:root{
  --navy:#003586; --navy-d:#002a6b; --blue:#00A0E9; --blue-soft:#e6f5fd;
  --ink:#1b2430; --muted:#5b6774; --line:#e2e8f0; --bg:#f4f6fa; --card:#ffffff;
  --ok:#1f8a4c; --ok-bg:#e7f6ee; --warn:#c47a05; --warn-bg:#fdf3e2; --bad:#c0392b; --bad-bg:#fdecea;
  --radius:12px; --shadow:0 1px 3px rgba(16,32,64,.06),0 6px 20px rgba(16,32,64,.05);
}
*{box-sizing:border-box}
html,body{margin:0;height:100%}
body{
  font-family:"Malgun Gothic","맑은 고딕",-apple-system,"Segoe UI",Roboto,sans-serif;
  color:var(--ink); background:var(--bg); font-size:15px; line-height:1.6;
}
button{font-family:inherit}
.app{display:grid;grid-template-columns:248px 1fr;min-height:100vh}

/* ---- Sidebar ---- */
.side{background:linear-gradient(180deg,var(--navy),var(--navy-d));color:#fff;padding:22px 16px;display:flex;flex-direction:column}
.brand{display:flex;align-items:center;gap:10px;margin-bottom:6px}
.brand .mark{width:34px;height:34px;border-radius:9px;background:var(--blue);display:grid;place-items:center;font-weight:800;color:#00284f;font-size:14px}
.brand h1{font-size:15px;margin:0;font-weight:700;letter-spacing:-.2px}
.brand small{display:block;color:#a9c6e8;font-size:11px;font-weight:400}
.tabs{margin-top:26px;display:flex;flex-direction:column;gap:6px}
.tab{display:flex;gap:11px;align-items:flex-start;background:transparent;border:0;color:#cfe0f4;text-align:left;padding:12px 12px;border-radius:10px;cursor:pointer;transition:.15s}
.tab:hover{background:rgba(255,255,255,.08);color:#fff}
.tab.active{background:#fff;color:var(--navy)}
.tab .n{font-weight:800;font-size:13px;opacity:.7;min-width:16px}
.tab.active .n{color:var(--blue);opacity:1}
.tab b{display:block;font-size:14px}
.tab span{display:block;font-size:11px;color:inherit;opacity:.8;font-weight:400}
.side .foot{margin-top:auto;font-size:11px;color:#9fbbe0;border-top:1px solid rgba(255,255,255,.12);padding-top:14px}
.side .foot .dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:#5fd08a;margin-right:6px;vertical-align:middle}

/* ---- Main ---- */
.main{padding:30px 34px;overflow:auto;max-height:100vh}
.head{margin-bottom:18px}
.head h2{margin:0 0 4px;font-size:22px;letter-spacing:-.4px}
.head p{margin:0;color:var(--muted);font-size:13.5px}
.panel{display:none;animation:fade .25s ease}
.panel.active{display:block}
@keyframes fade{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}

.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px;margin-bottom:18px}
.card h3{margin:0 0 12px;font-size:15px;color:var(--navy);display:flex;align-items:center;gap:8px}
.card h3::before{content:"";width:4px;height:15px;background:var(--blue);border-radius:2px}

textarea,input[type=text]{width:100%;border:1px solid var(--line);border-radius:10px;padding:12px 14px;font-family:inherit;font-size:14.5px;resize:vertical;outline:none}
textarea:focus,input[type=text]:focus{border-color:var(--blue);box-shadow:0 0 0 3px var(--blue-soft)}
.chips{display:flex;flex-wrap:wrap;gap:7px;margin:11px 0}
.chip{background:var(--blue-soft);color:var(--navy);border:1px solid #cbe8fb;border-radius:999px;padding:6px 13px;font-size:12.5px;cursor:pointer;transition:.15s}
.chip:hover{background:var(--blue);color:#fff;border-color:var(--blue)}
.row{display:flex;gap:10px;align-items:center;margin-top:12px;flex-wrap:wrap}
.btn{background:var(--navy);color:#fff;border:0;border-radius:10px;padding:11px 22px;font-size:14.5px;font-weight:600;cursor:pointer;transition:.15s}
.btn:hover{background:var(--blue)}
.btn:disabled{opacity:.5;cursor:not-allowed}
.btn.ghost{background:#fff;color:var(--navy);border:1px solid var(--line)}

.badge{display:inline-flex;align-items:center;gap:5px;font-size:12px;font-weight:700;padding:4px 11px;border-radius:999px}
.badge.time{background:#eef2f8;color:var(--navy)}
.badge.mode{background:var(--blue-soft);color:var(--navy)}
.badge.ok{background:var(--ok-bg);color:var(--ok)}
.badge.warn{background:var(--warn-bg);color:var(--warn)}
.badge.bad{background:var(--bad-bg);color:var(--bad)}
.metabar{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:12px}

.answer{white-space:pre-wrap;font-size:14.8px;line-height:1.75;min-height:26px}
.answer .cite{color:var(--blue);font-weight:700}
.cursor{display:inline-block;width:8px;height:15px;background:var(--blue);animation:blink 1s steps(2) infinite;vertical-align:text-bottom}
@keyframes blink{50%{opacity:0}}

.cite-box{border:1px solid var(--line);border-left:4px solid var(--blue);background:#fbfdff;border-radius:8px;padding:12px 14px;margin-top:10px}
.cite-box .h{display:flex;justify-content:space-between;align-items:center;gap:8px;margin-bottom:6px}
.cite-box .h b{font-size:13.5px;color:var(--navy)}
.cite-box .h .sec{font-size:12px;color:var(--muted)}
.cite-box .h .sc{font-size:11px;color:var(--muted);white-space:nowrap}
.cite-box .t{font-size:13px;color:#33414f;white-space:pre-wrap;max-height:150px;overflow:auto}
.tag{display:inline-block;font-size:11px;background:var(--navy);color:#fff;border-radius:6px;padding:1px 7px;margin-right:6px}

table{width:100%;border-collapse:collapse;font-size:13.5px}
th,td{border:1px solid var(--line);padding:9px 11px;text-align:left;vertical-align:top}
th{background:#f2f6fb;color:var(--navy);font-weight:700;font-size:12.5px}
td.k{background:#fafcfe;font-weight:600;color:var(--navy);width:150px}

/* drop zone */
.drop{border:2px dashed #bcd4ea;border-radius:12px;padding:30px;text-align:center;color:var(--muted);cursor:pointer;transition:.15s;background:#fbfdff}
.drop.over{border-color:var(--blue);background:var(--blue-soft)}
.drop b{color:var(--navy)}
.drop .ico{font-size:30px}
.filepick{display:none}

/* NCS stepper */
.stepper{position:relative;margin-top:6px;padding-left:8px}
.step{position:relative;padding:0 0 16px 26px;border-left:2px solid var(--line)}
.step:last-child{border-left-color:transparent}
.step .dot{position:absolute;left:-8px;top:2px;width:16px;height:16px;border-radius:50%;background:#fff;border:3px solid var(--blue)}
.step .lv{font-size:11.5px;color:var(--blue);font-weight:700;letter-spacing:.3px}
.step .nm{font-size:14.5px;font-weight:600;color:var(--ink)}
.step .cd{font-size:11.5px;color:var(--muted);font-family:Consolas,monospace}
.step .nt{font-size:12px;color:var(--muted)}
.match-card{background:linear-gradient(180deg,#f5fbff,#fff);border:1px solid #cbe8fb;border-radius:10px;padding:14px 16px;margin-bottom:14px}
.match-card .code{font-family:Consolas,monospace;background:var(--navy);color:#fff;padding:2px 9px;border-radius:6px;font-size:12.5px}
.conf{height:8px;background:#eef2f8;border-radius:5px;overflow:hidden;margin-top:8px}
.conf > i{display:block;height:100%;background:linear-gradient(90deg,var(--blue),var(--navy))}

.hint{font-size:12px;color:var(--muted);margin-top:8px}
.empty{color:var(--muted);font-size:13.5px;text-align:center;padding:18px}
.spin{width:15px;height:15px;border:2px solid #cfe0f4;border-top-color:var(--navy);border-radius:50%;display:inline-block;animation:sp .7s linear infinite;vertical-align:-2px;margin-right:6px}
@keyframes sp{to{transform:rotate(360deg)}}
.majgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:6px;margin-top:6px}
.majgrid .m{font-size:12px;background:#f2f6fb;border:1px solid var(--line);border-radius:7px;padding:6px 9px}
.majgrid .m b{color:var(--navy);font-family:Consolas,monospace;margin-right:6px}
@media(max-width:820px){.app{grid-template-columns:1fr}.side{flex-direction:row;flex-wrap:wrap;align-items:center}.tabs{flex-direction:row;margin-top:0}.side .foot{display:none}.main{padding:20px}}