/* AI Universe app — mobile-first SPA */
:root{
  --bg:#11152B; --bg2:#0B0E1F; --card:rgba(255,255,255,.06); --card2:rgba(255,255,255,.10);
  --border:rgba(255,255,255,.12); --text:#F2F4FF; --muted:#A7AECB; --muted2:#7C84A3;
  --purple:#7657FF; --purple2:#9B7BFF; --cyan:#29C7D8; --blue:#4E8DFF;
  --green:#2FD67A; --amber:#FFB224; --red:#FF5C6C; --grey:#8A90A6; --radius:18px;
  --font:'Inter','Manrope',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
}
[data-theme="light"]{--bg:#F4F6FF;--bg2:#FFFFFF;--card:#FFFFFF;--card2:#EEF1FF;--border:rgba(17,21,43,.13);--text:#141A33;--muted:#4A5170;--muted2:#6B7194}
*{box-sizing:border-box;margin:0;padding:0}
body{background:var(--bg);color:var(--text);font-family:var(--font);font-size:15px;line-height:1.55;-webkit-tap-highlight-color:transparent}
a{color:var(--cyan);text-decoration:none}
button{font-family:var(--font);cursor:pointer;border:none;background:none;color:inherit}
input,select,textarea{font-family:var(--font);font-size:15px;color:var(--text);background:var(--card2);border:1px solid var(--border);border-radius:12px;padding:11px 13px;width:100%}
input:focus,select:focus,textarea:focus{outline:2px solid var(--purple);outline-offset:1px}
#app{max-width:1060px;margin:0 auto;min-height:100vh;display:flex;flex-direction:column}
@media(min-width:900px){#app{flex-direction:row}}
main{flex:1;padding:16px 16px 96px;min-width:0}
@media(min-width:900px){main{padding:24px 28px 40px}}
h1{font-size:22px}h2{font-size:18px;margin:18px 0 10px}h3{font-size:16px}
.muted{color:var(--muted)}.small{font-size:13px}.tiny{font-size:12px}
.badge{display:inline-flex;align-items:center;font-size:11px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;padding:4px 10px;border-radius:999px;white-space:nowrap}
.badge.FREE{background:rgba(47,214,122,.16);color:var(--green);border:1px solid rgba(47,214,122,.4)}
.badge.LIMITED{background:rgba(255,178,36,.14);color:var(--amber);border:1px solid rgba(255,178,36,.4)}
.badge.OPEN{background:rgba(78,141,255,.15);color:var(--blue);border:1px solid rgba(78,141,255,.4)}
.badge.PAID{background:rgba(255,92,108,.14);color:var(--red);border:1px solid rgba(255,92,108,.4)}
.badge.UNKNOWN,.badge.UNAVAILABLE{background:rgba(138,144,166,.16);color:var(--grey);border:1px solid rgba(138,144,166,.4)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 20px;border-radius:13px;font-weight:700;font-size:15px;min-height:48px}
.btn:active{transform:scale(.98)}
.btn-primary{background:linear-gradient(135deg,var(--purple),#5A3DFF 55%,var(--cyan));color:#fff}
.btn-ghost{border:1px solid var(--border);background:var(--card);color:var(--text)}
.btn-danger{border:1px solid rgba(255,92,108,.5);color:var(--red);background:rgba(255,92,108,.08)}
.btn-sm{padding:8px 14px;min-height:40px;font-size:14px;border-radius:11px}
.btn-block{width:100%}
.btn[disabled]{opacity:.45;cursor:not-allowed}
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:16px}
.topbar{display:flex;align-items:center;gap:12px;padding:14px 16px 4px}
.logo{font-weight:800;font-size:19px;display:flex;gap:9px;align-items:center}
.logo-mark{width:32px;height:32px;border-radius:10px;background:conic-gradient(from 210deg,var(--purple),var(--cyan),var(--purple));display:flex;align-items:center;justify-content:center;font-size:16px}
.topbar .spacer{flex:1}
.icon-btn{width:42px;height:42px;border-radius:12px;border:1px solid var(--border);background:var(--card);display:inline-flex;align-items:center;justify-content:center;font-size:18px}
/* bottom nav / sidebar */
.bottomnav{position:fixed;left:0;right:0;bottom:0;z-index:40;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(14px);border-top:1px solid var(--border);display:flex;justify-content:space-around;padding:8px 4px calc(8px + env(safe-area-inset-bottom))}
.bottomnav button{display:flex;flex-direction:column;align-items:center;gap:2px;font-size:11px;color:var(--muted);padding:6px 10px;min-width:56px;border-radius:10px}
.bottomnav button .ic{font-size:20px}
.bottomnav button.on{color:var(--purple2);font-weight:700}
@media(min-width:900px){
  .bottomnav{position:sticky;top:0;left:0;right:auto;bottom:auto;flex-direction:column;justify-content:flex-start;gap:6px;width:200px;min-height:100vh;border-top:none;border-right:1px solid var(--border);padding:20px 12px}
  .bottomnav button{flex-direction:row;gap:10px;font-size:14px;padding:11px 14px;justify-content:flex-start;width:100%}
  .bottomnav button .ic{font-size:18px}
}
.screen{display:none;animation:fade .2s ease}
.screen.on{display:block}
@keyframes fade{from{opacity:0;transform:translateY(4px)}to{opacity:1;transform:none}}
.chips{display:flex;gap:8px;flex-wrap:wrap;margin:12px 0}
.chip{padding:8px 14px;border-radius:999px;border:1px solid var(--border);background:var(--card);font-size:13px;font-weight:700;min-height:38px}
.chip.on{background:var(--purple);border-color:var(--purple);color:#fff}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:12px}
.mcard{padding:15px;cursor:pointer;transition:transform .15s,border-color .15s;text-align:left;width:100%;color:var(--text)}
.mcard:hover{transform:translateY(-2px);border-color:rgba(118,87,255,.55)}
.mcard h3{margin:8px 0 3px;font-size:16px}
.mcard .row{display:flex;justify-content:space-between;align-items:center;gap:8px}
.mcard .foot{margin-top:10px;display:flex;justify-content:space-between;align-items:center}
.heart{font-size:18px;padding:4px 8px;border-radius:9px}
.heart.fav{color:var(--red)}
.kv{display:grid;grid-template-columns:130px 1fr;gap:8px 12px;font-size:14px;margin:12px 0}
.kv dt{color:var(--muted)}.kv dd{word-break:break-word}
.notice{background:rgba(255,178,36,.08);border:1px solid rgba(255,178,36,.35);border-radius:13px;padding:13px 15px;font-size:14px;margin:12px 0}
.notice.info{background:rgba(78,141,255,.08);border-color:rgba(78,141,255,.35)}
.notice b{color:var(--amber)}.notice.info b{color:var(--blue)}
.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:10px;margin:12px 0}
.stat{padding:14px;text-align:center}
.stat b{font-size:22px;display:block}
.stat span{font-size:12px;color:var(--muted)}
/* chat */
#chatView{position:fixed;inset:0;z-index:60;background:var(--bg);display:none;flex-direction:column}
#chatView.open{display:flex}
.chat-head{display:flex;align-items:center;gap:10px;padding:12px 14px;border-bottom:1px solid var(--border)}
.chat-head .title{flex:1;min-width:0}
.chat-head .title b{display:block;font-size:15px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
#chatLog{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:12px;max-width:860px;width:100%;margin:0 auto}
.msg{max-width:85%;padding:11px 14px;border-radius:16px;font-size:15px;line-height:1.6;white-space:pre-wrap;word-break:break-word}
.msg.user{background:var(--purple);color:#fff;align-self:flex-end;border-bottom-right-radius:5px}
.msg.ai{background:var(--card2);border:1px solid var(--border);align-self:flex-start;border-bottom-left-radius:5px}
.msg.ai pre{background:var(--bg2);border:1px solid var(--border);border-radius:10px;padding:10px;overflow-x:auto;font-size:13px;margin:8px 0}
.msg.ai code{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:13px}
.msg .meta{display:flex;gap:10px;margin-top:8px;font-size:12px;color:var(--muted)}
.msg .meta button{color:var(--muted);font-size:12px;font-weight:700}
.msg .meta button:hover{color:var(--text)}
.composer{border-top:1px solid var(--border);padding:12px 14px calc(12px + env(safe-area-inset-bottom))}
.composer .inner{max-width:860px;margin:0 auto;display:flex;gap:10px}
.composer textarea{resize:none;min-height:48px;max-height:140px}
.send-btn{width:48px;height:48px;border-radius:13px;background:linear-gradient(135deg,var(--purple),var(--cyan));color:#fff;font-size:19px;flex:none}
.typing{color:var(--muted);font-size:13px}
/* sheet / modal */
.sheet{position:fixed;inset:0;z-index:70;display:none}
.sheet.open{display:block}
.sheet .scrim{position:absolute;inset:0;background:rgba(0,0,0,.6)}
.sheet .panel{position:absolute;left:0;right:0;bottom:0;max-height:78vh;overflow-y:auto;background:var(--bg2);border-top:1px solid var(--border);border-radius:22px 22px 0 0;padding:18px;animation:slideup .22s ease}
@media(min-width:700px){.sheet .panel{left:50%;right:auto;transform:translateX(-50%);width:560px;bottom:24px;border-radius:22px;border:1px solid var(--border)}}
@keyframes slideup{from{transform:translateY(30px);opacity:0}to{transform:none;opacity:1}}
.sheet h3{margin-bottom:12px}
.list-row{display:flex;align-items:center;gap:12px;padding:12px 4px;border-bottom:1px solid var(--border);width:100%;text-align:left;color:var(--text)}
.list-row:last-child{border-bottom:none}
.list-row .grow{flex:1;min-width:0}
.list-row b{display:block;font-size:15px}
.list-row span{font-size:13px;color:var(--muted)}
.toggle{width:46px;height:26px;border-radius:999px;background:var(--card2);border:1px solid var(--border);position:relative;flex:none}
.toggle::after{content:"";position:absolute;top:2px;left:2px;width:20px;height:20px;border-radius:50%;background:var(--muted);transition:all .18s}
.toggle.on{background:var(--purple)}
.toggle.on::after{left:22px;background:#fff}
.splash{position:fixed;inset:0;z-index:100;background:var(--bg);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:18px;text-align:center;padding:24px}
.splash .orb{width:110px;height:110px;border-radius:50%;background:radial-gradient(circle at 35% 30%,#B79CFF,var(--purple) 45%,#1B2A6B 75%);box-shadow:0 0 60px rgba(118,87,255,.6);animation:pulse 1.6s ease-in-out infinite;display:flex;align-items:center;justify-content:center;font-size:38px}
@keyframes pulse{0%,100%{transform:scale(1)}50%{transform:scale(1.07)}}
.hidden{display:none!important}
.seg{display:flex;gap:8px;margin:12px 0}
.seg button{flex:1;padding:10px;border-radius:11px;border:1px solid var(--border);background:var(--card);font-weight:700;font-size:14px}
.seg button.on{background:var(--purple);color:#fff;border-color:var(--purple)}