:root{color-scheme:light;font-family:Inter,system-ui,sans-serif;color:#0f172a;background:#f8fafc}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:#f8fafc}main.app{max-width:960px;margin:0 auto;padding:2.5rem 1.5rem 4rem;display:flex;flex-direction:column;gap:1.5rem}.app__header{display:flex;flex-direction:column;gap:1rem;justify-content:space-between}@media (min-width: 768px){.app__header{flex-direction:row;align-items:center}}.app__brand{display:flex;flex-direction:column;gap:.75rem}.brand-logo-link{display:inline-flex;width:min(560px,100%)}.brand-logo{width:100%;height:auto;display:block}.popup-logo-link{align-self:center;display:inline-flex;margin-top:.25rem}.popup-logo{width:80px;height:auto;display:block;border-radius:8px;box-shadow:0 8px 20px #0f172a33;transition:transform .2s ease}.popup-logo-link:hover .popup-logo{transform:translateY(-1px) scale(1.03)}h1,h2,h3,h4{margin:0 0 .5rem}p{margin:0 0 .75rem}.card{background:#ffffff;padding:1.5rem;border-radius:16px;box-shadow:0 20px 45px #0f172a14;display:flex;flex-direction:column;gap:1rem}.card--muted{background:#f1f5f9}.card--hero{background:linear-gradient(135deg,#f0f9ff,#e0f2fe);border:1px solid #bae6fd}.hero-text{font-size:1rem}details{border-top:1px solid #cbd5e1;padding-top:.75rem}summary{cursor:pointer;font-weight:600;color:#0f172a}.muted{color:#64748b;font-size:.95rem}.list{margin:0;padding-left:1.2rem;display:flex;flex-direction:column;gap:.4rem}.quick-actions{gap:.75rem}.quick-actions__row{display:flex;gap:.75rem;flex-wrap:nowrap;overflow-x:auto}.button{background:#2563eb;color:#fff;border:none;padding:.65rem 1.2rem;border-radius:999px;font-weight:600;cursor:pointer}.button:disabled{opacity:.6;cursor:not-allowed}.button--ghost{background:#e2e8f0;color:#0f172a}.button--danger{background:#dc2626;color:#fff}.button--small{padding:.4rem .8rem;font-size:.82rem}.form-row{display:flex;flex-direction:column;gap:.75rem}.form-row--compact{align-items:center;justify-content:space-between}@media (min-width: 768px){.form-row{flex-direction:row;align-items:center}}input,textarea{flex:1;padding:.6rem .8rem;border-radius:12px;border:1px solid #cbd5f5;font-size:.95rem}.account-box{background:#f8fafc;padding:.75rem 1rem;border-radius:12px;display:flex;flex-direction:column;gap:.4rem}.account-box--row{flex-direction:row;align-items:center;justify-content:space-between;gap:1rem}.account-box__content{display:flex;flex-direction:column;gap:.4rem;min-width:0}.label{text-transform:uppercase;font-size:.7rem;letter-spacing:.08em;color:#94a3b8}.mono{font-family:SFMono-Regular,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,Courier New,monospace;font-size:.85rem;word-break:break-all}.chatroom-list{display:grid;gap:1rem}.chatroom-accordion{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.75rem}.chatroom-item{border:1px solid #e2e8f0;border-radius:12px;overflow:hidden;background:#ffffff}.chatroom-item__toggle{width:100%;border:none;background:transparent;cursor:pointer;padding:1rem;display:flex;align-items:center;justify-content:space-between;gap:1rem;text-align:left}.chatroom-item__left{display:flex;flex-direction:column;gap:.25rem;min-width:0}.chatroom-item__url{font-weight:700;color:#0f172a;word-break:break-word}.chatroom-item__meta{font-size:.85rem}.chatroom-item__right{display:flex;align-items:center;gap:.75rem;flex-shrink:0}.chatroom-item__chevron{font-size:1.1rem;color:#64748b}.chatroom-item__content{border-top:1px solid #e2e8f0;padding:1rem;display:flex;flex-direction:column;gap:.75rem}.chatroom{border:1px solid #e2e8f0;border-radius:12px;padding:1rem;display:flex;flex-direction:column;gap:.75rem}.chatroom__header{display:flex;flex-direction:column;gap:.5rem}@media (min-width: 768px){.chatroom__header{flex-direction:row;justify-content:space-between;align-items:center}}.tag{background:#dcfce7;color:#166534;padding:.35rem .8rem;border-radius:999px;font-size:.75rem;font-weight:600}.tag--danger{background:#fee2e2;color:#991b1b}.code-block{background:#0f172a;color:#e2e8f0;padding:.85rem;border-radius:12px;display:flex;flex-direction:column;gap:.4rem;font-size:.85rem}.code-block code{white-space:pre-wrap}.actions{display:flex;gap:.75rem;flex-wrap:wrap}.status{background:#e0f2fe;color:#075985;padding:.75rem 1rem;border-radius:12px}.toast{position:fixed;top:20px;left:50%;transform:translate(-50%);background:#2563eb;color:#fff;padding:.75rem 1.25rem;border-radius:10px;box-shadow:0 10px 30px #2563eb59;z-index:10001;font-weight:600;text-align:center;min-width:240px;pointer-events:none;animation:none}.preview{display:flex;gap:1rem;align-items:center}.demo-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1rem}.demo-frame-card{display:flex;flex-direction:column;gap:.5rem}.demo-frame-card iframe{width:100%;border:1px solid #dbe3ef;border-radius:12px;background:#ffffff;min-height:420px}.preview__icon{font-size:2rem;background:#2563eb;color:#fff;width:56px;height:56px;border-radius:50%;display:grid;place-items:center}.preview__panel{background:#ffffff;border-radius:12px;padding:.75rem 1rem;flex:1}.footer{text-align:center;padding-top:1rem}.chat-popup{position:relative;padding:1.5rem;display:flex;flex-direction:column;gap:1rem;min-height:100dvh;background:#f8fafc}.chat-popup__header{display:flex;justify-content:space-between;align-items:center;gap:1rem}.chat-popup__panel{background:#ffffff;border-radius:16px;padding:1rem;box-shadow:0 12px 30px #0f172a14;display:flex;flex-direction:column;gap:.75rem}.screen-name-compact{padding:.45rem .6rem;gap:.5rem}.screen-name-compact__label{font-size:.85rem}.chat-popup__messages,.dm-list{max-height:260px;overflow-y:auto;display:flex;flex-direction:column;gap:.75rem}.chat-popup__composer{display:flex;gap:.5rem}.chat-popup__composer input,textarea{flex:1}.message{padding:.75rem;border-radius:12px;background:#f1f5f9}.message__header{display:flex;align-items:baseline;justify-content:space-between;gap:.75rem}.message__meta{font-size:.72rem;color:#64748b;white-space:nowrap;flex-shrink:0}.dm-panel{display:flex;flex-direction:column;gap:1rem}.dm-layout{display:grid;grid-template-columns:minmax(160px,220px) 1fr;gap:1rem}.dm-conversations ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:.5rem}.dm-conversations__button{width:100%;text-align:left;padding:.5rem .75rem;border-radius:10px;border:none;background:#f1f5f9;cursor:pointer;font-weight:600;color:#0f172a}.dm-conversations__button--active{background:#2563eb;color:#fff}.dm-thread{display:flex;flex-direction:column;gap:.75rem}.chat-popup__dm-header{display:flex;justify-content:space-between;align-items:center}.dm-badge{color:#dc2626;margin-left:.25rem;font-size:.95rem;animation:dmBlink 1.1s ease-in-out infinite}.dm-alert{position:sticky;top:0;align-self:flex-end;z-index:3;background:#dc2626;color:#fff;border-radius:999px;font-weight:700;font-size:.75rem;line-height:1;padding:.5rem .7rem;box-shadow:0 8px 20px #dc262659;animation:dmBlink 1.1s ease-in-out infinite}@keyframes dmBlink{0%,to{opacity:1}50%{opacity:.35}}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:rgba(15,23,42,.55);display:grid;place-items:center;z-index:20000;padding:1.5rem}.modal{width:min(520px,100%);background:#ffffff;border-radius:16px;box-shadow:0 24px 70px #0f172a59;padding:1.25rem 1.25rem 1rem;display:flex;flex-direction:column;gap:.75rem}.modal--preview{width:min(920px,100%);padding:1rem}.modal__header{display:flex;align-items:flex-start;justify-content:space-between;gap:1rem}.preview-frame{height:min(720px,75vh);border-radius:12px;overflow:hidden;border:1px solid #e2e8f0}.preview-frame iframe{width:100%;height:100%;border:none;background:#f8fafc}.modal__actions{display:flex;gap:.75rem;justify-content:flex-end;flex-wrap:wrap}@media (max-width: 768px){.chat-popup{padding:1rem}.chat-popup__header{align-items:flex-start;flex-direction:column}.chat-popup__messages,.dm-list{max-height:36dvh}.chat-popup__composer{flex-direction:column}.dm-layout{grid-template-columns:1fr}.preview-frame{height:min(560px,65vh)}}.contact-form{display:flex;flex-direction:column;gap:.75rem}.submission-list{display:flex;flex-direction:column;gap:.6rem}.submission-item{background:#f8fafc;border:1px solid #e2e8f0;border-radius:10px;padding:.65rem .75rem}.submission-item summary{display:flex;align-items:baseline;justify-content:space-between;gap:.75rem;cursor:pointer;font-weight:600}.submission-item__timestamp{font-size:.72rem;color:#64748b;white-space:nowrap;flex-shrink:0;font-weight:500}.screen-name-inline{display:inline-flex;align-items:center;gap:.5rem;flex-wrap:nowrap}.admin-section{display:flex;flex-direction:column;gap:.6rem;padding:.75rem;border:1px solid #e2e8f0;border-radius:12px;background:#f8fafc}.admin-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.4rem}.admin-list__item{display:flex;align-items:center;justify-content:space-between;gap:.5rem}.screen-name-tag{cursor:pointer}