*{box-sizing:border-box}
body{margin:0;font:16px/1.5 system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:var(--outer,#d5d8dc);color:#1f2937}
.site{max-width:1240px;min-height:100vh;margin:0 auto;background:var(--bg,#f0f0f1);box-shadow:0 0 18px rgba(0,0,0,.12)}
@media(min-width:1300px){.site{margin:20px auto;min-height:calc(100vh - 40px);border-radius:8px;overflow:hidden}}
.wrap{max-width:1120px;margin:0 auto;padding:0 16px}
.top{background:var(--header,#1d2327);color:var(--on-header,#fff);padding:12px 0}
.top .wrap{display:flex;justify-content:space-between;align-items:center}
.top a{color:var(--on-header,#fff);text-decoration:none}.logo{display:block;height:var(--logo-h,36px);max-width:100%;width:auto}.brand{font-weight:700}
.top nav a,.top nav span{margin-left:16px;font-size:14px}
main{padding-bottom:48px}
h1{margin:24px 0 12px}h2{margin:28px 0 8px}
.card{background:#fff;border:1px solid #e5e7eb;border-radius:8px;padding:16px;margin:12px 0}
.card.narrow{max-width:420px;margin:48px auto}
.card.row{display:flex;justify-content:space-between;align-items:center;gap:12px}
fieldset.card{display:block}legend{font-weight:700;padding:0 6px}
.right{border-left:5px solid #16a34a}.wrong{border-left:5px solid #dc2626}
.prompt{font-size:17px;margin:6px 0 10px}
.muted{color:#6b7280}.small{font-size:13px}
.big{font-size:32px;font-weight:700}
label{display:block;margin:8px 0;font-weight:600}
.opt{display:block;font-weight:400;padding:6px 8px;border-radius:6px}
.is-correct{background:#dcfce7}.is-wrong{background:#fee2e2}
.tag{font-size:12px;padding:1px 6px;border-radius:10px}.tag.ok{background:#16a34a;color:#fff}.tag.bad{background:#dc2626;color:#fff}
input[type=number],input[type=text],input[type=email],input[type=password],input[type=datetime-local],select,textarea{width:100%;padding:9px;border:1px solid #d1d5db;border-radius:6px;font:inherit;margin-top:4px}
textarea{min-height:110px}
button,.btn{display:inline-block;background:var(--primary,#3858e9);color:var(--on-primary,#fff);border:0;border-radius:6px;padding:10px 18px;font:inherit;font-weight:600;cursor:pointer;text-decoration:none}
.btn.secondary,button.secondary{background:#e5e7eb;color:#1f2937}
button.danger{background:#dc2626}
.flash{padding:10px 14px;border-radius:6px;margin:16px 0}.flash.error{background:#fee2e2;color:#991b1b}.flash.ok{background:#dcfce7;color:#166534}
table{width:100%;border-collapse:collapse;background:#fff;border:1px solid #e5e7eb;border-radius:8px}
th,td{text-align:left;padding:8px 10px;border-bottom:1px solid #e5e7eb}
th{background:#f9fafb;font-size:13px}
.inline{display:inline}.grid2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media(max-width:600px){.grid2{grid-template-columns:1fr}.card.row{flex-direction:column;align-items:flex-start}}
.bar{background:#e5e7eb;border-radius:4px;height:10px;width:120px;display:inline-block;vertical-align:middle}
.bar i{display:block;height:10px;background:var(--primary,#2563eb);border-radius:4px}

/* WordPress-style login */
body.login{border-top:4px solid var(--header,#1d2327);min-height:100vh}
.login{width:440px;max-width:calc(100% - 32px);margin:0 auto;padding:8% 0 0}
.login-logo{margin:0 0 24px;text-align:center;font-size:24px;font-weight:600}
.login-logo a{color:#3c434a;text-decoration:none;display:inline-block}
.login-logo .logo{height:var(--logo-login-h,84px);max-width:100%;margin:0 auto}
.login-card{background:#fff;border:1px solid #c3c4c7;box-shadow:0 1px 3px rgba(0,0,0,.04);padding:26px 24px 26px}
.login-card label{display:block;font-weight:400;font-size:14px;margin:0 0 3px}
.login-card input[type=text],.login-card input[type=email],.login-card input[type=password]{padding:6px 10px;min-height:40px;font-size:20px;margin:0 0 16px;border:1px solid #8c8f94;border-radius:4px;background:#fff}
.login-card input:focus{outline:2px solid var(--primary);border-color:var(--primary)}
.login-card button{float:right;padding:0 12px;min-height:32px;font-weight:400;border-radius:3px}
.login-card::after{content:"";display:block;clear:both}
.pw-wrap{position:relative}.pw-wrap input{padding-right:44px!important}
.pw-wrap button{position:absolute;right:0;top:4px;float:none;background:none;color:var(--primary);min-height:32px;padding:0 8px;font-size:18px}
.login-msg{border-left:4px solid #d63638;background:#fff;padding:12px;margin:0 0 16px;box-shadow:0 1px 1px rgba(0,0,0,.04);font-size:13px}
.login-msg.ok{border-left-color:#00a32a}
.login-links{text-align:center;padding:0 16px;margin:8px 0 0;font-size:13px;line-height:2}
.login-links a{color:#50575e}.login-links a:hover{color:var(--primary)}
.login-links a{display:inline-block}
.login-help{font-size:13px;color:#50575e;margin:0 0 16px}
.swatch{display:flex;gap:12px;align-items:center}.swatch input[type=color]{width:56px;height:38px;padding:2px;margin:0}
button.linkbtn{background:none;color:inherit;padding:0;margin-left:16px;font-size:14px;font-weight:400;text-decoration:underline;border-radius:0}
.login-links button.linkbtn{margin:0;color:#50575e;font-size:13px}

/* Countdown for timed tests: beside the box on wide screens, a bar across the top on narrow ones */
.timer{position:fixed;top:90px;right:16px;width:130px;padding:12px;text-align:center;background:#fff;border:1px solid #e5e7eb;border-radius:8px;box-shadow:0 1px 4px rgba(0,0,0,.1);z-index:10}
.timer b{display:block;font-size:30px;font-variant-numeric:tabular-nums}
.timer.low{background:#fee2e2;border-color:#dc2626;color:#991b1b}
@media(max-width:1599px){.timer{top:0;left:0;right:0;width:auto;border-radius:0;border-width:0 0 1px;padding:6px}.timer b{display:inline;margin-left:8px;font-size:22px}}

/* Matching questions */
.match{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.match h3{text-align:center;margin:4px 0 10px}
.mbox{display:flex;align-items:center;justify-content:space-between;gap:12px;background:#f3f4f6;border:1px solid #e5e7eb;border-radius:8px;padding:12px 14px;margin-bottom:10px;min-height:56px}
.mbox select{width:76px;margin:0;flex:none}
.mbox .letter{flex:none;width:28px;height:28px;line-height:28px;text-align:center;border-radius:50%;background:var(--primary);color:var(--on-primary)}
.mbox .letter+span{flex:1}
@media(max-width:600px){.match{grid-template-columns:1fr}}

/* Footer under the box */
.sitefoot{text-align:center;font-size:13px;margin:16px auto 10px}
.sitefoot:last-child{margin-bottom:28px}
.login-links:last-child{margin-bottom:32px}
.sitefoot a{color:#1f2937;background:rgba(255,255,255,.8);padding:5px 12px;border-radius:14px;text-decoration:none}
.sitefoot a:hover{background:#fff;text-decoration:underline}

/* Student profile */
.ava{display:inline-block;width:30px;height:30px;border-radius:50%;object-fit:cover;vertical-align:middle;margin-right:8px;background:rgba(255,255,255,.25);text-align:center;line-height:30px;font-size:14px;font-weight:600}
.top nav a.me{display:inline-flex;align-items:center}
.profile-pic{width:120px;height:120px;border-radius:50%;object-fit:cover;background:#e5e7eb;display:block;margin:0 0 8px}
.bio{white-space:pre-wrap}