/* ═════════════════ Selena design system — app.css ═════════════════ */
:root{
  --bg:#241d16; --bg2:#1f1913; --card:#2e261e; --card2:#332a20;
  --text:#ede4d6; --muted:#a89880; --faint:#7a6c58;
  --accent:#d99a3a; --accent-h:#e7ae52; --on-accent:#241d16;
  --border:#3a2f24; --border-h:#4a3c2c;
  --err:#e5695e; --ok:#7fbf7f; --info:#8ab4d8;
  --user-bubble:#d99a3a; --ai-bubble:#2e261e;
  --shadow:0 24px 60px rgba(0,0,0,.45);
  --r:16px; --r-sm:10px;
  --font:'Geist',system-ui,-apple-system,sans-serif;
  --mono:'Geist Mono',ui-monospace,Menlo,monospace;
  --display:'Fraunces',Georgia,serif;
}
html:not(.dark){
  --bg:#f9f4ed; --bg2:#f2ebdf; --card:#fffaf2; --card2:#f5ede0;
  --text:#3d322a; --muted:#7d6f5c; --faint:#a29480;
  --accent:#c8821b; --accent-h:#a96d12; --on-accent:#fffaf2;
  --border:#ddd4c4; --border-h:#c8bca6;
  --err:#c0483d; --ok:#4a8a4a; --info:#3c6e9e;
  --user-bubble:#c8821b; --ai-bubble:#fffaf2;
  --shadow:0 20px 50px rgba(90,70,40,.18);
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{font-family:var(--font);background:var(--bg);color:var(--text);overflow:hidden;-webkit-font-smoothing:antialiased}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
svg{flex-shrink:0}

/* ══ layout ══ */
.app{display:flex;height:100dvh}
.sidebar{width:288px;flex-shrink:0;background:var(--bg2);border-right:1px solid var(--border);display:flex;flex-direction:column;transition:margin .22s ease}
.main{flex:1;display:flex;flex-direction:column;min-width:0;background:
  radial-gradient(1100px 700px at 15% -10%, color-mix(in srgb,var(--accent) 7%,transparent) 0%, transparent 55%), var(--bg)}

/* ══ sidebar ══ */
.sb-head{display:flex;align-items:center;justify-content:space-between;padding:16px 14px 8px}
.brand{display:flex;align-items:center;gap:10px}
.logo{width:32px;height:32px;border-radius:10px;background:linear-gradient(135deg,var(--accent),#b9762a);color:var(--on-accent);font-family:var(--display);font-weight:700;font-size:17px;display:flex;align-items:center;justify-content:center}
.brand-name{font-family:var(--display);font-size:19px;font-weight:600;letter-spacing:.3px}
.new-chat{margin:8px 14px 10px;display:flex;align-items:center;gap:9px;padding:10px 14px;border-radius:12px;background:var(--accent);color:var(--on-accent);font-weight:600;font-size:14px;transition:.15s}
.new-chat:hover{background:var(--accent-h);transform:translateY(-1px)}
.session-list{flex:1;overflow-y:auto;padding:4px 10px;display:flex;flex-direction:column;gap:2px}
.sess{display:flex;align-items:center;gap:8px;padding:9px 10px;border-radius:10px;font-size:13.5px;color:var(--muted);cursor:pointer;border:1px solid transparent;min-width:0}
.sess:hover{background:var(--card);color:var(--text)}
.sess.active{background:var(--card);color:var(--text);border-color:var(--border)}
.sess .s-title{flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sess .s-x{opacity:0;font-size:12px;color:var(--faint);padding:3px 5px;border-radius:6px}
.sess:hover .s-x,.sess.active .s-x{opacity:1}
.sess .s-x:hover{color:var(--err);background:color-mix(in srgb,var(--err) 12%,transparent)}
.sb-foot{border-top:1px solid var(--border);padding:10px}
.user-chip{display:flex;align-items:center;gap:10px;padding:8px;border-radius:12px;cursor:pointer}
.user-chip:hover{background:var(--card)}
.avatar{width:32px;height:32px;border-radius:50%;background:linear-gradient(135deg,var(--accent),#9a6420);color:var(--on-accent);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px;text-transform:uppercase}
.u-meta{flex:1;min-width:0}
.u-name{font-size:13.5px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.u-plan{font-size:11.5px;color:var(--muted)}
.menu{position:absolute;bottom:64px;left:12px;right:12px;background:var(--card);border:1px solid var(--border);border-radius:14px;box-shadow:var(--shadow);padding:6px;z-index:60}
.menu-item{display:block;width:100%;text-align:left;padding:10px 12px;border-radius:9px;font-size:13.5px;color:var(--text);text-decoration:none}
.menu-item:hover{background:var(--card2)}
.menu-item.danger{color:var(--err)}
.sb-foot{position:relative}

/* ══ topbar ══ */
.topbar{display:flex;align-items:center;gap:8px;padding:10px 14px;border-bottom:1px solid var(--border);min-height:56px}
.spacer{flex:1}
.icon-btn{width:34px;height:34px;border-radius:10px;display:flex;align-items:center;justify-content:center;color:var(--muted);font-size:15px;transition:.15s}
.icon-btn:hover{background:var(--card);color:var(--text)}
.pill{display:flex;align-items:center;gap:6px;padding:7px 12px;border-radius:999px;background:var(--card);border:1px solid var(--border);font-size:13.5px;font-weight:600;color:var(--text);transition:.15s;max-width:260px}
.pill:hover{border-color:var(--border-h);background:var(--card2)}
.pill.ghost{background:transparent;font-weight:500;color:var(--muted)}
.pill.ghost:hover{color:var(--text);background:var(--card)}
.pill-label{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.provider{font-size:12px;color:var(--faint);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:140px}
.conn{display:flex;align-items:center;gap:6px;font-size:11.5px;color:var(--faint)}
.conn .dot{width:7px;height:7px;border-radius:50%;background:var(--faint)}
.conn[data-state="ok"] .dot{background:var(--ok)}
.conn[data-state="ok"]{color:var(--muted)}
.conn[data-state="err"] .dot{background:var(--err)}
.conn[data-state="wait"] .dot{background:var(--accent)}
.live-chip{font-size:10.5px;font-weight:700;color:var(--accent);background:color-mix(in srgb,var(--accent) 14%,transparent);padding:2px 7px;border-radius:99px;animation:pulse 1.2s infinite}
@keyframes pulse{50%{opacity:.55}}

/* ══ chat ══ */
.chat-scroll{flex:1;overflow-y:auto;scroll-behavior:smooth}
.empty{max-width:640px;margin:9vh auto 0;text-align:center;padding:0 20px}
.empty-logo{width:56px;height:56px;border-radius:18px;background:linear-gradient(135deg,var(--accent),#b9762a);color:var(--on-accent);font-family:var(--display);font-size:28px;font-weight:700;display:flex;align-items:center;justify-content:center;margin:0 auto 18px;box-shadow:var(--shadow)}
.empty h1{font-family:var(--display);font-size:28px;font-weight:600;margin-bottom:8px}
.empty-sub{color:var(--muted);font-size:14.5px;margin-bottom:26px}
.chips{display:flex;flex-wrap:wrap;gap:8px;justify-content:center}
.chip{padding:9px 14px;border-radius:999px;background:var(--card);border:1px solid var(--border);font-size:13px;color:var(--muted);transition:.15s}
.chip:hover{color:var(--text);border-color:var(--accent);transform:translateY(-1px)}
.messages{max-width:820px;margin:0 auto;padding:18px 20px 28px;display:flex;flex-direction:column;gap:18px}

.msg{display:flex;gap:12px;align-items:flex-start}
.msg .m-av{width:30px;height:30px;border-radius:9px;flex-shrink:0;display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;margin-top:2px}
.msg.user .m-av{background:color-mix(in srgb,var(--user-bubble) 22%,transparent);color:var(--accent)}
.msg.assistant .m-av{background:linear-gradient(135deg,var(--accent),#b9762a);color:var(--on-accent);font-family:var(--display)}
.m-body{flex:1;min-width:0}
.m-bubble{padding:12px 16px;border-radius:var(--r);font-size:14.5px;line-height:1.65;white-space:pre-wrap;word-wrap:break-word;overflow-wrap:anywhere}
.msg.user .m-bubble{background:color-mix(in srgb,var(--user-bubble) 18%,transparent);border:1px solid color-mix(in srgb,var(--user-bubble) 30%,transparent);border-bottom-right-radius:6px}
.msg.assistant .m-bubble{background:var(--ai-bubble);border:1px solid var(--border);border-bottom-left-radius:6px}
.m-bubble code{font-family:var(--mono);font-size:.88em;background:color-mix(in srgb,var(--accent) 12%,transparent);padding:1px 5px;border-radius:5px}
.m-bubble pre{background:var(--bg2);border:1px solid var(--border);border-radius:12px;padding:13px 14px;overflow-x:auto;margin:10px 0;white-space:pre}
.m-bubble pre code{background:none;padding:0;font-size:12.8px;line-height:1.55}
.m-bubble h1,.m-bubble h2,.m-bubble h3{font-size:1.06em;font-weight:700;margin:12px 0 6px}
.m-bubble ul,.m-bubble ol{margin:8px 0 8px 20px}
.m-bubble li{margin:3px 0}
.m-bubble a{color:var(--accent)}
.m-bubble blockquote{border-left:3px solid var(--accent);padding-left:12px;color:var(--muted);margin:8px 0}
.m-bubble p{margin:0 0 8px}.m-bubble :last-child{margin-bottom:0}

.m-actions{display:flex;gap:4px;margin-top:6px;opacity:0;transition:.15s}
.msg:hover .m-actions,.msg:focus-within .m-actions{opacity:1}
.ma{display:flex;align-items:center;gap:5px;font-size:11.5px;color:var(--faint);padding:5px 8px;border-radius:8px}
.ma:hover{color:var(--text);background:var(--card)}
.think{margin:0 0 8px;font-size:12.5px;color:var(--faint);border-left:2px solid var(--border);padding:2px 0 2px 10px;max-height:120px;overflow-y:auto;white-space:pre-wrap}
.think summary{cursor:pointer;color:var(--muted);font-style:italic;user-select:none}
.tool-line{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--info);background:color-mix(in srgb,var(--info) 8%,transparent);border:1px solid color-mix(in srgb,var(--info) 20%,transparent);border-radius:10px;padding:7px 11px;margin:8px 0}
.tool-line .tl-spin{width:11px;height:11px;border:2px solid color-mix(in srgb,var(--info) 35%,transparent);border-top-color:var(--info);border-radius:50%;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.tool-line.done{color:var(--muted);border-color:var(--border);background:var(--card)}
.tool-line.done .tl-spin{display:none}

.err-bubble{background:color-mix(in srgb,var(--err) 10%,transparent);border:1px solid color-mix(in srgb,var(--err) 30%,transparent);color:var(--err);border-radius:var(--r);padding:12px 16px;font-size:13.5px;display:flex;align-items:center;gap:10px}
.typing{display:inline-flex;gap:4px;align-items:center;padding:4px 0}
.typing span{width:6px;height:6px;border-radius:50%;background:var(--accent);animation:blink 1.2s infinite}
.typing span:nth-child(2){animation-delay:.2s}.typing span:nth-child(3){animation-delay:.4s}
@keyframes blink{0%,80%,100%{opacity:.25}40%{opacity:1}}

/* ══ composer ══ */
.composer-wrap{padding:6px 20px calc(14px + env(safe-area-inset-bottom));background:linear-gradient(transparent,var(--bg) 30%)}
.attach-tray{max-width:820px;margin:0 auto 8px;display:flex;flex-wrap:wrap;gap:8px}
.att{display:flex;align-items:center;gap:8px;background:var(--card);border:1px solid var(--border);border-radius:10px;padding:7px 11px;font-size:12.5px;max-width:240px}
.att .a-name{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.att .a-x{color:var(--faint)}.att .a-x:hover{color:var(--err)}
.att .a-bar{height:3px;background:var(--bg2);border-radius:99px;overflow:hidden;flex:1}
.att .a-bar i{display:block;height:100%;background:var(--accent);width:0;transition:width .2s}
.composer{max-width:820px;margin:0 auto;display:flex;align-items:flex-end;gap:6px;background:var(--card);border:1px solid var(--border);border-radius:22px;padding:8px 10px;box-shadow:var(--shadow);transition:border .15s}
.composer:focus-within{border-color:var(--accent)}
#input{flex:1;background:none;border:none;outline:none;resize:none;color:var(--text);font-size:14.5px;font-family:var(--font);line-height:1.5;max-height:190px;padding:8px 4px}
#input::placeholder{color:var(--faint)}
.c-icon{width:36px;height:36px;border-radius:12px;display:flex;align-items:center;justify-content:center;color:var(--muted);transition:.15s;flex-shrink:0}
.c-icon:hover{background:var(--card2);color:var(--text)}
.c-icon.rec{color:var(--err);animation:pulse 1s infinite}
.send{width:36px;height:36px;border-radius:12px;background:var(--accent);color:var(--on-accent);display:flex;align-items:center;justify-content:center;transition:.15s;flex-shrink:0}
.send:hover:not(:disabled){background:var(--accent-h);transform:translateY(-1px)}
.send:disabled{opacity:.35;cursor:not-allowed}
.send.stop{background:var(--err);color:#fff}
.c-foot{max-width:820px;margin:8px auto 0;text-align:center;font-size:11px;color:var(--faint)}
.slash-hint b{color:var(--muted)}

/* ══ modals ══ */
.modal{position:fixed;inset:0;background:rgba(0,0,0,.55);display:flex;align-items:center;justify-content:center;z-index:100;padding:20px;backdrop-filter:blur(3px)}
.modal[hidden]{display:none}
.modal-card{width:100%;max-width:600px;max-height:78vh;background:var(--card);border:1px solid var(--border);border-radius:20px;box-shadow:var(--shadow);display:flex;flex-direction:column;overflow:hidden;animation:pop .18s ease}
.modal-card.small{max-width:420px;padding:22px}
@keyframes pop{from{transform:scale(.96);opacity:0}}
.m-head{display:flex;align-items:center;gap:12px;padding:16px 18px 12px;border-bottom:1px solid var(--border)}
.m-head h3{font-family:var(--display);font-size:17px;flex-shrink:0}
.m-search{flex:1;padding:9px 13px;border-radius:10px;border:1px solid var(--border);background:var(--bg2);color:var(--text);font-size:13.5px;outline:none;min-width:0}
.m-search:focus{border-color:var(--accent)}
.m-x{flex-shrink:0}
.m-sort{padding:9px 10px;border-radius:10px;border:1px solid var(--border);background:var(--bg2);color:var(--text);font-size:12.5px;outline:none;flex-shrink:0}
.all-chats{display:flex;align-items:center;justify-content:center;gap:7px;margin:0 14px 8px;padding:8px;border-radius:10px;font-size:12.5px;color:var(--muted);border:1px dashed var(--border);transition:.15s}
.all-chats:hover{color:var(--text);border-color:var(--accent)}
.sess-row{display:flex;align-items:center;gap:11px;padding:11px 12px;border-radius:12px;border:1px solid transparent;cursor:pointer}
.sess-row:hover{background:var(--card2);border-color:var(--border)}
.sess-row.cur{border-color:var(--accent)}
.sr-ico{width:34px;height:34px;border-radius:10px;background:var(--bg2);display:flex;align-items:center;justify-content:center;flex-shrink:0}
.sr-main{flex:1;min-width:0}
.sr-title{font-size:13.5px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sr-meta{font-size:11.5px;color:var(--faint);margin-top:2px}
.sr-act{display:flex;gap:4px;opacity:0;transition:.15s}
.sess-row:hover .sr-act,.sess-row:focus-within .sr-act{opacity:1}
.sr-btn{font-size:11.5px;color:var(--muted);padding:5px 8px;border-radius:8px}
.sr-btn:hover{background:var(--bg2);color:var(--text)}
.sr-btn.del:hover{color:var(--err)}
.sr-title-input{width:100%;padding:6px 9px;border-radius:8px;border:1px solid var(--accent);background:var(--bg2);color:var(--text);font-size:13px;outline:none}
.m-sort{padding:9px 10px;border-radius:10px;border:1px solid var(--border);background:var(--bg2);color:var(--text);font-size:12.5px;outline:none;flex-shrink:0}
.sess-row{display:flex;align-items:center;gap:11px;padding:11px 12px;border-radius:12px;border:1px solid transparent;cursor:pointer}
.sess-row:hover{background:var(--card2);border-color:var(--border)}
.sess-row.cur{border-color:var(--accent)}
.sr-ico{width:34px;height:34px;border-radius:10px;background:var(--bg2);display:flex;align-items:center;justify-content:center;flex-shrink:0}
.sr-main{flex:1;min-width:0}
.sr-title{font-size:13.5px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sr-meta{font-size:11.5px;color:var(--faint);margin-top:2px}
.sr-act{display:flex;gap:4px;opacity:0;transition:.15s}
.sess-row:hover .sr-act,.sess-row:focus-within .sr-act{opacity:1}
.sr-btn{font-size:11.5px;color:var(--muted);padding:5px 8px;border-radius:8px}
.sr-btn:hover{background:var(--bg2);color:var(--text)}
.sr-btn.del:hover{color:var(--err)}
.sr-title-input{width:100%;padding:6px 9px;border-radius:8px;border:1px solid var(--accent);background:var(--bg2);color:var(--text);font-size:13px;outline:none}
.m-list{flex:1;overflow-y:auto;padding:10px}
.m-empty{color:var(--faint);text-align:center;padding:36px 12px;font-size:13.5px}
.m-foot{padding:11px 18px;border-top:1px solid var(--border);font-size:11.5px;color:var(--faint)}
.prov-group{font-size:11px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--faint);margin:14px 8px 6px}
.model-item,.tool-item{display:flex;align-items:center;gap:11px;padding:11px 12px;border-radius:12px;cursor:pointer;border:1px solid transparent}
.model-item:hover,.tool-item:hover{background:var(--card2);border-color:var(--border)}
.model-item.sel{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 8%,transparent)}
.mi-main{flex:1;min-width:0}
.mi-name{font-size:13.5px;font-weight:600;display:flex;align-items:center;gap:7px;flex-wrap:wrap}
.mi-desc{font-size:12px;color:var(--muted);margin-top:2px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.badge{font-size:10px;font-weight:700;padding:2px 7px;border-radius:99px;letter-spacing:.02em}
.badge.tools{background:color-mix(in srgb,var(--ok) 15%,transparent);color:var(--ok)}
.badge.reason{background:color-mix(in srgb,var(--info) 15%,transparent);color:var(--info)}
.badge.vision{background:color-mix(in srgb,var(--accent) 16%,transparent);color:var(--accent)}
.badge.ctx{background:var(--bg2);color:var(--muted);font-family:var(--mono)}
.badge.on{background:color-mix(in srgb,var(--ok) 16%,transparent);color:var(--ok)}
.badge.off{background:var(--bg2);color:var(--faint)}
.mi-check{color:var(--accent);font-weight:800}
.mi-help{width:26px;height:26px;border-radius:8px;display:flex;align-items:center;justify-content:center;color:var(--faint);font-size:12px;flex-shrink:0}
.mi-help:hover{background:var(--bg2);color:var(--accent)}
.tool-item .t-ico{width:34px;height:34px;border-radius:10px;background:var(--bg2);display:flex;align-items:center;justify-content:center;font-size:15px;flex-shrink:0}
.browser-card{margin:10px 8px;padding:14px;border-radius:14px;border:1px solid var(--accent);background:color-mix(in srgb,var(--accent) 6%,transparent)}
.browser-card h4{font-size:14px;display:flex;align-items:center;gap:8px}
.browser-card p{font-size:12.5px;color:var(--muted);margin:6px 0 10px;line-height:1.5}
.btn{padding:9px 16px;border-radius:11px;background:var(--accent);color:var(--on-accent);font-weight:600;font-size:13.5px;transition:.15s}
.btn:hover{background:var(--accent-h)}
.btn.ghost{background:transparent;border:1px solid var(--border);color:var(--text)}
.btn.ghost:hover{border-color:var(--border-h)}
.btn.danger{background:var(--err);color:#fff}
.ap-text{font-size:13.5px;color:var(--muted);line-height:1.6;margin:12px 0 18px;white-space:pre-wrap}
.ap-actions{display:flex;gap:10px;justify-content:flex-end}

/* ══ toasts ══ */
.toasts{position:fixed;top:16px;right:16px;z-index:200;display:flex;flex-direction:column;gap:8px;max-width:340px}
.toast{background:var(--card);border:1px solid var(--border);border-left:3px solid var(--accent);border-radius:12px;padding:11px 14px;font-size:13px;box-shadow:var(--shadow);animation:slide .2s ease}
.toast.err{border-left-color:var(--err)}
.toast.ok{border-left-color:var(--ok)}
@keyframes slide{from{transform:translateX(20px);opacity:0}}

.scrrim{position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:39}

/* ══ sessions loading ══ */
.skel{height:36px;border-radius:10px;background:linear-gradient(90deg,var(--card) 25%,var(--card2) 50%,var(--card) 75%);background-size:200% 100%;animation:sk 1.2s infinite;margin:4px 0}
@keyframes sk{to{background-position:-200% 0}}

/* ══ scrollbar ══ */
::-webkit-scrollbar{width:9px;height:9px}
::-webkit-scrollbar-thumb{background:var(--border);border-radius:99px;border:2px solid transparent;background-clip:content-box}
::-webkit-scrollbar-thumb:hover{background:var(--border-h);border:2px solid transparent;background-clip:content-box}
::-webkit-scrollbar-track{background:transparent}

/* ══ mobile ══ */
@media (max-width:820px){
  .sidebar{position:fixed;inset:0 auto 0 0;z-index:40;margin-left:-288px;box-shadow:var(--shadow)}
  .sidebar.open{margin-left:0}
  .scrim:not([hidden]){display:block}
  .sb-close{display:flex}
  .messages{padding:14px 12px 20px}
  .composer-wrap{padding:4px 10px calc(10px + env(safe-area-inset-bottom))}
  .empty{margin-top:5vh}
  .empty h1{font-size:22px}
  .m-bubble{font-size:14px}
  .provider{display:none}
  .msg .m-av{display:none}
}
@media (min-width:821px){.sb-close{display:none}#sbOpen{display:none}}