/* ARCH AI 로그인 스타일 — login.html 의 <style> 1블록 (2026-09-27 분리). 캐시 무효화는 서버가 ?v=<해시> 로 처리. */

  :root{--gold:#5b2fc6;--gold-hi:#7c74ea; /* 브랜드 보라(미사용 잔존 변수 정리) */--ink:#fff;
    --sans:"Pretendard","Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
    --mono:"JetBrains Mono",ui-monospace,"SF Mono",Menlo,monospace;--err:#ff8a7a;}
  *{box-sizing:border-box}
  body{margin:0;font-family:var(--sans);color:var(--ink);background:#0b0d10;-webkit-font-smoothing:antialiased;letter-spacing:-.011em}
  /* 배경 사진 + 스크림 */
  .bg{position:fixed;inset:0;z-index:0;background:#0b0d10 center center/cover no-repeat;transition:opacity .5s}
  .bg::after{content:"";position:absolute;inset:0;
    background:linear-gradient(100deg,rgba(8,9,12,.82) 0%,rgba(8,9,12,.62) 44%,rgba(8,9,12,.30) 100%)}
  .wrap{position:relative;z-index:1;display:flex;align-items:center;justify-content:center;min-height:100svh;padding:48px 40px}
  .show{position:absolute;right:48px;bottom:48px;max-width:420px;text-align:right;pointer-events:none}
  .show h2{font-size:clamp(22px,2.2vw,30px);font-weight:600;letter-spacing:-.03em;line-height:1.2;margin:0 0 12px;color:#fff;text-shadow:0 2px 24px rgba(0,0,0,.5)}
  .show p{font-size:13px;line-height:1.55;color:rgba(255,255,255,.78);margin:0;text-shadow:0 1px 14px rgba(0,0,0,.5)}

  .backbtn{position:absolute;top:18px;left:22px;height:36px;display:inline-flex;align-items:center;gap:6px;color:rgba(255,255,255,.85);text-decoration:none;font-size:13px;padding:0 12px;border-radius:999px;z-index:3}
  .backbtn:hover{background:rgba(255,255,255,.10);color:#fff}
  .langwrap{position:absolute;top:18px;right:22px;height:36px;display:flex;align-items:center;z-index:3}
  .langbtn{display:inline-flex;align-items:center;height:36px;gap:7px;font-family:inherit;font-size:13px;color:rgba(255,255,255,.75);background:none;border:0;cursor:pointer;padding:0 2px;font-weight:500;letter-spacing:.02em}
  .langbtn:hover{color:#fff}
  .langtxt{line-height:1}
  .langcaret{font-size:10px;opacity:.8}
  .langmenu{position:absolute;top:calc(100% + 8px);right:0;min-width:96px;background:rgba(18,20,26,.97);border:1px solid rgba(255,255,255,.14);border-radius:12px;padding:6px;display:none;flex-direction:column;gap:2px;z-index:60;box-shadow:0 12px 32px rgba(0,0,0,.45)}
  .langwrap.open .langmenu{display:flex}
  .langmenu a{font-family:var(--mono);font-size:12px;letter-spacing:.08em;color:rgba(255,255,255,.72);text-decoration:none;padding:7px 12px;border-radius:8px}
  .langmenu a:hover{color:#fff;background:rgba(255,255,255,.08)}
  .langmenu a.on{color:#0a0c10;background:#fff}

  /* 글래스 폼 카드 */
  .panel{width:100%;max-width:404px;border-radius:24px;padding:40px 36px 34px;position:relative;isolation:isolate;
    background:rgba(255,255,255,.07);-webkit-backdrop-filter:blur(22px) saturate(160%);backdrop-filter:blur(22px) saturate(160%);
    border:1px solid rgba(255,255,255,.20);
    box-shadow:inset 0 1px 1px rgba(255,255,255,.55),inset 0 -2px 3px rgba(255,255,255,.10),0 24px 60px rgba(0,0,0,.45)}
  .brandwrap{display:flex;align-items:center;justify-content:center;margin-bottom:26px}
  .logo-full{height:28px;width:auto;fill:#fff;filter:drop-shadow(0 1px 3px rgba(0,0,0,.4))}
  h1{font-size:21px;font-weight:600;letter-spacing:-.02em;margin:0 0 6px;text-align:center;color:#fff}
  .sub{color:rgba(255,255,255,.65);font-size:13.5px;margin-bottom:24px;text-align:center}
  label{display:block;font-size:12px;color:rgba(255,255,255,.6);margin:14px 0 7px;font-weight:500}
  input.f{width:100%;padding:13px 14px;border:1px solid rgba(255,255,255,.18);border-radius:12px;font-size:14px;font-family:var(--sans);
    background:rgba(255,255,255,.06);color:#fff;transition:border-color .15s,background .15s}
  input.f::placeholder{color:rgba(255,255,255,.38)}
  input.f:focus{outline:none;border-color:#8b7cf6;background:rgba(255,255,255,.10)}
  .btn{width:100%;padding:14px;border:none;border-radius:999px;font-size:14px;font-weight:700;font-family:var(--sans);cursor:pointer;margin-top:18px;transition:transform .12s,background .15s}
  .btn:active{transform:translateY(1px)}
  .btn-primary{background:linear-gradient(135deg,#8b7cf6,#5ec8f2);color:#fff}.btn-primary:hover{filter:brightness(1.07)}
  .btn-signup{background:linear-gradient(135deg,#8b7cf6,#5ec8f2);color:#fff}.btn-signup:hover{filter:brightness(1.07)}
  .pwwrap{position:relative}
  .pwwrap input.f{padding-right:46px}
  .eye{position:absolute;right:6px;top:50%;transform:translateY(-50%);width:34px;height:34px;border:0;background:none;border-radius:9px;
       color:rgba(255,255,255,.48);cursor:pointer;display:grid;place-items:center;padding:0;transition:color .15s,background .15s}
  .eye:hover{color:rgba(255,255,255,.9);background:rgba(255,255,255,.08)}
  .eye:focus-visible{outline:2px solid #8b7cf6;outline-offset:1px}
  .eye svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
  .eye .ic-off{display:none}
  .eye.on .ic-on{display:none}
  .eye.on .ic-off{display:block}
  .keepwrap{display:flex;align-items:center;gap:9px;margin:14px 0 -2px;cursor:pointer;user-select:none}
  .keepwrap input{position:absolute;opacity:0;width:0;height:0}
  .keepbox{width:18px;height:18px;flex:0 0 18px;border-radius:5px;border:1.5px solid rgba(255,255,255,.28);
           background:rgba(255,255,255,.04);display:grid;place-items:center;transition:background .15s ease,border-color .15s ease}
  .keepbox svg{width:12px;height:12px;fill:none;stroke:#fff;stroke-width:3;stroke-linecap:round;stroke-linejoin:round;
               opacity:0;transform:scale(.6);transition:opacity .15s ease,transform .15s ease}
  .keepwrap input:checked+.keepbox{background:linear-gradient(135deg,#8b7cf6,#5ec8f2);border-color:transparent}
  .keepwrap input:checked+.keepbox svg{opacity:1;transform:scale(1)}
  .keepwrap input:focus-visible+.keepbox{outline:2px solid #8b7cf6;outline-offset:2px}
  .keeptxt{font-size:13px;color:rgba(255,255,255,.62);word-break:keep-all;overflow-wrap:break-word}
  .keepwrap:hover .keeptxt{color:rgba(255,255,255,.82)}
  .btn-google{background:#fff;color:#1f2430;margin-top:10px;display:flex;align-items:center;justify-content:center;gap:9px;font-weight:600}
  .btn-google:hover{background:#f1f1f1}
  .btn:disabled{opacity:.5;cursor:not-allowed}
  .gicon{width:17px;height:17px}
  .divider{display:flex;align-items:center;gap:10px;margin:20px 0 4px;color:rgba(255,255,255,.45);font-family:var(--mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase}
  .divider::before,.divider::after{content:"";flex:1;height:1px;background:rgba(255,255,255,.14)}
  .switch{text-align:center;font-size:13px;color:rgba(255,255,255,.62);margin-top:18px}
  .switch a{color:#9b8cff;cursor:pointer;font-weight:600;text-decoration:none}
  .switch a:hover{text-decoration:underline}
  .msg{font-size:13px;margin-top:14px;padding:11px 14px;border-radius:10px;display:none;line-height:1.55;text-align:center;word-break:keep-all;overflow-wrap:anywhere}
  .msg.err{display:block;background:rgba(180,69,58,.18);color:var(--err);border:1px solid rgba(255,138,122,.3)}
  .msg.ok{display:block;background:rgba(47,122,63,.18);color:#9be6ad;border:1px solid rgba(155,230,173,.3)}
  .footer{margin-top:28px;display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
  .footer a{color:rgba(255,255,255,.5);font-size:12px;text-decoration:none}.footer a:hover{color:rgba(255,255,255,.85)}
  /* ── (LG-1007) 로그인 | 가입 세그먼트 탭 + 가입 전용 요소(힌트·약관 동의) + 모드 전환 페이드 ── */
  .modetabs{position:relative;display:grid;grid-template-columns:1fr 1fr;padding:4px;margin:0 0 22px;border-radius:999px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14)}
  .mt-ind{position:absolute;top:4px;bottom:4px;left:4px;width:calc(50% - 4px);border-radius:999px;background:rgba(255,255,255,.94);box-shadow:0 2px 10px rgba(0,0,0,.28);transition:transform .22s cubic-bezier(.2,.8,.2,1)}
  .modetabs[data-m="signup"] .mt-ind{transform:translateX(100%)}
  .mt{position:relative;z-index:1;height:34px;border:0;background:none;border-radius:999px;font-family:inherit;font-size:13.5px;font-weight:600;color:rgba(255,255,255,.62);cursor:pointer;padding:0;transition:color .18s ease}
  .mt:hover{color:rgba(255,255,255,.9)}
  .mt.on{color:#0a0c10}
  .mt:focus-visible{outline:2px solid #8b7cf6;outline-offset:2px}
  .hint{display:none;font-size:12px;color:rgba(255,255,255,.5);margin:7px 2px 0}
  .consent{display:none;font-size:12px;line-height:1.55;color:rgba(255,255,255,.55);text-align:center;margin-top:12px;word-break:keep-all;overflow-wrap:break-word}
  .consent a{color:rgba(255,255,255,.85);text-decoration:underline;text-underline-offset:2px}
  body.m-signup .hint,body.m-signup .consent{display:block}
  .formbody.swap{animation:mFade .22s ease both}
  @media(prefers-reduced-motion:reduce){ .formbody.swap{animation:none} .mt-ind{transition:none} }
  @media (max-width:1400px){ .show{display:none} }
  @media (max-width:880px){ .wrap{padding:32px 20px} }

  /* ══ 모션 레이어 (M-0918) — 팝업·메뉴·화면 전환이 "팟" 뜨지 않고 자연스럽게 나타나도록.
     display 전환만 하던 오버레이에 공통 애니메이션을 입힌다. 기존 표시/숨김 로직(.show 토글)은 그대로.
     시스템 "동작 줄이기"를 켠 사용자에게는 전부 비활성(마지막 블록). ══ */
  @keyframes mFade{from{opacity:0}to{opacity:1}}
  @keyframes mPop{from{opacity:0;transform:translateY(10px) scale(.985)}to{opacity:1;transform:none}}
  @keyframes mPopSm{from{opacity:0;transform:translateY(-6px) scale(.98)}to{opacity:1;transform:none}}
  @keyframes mRise{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
  @keyframes mSlideR{from{opacity:0;transform:translateX(-14px)}to{opacity:1;transform:none}}
  @keyframes mZoom{from{opacity:0;transform:scale(.94)}to{opacity:1;transform:none}}
  .panel{animation:mPop .3s cubic-bezier(.2,.8,.2,1) both}
  .msg{animation:mPopSm .18s ease both}
  .btn,.switch{transition:filter .14s ease,transform .12s ease,border-color .14s ease}
  .btn:active{transform:scale(.99)}
  @media(prefers-reduced-motion:reduce){ .panel,.msg{animation:none!important} }

  /* ── 공용 다이얼로그 (브라우저 기본 alert/confirm/prompt 대체) ── */
  .adlg-bg{position:fixed;inset:0;z-index:20000;background:rgba(20,22,28,.42);-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);display:flex;align-items:center;justify-content:center;padding:20px;opacity:0;transition:opacity .16s ease}
  .adlg-bg.on{opacity:1}
  .adlg{width:100%;max-width:390px;background:#fff;border-radius:16px;box-shadow:0 18px 50px rgba(20,22,28,.24),0 2px 6px rgba(20,22,28,.08);padding:24px 24px 18px;transform:translateY(8px) scale(.985);transition:transform .18s cubic-bezier(.2,.8,.2,1)}
  .adlg-t{font-size:16px;font-weight:700;color:#0a0c10;letter-spacing:-.01em;margin:0 0 8px}
  .adlg-m{font-size:14px;line-height:1.7;color:#4a4e55;margin:0;white-space:pre-line;word-break:keep-all;overflow-wrap:break-word}
  .adlg-in{width:100%;margin-top:14px;padding:11px 13px;border:1px solid rgba(20,22,28,.16);border-radius:10px;font-size:14px;font-family:inherit;color:#0a0c10;outline:none;box-sizing:border-box}
  .adlg-b{display:flex;gap:8px;justify-content:flex-end;margin-top:20px}
  .adlg-btn{font-family:inherit;font-size:13.5px;font-weight:600;padding:10px 18px;border-radius:10px;border:0;cursor:pointer;transition:.14s}
  .adlg-no{background:#f1f1f3;color:#4a4e55}
  .adlg-yes{background:linear-gradient(135deg,#8b7cf6,#5ec8f2);color:#fff}
  .adlg-yes.danger{background:#dc2626}  /* (0920) iOS 사파리 입력 확대 방지 — 16px 미만 글자 입력칸을 누르면 화면이 확대돼 레이아웃이 틀어진다.
     터치 기기에서만 입력칸 글자를 16px로(데스크톱 디자인은 그대로). 사용자 핀치 확대는 막지 않는다. */
  @media (hover:none) and (pointer:coarse){
    input:not([type=checkbox]):not([type=radio]):not([type=range]):not([type=file]),textarea,select{font-size:16px!important}
  }
  /* (0920) 모바일: 홈으로·언어 버튼이 카드 위쪽과 겹치던 문제 — 카드를 버튼 줄 아래에서 시작 */
  @media (max-width:880px){
    .wrap{align-items:flex-start;padding-top:72px;padding-bottom:28px}
    .backbtn{top:14px;left:12px}
    .langwrap{top:14px!important;right:12px!important}
  }