/* Private OIDC preview UI: shared navigation, form surfaces and practical worksheet. */
:root{font-family:system-ui,-apple-system,BlinkMacSystemFont,"Noto Sans KR","Segoe UI",sans-serif;color:#14223c;background:#f5f8fd;font-synthesis:none}
*{box-sizing:border-box}body{margin:0;min-height:100vh;display:flex;flex-direction:column;line-height:1.65}
a{color:inherit;text-decoration:none}a:focus-visible,button:focus-visible{outline:3px solid #2464db;outline-offset:4px}
.skip-link{position:absolute;top:-100px;left:16px;background:#fff;padding:12px 18px;z-index:10}.skip-link:focus{top:12px}
.topbar{display:flex;justify-content:space-between;align-items:center;padding:18px max(24px,calc((100% - 1100px)/2));background:#fff;border-bottom:1px solid #e1e8f3;gap:14px}
.brand{font-size:20px;font-weight:700;letter-spacing:-.03em}.mark{display:inline-grid;place-items:center;background:#2457bd;color:#fff;width:30px;height:30px;border-radius:9px;margin-right:10px}
.back{font-size:14px;color:#314967}.main{width:min(100% - 36px,680px);margin:auto;flex:1;display:flex;flex-direction:column;justify-content:center;padding:72px 0}
.panel{padding:clamp(24px,6vw,58px);background:#fff;border:1px solid #e1e8f3;border-radius:22px;box-shadow:0 14px 36px #1629500a}
.eyebrow{font-size:12px;font-weight:800;letter-spacing:.14em;color:#2457bd}
h1{font-size:clamp(29px,5vw,42px);line-height:1.25;letter-spacing:-.04em;margin:15px 0 20px}
.summary{margin:0;color:#52647c;font-size:16px}
.status{display:flex;align-items:center;gap:10px;margin:28px 0;padding:15px 17px;border-radius:10px;background:#f1f5fb;color:#405775;font-size:14px}
.status-dot{width:8px;height:8px;border-radius:50%;background:#7a91ae;flex:none}
.action{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:48px;border:0;background:#2457bd;color:#fff;font-weight:700;padding:11px 22px;border-radius:10px;cursor:pointer}.action:hover{background:#16418f}
.note{font-size:13px;color:#5b6f8b;margin:20px 7px 0}.footer{text-align:center;font-size:12px;color:#6f8098;padding:24px}
@media(max-width:600px){.topbar{padding:15px 20px}.brand{font-size:17px}.main{padding:36px 0}.panel{border-radius:16px}.summary{font-size:15px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;animation:none!important;transition:none!important}}

/* Industrial safety practical worksheet and protected admin status. */
.practice-main{width:min(100% - 32px,920px);padding:36px 0}.practice-panel{padding:clamp(23px,4vw,42px)}
.practice-panel label{display:block;margin:24px 0 8px;font-weight:700;color:#243c5c}
.practice-panel textarea,.practice-panel select{width:100%;font:inherit;color:#1c2940;background:#fff;border:1px solid #aab9d0;border-radius:11px;padding:13px;resize:vertical}
.practice-panel textarea:focus-visible,.practice-panel select:focus-visible{outline:3px solid #9fc0fa;border-color:#2457bd}
.practice-controls{display:flex;align-items:end;justify-content:space-between;gap:15px}.practice-controls>div:first-child{flex:1}.timer{display:flex;flex-direction:column;gap:2px;min-width:90px;text-align:right}.timer span{font-size:13px;color:#52647c}.timer output{font-size:24px;font-weight:750;font-variant-numeric:tabular-nums}
.practice-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}.practice-actions button{font:inherit;cursor:pointer}.ghost{display:inline-flex;align-items:center;justify-content:center;border:1px solid #a8bad3;border-radius:10px;background:white;padding:10px 16px;color:#26466e;font-weight:700;min-height:46px}.ghost:hover{background:#eaf1fc}.ghost:disabled{opacity:.45;cursor:not-allowed}.danger{color:#8f3545}
.admin-main{width:min(100% - 32px,850px)}.admin-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:30px 0}.admin-stats>div{background:#f1f5fc;border:1px solid #dce6f3;border-radius:13px;padding:20px 12px}.admin-stats span{display:block;font-size:13px;color:#52647c}.admin-stats strong{font-size:29px;color:#142e60;font-variant-numeric:tabular-nums}
@media(max-width:620px){.practice-controls{align-items:stretch;flex-direction:column}.practice-controls>div{width:100%}.timer{text-align:left}.admin-stats{grid-template-columns:1fr}.practice-actions button{flex:1}}

.draft-sync{padding:18px 20px;margin:24px 0;border:1px solid #d2dff2;border-radius:14px;background:#f8fbff}.draft-sync h2{font-size:19px;margin:0 0 8px}.draft-sync #draft-auth-state{font-size:14px;color:#37506f}.draft-sync .practice-actions{flex-wrap:wrap}.draft-sync .practice-actions button:disabled{opacity:.55;cursor:not-allowed}

/* Boolean hidden must override action/link display rules; avoid simultaneous login/logout. */
[hidden]{display:none!important}
@media(max-width:620px){
  /* Two readable touch targets per row instead of 4-5 narrow columns. */
  .practice-actions{display:grid;grid-template-columns:repeat(2,minmax(0,1fr))}
  .practice-actions>button,.practice-actions>a{min-width:0;width:100%;word-break:keep-all}
}

/* CBTOK social-only login — intentionally plain, fast and responsive. */
.login-main{width:min(100% - 32px,460px);padding:54px 0}
.login-panel{padding:42px clamp(24px,7vw,44px);border-radius:18px;box-shadow:0 10px 35px rgba(32,51,84,.055)}
.login-eyebrow{margin:0;color:#60748f;font-size:13px;font-weight:700;letter-spacing:.015em}
.login-panel h1{font-size:32px;line-height:1.3;margin:10px 0 10px;color:#172437;letter-spacing:-.045em}
.login-intro{margin:0;color:#687789;font-size:15px;line-height:1.5}
.login-providers{display:grid;gap:12px;margin-top:36px}
.social-login{position:relative;display:flex;justify-content:center;align-items:center;gap:10px;width:100%;height:52px;padding:0 22px;border-radius:12px;font-size:15px;font-weight:650;letter-spacing:-.025em;transition:filter .15s,border-color .15s}
.social-login:hover{filter:brightness(.975)}
.social-login:active{filter:brightness(.94)}
.social-icon{position:absolute;left:20px;width:20px;height:20px;flex:none}
.social-google{background:#fff;color:#1f1f1f;border:1px solid #cbd0d4}
.social-google:hover{border-color:#949b9d}
.social-kakao{background:#fee500;color:rgba(0,0,0,.85);border:1px solid #fee500}
.social-kakao .social-icon{color:#000}
.social-naver{background:#03a94d;color:#fff;border:1px solid #03a94d}
.login-footnote{margin:28px 0 0;color:#8893a2;text-align:center;font-size:12px;line-height:1.5}
@media(max-width:600px){.login-main{padding:32px 0}.login-panel{padding:34px 24px}.login-panel h1{font-size:30px}.social-login{height:52px}}
@media(prefers-reduced-motion:reduce){.social-login{transition:none}}
.social-login:focus-visible{outline:3px solid #2464db;outline-offset:4px}

/* Separate signup view on the existing login route, without scripts or new auth endpoints. */
.signup-panel{display:none}
.signup-panel:target{display:block}
.signup-panel:target ~ .signin-panel{display:none}
.account-switch{display:flex;flex-wrap:wrap;justify-content:center;gap:6px 12px;margin:28px 0 0;padding-top:24px;border-top:1px solid #e1e8f3;color:#52647c;font-size:14px}
.account-switch a{color:#2457bd;font-weight:750;text-decoration:underline;text-underline-offset:4px;padding:2px 0}
.signup-steps{display:flex;justify-content:space-between;gap:8px;list-style:none;padding:0;margin:26px 0;color:#52647c;font-size:12px}
.signup-steps li{display:flex;align-items:center;gap:5px}
.signup-steps span{display:inline-grid;place-items:center;flex:none;width:22px;height:22px;border-radius:50%;background:#eaf1fc;color:#2457bd;font-weight:750}
.signup-panel .login-providers{margin-top:24px}
.signup-guide{margin-top:24px;padding:16px;border-radius:12px;background:#f5f8fd;font-size:12px;line-height:1.7;color:#52647c;word-break:keep-all}
.signup-guide strong{color:#314967;font-size:13px}
.signup-guide p{margin:8px 0 0}
@media(max-width:360px){.signup-steps{font-size:11px;gap:4px}.signup-steps li{gap:3px}.signup-steps span{width:18px;height:18px}.social-login{padding-left:44px;padding-right:12px}}

[data-auth-nav]{display:flex;align-items:center;justify-content:flex-end;gap:12px;flex-wrap:wrap;margin-left:auto;font-size:14px}
[data-auth-nav] [hidden]{display:none!important}
[data-auth-nav] button{font:inherit;cursor:pointer;background:#123657;color:#fff;border:0;border-radius:8px;padding:10px 16px;min-height:44px}
[data-auth-nav] button:disabled{opacity:.65;cursor:wait}
[data-auth-nav] a{color:inherit;text-decoration:none;padding:8px}
[data-auth-status]:not(:empty){flex-basis:100%;max-width:320px;font-size:13px}
@media(max-width:480px){[data-auth-nav]{gap:4px}[data-auth-nav] a{padding:5px}[data-auth-nav] button{padding:8px 12px}}

/* Prominent signup navigation; enrollment remains suspended by server policy. */
.account-switch a.signup-link{display:inline-flex;align-items:center;justify-content:center;min-height:38px;padding:6px 16px;border:1px solid #2457bd;border-radius:9px;color:#2457bd;background:#fff;text-decoration:none}
.account-switch a.signup-link:hover{background:#edf3fd}
.signup-pause-note{font-size:12px;color:#687789}