/* MR LEE AI assistant: accessible offline-first lesson search.
   Shares original logo and Fresh/Future token, no paid assets or font files. */
:root{--ai-bg:#eff6ff;--ai-card:#fff;--ai-ink:#142f50;--ai-soft:#516987;--ai-border:#bbd7ef;--ai-accent:#1178c6}
html[data-mrlee-theme="future"]{--ai-bg:#04122b;--ai-card:#0a2348;--ai-ink:#eefaff;--ai-soft:#b8d4ee;--ai-border:#3072b0;--ai-accent:#56e7ff}
.mrlee-assistant-page{background:var(--ai-bg);color:var(--ai-ink);font:500 15px/1.7 "Be Vietnam Pro","Noto Sans KR",system-ui,sans-serif;min-height:100vh}
.mrlee-assistant-page *{box-sizing:border-box}
.ml-ai-skip{position:absolute;left:-999px;top:5px;z-index:100;padding:10px;background:#fff;color:#003764}
.ml-ai-skip:focus{left:10px}
.ml-ai-header{max-width:1390px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:15px 24px;border-bottom:1px solid var(--ai-border)}
.ml-ai-brand{display:flex;align-items:center;gap:12px;text-decoration:none;font-weight:850;font-size:15px;color:var(--ai-ink)!important}
.ml-ai-brand img{width:52px;height:48px;object-fit:contain}
.ml-ai-brand small{display:block;font-weight:500;font-size:10px;color:var(--ai-soft)}
.ml-ai-header nav{display:flex;gap:8px;flex-wrap:wrap}
.ml-ai-header nav a{color:var(--ai-ink)!important;text-decoration:none;padding:7px 10px;border-radius:9px;border:1px solid transparent;font-size:12px}
.ml-ai-header nav a:hover{border-color:var(--ai-border);background:var(--ai-card)}
.ml-ai-main{width:min(1270px,calc(100% - 30px));margin:18px auto 40px}
.ml-ai-hero{position:relative;overflow:hidden;display:flex;justify-content:space-between;align-items:center;gap:24px;min-height:240px;padding:clamp(22px,3vw,40px);border-radius:20px;border:1px solid var(--ai-border);background:linear-gradient(110deg,#0b264b,#185791);color:#eefaff;box-shadow:0 18px 34px #12345630}
html[data-mrlee-theme="future"] .ml-ai-hero{background:linear-gradient(110deg,#071530,#173c74)}
.ml-ai-hero>div:first-child{position:relative;z-index:1;max-width:770px}
.ml-ai-eyebrow{font-size:11px;font-weight:800;letter-spacing:.16em;color:#8ae8ff}
.ml-ai-hero h1{margin:10px 0;color:#fff!important;font:850 clamp(25px,3.5vw,45px)/1.25 "Be Vietnam Pro",system-ui,sans-serif}
.ml-ai-hero p{margin:0 0 12px;max-width:64ch;color:#d5e9fd!important}
.ml-ai-pills{display:flex;gap:8px;flex-wrap:wrap}
.ml-ai-pills span{border:1px solid #69b9e788;border-radius:999px;padding:4px 10px;background:#103d7288;font-size:11px}
.ml-ai-hero-art{flex:none;width:155px;height:155px;display:grid;place-items:center;border-radius:50%;border:1px solid #77d9ff;background:radial-gradient(circle,#2ad1f766,#111c5b88 65%);box-shadow:0 0 50px #2dceff4d}
.ml-ai-hangul{font-size:33px;font-weight:900;color:#f0fcff;line-height:1.08}.ml-ai-orbit{position:absolute;right:28px;top:20px;color:#90f6ff}
.ml-ai-workspace{margin:18px 0;padding:clamp(18px,2.5vw,31px);border:1px solid var(--ai-border);background:var(--ai-card);color:var(--ai-ink);border-radius:19px}
.ml-ai-toolbar{display:flex;justify-content:space-between;align-items:flex-start;gap:15px;flex-wrap:wrap}
.ml-ai-toolbar h2{margin:0;color:var(--ai-ink)!important;font-size:22px}
.ml-ai-toolbar p{margin:3px 0;color:var(--ai-soft)}
.ml-ai-toolbar label{font-size:13px;color:var(--ai-soft);font-weight:700}
.ml-ai-toolbar select{display:block;min-height:42px;border:1px solid var(--ai-border);border-radius:10px;background:var(--ai-bg);color:var(--ai-ink);padding:9px}
#aiForm{margin:20px 0 12px}
#aiQuery{display:block;width:100%;resize:vertical;min-height:100px;padding:16px;border:1px solid var(--ai-border);border-radius:13px;background:var(--ai-bg);color:var(--ai-ink);font:inherit}
.ml-ai-form-end{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap;margin-top:12px}
.ml-ai-presets{display:flex;gap:7px;flex-wrap:wrap}
.ml-ai-presets button{padding:8px 11px;border:1px solid var(--ai-border);border-radius:9px;background:var(--ai-bg);color:var(--ai-ink);cursor:pointer;font:inherit;font-size:12px}
.ml-ai-submit{min-height:42px;border:1px solid #6ce8ff;border-radius:11px;background:linear-gradient(100deg,#57ecff,#678dfb);color:#041730;font:850 13px "Be Vietnam Pro",system-ui,sans-serif;padding:10px 18px;cursor:pointer}
.ml-ai-submit:disabled{opacity:.6;cursor:wait}
.ml-ai-status{padding:11px 13px;border-radius:10px;background:var(--ai-bg);color:var(--ai-soft);font-size:13px}
.ml-ai-online{white-space:pre-wrap;line-height:1.7;margin:13px 0;color:var(--ai-ink)}
.ml-ai-results{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin-top:14px}
.ml-ai-result{min-width:0;padding:15px;border:1px solid var(--ai-border);border-radius:12px;background:var(--ai-bg)}
.ml-ai-result .ml-ai-type{display:block;color:var(--ai-accent);font-size:11px;font-weight:800}
.ml-ai-result h3{margin:4px 0 8px;font-size:15px;line-height:1.4}
.ml-ai-result :is(h3 a,footer a){color:var(--ai-accent)!important}
.ml-ai-result p{margin:5px 0;overflow-wrap:anywhere}
.ml-ai-ko{font-size:17px;font-weight:700;color:var(--ai-ink)}
.ml-ai-vi,.ml-ai-detail{font-size:13px;color:var(--ai-soft)}
.ml-ai-result footer{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin-top:10px}
.ml-ai-result footer button{padding:6px 9px;border:1px solid var(--ai-border);border-radius:8px;background:var(--ai-card);color:var(--ai-ink);cursor:pointer}
.ml-ai-empty{grid-column:1/-1;color:var(--ai-soft);padding:18px}
.ml-ai-disclaimer{font-size:12px;color:var(--ai-soft);padding:10px 4px}
.ml-ai-footer{text-align:center;padding:20px;color:var(--ai-soft);border-top:1px solid var(--ai-border)}
.ml-ai-footer a{color:var(--ai-accent)}
.ml-ai-visually-hidden{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.mrlee-assistant-page :is(a,button,input,select,textarea):focus-visible{outline:3px solid #ffc95a!important;outline-offset:3px!important}
@media(max-width:720px){.ml-ai-header{padding:11px 13px;flex-wrap:wrap}.ml-ai-header nav{overflow-x:auto;flex-wrap:nowrap;width:100%}.ml-ai-header nav a{flex:none}.ml-ai-hero-art{display:none}.ml-ai-main{width:calc(100% - 18px)}.ml-ai-workspace{padding:16px}.ml-ai-results{grid-template-columns:1fr}.ml-ai-submit{width:100%}}
@media(prefers-reduced-motion:reduce){.ml-ai-submit,.ml-ai-presets button{transition:none}}