chip{padding:8px 14px;border-radius:var(--radius-full);border:1.5px solid var(--border);background:var(--surface);font-size:13.5px;font-weight:600;color:var(--text-muted);transition:all .15s ease}.chip:hover{border-color:var(--primary);color:var(--primary)}.chip-active{background:var(--primary);border-color:var(--primary);color:#fff}.pill{display:inline-flex;align-items:center;gap:5px;padding:5px 11px;border-radius:var(--radius-full);background:var(--surface-2);border:1px solid var(--border);font-size:13px;font-weight:600;color:var(--text-muted)}.pill-lock{color:var(--warning)}.pill-timer{font-variant-numeric:tabular-nums}.pill-danger{color:var(--danger);border-color:#ef444459;background:#ef444414;animation:pulse-danger 1.4s ease-in-out infinite}@keyframes pulse-danger{50%{opacity:.65}}.spinner{width:17px;height:17px;border:2.5px solid rgba(255,255,255,.35);border-top-color:#fff;border-radius:50%;animation:spin .8s linear infinite;flex-shrink:0}.spinner-lg{width:34px;height:34px;border-width:3.5px;border-color:var(--border);border-top-color:var(--primary)}@keyframes spin{to{transform:rotate(360deg)}}.avatar{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:50%;color:#fff;font-size:12px;font-weight:700;position:relative;flex-shrink:0}.avatar-sm{width:28px;height:28px;font-size:10px}.online-dot{position:absolute;bottom:-1px;right:-1px;width:10px;height:10px;border-radius:50%;background:var(--success);border:2px solid var(--surface)}.toast-stack{position:fixed;top:calc(env(safe-area-inset-top,0px) + 14px);left:50%;transform:translate(-50%);z-index:1100;display:flex;flex-direction:column;gap:8px;width:min(92vw,400px);pointer-events:none}.toast{display:flex;align-items:center;gap:10px;padding:12px 14px;border-radius:13px;background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow-lg);font-size:14px;font-weight:500;animation:toast-in .25s ease;pointer-events:auto}@keyframes toast-in{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.toast-success .toast-icon{color:var(--success)}.toast-error .toast-icon{color:var(--danger)}.toast-warning .toast-icon{color:var(--warning)}.toast-info .toast-icon{color:var(--accent)}.toast-icon{flex-shrink:0}.toast-message{flex:1}.toast-close{color:var(--text-soft);font-size:20px;line-height:1;padding:0 4px}.sheet-overlay{position:fixed;inset:0;background:#090a1a8c;-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);z-index:1000;display:flex;align-items:flex-end;justify-content:center;animation:fade-in .2s ease}@keyframes fade-in{0%{opacity:0}}.sheet{background:var(--surface);width:100%;max-height:88dvh;border-radius:22px 22px 0 0;display:flex;flex-direction:column;animation:sheet-up .28s cubic-bezier(.32,.72,.22,1);overflow:hidden}@keyframes sheet-up{0%{transform:translateY(60%);opacity:.5}}.sheet-header{position:relative;padding:22px 56px 10px 22px;flex-shrink:0}.sheet-grabber{position:absolute;top:8px;left:50%;transform:translate(-50%);width:40px;height:4px;border-radius:var(--radius-full);background:var(--border)}.sheet-title{font-size:18px;font-weight:700}.sheet-close{position:absolute;top:14px;right:12px}.sheet-body{padding:8px 22px calc(env(safe-area-inset-bottom,0px) + 24px);overflow-y:auto}@media(min-width:640px){.sheet-overlay{align-items:center;padding:24px}.sheet{max-width:420px;border-radius:20px;max-height:82vh;animation:modal-in .22s ease;box-shadow:var(--shadow-lg)}.sheet-wide{max-width:520px}.sheet-grabber{display:none}.sheet-header{padding-top:20px}.sheet-body{padding-bottom:24px}@keyframes modal-in{0%{transform:scale(.94) translateY(10px);opacity:0}}}.page{min-height:100dvh;display:flex;flex-direction:column}.landing-header{padding:calc(env(safe-area-inset-top,0px) + 18px) 22px 12px;max-width:1080px;width:100%;margin:0 auto}.brand{display:inline-flex;align-items:center;gap:11px;color:inherit}.brand-mark{display:flex;align-items:center;justify-content:center;width:42px;height:42px;border-radius:13px;background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;box-shadow:0 6px 14px #4f46e559}.brand-text{display:flex;flex-direction:column;line-height:1.2}.brand-name{font-size:19px;font-weight:800;letter-spacing:-.3px}.brand-tag{font-size:12px;color:var(--text-muted)}.landing-main{flex:1;width:100%;max-width:1080px;margin:0 auto;padding:20px 22px 40px;display:flex;flex-direction:column;gap:48px}.hero{text-align:center;padding-top:4vh;display:flex;flex-direction:column;align-items:center}.hero-title{font-size:clamp(34px,7vw,58px);font-weight:800;letter-spacing:-1.5px;line-height:1.08}.hero-accent{background:linear-gradient(100deg,var(--primary),var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent}.hero-sub{margin-top:16px;max-width:560px;font-size:clamp(15px,2.5vw,17px);color:var(--text-muted)}.hero-actions{margin-top:34px;display:flex;flex-direction:column;align-items:center;gap:18px;width:100%;max-width:360px}.hero-actions .btn-primary{width:100%}.join-divider{display:flex;align-items:center;gap:12px;width:100%;color:var(--text-soft);font-size:13px}.join-divider:before,.join-divider:after{content:"";flex:1;height:1px;background:var(--border)}.join-form{display:flex;gap:10px;width:100%}.join-code-input{flex:1;min-width:0;padding:13px 16px;border-radius:14px;border:1.5px solid var(--border);background:var(--surface);color:var(--text);font-size:20px;font-weight:700;letter-spacing:.35em;text-align:center;text-transform:uppercase;outline:none;transition:border-color .15s ease,box-shadow .15s ease}.join-code-input:focus{border-color:var(--primary);box-shadow:0 0 0 4px var(--primary-soft)}.join-code-input::placeholder{color:var(--text-soft);letter-spacing:.35em;font-weight:600}.join-submit{padding:0 18px;border-radius:14px}.features{display:grid;grid-template-columns:1fr;gap:14px}.feature{display:flex;gap:14px;align-items:flex-start;padding:18px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-sm)}.feature-icon{display:flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:12px;background:var(--primary-soft);color:var(--primary);flex-shrink:0}.feature-body h3{font-size:15px;font-weight:700}.feature-body p{font-size:13.5px;color:var(--text-muted);margin-top:3px}.landing-footer{text-align:center;padding:26px 22px calc(env(safe-area-inset-bottom,0px) + 26px);color:var(--text-muted);font-size:14px}.landing-footer small{display:block;margin-top:6px;color:var(--text-soft);font-size:12px}@media(min-width:720px){.features{grid-template-columns:repeat(4,1fr)}.feature{flex-direction:column}}.create-form{display:flex;flex-direction:column;gap:18px;padding-top:6px}.share-banner{background:var(--primary-soft);border:1.5px solid var(--primary);color:var(--primary);border-radius:var(--radius);padding:13px 16px;font-size:14px;font-weight:600;text-align:center;animation:toast-in .3s ease}.gate-main{flex:1;display:flex;align-items:flex-start;justify-content:center;padding:6vh 22px 40px}.gate-card{width:100%;max-width:400px;padding:30px 26px;display:flex;flex-direction:column;align-items:center;gap:14px;text-align:center}.gate-loading{gap:18px;color:var(--text-muted);padding:48px 26px}.gate-icon-muted{display:flex;align-items:center;justify-content:center;width:58px;height:58px;border-radius:50%;background:var(--surface-2);color:var(--text-soft)}.gate-notfound h2{font-size:21px}.gate-notfound .btn{margin-top:8px}.gate-room-code{font-size:34px;font-weight:800;letter-spacing:.3em;margin-right:-.3em;color:var(--primary)}.gate-meta{display:flex;flex-wrap:wrap;gap:8px;justify-content:center}.gate-form{width:100%;display:flex;flex-direction:column;gap:16px;margin-top:8px;text-align:left}.room-shell{height:100dvh;display:flex;flex-direction:column;overflow:hidden}.room-header{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:calc(env(safe-area-inset-top,0px) + 10px) 14px 10px;flex-shrink:0}.room-id{display:flex;align-items:center;gap:8px;min-width:0}.room-code-chip{display:inline-flex;align-items:center;gap:6px;font-size:16px;font-weight:800;letter-spacing:.12em;color:var(--primary);background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow-sm);padding:7px 13px;border-radius:var(--radius-sm);transition:background .15s ease}.room-code-chip:hover{background:var(--primary-soft)}.room-code-chip svg{color:var(--text-soft)}.room-actions{display:flex;align-items:center;gap:4px}.badge-holder{position:relative}.badge{position:absolute;top:2px;right:2px;min-width:16px;height:16px;padding:0 4px;border-radius:var(--radius-full);background:var(--primary);color:#fff;font-size:10px;font-weight:700;display:flex;align-items:center;justify-content:center}.badge-ok{background:var(--success)}.room-body{flex:1;display:flex;gap:14px;padding:0 14px calc(env(safe-area-inset-bottom,0px) + 12px);min-height:0;max-width:1180px;width:100%;margin:0 auto}.chat-panel{flex:1;display:flex;flex-direction:column;min-width:0;min-height:0;position:relative;overflow:hidden}.chat-scroll{flex:1;overflow-y:auto;padding:16px 14px 8px;display:flex;flex-direction:column;gap:10px;overscroll-behavior:contain;-webkit-overflow-scrolling:touch}.invite-card{align-self:center;margin:auto 0;display:flex;flex-direction:column;align-items:center;gap:12px;text-align:center;padding:26px 22px;background:var(--surface-2);border:1.5px dashed var(--border);border-radius:var(--radius);max-width:320px}.invite-card h3{font-size:17px}.invite-card .qr-canvas{border-radius:12px}.invite-actions{display:flex;gap:10px}.system-row{display:flex;justify-content:center}.system-pill{font-size:12px;color:var(--text-muted);background:var(--surface-2);border-radius:var(--radius-full);padding:4px 12px}.msg-row{display:flex;gap:9px;align-items:flex-end;max-width:82%}.msg-row.own{align-self:flex-end;flex-direction:row-reverse}.msg-stack{display:flex;flex-direction:column;gap:3px;min-width:0}.msg-row.own .msg-stack{align-items:flex-end}.msg-meta{display:flex;gap:8px;align-items:baseline;padding:0 4px}.msg-sender{font-size:12px;font-weight:700;color:var(--text-muted)}.msg-time{font-size:11px;color:var(--text-soft)}.bubble{padding:9px 14px;border-radius:16px 16px 16px 5px;background:var(--bubble-other);font-size:14.5px;word-break:break-word;white-space:pre-wrap;width:fit-content;max-width:100%}.bubble-own{background:var(--bubble-own);color:#fff;border-radius:16px 16px 5px}.bubble-file{padding:8px;min-width:210px}.bubble-img-link{display:block}.bubble-img{border-radius:11px;max-height:240px;object-fit:cover;margin-bottom:6px}.bubble-file-row{display:flex;align-items:center;gap:10px;padding:2px 4px}.file-glyph{font-size:24px;flex-shrink:0}.file-meta{flex:1;min-width:0;display:flex;flex-direction:column}.file-name{font-size:13.5px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.file-sub{font-size:12px;color:var(--text-muted)}.bubble-own .file-sub{color:#ffffffbf}.bubble-own .icon-btn{color:#ffffffe6}.bubble-own .icon-btn:hover{background:#ffffff26;color:#fff}.upload-bubble{display:flex;gap:10px;align-items:center;background:var(--surface-2);border:1px solid var(--border);border-radius:14px;padding:10px 14px;min-width:230px;color:var(--text-muted)}.upload-info{flex:1;min-width:0;display:flex;flex-direction:column;gap:4px}.upload-name{font-size:13px;font-weight:600;color:var(--text);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.upload-pct{font-size:11.5px}.progress-track{height:5px;background:var(--border);border-radius:var(--radius-full);overflow:hidden}.progress-fill{height:100%;background:linear-gradient(90deg,var(--primary),var(--accent));border-radius:var(--radius-full);transition:width .2s ease}.new-msgs-chip{position:absolute;bottom:118px;left:50%;transform:translate(-50%);display:flex;align-items:center;gap:6px;background:var(--primary);color:#fff;font-size:13px;font-weight:600;padding:7px 14px;border-radius:var(--radius-full);box-shadow:var(--shadow-md);z-index:5;animation:toast-in .2s ease}.typing-row{display:flex;align-items:center;gap:8px;padding:4px 18px;font-size:12.5px;color:var(--text-muted)}.typing-dots{display:inline-flex;gap:3px}.typing-dots i{width:5px;height:5px;border-radius:50%;background:var(--text-soft);animation:typing-bounce 1.2s infinite}.typing-dots i:nth-child(2){animation-delay:.15s}.typing-dots i:nth-child(3){animation-delay:.3s}@keyframes typing-bounce{30%{transform:translateY(-4px);opacity:1}}.composer{display:flex;align-items:flex-end;gap:6px;padding:10px 12px;border-top:1px solid var(--border);background:var(--surface);flex-shrink:0}.composer-input{flex:1;min-width:0;resize:none;border:1.5px solid var(--border);background:var(--surface-2);border-radius:14px;padding:10px 14px;font-size:16px;line-height:1.45;max-height:120px;outline:none;transition:border-color .15s ease}.composer-input:focus{border-color:var(--primary)}.composer-send:not(:disabled){color:var(--primary)}.composer-send:not(:disabled):hover{background:var(--primary-soft)}.drop-overlay{position:fixed;inset:0;z-index:900;background:#4f46e524;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);display:flex;align-items:center;justify-content:center;pointer-events:none}.drop-inner{display:flex;flex-direction:column;align-items:center;gap:12px;background:var(--surface);border:2px dashed var(--primary);color:var(--primary);border-radius:22px;padding:38px 52px;font-size:17px;font-weight:700;box-shadow:var(--shadow-lg)}.room-sidebar{display:none;width:300px;flex-direction:column;gap:14px;overflow-y:auto;flex-shrink:0;padding-bottom:2px}.sidebar-card{padding:16px;flex-shrink:0}.sidebar-title{display:flex;align-items:center;gap:7px;font-size:14px;font-weight:700;color:var(--text-muted);margin-bottom:12px}.share-panel{display:flex;flex-direction:column;align-items:center;gap:10px}.share-qr-wrap{background:#fff;padding:10px;border-radius:14px;border:1px solid var(--border);line-height:0}.qr-canvas{max-width:100%;height:auto;border-radius:6px}.share-qr-placeholder{background:var(--surface-2);border-radius:6px}.share-code{font-size:24px;font-weight:800;letter-spacing:.28em;margin-right:-.28em;color:var(--primary);padding:4px 10px;border-radius:var(--radius-sm);transition:background .15s ease}.share-code:hover{background:var(--primary-soft)}.share-hint{font-size:12.5px;color:var(--text-muted)}.share-actions{display:flex;gap:10px;margin-top:4px}.files-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:6px}.file-row{display:flex;align-items:center;gap:11px;padding:9px 10px;border-radius:var(--radius-sm);background:var(--surface-2);border:1px solid var(--border)}.file-thumb{width:40px;height:40px;border-radius:9px;object-fit:cover;flex-shrink:0}.panel-empty{display:flex;flex-direction:column;align-items:center;gap:6px;padding:26px 10px;color:var(--text-soft);text-align:center}.panel-empty p{font-weight:600;color:var(--text-muted)}.panel-empty span{font-size:12.5px}.members-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:6px}.member-row{display:flex;align-items:center;gap:11px;padding:8px 10px;border-radius:var(--radius-sm);background:var(--surface-2);border:1px solid var(--border);font-size:14px;font-weight:500}.member-you{border-color:var(--primary);background:var(--primary-soft)}.member-name em{font-style:normal;color:var(--text-muted);font-size:12.5px}.leave-copy{padding:4px 0 18px;font-size:14.5px}.leave-actions{display:flex;gap:10px}.leave-actions .btn{flex:1}.desktop-only-inline{display:none}@media(min-width:960px){.room-sidebar{display:flex}.mobile-only{display:none!important}.desktop-only-inline{display:inline}.room-header{max-width:1180px;width:100%;margin:0 auto;padding-left:14px;padding-right:14px}.msg-row{max-width:68%}.new-msgs-chip{bottom:96px}}