:root{
  color-scheme:light;
  --fg:#263246;--bg:#f4f7fd;--surface:#fff;--surface-soft:#e4edfc;
  --muted:#5d6980;--border:#dfe6f0;--border-hover:#8aa4d0;
  --strong:#3d66b8;--on-strong:#fff;--control-outline:#7488ae;
  --focus-halo:rgb(61 102 184 / 16%);--shadow:0 8px 28px rgb(38 50 70 / 5%);
  --foreground:var(--fg);--background:var(--bg)
}
:root[data-theme=dark]{
  color-scheme:dark;
  --fg:#eff3fb;--bg:#161c27;--surface:#222c3c;--surface-soft:#2b3952;
  --muted:#b8c1d3;--border:#3c4b64;--border-hover:#7693c3;
  --strong:#a6c4ff;--on-strong:#1b2e4c;--control-outline:#94add5;
  --focus-halo:rgb(166 196 255 / 18%);--shadow:0 8px 28px rgb(0 8 24 / 20%)
}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--fg);font-family:-apple-system,BlinkMacSystemFont,"Apple SD Gothic Neo","Noto Sans KR",system-ui,sans-serif;font-size:15px;letter-spacing:-.025em;line-height:1.6}button,input,select,textarea{font:inherit;letter-spacing:inherit}h1,h2,h3,p{overflow-wrap:anywhere}h1{font-size:1.6rem;line-height:1.35;letter-spacing:-.045em;margin:0;font-weight:750}h2{font-size:1.15rem;line-height:1.4;margin:0 0 16px}h3{font-size:1rem;margin:0 0 8px}p{line-height:1.7}a{color:var(--fg);overflow-wrap:anywhere;text-underline-offset:4px}
header{padding:18px max(28px,calc((100vw - 1160px)/2));border-bottom:1px solid var(--border);background:var(--surface);display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap}.brand{display:flex;align-items:center;gap:12px;min-width:0}.brand-mark{display:grid;place-items:center;width:44px;height:44px;flex-shrink:0;border-radius:15px;text-decoration:none}.brand-logo{display:block;width:100%;height:100%}.brand-logo-dark{display:none}html[data-theme=dark] .brand-logo-light{display:none}html[data-theme=dark] .brand-logo-dark{display:block}.brand-caption{display:block;font-size:11px;color:var(--muted);font-weight:650;letter-spacing:.06em;margin-bottom:2px}
nav{display:flex;flex-wrap:wrap;gap:8px}header nav{align-items:center;justify-content:flex-end}header nav>span,header nav>a{display:inline-flex;align-items:center;min-height:42px}header nav>span{font-size:13px;font-weight:650;padding:0 10px}header nav>a{padding:8px 12px;text-decoration:none;border-radius:12px;font-size:13px;color:var(--muted)}header nav>a:hover{background:var(--surface-soft);color:var(--fg)}header nav>button{min-height:40px;font-size:13px;padding:9px 12px}
main{max-width:1160px;margin:auto;padding:36px 28px 56px}.controls{display:flex;gap:10px;flex-wrap:wrap;align-items:center}.panel,.card{background:var(--surface);border:1px solid var(--border);border-radius:22px;padding:24px;margin:0 0 20px;min-width:0;box-shadow:var(--shadow)}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,280px),1fr));gap:18px}.grid .card{margin:0}
button,.button{border:1px solid transparent;border-radius:12px;background:var(--strong);color:var(--on-strong);min-height:44px;padding:11px 16px;font-weight:650;font-size:14px;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:8px;text-decoration:none;line-height:1.4;transition:background .16s,border-color .16s,box-shadow .16s,transform .16s}button:hover,.button:hover{filter:brightness(.93)}button:active,.button:active{transform:translateY(1px)}button.secondary,.button.secondary{background:var(--surface);color:var(--fg);border-color:var(--border)}button.secondary:hover,.button.secondary:hover{background:var(--surface-soft);border-color:var(--border-hover)}button:disabled{opacity:.42;cursor:not-allowed;transform:none;filter:none}.quiet-button{background:var(--surface-soft)!important;border-color:transparent!important}.danger-button{background:var(--surface)!important;color:var(--fg)!important;border:1px dashed var(--control-outline)!important}.danger-button:hover{background:var(--surface-soft)!important}
input,select,textarea{border:1px solid var(--border);border-radius:12px;padding:12px 14px;min-height:46px;background:var(--surface);color:var(--fg);max-width:100%;transition:border-color .16s,box-shadow .16s}input:not([type=checkbox]):not([type=radio]),textarea,select{width:100%}input::placeholder,textarea::placeholder{color:var(--muted);opacity:1}input:focus,textarea:focus,select:focus{border-color:var(--strong);box-shadow:0 0 0 3px var(--focus-halo)}input[type=checkbox],input[type=radio]{width:18px;height:18px;min-height:18px;padding:0;accent-color:var(--strong);flex-shrink:0}label{display:block;font-weight:650;font-size:13px;margin:16px 0 7px}.check{display:flex;gap:10px;align-items:center;cursor:pointer;font-weight:550}.check input{margin:0}fieldset{margin:20px 0 12px;border:1px solid var(--border);padding:12px 16px;border-radius:16px}legend{font-size:13px;font-weight:650;padding:0 6px}fieldset .check{margin:8px 0}
button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid var(--strong);outline-offset:3px}.muted,.hint{color:var(--muted);font-size:13px}.status{min-height:1.6em;white-space:pre-wrap;font-size:13px;color:var(--muted)}.status:empty{min-height:0;margin:0}.text{white-space:pre-wrap;overflow-wrap:anywhere}ol{padding-left:24px}li{padding:12px 0;border-top:1px solid var(--border)}mark{background:var(--strong);color:var(--on-strong);border-radius:3px}code{overflow-wrap:anywhere}#global-status{margin:0;padding:0 28px}#global-status:not(:empty){padding:12px 28px;background:var(--surface-soft)}
dialog{width:min(560px,calc(100% - 32px));max-height:calc(100dvh - 32px);overflow:auto;border:1px solid var(--border);border-radius:24px;padding:28px;background:var(--surface);color:var(--fg);box-shadow:0 24px 100px rgb(0 0 0 / 22%)}dialog::backdrop{background:rgb(20 20 25 / 42%);backdrop-filter:blur(5px)}dialog h2{font-size:1.35rem;letter-spacing:-.04em}dialog .controls{margin-top:20px;justify-content:flex-end}dialog p{font-size:13px;color:var(--muted);margin:8px 0}.narrow{max-width:520px;margin:auto}[hidden]{display:none!important}
.icon-control::before{content:"";width:17px;height:17px;flex-shrink:0;background:currentColor;mask:var(--icon) center/contain no-repeat}.emoji{filter:grayscale(1);object-fit:contain;user-select:none;pointer-events:none}.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--muted);font-size:11px;font-weight:750;letter-spacing:.11em;text-transform:uppercase}.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:currentColor}
.auth-shell{max-width:1060px;padding-top:60px;display:grid;grid-template-columns:1.1fr 1fr;gap:64px;align-items:center}.auth-story{position:relative;padding:12px 0}.auth-story h2{font-size:clamp(2rem,4.2vw,3.3rem);line-height:1.3;letter-spacing:-.065em;margin:18px 0}.auth-story>p{max-width:340px;color:var(--muted);font-size:15px}.auth-art{position:relative;height:240px;max-width:380px;margin:24px 0;background:radial-gradient(ellipse at center,var(--surface-soft) 0,transparent 68%)}.auth-art .speech{width:210px;height:210px;position:absolute;left:50px;top:8px;transform:rotate(-8deg);filter:grayscale(1) drop-shadow(0 22px 20px rgb(0 0 0 / 9%))}.auth-art .wave{width:112px;height:112px;position:absolute;right:22px;bottom:18px;transform:rotate(12deg)}.auth-art .sparkles{width:60px;height:60px;position:absolute;left:0;top:0}.auth-story .benefits{display:flex;flex-wrap:wrap;gap:8px}.benefits span{font-size:12px;border:1px solid var(--border);border-radius:50px;padding:6px 12px;background:var(--surface)}#login-form{padding:32px;border-radius:26px;margin:0}#login-form h2{font-size:1.5rem;margin-bottom:8px}#login-form .auth-description{margin:0 0 24px;color:var(--muted);font-size:13px}#login-form .controls{display:grid;grid-template-columns:1fr;margin-top:20px}#login-submit{min-height:48px}#signup-toggle{background:transparent;border:0;box-shadow:none;color:var(--muted);font-size:13px}#login-form .password-hint{font-size:11px;color:var(--muted);margin:10px 0}
.page-intro{display:flex;justify-content:space-between;align-items:center;gap:24px;margin-bottom:28px}.page-intro h2{font-size:2rem;letter-spacing:-.055em;margin:8px 0}.page-intro p{margin:0;color:var(--muted)}.intro-art{width:120px;height:120px;flex-shrink:0;filter:grayscale(1) drop-shadow(0 14px 12px rgb(0 0 0 / 7%))}.lobby-tools{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:20px}.lobby-filters{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:18px;align-items:center;background:var(--surface);border:1px solid var(--border);border-radius:18px;padding:16px 18px;margin-bottom:14px}.search-field{position:relative}.search-field label{margin:0 0 6px}.search-field input{padding-left:42px;background:var(--bg);border-color:transparent}.search-field::after{content:"";position:absolute;left:14px;bottom:15px;width:18px;height:18px;background:var(--muted);mask:url('/assets/design/icons/search.svg') center/contain no-repeat}.lobby-filters .check{margin:20px 0 0;font-size:13px}.lobby-guidance{margin:0 0 16px;font-size:12px;color:var(--muted)}#rooms-status{margin:12px 2px 18px}
.rooms-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;align-items:stretch}.rooms-grid .room-card{margin:0;display:flex;flex-direction:column;gap:20px;position:relative;transition:border-color .18s,box-shadow .18s}.room-card:hover{border-color:var(--border-hover);box-shadow:0 12px 32px var(--focus-halo)}.room-details{flex:1;min-width:0}.room-topline{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:20px}.room-symbol{width:42px;height:42px;border-radius:14px;background:var(--surface-soft);display:grid;place-items:center}.room-symbol::before{content:"";width:21px;height:21px;background:var(--strong);mask:url('/assets/design/icons/message-circle.svg') center/contain no-repeat}.room-badge{padding:4px 9px;border-radius:50px;background:var(--surface-soft);color:var(--strong);font-size:11px;font-weight:650}.room-details h2{margin:0 0 8px;font-size:1.2rem}.room-details p{margin:7px 0;font-size:13px;color:var(--muted)}.room-details .room-topic{color:var(--fg);margin:10px 0 18px;font-size:14px}.room-code{font-variant-numeric:tabular-nums;font-size:11px!important;letter-spacing:.015em}.room-actions{display:flex;align-items:center;border-top:1px solid var(--border);padding-top:16px}.room-actions .button{width:100%;text-align:center;white-space:nowrap;min-height:42px}.empty-state{grid-column:1/-1;text-align:center;padding:44px 24px;background:var(--surface);border:1px dashed var(--border);border-radius:22px}.empty-state img{width:100px;height:100px}.empty-state h3{font-size:1.1rem;margin:10px 0}.empty-state p{font-size:13px;color:var(--muted);margin:6px 0}
.join-shell{padding-top:56px;max-width:550px}.join-art{text-align:center;margin-bottom:20px}.join-art img{width:100px;height:100px}.join-art p{font-size:13px;color:var(--muted);margin:6px 0}.join-shell .panel>h2{font-size:1.5rem}.join-shell .panel .controls{margin-top:20px}.join-shell #join-submit{width:100%}.join-shell form>a{display:flex;justify-content:center;margin-top:16px;color:var(--muted);font-size:13px}
.stats{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:12px}.stats p{border:1px solid var(--border);background:var(--bg);border-radius:16px;padding:18px;margin:0;display:flex;flex-direction:column;gap:4px;font-size:12px;color:var(--muted)}.stats strong{font-size:1.8rem;line-height:1.35;color:var(--fg);font-weight:700;letter-spacing:-.04em}.stats .stat-health strong{font-size:15px;margin-top:10px}.stats-panel{padding:26px}.stats-panel #stats-refresh{margin-top:16px}.stats-heading{display:flex;align-items:center;gap:12px;margin-bottom:20px}.stats-heading img{width:42px;height:42px}.stats-heading h2{margin:0}.admin-intro{margin-bottom:24px}.admin-intro h2{font-size:1.65rem;margin-bottom:8px}.admin-intro p{color:var(--muted);font-size:13px;margin:0}#tabs{padding:6px;background:var(--surface-soft);border-radius:15px;width:fit-content;margin:24px 0 16px}#tabs button{background:transparent;color:var(--muted);border:0;min-height:42px}#tabs button[aria-pressed=true],#tabs button:not(.secondary){background:var(--surface);color:var(--strong);box-shadow:0 2px 6px rgb(0 0 0 / 6%)}#search-controls{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:10px;align-items:end}#search-controls label{grid-column:1/-1;margin:0}#search-controls button{height:46px}.record{border:1px solid var(--border);border-radius:16px;padding:18px;margin:12px 0;background:var(--bg);min-width:0}.record h3{margin:0 0 7px}.record p{margin:6px 0;font-size:13px;color:var(--muted)}.record .text{color:var(--fg);font-size:15px}.record .controls{margin-top:12px}.record button{font-size:12px;min-height:38px;padding:9px 12px}#pagination{justify-content:center;margin:22px 0 0}#page-label{font-size:12px;color:var(--muted);padding:0 8px}#restore-form{border-top:1px solid var(--border);padding-top:20px;margin-top:24px}#restore-form input[type=file]{background:var(--bg)}
@media(min-width:1100px){.rooms-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:900px){.auth-shell{gap:32px}.stats{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:767px){header{padding:16px 20px;gap:14px}header nav{justify-content:flex-start;width:100%;gap:6px}header nav>span{padding-left:0}header nav>button{min-height:38px;padding:8px 12px}header nav>a{min-height:38px;padding:8px}h1{font-size:1.3rem}.brand-mark{width:38px;height:38px;border-radius:13px}.brand-caption{font-size:10px}main{padding:24px 20px 40px}.panel,.card{padding:20px;border-radius:20px}.auth-shell{display:block;padding-top:28px;max-width:520px}.auth-story{padding:0 4px}.auth-story h2{font-size:2rem;margin:10px 0}.auth-story>p{font-size:13px;max-width:290px}.auth-art{height:110px;width:150px;position:absolute;right:0;top:42px;margin:0;opacity:.95}.auth-art .speech{width:100px;height:100px;left:24px;top:0}.auth-art .wave{width:56px;height:56px;right:0;bottom:0}.auth-art .sparkles{width:28px;height:28px}.auth-story .benefits{margin:16px 0 24px}.auth-story>p{max-width:65%}#login-form{padding:24px}.page-intro{gap:12px;margin-bottom:24px}.page-intro h2{font-size:1.6rem}.page-intro p{font-size:13px}.intro-art{width:80px;height:80px}.lobby-tools{margin-bottom:16px}.lobby-filters{display:block;padding:14px}.lobby-filters .check{margin:14px 0 0}.rooms-grid{display:block}.rooms-grid .room-card{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:12px;margin:0;padding:20px 0;border:0;border-radius:0;border-bottom:1px solid var(--border);box-shadow:none;background:transparent}.rooms-grid .room-card:first-child{border-top:1px solid var(--border)}.room-topline{margin-bottom:10px;justify-content:flex-start}.room-symbol{width:30px;height:30px;border-radius:10px}.room-symbol::before{width:16px;height:16px}.room-details h2{font-size:1rem}.room-details p{font-size:12px}.room-details .room-topic{font-size:13px;margin:8px 0 10px}.room-actions{align-self:center;border:0;padding:0}.room-actions .button{padding:10px 12px;font-size:12px;width:auto}.room-actions .icon-control::before{display:none}.stats{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.stats p{padding:14px}.stats strong{font-size:1.5rem}.stats .stat-health{grid-column:1/-1}.stats .stat-health strong{margin-top:0}.stats-panel{padding:18px}#tabs{width:100%;gap:4px}#tabs button{font-size:12px;padding:10px;flex:1;white-space:nowrap;gap:5px}#tabs .icon-control::before{display:none}#search-controls{grid-template-columns:1fr auto}.record{padding:16px}.record .controls{gap:7px}dialog{padding:22px;border-radius:22px}dialog .controls>button{flex:1}.join-shell{padding-top:30px}}
@media(max-width:360px){.auth-art{opacity:.4}.auth-story>p{max-width:100%}.room-actions .button{padding:9px;font-size:11px}header nav{gap:3px}header nav>a,header nav>button{font-size:12px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{transition:none!important;animation:none!important;scroll-behavior:auto!important}}

.auth-art .smile{position:absolute;width:90px;height:90px;left:140px;top:90px;transform:rotate(-8deg);filter:grayscale(1) drop-shadow(0 8px 6px rgb(0 0 0 / 5%))}@media(max-width:767px){.auth-art .smile{width:42px;height:42px;left:68px;top:38px}}
input,select,textarea{font-size:16px}[role=alert]:not(:empty){padding:10px 12px;background:var(--surface-soft);border-left:3px solid var(--fg);border-radius:8px;color:var(--fg);font-weight:600}

.room-access-code{-webkit-text-security:disc}

#database-controls{margin-bottom:20px}#database-create{margin-top:12px}.database-record dl{display:grid;grid-template-columns:minmax(100px,1fr) minmax(0,3fr);gap:6px 16px;font-size:13px}.database-record dt{font-weight:650;overflow-wrap:anywhere}.database-record dd{margin:0;white-space:pre-wrap;overflow-wrap:anywhere;max-height:12rem;overflow:auto}#database-record-form textarea{min-height:120px}#database-record-form .check{margin:8px 0 16px}@media(max-width:767px){.database-record dl{grid-template-columns:minmax(80px,1fr) minmax(0,2fr)}}

/* Shared product signature, kept separate from the current page or room title. */
.brand-caption{display:flex;align-items:center;gap:7px;letter-spacing:0;margin-bottom:3px}.brand-name{font-size:13px;font-weight:750;color:var(--fg);white-space:nowrap}.brand-beta{display:inline-flex;align-items:center;padding:2px 6px;border:1px solid var(--border);border-radius:6px;background:var(--surface-soft);color:var(--strong);font-size:10px;font-weight:700;line-height:1.2;white-space:nowrap}@media(max-width:767px){.brand-name{font-size:12px}.brand-caption{gap:6px}}

.brand-prominent .brand-caption{margin-bottom:0;gap:9px}.brand-prominent .brand-name{font-size:1.6rem;line-height:1.35;letter-spacing:-.045em}.brand-prominent .brand-beta{font-size:11px;padding:3px 7px}.brand-context{display:block;color:var(--muted);font-size:12px;margin-top:2px}@media(max-width:767px){.brand-prominent .brand-name{font-size:1.3rem}}