@font-face{
  font-family:'Pretendard';
  font-weight:45 920;
  font-style:normal;
  font-display:swap;
  src:url('/static/fonts/PretendardVariable.woff2') format('woff2-variations');
}
:root{
  --bg:#ffffff; --panel:#f7f9fc; --panel2:#eef2f8; --border:#e3e9f2;
  --ink:#12213a; --ink2:#4a5b76; --muted:#8595ad;
  --brand1:#12b5a5; --brand2:#2b7fff; --brand3:#7b4dff;
  --grad:linear-gradient(120deg,#12b5a5 0%,#2b7fff 50%,#7b4dff 100%);
  --ok:#12a56b; --warn:#e5893a; --err:#e5484d;
  --radius:16px; --shadow:0 6px 24px rgba(30,50,90,.08);
  --shadow-lg:0 18px 60px rgba(30,50,90,.16);
  --font:'Pretendard','Pretendard Variable',-apple-system,BlinkMacSystemFont,'Malgun Gothic','Apple SD Gothic Neo',system-ui,sans-serif;
  --mono:'SFMono-Regular',ui-monospace,'Cascadia Code',Consolas,monospace;
}
*{box-sizing:border-box}
html,body{margin:0;height:100%}
body{font-family:var(--font);color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased}
button{font-family:inherit;cursor:pointer}
.hidden{display:none !important}

/* ---------------- Login ---------------- */
.login-body{display:flex;align-items:center;justify-content:center;min-height:100vh;overflow:hidden;position:relative;background:#fff}
.login-aurora{position:absolute;inset:-30%;background:
  radial-gradient(40% 40% at 20% 30%,rgba(18,181,165,.28),transparent 60%),
  radial-gradient(40% 40% at 80% 25%,rgba(43,127,255,.26),transparent 60%),
  radial-gradient(45% 45% at 55% 85%,rgba(123,77,255,.24),transparent 60%);
  filter:blur(20px);animation:drift 16s ease-in-out infinite alternate;z-index:0}
@keyframes drift{0%{transform:translate(0,0) scale(1)}100%{transform:translate(-4%,3%) scale(1.08)}}
.login-card{position:relative;z-index:1;width:380px;max-width:92vw;background:#fff;border:1px solid var(--border);
  border-radius:22px;box-shadow:var(--shadow-lg);padding:38px 34px;text-align:center}
.login-logo{height:46px;margin-bottom:6px}
.login-tag{color:var(--ink2);font-size:12.5px;margin:2px 0 22px;line-height:1.5}
.login-form{display:flex;flex-direction:column;text-align:left;gap:5px}
.login-form label{font-size:12px;color:var(--muted);font-weight:600;margin-top:8px}
.login-form input{padding:12px 14px;border:1px solid var(--border);border-radius:11px;font-size:14px;background:var(--panel);transition:.15s}
.login-form input:focus{outline:none;border-color:var(--brand2);background:#fff;box-shadow:0 0 0 3px rgba(43,127,255,.14)}
.btn-login{margin-top:18px}
.login-error{background:#fdecec;color:var(--err);border:1px solid #f6cccd;padding:10px;border-radius:10px;font-size:12.5px;margin-bottom:14px}
.login-foot{margin-top:20px;color:var(--muted);font-size:11px;letter-spacing:.5px}
.btn-primary{background:var(--grad);color:#fff;border:none;padding:12px 18px;border-radius:11px;font-weight:700;font-size:14px;
  box-shadow:0 6px 18px rgba(43,127,255,.28);transition:.15s;background-size:160% 160%}
.btn-primary:hover{filter:brightness(1.05);transform:translateY(-1px)}

/* ---------------- Layout ---------------- */
#app{display:flex;height:100vh;height:100dvh;overflow:hidden}
.sidebar{width:288px;flex-shrink:0;background:var(--panel);border-right:1px solid var(--border);
  display:flex;flex-direction:column;padding:16px 14px;overflow:hidden}
.sb-top{padding:4px 4px 12px}
.logo-btn{background:none;border:none;padding:4px;width:100%;display:flex;align-items:center;justify-content:flex-start;border-radius:12px;transition:.15s}
.logo-btn:hover{background:var(--panel2)}
.sb-logo{height:46px}
.sb-logo-mark{height:34px;display:none}
.sb-btn{display:flex;align-items:center;gap:10px;width:100%;border:1px solid var(--border);background:#fff;color:var(--ink);
  padding:11px 13px;border-radius:12px;font-weight:600;font-size:13.5px;margin-bottom:9px;transition:.14s}
.sb-btn .ic{font-size:16px;line-height:1;width:20px;text-align:center;flex-shrink:0}
.sb-btn:hover{border-color:var(--brand2);box-shadow:0 4px 12px rgba(43,127,255,.12)}
.btn-new{background:var(--grad);color:#fff;border:none;font-weight:700;box-shadow:0 6px 16px rgba(43,127,255,.24)}
.btn-new:hover{filter:brightness(1.05);box-shadow:0 8px 20px rgba(43,127,255,.3)}
.btn-new .ic{font-size:18px}
.sb-section{margin-bottom:12px;overflow:hidden;display:flex;flex-direction:column;min-height:0}
.sb-label{font-size:10.5px;font-weight:800;letter-spacing:1px;color:var(--muted);text-transform:uppercase;padding:4px 6px 8px}
.example-list{overflow-y:auto;display:flex;flex-direction:column;gap:6px;padding-right:2px}
.example-item{text-align:left;background:#fff;border:1px solid var(--border);border-radius:11px;padding:9px 11px;font-size:12.5px;color:var(--ink2);
  transition:.14s;display:flex;gap:8px;align-items:flex-start;line-height:1.35}
.example-item:hover{border-color:var(--brand2);box-shadow:0 4px 12px rgba(43,127,255,.12);transform:translateY(-1px);color:var(--ink)}
.example-item .ico{font-size:15px;flex-shrink:0}
.example-item .ex-cat{font-weight:700;color:var(--ink);font-size:11px;display:block;margin-bottom:1px}
.sb-examples{flex:1;min-height:80px}
.cap-list{display:flex;flex-wrap:wrap;gap:5px;overflow-y:auto;padding:2px 4px}
.cap-chip{background:#fff;border:1px solid var(--border);border-radius:20px;padding:4px 10px;font-size:11px;color:var(--ink2)}
.sb-foot{border-top:1px solid var(--border);padding-top:12px;display:flex;flex-direction:column;gap:10px}
.sb-foot-btn{background:#fff;border:1px solid var(--border);border-radius:10px;padding:9px;font-size:13px;color:var(--ink);font-weight:600;text-align:left}
.sb-foot-btn:hover{border-color:var(--brand2)}
.lang-toggle{display:flex;background:#fff;border:1px solid var(--border);border-radius:10px;overflow:hidden}
.lang-toggle button{flex:1;border:none;background:transparent;padding:8px;font-size:12.5px;font-weight:600;color:var(--muted)}
.lang-toggle button.active{background:var(--grad);color:#fff}
.sb-logout{text-align:center;color:var(--muted);font-size:12px;text-decoration:none;padding:4px}
.sb-logout:hover{color:var(--err)}

/* ---------------- Main ---------------- */
.main{flex:1;display:flex;flex-direction:column;min-width:0;position:relative}
.topbar{height:56px;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:12px;padding:0 20px;background:#fff}
.hamburger{display:none;background:none;border:none;font-size:20px;color:var(--ink2)}
.provider-pill{display:flex;align-items:center;gap:7px;background:var(--panel);border:1px solid var(--border);border-radius:20px;padding:6px 13px;font-size:12.5px;font-weight:600;color:var(--ink2)}
.provider-pill .dot{width:8px;height:8px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 3px rgba(18,165,107,.16)}
.provider-pill .dot.claude{background:var(--brand3);box-shadow:0 0 0 3px rgba(123,77,255,.16)}
.topbar-spacer{flex:1}
.model-name{position:relative;font-size:12.5px;font-weight:800;font-family:var(--mono);letter-spacing:.02em;
  max-width:300px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
  padding:7px 15px 7px 30px;border-radius:20px;color:#0e2a52;
  background:linear-gradient(120deg,rgba(18,181,165,.14),rgba(43,127,255,.14),rgba(123,77,255,.14));
  background-size:200% 100%;border:1px solid transparent;
  background-clip:padding-box;animation:modelShimmer 4s linear infinite}
.model-name::before{content:"";position:absolute;left:12px;top:50%;transform:translateY(-50%);width:9px;height:9px;border-radius:50%;
  background:var(--grad);box-shadow:0 0 0 0 rgba(43,127,255,.5);animation:modelPulse 1.8s ease-out infinite}
@keyframes modelShimmer{to{background-position:200% 0}}
@keyframes modelPulse{0%{box-shadow:0 0 0 0 rgba(43,127,255,.5)}70%{box-shadow:0 0 0 7px rgba(43,127,255,0)}100%{box-shadow:0 0 0 0 rgba(43,127,255,0)}}

.chat{flex:1;overflow-y:auto;padding:26px 20px 30px;scroll-behavior:smooth}
.chat-inner,.msg-wrap{max-width:820px;margin:0 auto}

/* Welcome — vertically centered & enlarged on desktop */
.chat:has(.welcome){display:flex;align-items:center;justify-content:center}
.welcome{max-width:880px;width:100%;margin:0 auto;text-align:center;animation:fadeUp .5s ease;padding:20px 0}
.welcome-logo{height:64px;margin-bottom:18px}
.welcome h1{font-size:40px;margin:8px 0;color:var(--ink);font-weight:800;letter-spacing:-.02em}
.welcome p{color:var(--ink2);font-size:17px;margin:0 auto 34px;max-width:600px;line-height:1.6}
.welcome-chips{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}
.wchip{background:#fff;border:1px solid var(--border);border-radius:14px;padding:12px 15px;font-size:13px;color:var(--ink2);text-align:left;
  max-width:340px;transition:.15s;box-shadow:var(--shadow)}
.wchip:hover{border-color:var(--brand2);transform:translateY(-2px);color:var(--ink);box-shadow:0 10px 26px rgba(43,127,255,.14)}
.wchip b{display:block;color:var(--ink);font-size:12px;margin-bottom:3px}
@keyframes fadeUp{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}

/* Messages */
.msg{margin:0 auto 22px;max-width:820px;animation:fadeUp .35s ease}
.msg.user .bubble{background:var(--grad);color:#fff;padding:13px 17px;border-radius:16px 16px 4px 16px;display:inline-block;
  max-width:78%;font-size:14.5px;line-height:1.55;box-shadow:0 6px 18px rgba(43,127,255,.22);white-space:pre-wrap}
.msg.user{text-align:right}
.msg.agent{display:flex;gap:12px}
.agent-avatar{width:32px;height:32px;border-radius:9px;background:var(--grad);flex-shrink:0;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:800;font-size:13px;margin-top:2px}
.agent-body{flex:1;min-width:0}

/* Step blocks */
.block{background:#fff;border:1px solid var(--border);border-radius:14px;margin-bottom:12px;overflow:hidden;box-shadow:var(--shadow);animation:fadeUp .3s ease}
.block-head{display:flex;align-items:center;gap:9px;padding:11px 15px;font-size:12.5px;font-weight:700;cursor:pointer;user-select:none;border-bottom:1px solid transparent}
.block-head .bh-ico{width:22px;height:22px;border-radius:7px;display:flex;align-items:center;justify-content:center;font-size:12px;flex-shrink:0}
.block-head .bh-title{flex:1;color:var(--ink)}
.block-head .bh-badge{font-size:10.5px;font-weight:700;padding:2px 8px;border-radius:20px;background:var(--panel2);color:var(--ink2)}
.block-head .chev{color:var(--muted);transition:.2s;font-size:11px}
.block.collapsed .block-body{display:none}
.block.collapsed .chev{transform:rotate(-90deg)}
.block-body{padding:14px 16px;font-size:14px;line-height:1.62;color:var(--ink);border-top:1px solid var(--border)}

.block.reasoning .bh-ico{background:linear-gradient(135deg,#2b7fff,#7b4dff);color:#fff}
.block.code .bh-ico{background:#12213a;color:#7fd8ff}
.block.obs .bh-ico{background:#eaf6ef;color:var(--ok)}
.block.obs.err .bh-ico{background:#fdecec;color:var(--err)}
.block.final{border:1px solid rgba(43,127,255,.35);box-shadow:0 10px 30px rgba(43,127,255,.14)}
.block.final .bh-ico{background:var(--grad);color:#fff}
.block.final .block-head{background:linear-gradient(120deg,rgba(18,181,165,.08),rgba(123,77,255,.08))}

/* Code / output */
pre.code{background:#0f1b2d;color:#e6edf6;border-radius:10px;padding:13px 14px;overflow-x:auto;font-family:var(--mono);font-size:12.5px;line-height:1.55;margin:0}
pre.code .kw{color:#7b9dff}pre.code .st{color:#7fe0b0}pre.code .cm{color:#6b7d97;font-style:italic}pre.code .nm{color:#ffd479}pre.code .bi{color:#ff9ecb}
pre.output{background:var(--panel);border:1px solid var(--border);border-radius:10px;padding:12px 14px;overflow-x:auto;font-family:var(--mono);font-size:12.5px;line-height:1.5;margin:0;color:var(--ink);white-space:pre-wrap;word-break:break-word;max-height:420px;overflow-y:auto}
pre.output.err{background:#fdf3f3;border-color:#f4d0d1;color:#a3282c}
.obs-img{max-width:100%;border-radius:10px;border:1px solid var(--border);margin-top:10px;display:block}

/* Markdown */
.md p{margin:0 0 10px}.md h1,.md h2,.md h3{margin:14px 0 8px;line-height:1.3}
.md h1{font-size:19px}.md h2{font-size:17px}.md h3{font-size:15px}
.md ul,.md ol{margin:0 0 10px;padding-left:22px}.md li{margin:3px 0}
.md code{background:var(--panel2);padding:1.5px 6px;border-radius:6px;font-family:var(--mono);font-size:12.5px;color:#b3327a}
.md pre{margin:0 0 10px}
.md a{color:var(--brand2);text-decoration:none}.md a:hover{text-decoration:underline}
.md table{border-collapse:collapse;width:100%;margin:0 0 12px;font-size:13px;display:block;overflow-x:auto}
.md th,.md td{border:1px solid var(--border);padding:7px 10px;text-align:left}
.md th{background:var(--panel);font-weight:700}
.md blockquote{border-left:3px solid var(--brand2);margin:0 0 10px;padding:2px 14px;color:var(--ink2);background:var(--panel)}
.cursor{display:inline-block;width:7px;height:15px;background:var(--brand2);margin-left:1px;border-radius:2px;animation:blink 1s steps(2) infinite;vertical-align:text-bottom}
@keyframes blink{50%{opacity:0}}

/* Progress bar */
.progress-wrap{max-width:820px;margin:0 auto 18px;display:flex;flex-direction:column;gap:7px}
.progress-line{display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--ink2);font-weight:600}
.progress-line .spinner{width:15px;height:15px;border:2.5px solid var(--panel2);border-top-color:var(--brand2);border-radius:50%;animation:spin .7s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.progress-bar{height:7px;background:var(--panel2);border-radius:20px;overflow:hidden;position:relative}
.progress-bar .fill{position:absolute;inset:0;width:38%;border-radius:20px;background:var(--grad);background-size:200% 100%;
  animation:slide 1.5s ease-in-out infinite,shimmer 2s linear infinite}
@keyframes slide{0%{left:-40%}100%{left:100%}}
@keyframes shimmer{to{background-position:200% 0}}
.progress-steps{font-size:11px;color:var(--muted)}

/* Composer */
.composer{border-top:1px solid var(--border);padding:14px 20px 16px;background:#fff}
.composer-inner{max-width:820px;margin:0 auto;position:relative;display:flex;align-items:flex-end;gap:8px;
  background:var(--panel);border:1.5px solid var(--border);border-radius:16px;padding:8px 8px 8px 16px;transition:.15s}
.composer-inner:focus-within{border-color:var(--brand2);box-shadow:0 0 0 4px rgba(43,127,255,.1);background:#fff}
#input{flex:1;border:none;background:transparent;resize:none;font-family:inherit;font-size:14.5px;line-height:1.5;color:var(--ink);max-height:200px;padding:6px 0}
#input:focus{outline:none}
.send-btn,.stop-btn{width:40px;height:40px;border-radius:11px;border:none;flex-shrink:0;display:flex;align-items:center;justify-content:center;color:#fff}
.send-btn{background:var(--grad);box-shadow:0 4px 12px rgba(43,127,255,.28)}
.send-btn:hover{filter:brightness(1.06)}
.send-btn:disabled{opacity:.4;cursor:not-allowed}
.stop-btn{background:var(--err);font-size:13px}
.composer-hint{max-width:820px;margin:8px auto 0;text-align:center;font-size:11px;color:var(--muted)}

/* ---------------- Modal ---------------- */
.modal-overlay{position:fixed;inset:0;background:rgba(20,32,58,.42);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;z-index:50;animation:fadeIn .2s}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
.modal{background:#fff;border-radius:20px;width:560px;max-width:94vw;max-height:88vh;display:flex;flex-direction:column;box-shadow:var(--shadow-lg);animation:fadeUp .25s ease}
.modal-head{display:flex;align-items:center;justify-content:space-between;padding:20px 24px 14px;border-bottom:1px solid var(--border)}
.modal-head h2{margin:0;font-size:18px}
.modal-close{background:var(--panel);border:none;width:32px;height:32px;border-radius:9px;font-size:14px;color:var(--ink2)}
.modal-close:hover{background:var(--panel2)}
.modal-body{padding:18px 24px;overflow-y:auto}
.tabs{display:flex;gap:6px;background:var(--panel);padding:5px;border-radius:12px;margin-bottom:18px}
.tab{flex:1;border:none;background:transparent;padding:9px;border-radius:9px;font-size:13px;font-weight:600;color:var(--ink2)}
.tab.active{background:#fff;color:var(--ink);box-shadow:var(--shadow)}
.tab-pane{display:none}.tab-pane.active{display:block;animation:fadeIn .2s}
.field{margin-bottom:16px}
.field>label{display:block;font-size:12.5px;font-weight:700;color:var(--ink2);margin-bottom:7px}
.field input[type=text],.field input:not([type]),.field input[type=password],.field select{width:100%;padding:10px 13px;border:1px solid var(--border);border-radius:10px;font-size:13.5px;background:var(--panel);font-family:inherit}
.field input:focus,.field select:focus{outline:none;border-color:var(--brand2);background:#fff;box-shadow:0 0 0 3px rgba(43,127,255,.12)}
.field input[type=range]{width:100%;accent-color:var(--brand2)}
.seg{display:flex;background:var(--panel);border:1px solid var(--border);border-radius:11px;overflow:hidden}
.seg button{flex:1;border:none;background:transparent;padding:10px;font-size:13px;font-weight:600;color:var(--muted)}
.seg button.active{background:var(--grad);color:#fff}
.model-row{display:flex;gap:8px}
.model-row select{flex:1}
.btn-load{background:var(--ink);color:#fff;border:none;padding:0 16px;border-radius:10px;font-size:13px;font-weight:600;white-space:nowrap}
.btn-load:hover{background:#20344f}
.btn-load.loading{opacity:.6;pointer-events:none}
.load-status{font-size:11.5px;margin-top:6px;min-height:14px}
.load-status.ok{color:var(--ok)}.load-status.err{color:var(--err)}
.toggle-field{display:flex;align-items:center;justify-content:space-between}
.toggle-field>label{margin-bottom:0}
.switch{position:relative;display:inline-block;width:44px;height:24px;flex-shrink:0}
.switch input{opacity:0;width:0;height:0}
.slider{position:absolute;inset:0;background:var(--panel2);border-radius:24px;transition:.2s}
.slider:before{content:"";position:absolute;height:18px;width:18px;left:3px;bottom:3px;background:#fff;border-radius:50%;transition:.2s;box-shadow:0 1px 3px rgba(0,0,0,.2)}
.switch input:checked+.slider{background:var(--grad)}
.switch input:checked+.slider:before{transform:translateX(20px)}
.agent-note{font-size:11.5px;color:var(--muted);background:var(--panel);border-radius:10px;padding:10px 12px;line-height:1.5}
.modal-foot{display:flex;align-items:center;justify-content:flex-end;gap:14px;padding:14px 24px;border-top:1px solid var(--border)}
.save-status{flex:1;font-size:12px;color:var(--ok);font-weight:600}

/* Nav toggle (collapse sidebar) */
.nav-toggle{background:var(--panel);border:1px solid var(--border);width:34px;height:34px;border-radius:9px;color:var(--ink2);font-size:16px;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.nav-toggle:hover{border-color:var(--brand2);color:var(--brand2)}
.sidebar{transition:width .22s ease,padding .22s ease}
/* Rail mode: collapsed sidebar shows icons only */
#app.nav-collapsed .sidebar{width:72px;padding:16px 10px}
#app.nav-collapsed .sb-logo{display:none}
#app.nav-collapsed .sb-logo-mark{display:block;margin:0 auto}
#app.nav-collapsed .logo-btn{justify-content:center}
#app.nav-collapsed .lbl,
#app.nav-collapsed .sb-label,
#app.nav-collapsed .sb-examples,
#app.nav-collapsed .lang-toggle,
#app.nav-collapsed .sb-logout{display:none}
#app.nav-collapsed .sb-btn{justify-content:center;padding:12px 0;gap:0}
#app.nav-collapsed .sb-btn .ic{width:auto}
#app.nav-collapsed .sb-foot{border-top:none}

/* Capabilities dropdown in header */
.cap-dropdown{position:relative}
.cap-btn{display:flex;align-items:center;gap:6px;background:var(--panel);border:1px solid var(--border);border-radius:20px;padding:6px 13px;font-size:12.5px;font-weight:600;color:var(--ink2)}
.cap-btn:hover{border-color:var(--brand2);color:var(--ink)}
.cap-btn .caret{font-size:10px;transition:.2s}
.cap-dropdown.open .cap-btn .caret{transform:rotate(180deg)}
.cap-dropdown.open .cap-btn{border-color:var(--brand2);color:var(--ink)}
.cap-menu{position:absolute;top:calc(100% + 8px);left:0;z-index:30;background:#fff;border:1px solid var(--border);border-radius:14px;box-shadow:var(--shadow-lg);
  padding:10px;width:300px;display:none;grid-template-columns:1fr 1fr;gap:6px;animation:fadeUp .18s ease}
.cap-dropdown.open .cap-menu{display:grid}
.cap-menu .cap-chip{background:var(--panel);border:1px solid var(--border);border-radius:9px;padding:8px 10px;font-size:12px;color:var(--ink2);font-weight:600;text-align:center;transition:.13s}
.cap-menu .cap-chip:hover{border-color:var(--brand2);color:var(--ink);background:#fff}

/* Plan / to-do checklist card */
.plan-card{background:#fff;border:1px solid var(--border);border-radius:14px;box-shadow:var(--shadow);margin-bottom:14px;overflow:hidden;animation:fadeUp .3s ease}
.plan-head{display:flex;align-items:center;gap:9px;padding:12px 16px;font-weight:800;font-size:13px;color:var(--ink);background:linear-gradient(120deg,rgba(18,181,165,.08),rgba(123,77,255,.08));border-bottom:1px solid var(--border)}
.plan-head .pico{width:22px;height:22px;border-radius:7px;background:var(--grad);color:#fff;display:flex;align-items:center;justify-content:center;font-size:12px}
.plan-head .pcount{margin-left:auto;font-size:11px;font-weight:700;color:var(--ink2);background:var(--panel);padding:3px 9px;border-radius:20px}
.plan-list{list-style:none;margin:0;padding:8px 10px}
.plan-item{display:flex;align-items:flex-start;gap:10px;padding:8px 8px;border-radius:9px;font-size:13.5px;color:var(--ink2);line-height:1.45;transition:.15s}
.plan-item .pbox{width:19px;height:19px;border-radius:6px;border:2px solid #cdd7e6;flex-shrink:0;margin-top:1px;display:flex;align-items:center;justify-content:center;font-size:12px;color:#fff;transition:.2s;background:#fff}
.plan-item.done .pbox{background:var(--grad);border-color:transparent}
.plan-item.done .pbox::after{content:"✓"}
.plan-item.done{color:var(--muted)}
.plan-item.done .ptxt{text-decoration:line-through;text-decoration-color:#c3ccdb}
.plan-item.active{background:var(--panel)}
.plan-item.active .pbox{border-color:var(--brand2);box-shadow:0 0 0 3px rgba(43,127,255,.14)}
.plan-item.active .pbox::after{content:"";width:8px;height:8px;border-radius:50%;background:var(--brand2)}
.plan-num{font-weight:800;color:var(--muted);font-size:12px;min-width:15px}
.plan-done-banner{display:none;align-items:center;gap:8px;margin:0 10px 10px;padding:10px 12px;border-radius:10px;background:linear-gradient(120deg,rgba(18,165,107,.12),rgba(43,127,255,.1));color:var(--ok);font-weight:700;font-size:12.5px}
.plan-card.complete .plan-done-banner{display:flex}

/* Step group */
.step-group{border:1px solid var(--border);border-radius:14px;margin-bottom:14px;overflow:hidden;box-shadow:var(--shadow);background:var(--panel);animation:fadeUp .3s ease}
.step-group-head{display:flex;align-items:center;gap:10px;padding:11px 15px;font-size:13px;font-weight:800;color:var(--ink);background:#fff;border-bottom:1px solid var(--border)}
.step-group-head .sg-badge{width:24px;height:24px;border-radius:8px;background:var(--grad);color:#fff;display:flex;align-items:center;justify-content:center;font-size:12px;flex-shrink:0}
.step-group-head .sg-title{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.step-group-head .sg-status{width:16px;height:16px;flex-shrink:0}
.step-group-head .sg-status.spin{border:2.5px solid var(--panel2);border-top-color:var(--brand2);border-radius:50%;animation:spin .7s linear infinite}
.step-group-head .sg-status.ok{color:var(--ok);font-size:15px;display:flex;align-items:center;justify-content:center;font-weight:800}
.step-group-body{padding:12px 13px}
.step-group-body .block{box-shadow:none;margin-bottom:10px}
.step-group-body .block:last-child{margin-bottom:0}

/* ---------------- Welcome mystical animation ---------------- */
.welcome{position:relative;overflow:visible}
.welcome-inner{position:relative;z-index:2}
.welcome-fx{position:absolute;inset:-60px 0 auto;height:420px;left:50%;transform:translateX(-50%);width:min(760px,92vw);z-index:1;pointer-events:none}
.welcome-fx .orb{position:absolute;border-radius:50%;filter:blur(34px);opacity:.55;mix-blend-mode:multiply;animation:orbFloat 9s ease-in-out infinite}
.orb1{width:220px;height:220px;background:radial-gradient(circle,#12b5a5,transparent 70%);left:8%;top:20px}
.orb2{width:260px;height:260px;background:radial-gradient(circle,#2b7fff,transparent 70%);right:6%;top:0;animation-delay:-3s}
.orb3{width:200px;height:200px;background:radial-gradient(circle,#7b4dff,transparent 70%);left:42%;top:120px;animation-delay:-6s}
@keyframes orbFloat{0%,100%{transform:translate(0,0) scale(1)}33%{transform:translate(24px,-18px) scale(1.08)}66%{transform:translate(-18px,20px) scale(.95)}}
.welcome-fx .ring{position:absolute;left:50%;top:60px;width:300px;height:300px;margin-left:-150px;border-radius:50%;
  border:1.5px dashed rgba(43,127,255,.28);animation:spin 26s linear infinite}
.welcome-fx .ring2{width:420px;height:420px;margin-left:-210px;top:0;border-color:rgba(123,77,255,.18);animation:spin 40s linear infinite reverse}
.welcome-fx .particle{position:absolute;width:8px;height:8px;border-radius:50%;background:var(--grad);box-shadow:0 0 12px rgba(43,127,255,.6);opacity:.75;animation:particleFloat 7s ease-in-out infinite}
.p1{left:20%;top:40px;animation-delay:0s}.p2{left:78%;top:80px;animation-delay:-1s;width:6px;height:6px}
.p3{left:35%;top:150px;animation-delay:-2s}.p4{left:64%;top:180px;animation-delay:-3s;width:5px;height:5px}
.p5{left:12%;top:150px;animation-delay:-4s;width:6px;height:6px}.p6{left:88%;top:170px;animation-delay:-2.5s}
.p7{left:50%;top:30px;animation-delay:-5s;width:5px;height:5px}.p8{left:72%;top:30px;animation-delay:-1.5s}
@keyframes particleFloat{0%,100%{transform:translateY(0);opacity:.35}50%{transform:translateY(-26px);opacity:.9}}
.welcome-logo{animation:logoGlow 4s ease-in-out infinite}
@keyframes logoGlow{0%,100%{filter:drop-shadow(0 4px 14px rgba(43,127,255,.18))}50%{filter:drop-shadow(0 6px 22px rgba(123,77,255,.32))}}
@media(prefers-reduced-motion:reduce){.welcome-fx *{animation:none!important}.welcome-logo{animation:none}}

/* ---------------- Attach / upload ---------------- */
.composer{position:relative}
.attach-area{max-width:820px;margin:0 auto}
.attach-hint{font-size:12px;color:var(--brand2);background:rgba(43,127,255,.07);border:1px solid rgba(43,127,255,.2);border-radius:10px;
  padding:8px 12px;margin-bottom:8px;display:none;line-height:1.45}
.attach-hint.show{display:block;animation:fadeUp .2s ease}
.attach-hint.warn{color:var(--warn);background:rgba(229,137,58,.08);border-color:rgba(229,137,58,.3)}
.attach-list{display:flex;flex-wrap:wrap;gap:7px;margin-bottom:8px}
.attach-chip{display:flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--border);border-radius:10px;padding:7px 10px;font-size:12px;max-width:280px;box-shadow:var(--shadow)}
.attach-chip .ac-ico{font-size:14px}
.attach-chip .ac-name{font-weight:700;color:var(--ink);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.attach-chip .ac-info{color:var(--muted);font-size:11px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:140px}
.attach-chip .ac-dl,.attach-chip .ac-x{background:var(--panel2);border:none;width:18px;height:18px;border-radius:5px;color:var(--ink2);font-size:11px;flex-shrink:0;display:flex;align-items:center;justify-content:center}
.attach-chip .ac-dl:hover{background:var(--accent-bg,#eef4ff);color:var(--brand2)}
.attach-chip .ac-x:hover{background:#f6cccd;color:var(--err)}
.attach-chip.uploading{opacity:.6}
.attach-btn{width:36px;height:40px;border:none;background:transparent;color:var(--muted);flex-shrink:0;display:flex;align-items:center;justify-content:center;border-radius:9px}
.attach-btn:hover{color:var(--brand2);background:var(--panel2)}
.drop-veil{position:absolute;inset:0;background:rgba(43,127,255,.08);backdrop-filter:blur(2px);border:2.5px dashed var(--brand2);border-radius:16px;
  display:none;align-items:center;justify-content:center;z-index:10;margin:8px}
.drop-veil.show{display:flex;animation:fadeIn .15s}
.drop-veil-inner{font-size:16px;font-weight:800;color:var(--brand2)}

/* ---------------- History dialog ---------------- */
.modal-history{width:600px}
.history-toolbar{display:flex;align-items:center;gap:12px;padding:12px 24px;border-bottom:1px solid var(--border)}
.hb-check{display:flex;align-items:center;gap:7px;font-size:13px;font-weight:600;color:var(--ink2);cursor:pointer}
.hb-check input{width:16px;height:16px;accent-color:var(--brand2)}
.hb-spacer{flex:1}
.btn-danger-ghost{background:#fff;border:1px solid var(--border);border-radius:9px;padding:8px 13px;font-size:12.5px;font-weight:600;color:var(--err)}
.btn-danger-ghost:hover{background:#fdecec;border-color:#f4d0d1}
.history-body{min-height:200px;max-height:52vh}
.history-list{display:flex;flex-direction:column;gap:8px}
.history-item{display:flex;align-items:center;gap:12px;background:#fff;border:1px solid var(--border);border-radius:12px;padding:12px 14px;transition:.14s}
.history-item:hover{border-color:var(--brand2);box-shadow:0 4px 12px rgba(43,127,255,.1)}
.history-item.selected{border-color:var(--brand2);background:rgba(43,127,255,.04)}
.history-item input[type=checkbox]{width:17px;height:17px;accent-color:var(--brand2);flex-shrink:0}
.hi-main{flex:1;min-width:0;cursor:pointer}
.hi-title{font-weight:700;font-size:13.5px;color:var(--ink);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.hi-meta{font-size:11px;color:var(--muted);margin-top:3px}
.hi-open{background:var(--panel);border:1px solid var(--border);border-radius:8px;padding:6px 11px;font-size:12px;font-weight:600;color:var(--brand2);flex-shrink:0}
.hi-open:hover{background:#fff;border-color:var(--brand2)}
.history-empty{text-align:center;color:var(--muted);padding:50px 0;font-size:13.5px}

/* Example item actions */
.example-item{cursor:pointer}
.example-item .ex-body{display:flex;flex-direction:column;gap:2px}
.ex-actions{margin-top:6px}
.ex-data{background:var(--panel2);border:1px solid var(--border);border-radius:7px;padding:3px 9px;font-size:10.5px;font-weight:600;color:var(--ink2)}
.ex-data:hover{border-color:var(--brand2);color:var(--brand2);background:#fff}

/* user message attachments */
.umsg-files{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px;justify-content:flex-end}
.umsg-file{background:rgba(255,255,255,.22);border-radius:8px;padding:3px 9px;font-size:11.5px}

/* toast */
.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%) translateY(20px);background:var(--ink);color:#fff;
  padding:12px 20px;border-radius:12px;font-size:13px;font-weight:600;box-shadow:var(--shadow-lg);opacity:0;pointer-events:none;transition:.25s;z-index:100}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ---------------- 3D protein viewer ---------------- */
.p3d{position:relative;margin:14px 0 4px;border-radius:16px;background:#fff;overflow:hidden;
  border:1px solid transparent;background:
    linear-gradient(#fff,#fff) padding-box,
    linear-gradient(120deg,#12b5a5,#2b7fff,#7b4dff) border-box;
  box-shadow:0 12px 36px rgba(43,127,255,.16);animation:p3dIn .5s cubic-bezier(.2,.9,.3,1)}
@keyframes p3dIn{from{opacity:0;transform:translateY(14px) scale(.98)}to{opacity:1;transform:none}}
.p3d-head{display:flex;align-items:center;gap:10px;padding:12px 16px;border-bottom:1px solid var(--border);
  background:linear-gradient(120deg,rgba(18,181,165,.06),rgba(123,77,255,.06))}
.p3d-badge{font-size:10.5px;font-weight:800;letter-spacing:.04em;padding:4px 10px;border-radius:20px;color:#fff}
.p3d-badge.af{background:linear-gradient(120deg,#2b7fff,#7b4dff)}
.p3d-badge.pdb{background:linear-gradient(120deg,#12b5a5,#2b7fff)}
.p3d-name{font-weight:800;font-size:14px;color:var(--ink);flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.p3d-id{font-family:var(--mono);font-size:11.5px;color:var(--muted);background:var(--panel);padding:3px 9px;border-radius:6px;border:1px solid var(--border)}
.p3d-fs{background:var(--panel);border:1px solid var(--border);width:30px;height:30px;border-radius:8px;color:var(--ink2);font-size:14px}
.p3d-fs:hover{border-color:var(--brand2);color:var(--brand2)}
.p3d-stage{position:relative;height:440px;background:
  radial-gradient(ellipse at 50% 0%,rgba(43,127,255,.06),transparent 60%),#fff}
.p3d-viewport{position:absolute;inset:0;width:100%;height:100%}
.p3d-viewport canvas{border-radius:0}
.p3d-loading{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;
  color:var(--ink2);font-size:13px;font-weight:600;background:rgba(255,255,255,.85);backdrop-filter:blur(3px);transition:.4s;z-index:2}
.p3d-loading.hide{opacity:0;pointer-events:none}
.p3d-spinner{width:38px;height:38px;border:3.5px solid var(--panel2);border-top-color:var(--brand2);border-right-color:var(--brand3);border-radius:50%;animation:spin .8s linear infinite}
.p3d-controls{display:flex;flex-wrap:wrap;gap:10px;padding:12px 16px;border-top:1px solid var(--border);background:var(--panel)}
.p3d-group{display:flex;background:#fff;border:1px solid var(--border);border-radius:10px;overflow:hidden}
.p3d-group button{border:none;background:transparent;padding:8px 13px;font-size:12px;font-weight:700;color:var(--ink2);border-right:1px solid var(--border)}
.p3d-group button:last-child{border-right:none}
.p3d-group button:hover{background:var(--panel2);color:var(--ink)}
.p3d-group button.active{background:var(--grad);color:#fff}
.p3d-legend{display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding:10px 16px;border-top:1px solid var(--border);font-size:11px;color:var(--ink2)}
.p3d-legend .lg-t{font-weight:800;color:var(--ink)}
.p3d-legend .lg{display:flex;align-items:center;gap:5px}
.p3d-legend .lg i{width:12px;height:12px;border-radius:3px;display:inline-block}
.p3d:fullscreen{border-radius:0;display:flex;flex-direction:column}
.p3d:fullscreen .p3d-stage{flex:1;height:auto}
@media(max-width:640px){.p3d-stage{height:320px}.p3d-controls{gap:7px}.p3d-group button{padding:7px 10px;font-size:11px}}

/* jump-to-latest floating button */
.scroll-btn{position:absolute;right:26px;bottom:118px;width:40px;height:40px;border-radius:50%;border:1px solid var(--border);
  background:#fff;color:var(--brand2);font-size:19px;font-weight:800;box-shadow:var(--shadow-lg);z-index:20;
  display:flex;align-items:center;justify-content:center;opacity:0;transform:translateY(10px) scale(.9);pointer-events:none;transition:.2s}
.scroll-btn.show{opacity:1;transform:none;pointer-events:auto}
.scroll-btn:hover{border-color:var(--brand2);background:var(--panel);transform:translateY(-2px)}
@media(max-width:640px){.scroll-btn{right:14px;bottom:96px;width:38px;height:38px}}

/* report download button on final block */
.final-actions{margin-top:14px;padding-top:14px;border-top:1px solid var(--border);display:flex;justify-content:flex-end}
.btn-report{background:var(--grad);color:#fff;border:none;padding:9px 16px;border-radius:10px;font-weight:700;font-size:12.5px;box-shadow:0 4px 12px rgba(43,127,255,.24);transition:.14s}
.btn-report:hover{filter:brightness(1.06);transform:translateY(-1px)}

/* Scrollbars */
::-webkit-scrollbar{width:9px;height:9px}
::-webkit-scrollbar-thumb{background:#cfd8e6;border-radius:10px}
::-webkit-scrollbar-thumb:hover{background:#b7c3d6}
::-webkit-scrollbar-track{background:transparent}

/* Responsive */
@media(max-width:860px){
  .sidebar{position:fixed;z-index:40;height:100%;left:0;transform:translateX(-100%);transition:transform .25s ease;box-shadow:var(--shadow-lg);width:288px}
  #app.nav-collapsed .sidebar{width:288px;opacity:1;padding:16px 14px}
  #app.nav-collapsed .sidebar{width:288px;padding:16px 14px}
  #app.nav-collapsed .sb-logo{display:block}
  #app.nav-collapsed .sb-logo-mark{display:none}
  #app.nav-collapsed .lbl,#app.nav-collapsed .sb-label,#app.nav-collapsed .sb-examples,
  #app.nav-collapsed .lang-toggle,#app.nav-collapsed .sb-logout{display:block}
  #app.nav-collapsed .sb-btn{justify-content:flex-start;padding:11px 13px;gap:10px}
  .sidebar.open{transform:none}
  .cap-dropdown{display:none}
}
@media(max-width:640px){
  .topbar{height:50px;padding:0 12px;gap:8px}
  .provider-pill{padding:5px 10px;font-size:11.5px}
  .provider-pill span:last-child{display:none}
  .model-name{font-size:11px;max-width:150px;padding:6px 11px 6px 26px}
  .chat{padding:14px 12px 16px}
  .msg,.progress-wrap,.chat-inner,.msg-wrap{max-width:100%}
  /* welcome fits one screen */
  .welcome{padding:8px 0}
  .welcome-logo{height:44px;margin-bottom:10px}
  .welcome h1{font-size:23px;margin:4px 0}
  .welcome p{font-size:14px;margin-bottom:18px}
  .welcome-fx{height:280px;top:-30px}
  .welcome-fx .orb{filter:blur(26px);opacity:.4}
  .welcome-chips{gap:8px}
  .wchip{padding:11px 13px;font-size:12.5px;max-width:100%;width:100%}
  .composer{padding:10px 12px 12px}
  .composer-inner{padding:6px 6px 6px 12px}
  #input{font-size:14px}
  .composer-hint{display:none}
  .attach-area{max-width:100%}
  .modal{width:96vw;max-height:90dvh}
  .modal-history{width:96vw}
  .cap-menu{width:min(90vw,320px)}
}
@media(max-width:640px) and (max-height:720px){
  .welcome-fx{display:none}
  .welcome-chips .wchip:nth-child(n+3){display:none}
}