/* TetherHub 공통 디자인
   방향: 은행 앱처럼 차분한 남색 바탕, 숫자가 가장 잘 보이는 화면, 포인트 색은 청록 하나만 */
:root{
  --bg:#f2f5f8;          /* 페이지 바탕 */
  --surface:#ffffff;     /* 카드 */
  --sunken:#f7f9fb;      /* 카드 안쪽 영역 */
  --ink:#0d1b2a;         /* 본문 글자 */
  --muted:#5a6a7b;       /* 보조 글자 */
  --line:#dde4eb;        /* 구분선 */
  --navy:#0c2340;        /* 머리 영역 */
  --navy-2:#13325a;
  --navy-ink:#eaf2fa;
  --navy-muted:#9fb3c8;
  --accent:#0b8a80;      /* 청록 포인트 */
  --accent-strong:#08736b;
  --accent-soft:#e2f3f1;
  --warn:#a86a12; --warn-soft:#fbf0dc;
  --bad:#b8382b;  --bad-soft:#fbe6e3;
  --btn:#0c2340;  --btn-ink:#ffffff;
  --shadow:0 1px 2px rgba(13,27,42,.06),0 8px 24px rgba(13,27,42,.06);
  --body:"IBM Plex Sans KR","Apple SD Gothic Neo","Malgun Gothic",sans-serif;
  --num:"IBM Plex Mono",ui-monospace,Consolas,monospace;
  color-scheme:light;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#0a1520; --surface:#111f2e; --sunken:#0d1a27; --ink:#e7eef5; --muted:#93a4b5; --line:#213448;
    --navy:#071321; --navy-2:#0d2036; --navy-ink:#e3edf6; --navy-muted:#8ea3b8;
    --accent:#33c0b3; --accent-strong:#4fd3c6; --accent-soft:#0f3534;
    --warn:#e2a94b; --warn-soft:#352812; --bad:#f08273; --bad-soft:#3a1c18;
    --btn:#33c0b3; --btn-ink:#04201d; --shadow:none; color-scheme:dark}
}
:root[data-theme="dark"]{
  --bg:#0a1520; --surface:#111f2e; --sunken:#0d1a27; --ink:#e7eef5; --muted:#93a4b5; --line:#213448;
  --navy:#071321; --navy-2:#0d2036; --navy-ink:#e3edf6; --navy-muted:#8ea3b8;
  --accent:#33c0b3; --accent-strong:#4fd3c6; --accent-soft:#0f3534;
  --warn:#e2a94b; --warn-soft:#352812; --bad:#f08273; --bad-soft:#3a1c18;
  --btn:#33c0b3; --btn-ink:#04201d; --shadow:none; color-scheme:dark}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--body);font-size:15px;line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:var(--accent)}
h1,h2,h3{text-wrap:balance;letter-spacing:-.02em;line-height:1.3}
.num{font-family:var(--num);font-variant-numeric:tabular-nums;letter-spacing:-.01em}
.wrap{max-width:1120px;margin:0 auto;padding-left:max(20px,env(safe-area-inset-left,0px));padding-right:max(20px,env(safe-area-inset-right,0px))}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
@media (prefers-reduced-motion: reduce){*{transition:none!important;animation:none!important}}

/* 머리 영역 */
.top{background:var(--navy);color:var(--navy-ink);padding-top:env(safe-area-inset-top,0px)}
.topbar{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-block:14px;border-bottom:1px solid rgba(255,255,255,.08)}
.brand{display:flex;align-items:center;gap:10px;color:inherit;text-decoration:none;font-weight:700;font-size:17px;letter-spacing:-.02em}
.brand svg{flex:none}
.nav{display:flex;gap:4px;align-items:center}
.nav a{color:var(--navy-muted);text-decoration:none;font-size:14px;padding:6px 10px;border-radius:6px}
.nav a:hover{color:var(--navy-ink);background:rgba(255,255,255,.06)}
.acct{display:flex;gap:8px;align-items:center;font-size:14px}
.acct .who{color:var(--navy-muted)}
.msgbell{display:inline-flex;align-items:center;gap:6px;padding:6px 11px;border-radius:999px;background:var(--accent);color:#04201d;font-size:13px;font-weight:700;text-decoration:none;white-space:nowrap}
.msgbell b{display:inline-grid;place-items:center;min-width:20px;height:20px;padding:0 5px;border-radius:10px;background:#fff;color:var(--bad);font-size:12px}
.btn-ghost,.btn-solid{font:inherit;font-size:14px;font-weight:600;border-radius:8px;padding:7px 14px;text-decoration:none;cursor:pointer;white-space:nowrap}
.btn-ghost{background:transparent;color:var(--navy-ink);border:1px solid rgba(255,255,255,.22)}
.btn-ghost:hover{border-color:rgba(255,255,255,.5)}
.btn-solid{background:var(--accent);color:#fff;border:1px solid var(--accent)}
.nav a.on{color:#fff;font-weight:700}
.nav .nav-cnt{display:inline-grid;place-items:center;min-width:18px;height:18px;padding:0 5px;margin-left:4px;border-radius:9px;background:var(--bad);color:#fff;font-size:11px;font-family:var(--num)}
.nav .nav-cnt.deal{background:var(--accent)}
.nav .nav-out{border:0;background:transparent;color:var(--navy-muted);font:inherit;font-size:14px;padding:6px 10px;border-radius:6px;cursor:pointer}
.nav .nav-out:hover{color:var(--navy-ink);background:rgba(255,255,255,.06)}
@media (min-width:761px){.nav{flex:1;min-width:0;flex-wrap:wrap}.nav .nav-out{margin-left:auto}.nav .nav-login{display:none}}
/* 휴대폰: 로고 줄 아래 메뉴 줄 (옆으로 넘겨 보기) */
@media (max-width:760px){
  .top{position:sticky;top:0;z-index:30}
  .topbar{flex-wrap:wrap;gap:10px 12px;padding-block:10px 0;border-bottom:0}
  .nav{order:3;flex:1 0 100%;display:flex;gap:6px;overflow-x:auto;overscroll-behavior-x:contain;scrollbar-width:none;-webkit-overflow-scrolling:touch;
    margin:0 calc(-1 * max(20px,env(safe-area-inset-left,0px)));padding:2px max(20px,env(safe-area-inset-left,0px)) 10px;
    -webkit-mask-image:linear-gradient(90deg,#000 calc(100% - 28px),transparent);mask-image:linear-gradient(90deg,#000 calc(100% - 28px),transparent)}
  .nav::-webkit-scrollbar{display:none}
  .nav a,.nav .nav-out{flex:none;display:inline-flex;align-items:center;min-height:36px;padding:0 14px;border-radius:999px;background:rgba(255,255,255,.07);color:var(--navy-ink);font-size:14px;white-space:nowrap}
  .nav a.on{background:var(--accent);color:#04201d}
  .nav .nav-out{color:var(--navy-muted);background:transparent;border:1px solid rgba(255,255,255,.16)}
  .nav .nav-login{background:transparent;border:1px solid rgba(255,255,255,.22)}
  .support-fab{bottom:calc(16px + env(safe-area-inset-bottom,0px));right:calc(12px + env(safe-area-inset-right,0px));padding:12px}
}

/* 버튼, 알림 */
.btn{display:block;width:100%;border:0;border-radius:10px;padding:15px;font:inherit;font-weight:700;font-size:16px;background:var(--btn);color:var(--btn-ink);cursor:pointer;text-align:center;text-decoration:none;transition:filter .15s}
.btn:hover{filter:brightness(1.12)}
.btn:disabled{opacity:.45;cursor:default;filter:none}
.alert{border-radius:10px;padding:12px 14px;font-size:14px;display:flex;gap:10px;align-items:flex-start}
.alert.bad{background:var(--bad-soft);color:var(--bad)}
.alert.warn{background:var(--warn-soft);color:var(--warn)}
.alert.info{background:var(--accent-soft);color:var(--accent-strong)}
.note{font-size:12.5px;color:var(--muted)}
.card{background:var(--surface);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow)}

/* 바닥 */
.foot{border-top:1px solid var(--line);margin-top:56px;padding-block:28px 40px;color:var(--muted);font-size:12.5px}
.foot .wrap{display:grid;gap:10px}
.foot b{color:var(--ink);font-weight:600}
.foot-links{display:flex;flex-wrap:wrap;gap:6px 18px}
.foot-links a{color:var(--muted);text-decoration:none}

/* 가입, 로그인 */
.auth{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,440px);gap:48px;align-items:center;padding-block:48px}
@media (max-width:860px){.auth{grid-template-columns:1fr;gap:24px;padding-block:28px}.auth-side{order:2}}
.auth-side h2{font-size:26px;margin:0 0 12px}
.auth-side p{color:var(--muted);margin:0 0 20px;max-width:46ch}
.checks{list-style:none;margin:0;padding:0;display:grid;gap:14px}
.checks li{display:grid;grid-template-columns:28px minmax(0,1fr);gap:10px;align-items:start}
.checks b{display:block;font-size:15px}
.checks span{font-size:13.5px;color:var(--muted)}
.ico{width:28px;height:28px;border-radius:8px;background:var(--accent-soft);color:var(--accent);display:grid;place-items:center}
.form{padding:28px;display:grid;gap:16px}
.form h1{font-size:24px;margin:0}
.form .lead{color:var(--muted);margin:4px 0 0;font-size:14px}
.form label{display:grid;gap:6px;font-size:13px;color:var(--muted);font-weight:600}
.form input{border:1px solid var(--line);background:var(--sunken);color:var(--ink);border-radius:10px;padding:12px 14px;font:inherit;font-size:15px;transition:border-color .15s}
.form input:focus{border-color:var(--accent);outline:none;box-shadow:0 0 0 3px var(--accent-soft)}
.form .hint{font-size:12px;color:var(--muted);font-weight:400}
.form .switch{text-align:center;font-size:14px;color:var(--muted);margin:0}
.steps-mini{display:flex;gap:6px;font-size:12px;color:var(--muted)}
.steps-mini span{padding:3px 9px;border-radius:999px;background:var(--sunken);border:1px solid var(--line)}
.steps-mini .on{background:var(--accent-soft);border-color:transparent;color:var(--accent-strong);font-weight:600}

/* 고객센터 텔레그램 버튼 */
.support-fab{position:fixed;right:calc(20px + env(safe-area-inset-right,0px));bottom:calc(20px + env(safe-area-inset-bottom,0px));z-index:15;display:inline-flex;align-items:center;gap:8px;padding:12px 16px;border-radius:999px;background:#229ED9;color:#fff;font-weight:600;font-size:14px;text-decoration:none;box-shadow:0 6px 20px rgba(13,27,42,.22);cursor:pointer}
.support-fab:hover{filter:brightness(1.08)}
@media (max-width:520px){.support-fab span{display:none}.support-fab{padding:14px}}
/* 계정 상태 안내 */
.status-banner{display:flex;flex-wrap:wrap;gap:8px 16px;align-items:center;justify-content:space-between;padding:14px 16px;border-radius:12px;margin-bottom:16px;font-size:14px}
.status-banner b{display:block;font-size:15px}
.status-banner.wait{background:var(--warn-soft);color:var(--warn)}
.status-banner.no{background:var(--bad-soft);color:var(--bad)}
.status-banner a{font-weight:600;color:inherit}

/* 공지·주의사항 팝업 */
.nt-wrap{position:fixed;inset:0;z-index:40;background:rgba(7,19,33,.55);display:grid;place-items:center;padding:20px max(16px,env(safe-area-inset-right,0px)) 20px max(16px,env(safe-area-inset-left,0px))}
.nt-box{width:min(480px,100%);max-height:calc(100vh - 40px);display:flex;flex-direction:column;background:var(--surface);color:var(--ink);border-radius:16px;overflow:hidden;box-shadow:0 20px 60px rgba(0,0,0,.3)}
.nt-head{display:flex;justify-content:space-between;align-items:center;padding:14px 20px;background:var(--navy);color:#fff}
.nt-head.caution{background:var(--warn)}
.nt-kind{font-weight:700;font-size:14px;letter-spacing:.02em}
.nt-page{font-family:var(--num);font-size:12.5px;opacity:.85}
.nt-body{padding:20px 22px;overflow-y:auto}
.nt-body h2{font-size:19px;margin:0 0 10px}
.nt-text{white-space:pre-wrap;overflow-wrap:anywhere;font-size:14.5px;line-height:1.7;color:var(--ink)}
.nt-nav{display:flex;gap:8px;justify-content:center;padding:0 20px 12px}
.nt-nav button{border:1px solid var(--line);background:var(--surface);color:var(--ink);border-radius:8px;padding:6px 14px;font:inherit;font-size:13px;cursor:pointer}
.nt-nav button:disabled{opacity:.4;cursor:default}
.nt-foot{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--line)}
.nt-foot button{border:0;background:var(--surface);color:var(--muted);padding:15px;font:inherit;font-size:14px;cursor:pointer}
.nt-foot button+button{border-left:1px solid var(--line);color:var(--ink);font-weight:700}
.nt-foot button:hover{background:var(--sunken)}

/* 구매자 ↔ 판매자 스위치 */
.modesw{position:relative;display:inline-grid;grid-template-columns:1fr 1fr;align-items:center;padding:3px;border-radius:999px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.22);flex:none}
.modesw-knob{position:absolute;top:3px;bottom:3px;left:3px;width:calc(50% - 3px);border-radius:999px;background:var(--accent);box-shadow:0 2px 6px rgba(0,0,0,.25);transition:transform .3s cubic-bezier(.3,.7,.3,1)}
.modesw.is-seller .modesw-knob{transform:translateX(100%)}
.modesw button{position:relative;z-index:1;border:0;background:transparent;color:var(--navy-muted);font:inherit;font-size:13px;font-weight:600;padding:5px 14px;border-radius:999px;cursor:pointer;white-space:nowrap;transition:color .3s}
.modesw button[aria-checked="true"]{color:#fff}
.modesw button:focus-visible{outline:2px solid #fff;outline-offset:1px}
.modesw.is-busy{pointer-events:none}
.modesw.is-busy .modesw-knob{animation:swPulse 1s ease-in-out infinite}
@keyframes swPulse{50%{filter:brightness(1.25)}}
@media (prefers-reduced-motion: reduce){.modesw-knob,.modesw button{transition:none}}
@media (max-width:520px){.acct .who{display:none}.msgbell .t{display:none}.msgbell{padding:6px 8px}.topbar:has(.msgbell) .brand-word{display:none}}
.alert[hidden]{display:none!important}
/* 운영자가 고객 화면을 볼 때 위쪽 띠 */
.adminbar{position:sticky;top:0;z-index:25;display:flex;flex-wrap:wrap;gap:6px 14px;align-items:center;justify-content:center;padding:8px max(16px,env(safe-area-inset-right,0px)) 8px max(16px,env(safe-area-inset-left,0px));background:#7a4b00;color:#fff;font-size:13.5px}
.adminbar button{border:1px solid rgba(255,255,255,.6);background:transparent;color:#fff;border-radius:8px;padding:5px 12px;font:inherit;font-size:13px;font-weight:700;cursor:pointer}

/* 사이트 바닥 */
.site-foot{margin-top:64px;border-top:1px solid var(--line);background:var(--sunken);color:var(--muted);font-size:13px;line-height:1.75}
.ft-grid{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,.8fr) minmax(0,1.2fr);gap:32px;padding-block:36px 24px}
@media (max-width:860px){.ft-grid{grid-template-columns:1fr 1fr}.ft-brand{grid-column:1/-1}}
@media (max-width:520px){.ft-grid{grid-template-columns:1fr}}
.ft-col{min-width:0}
.ft-logo{display:inline-flex;align-items:center;gap:8px;font-weight:700;font-size:17px;color:var(--muted);text-decoration:none;margin-bottom:10px}
.ft-brand p{margin:0 0 14px}
.ft-brand i{font-style:normal;opacity:.5;margin:0 4px}
.ft-risk{font-size:12.5px}
.ft-todo{color:var(--warn);font-size:12px}
.ft-social{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:50%;color:var(--muted);border:1px solid var(--line)}
.ft-social:hover{color:var(--accent);border-color:var(--accent)}
.ft-links{display:grid;gap:6px;align-content:start}
.ft-links a{color:var(--muted);text-decoration:none;width:max-content;max-width:100%}
.ft-links a:hover{color:var(--ink);text-decoration:underline}
.ft-links b{color:var(--ink)}
.ft-contact{display:grid;grid-template-columns:max-content minmax(0,1fr);gap:6px 18px;margin:0;align-content:start}
.ft-contact dt{color:var(--muted)}
.ft-contact dd{margin:0;color:var(--ink);overflow-wrap:anywhere}
.ft-contact a{color:var(--ink);text-decoration:none}
.ft-copy{padding-block:14px 28px;border-top:1px solid var(--line);font-size:12px}

/* 로고 */
.brand{gap:9px}
.brand-mark{width:30px;height:30px;flex:none}
.brand-word{height:15px;width:auto;display:block}
.side .brand span{display:grid;gap:4px}
.side .brand .brand-word{height:14px}
.ft-logo{gap:8px}
.ft-logo img{display:block;width:auto}
.ft-logo picture:first-child img{height:28px}
.ft-logo picture:last-child img{height:14px}
@media (max-width:380px){.topbar .brand-word{height:12px}}

.nt-body.has-img{padding:0 0 18px}
.nt-body.has-img h2,.nt-body.has-img .nt-text{padding:0 22px}
.nt-body.has-img h2{margin-top:16px}
.nt-img{display:block;width:100%;height:auto;max-height:70vh;object-fit:contain;background:var(--sunken)}
.nt-body.has-img .nt-img:only-child,.nt-body.has-img .nt-img + .nt-sr + *{margin-bottom:0}
.nt-sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.nt-body.has-img:has(.nt-sr){padding-bottom:0}

/* 실시간 거래 완료 */
.recent{padding:16px 20px;margin-bottom:16px}
.rt-head{display:flex;flex-wrap:wrap;align-items:center;gap:6px 10px;margin-bottom:10px}
.rt-head b{font-size:15px}
.rt-note{font-size:12px;color:var(--muted)}
.rt-live{width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px var(--accent-soft)}
.rt-list{list-style:none;margin:0;padding:0;display:grid;gap:2px}
.rt-list li{display:flex;justify-content:space-between;gap:12px;padding:7px 0;border-top:1px solid var(--line);font-size:14px}
.rt-list li:first-child{border-top:0}
.rt-list li span{min-width:0;overflow-wrap:anywhere}
.rt-list time{color:var(--muted);font-size:12.5px;white-space:nowrap}
.rt-new{animation:rtIn 1.6s ease}
@keyframes rtIn{from{background:var(--accent-soft)}to{background:transparent}}

.rt-sample{font-size:12px;font-weight:700;color:var(--warn);background:var(--warn-soft);border-radius:999px;padding:2px 9px}
@media (max-width:420px){.top .brand-word{height:11px}.topbar:has(.modesw) .brand-word{display:none}.acct{gap:6px}.acct .btn-ghost,.acct .btn-solid{padding:7px 10px}}