:root{
  --navy:#07172f;--navy-2:#0d274c;--blue:#2f6df6;--blue-2:#6f8cff;
  --cyan:#31c8ef;--green:#19a974;--red:#e5484d;--amber:#f59e0b;
  --ink:#12213a;--muted:#687793;--line:#dce5f2;--surface:#ffffff;
  --soft:#f4f7fc;--shadow:0 22px 60px rgba(21,44,84,.13);--radius:20px
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;background:var(--soft);line-height:1.55}
body::selection{background:#cfe0ff}
a{color:var(--blue);text-decoration:none}
button,input,textarea,select{font:inherit}
button,.btn{position:relative;overflow:hidden;border:0;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:12px;padding:11px 17px;font-weight:800;line-height:1.2;background:linear-gradient(135deg,var(--blue),#2456ce);color:#fff;box-shadow:0 10px 24px rgba(47,109,246,.25);transition:transform .2s,box-shadow .2s,filter .2s}
button:hover,.btn:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(47,109,246,.31);filter:saturate(1.07);color:#fff}
button:active,.btn:active{transform:translateY(0)}
button:disabled{opacity:.48;cursor:not-allowed;transform:none;box-shadow:none}
.ripple{position:absolute;border-radius:50%;background:rgba(255,255,255,.38);transform:scale(0);animation:ripple .58s linear;pointer-events:none}
@keyframes ripple{to{transform:scale(4);opacity:0}}
.btn-danger{background:linear-gradient(135deg,#ef555a,#c52e35);box-shadow:0 10px 24px rgba(229,72,77,.22)}
.btn-success{background:linear-gradient(135deg,#20b982,#13845e);box-shadow:0 10px 24px rgba(25,169,116,.22)}
.btn-secondary{background:linear-gradient(135deg,#66758e,#3f4d65);box-shadow:0 10px 24px rgba(63,77,101,.18)}
.btn-ghost{background:#eef3fb;color:#42536f;box-shadow:none;border:1px solid #dbe5f3}
.btn-ghost:hover{color:#12213a;box-shadow:0 8px 18px rgba(34,55,91,.1)}
.container{width:min(1180px,calc(100% - 32px));margin:34px auto 60px;position:relative;z-index:2}
.page-enter{animation:pageEnter .48s ease both}
@keyframes pageEnter{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}
h1,h2,h3{margin-top:0;color:#0c1d36;line-height:1.2}
h1{font-size:clamp(30px,4vw,44px);letter-spacing:-.035em}
h2{font-size:24px;letter-spacing:-.02em}
p{margin-top:0}
.muted{color:var(--muted)}
.ambient{position:fixed;z-index:0;border-radius:50%;filter:blur(10px);pointer-events:none;opacity:.35;animation:float 10s ease-in-out infinite}
.ambient-one{width:360px;height:360px;background:#c9dcff;right:-100px;top:80px}
.ambient-two{width:300px;height:300px;background:#d2f6ff;left:-120px;bottom:20px;animation-delay:-4s}
@keyframes float{50%{transform:translateY(28px) translateX(-12px) scale(1.06)}}
.card{background:rgba(255,255,255,.94);border:1px solid rgba(220,229,242,.9);border-radius:var(--radius);padding:25px;box-shadow:var(--shadow);margin-bottom:21px;backdrop-filter:blur(16px);animation:cardIn .5s ease both}
.card:nth-child(2){animation-delay:.05s}.card:nth-child(3){animation-delay:.1s}
@keyframes cardIn{from{opacity:0;transform:translateY(14px) scale(.99)}to{opacity:1;transform:none}}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:18px}
.stat-card{position:relative;overflow:hidden}
.stat-card::after{content:"";position:absolute;width:130px;height:130px;border-radius:50%;right:-45px;top:-55px;background:linear-gradient(135deg,#dce8ff,#edf7ff)}
.stat-card h2{font-size:38px;margin:0 0 4px;position:relative;z-index:1}
.stat-card p{position:relative;z-index:1;color:var(--muted);margin:0}
label{display:block;font-size:14px;font-weight:800;color:#34445f;margin:3px 0}
input,textarea,select{width:100%;border:1px solid #cfdbea;border-radius:13px;background:#fbfdff;color:var(--ink);padding:12px 14px;margin:6px 0 15px;outline:0;transition:border .2s,box-shadow .2s,background .2s}
textarea{min-height:120px;resize:vertical}
input:focus,textarea:focus,select:focus{border-color:#6f98ff;background:#fff;box-shadow:0 0 0 4px rgba(47,109,246,.12)}
.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 17px}
.form-grid .full{grid-column:1/-1}
.alert{display:flex;align-items:center;justify-content:space-between;gap:15px;padding:14px 16px;margin:0 0 18px;border-radius:14px;border:1px solid;animation:alertIn .4s ease}
.alert button{padding:0;width:28px;height:28px;background:transparent;color:inherit;box-shadow:none;font-size:23px}
.alert.ok{background:#eafaf4;border-color:#b9ead6;color:#116347}
.alert.err{background:#fff0f1;border-color:#f6c6c9;color:#9f2228}
.alert.warn{background:#fff8e8;border-color:#f9ddb0;color:#8a5200}
.alert-hide{opacity:0;transform:translateY(-10px);transition:.35s}
@keyframes alertIn{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:none}}
.badge{display:inline-flex;align-items:center;padding:5px 10px;border-radius:999px;font-size:12px;font-weight:900;letter-spacing:.02em;background:#e9eef6;color:#43536d}
.badge.success{background:#dcf8ed;color:#106444}
.badge.danger{background:#ffe7e9;color:#a32029}
.badge.warning{background:#fff2ce;color:#8a5700}
.table-wrap{overflow:auto;border:1px solid var(--line);border-radius:16px;background:#fff}
table{border-collapse:collapse;width:100%;min-width:760px}
th,td{padding:14px 15px;text-align:left;vertical-align:top;border-bottom:1px solid #e9eef6}
th{font-size:12px;text-transform:uppercase;letter-spacing:.07em;color:#65748c;background:#f8faff}
tr:last-child td{border-bottom:0}
tbody tr{transition:background .18s}
tbody tr:hover{background:#f8fbff}
.admin-body{min-height:100vh;background:linear-gradient(150deg,#f2f6fc,#f9fbfe 55%,#eef5ff)}
.admin-header{position:sticky;top:0;z-index:40;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:13px max(18px,calc((100vw - 1180px)/2));background:rgba(7,23,47,.94);backdrop-filter:blur(18px);box-shadow:0 12px 38px rgba(6,20,42,.2)}
.brand{display:flex;align-items:center;gap:11px;color:#fff}
.brand:hover{color:#fff}
.brand-mark{min-width:66px;height:42px;padding:0 13px;border-radius:13px;display:grid;place-items:center;background:linear-gradient(135deg,#0b2448 0%,#2f6df6 55%,#31c8ef 100%);border:1px solid rgba(255,255,255,.24);box-shadow:0 10px 24px rgba(49,200,239,.24),inset 0 1px 0 rgba(255,255,255,.24);font-weight:1000;font-size:15px;letter-spacing:.16em;text-indent:.16em;color:#fff;text-shadow:0 2px 8px rgba(0,0,0,.22)}
.brand span:last-child{display:flex;flex-direction:column}
.brand small{color:#9fb2ce;font-size:11px}
.admin-nav{display:flex;align-items:center;gap:5px}
.admin-nav a{color:#c9d6e9;padding:9px 11px;border-radius:10px;font-size:14px;font-weight:700;transition:.18s}
.admin-nav a:hover,.admin-nav a.active{color:#fff;background:rgba(255,255,255,.1)}
.admin-nav .logout-link{color:#ffd1d3}
.menu-toggle{display:none;background:rgba(255,255,255,.1);box-shadow:none;padding:9px 12px}
.paste-box{position:relative;border:1px dashed #79a5ff;background:linear-gradient(145deg,#eef5ff,#f7fbff);border-radius:17px;padding:18px;margin-bottom:20px}
.paste-box::before{content:"AUTO";position:absolute;right:14px;top:13px;font-size:10px;font-weight:950;letter-spacing:.12em;color:#2f6df6;background:#dce8ff;padding:5px 8px;border-radius:999px}
.paste-status{font-size:13px;font-weight:750;color:#335fbd}

/* Detail hasil ujian */
.score-correct{color:#14815f;font-size:18px}
.score-wrong{color:#c43138;font-size:18px}
.result-detail-row:hover{background:transparent}
.result-detail-row>td{padding:0 14px 16px;background:#fbfdff;border-bottom:1px solid #dfe7f2}
.answer-details{border:1px solid #dbe5f2;border-radius:15px;background:#fff;overflow:hidden}
.answer-details summary{list-style:none;display:flex;align-items:center;justify-content:space-between;gap:14px;padding:13px 16px;cursor:pointer;background:linear-gradient(180deg,#fff,#f7faff);color:#2456ce;font-weight:850;transition:background .2s}
.answer-details summary::-webkit-details-marker{display:none}
.answer-details summary::after{content:"＋";width:26px;height:26px;display:grid;place-items:center;border-radius:9px;background:#e7efff;color:#2456ce;font-size:17px;line-height:1}
.answer-details[open] summary::after{content:"−"}
.answer-details summary:hover{background:#f2f6ff}
.detail-summary-title{display:flex;align-items:center;gap:8px}
.detail-summary-title::before{content:"✓";width:24px;height:24px;display:grid;place-items:center;border-radius:8px;background:#ddf8ee;color:#117153;font-size:13px}
.detail-summary-meta{margin-left:auto;color:var(--muted);font-size:12px;font-weight:750}
.detail-empty{padding:20px;text-align:center;background:#fbfdff}
.detail-empty p{margin:4px 0 0}
.answer-number-groups{display:grid;grid-template-columns:1fr 1fr;gap:12px;padding:16px}
.answer-number-group{border:1px solid;border-radius:14px;padding:14px}
.answer-number-group>span{display:block;margin-bottom:10px;font-size:12px;font-weight:900;text-transform:uppercase;letter-spacing:.06em}
.answer-number-group.correct{background:#effbf6;border-color:#bce9d8;color:#116347}
.answer-number-group.wrong{background:#fff4f4;border-color:#f3c6c9;color:#9f2228}
.answer-number-list{display:flex;flex-wrap:wrap;gap:7px;align-items:center;min-height:32px}
.answer-number-list em{font-size:13px;color:var(--muted)}
.answer-number-chip{min-width:32px;height:32px;padding:0 8px;border-radius:10px;display:grid;place-items:center;font-size:13px}
.answer-number-chip.correct{background:#18a675;color:#fff;box-shadow:0 6px 14px rgba(24,166,117,.2)}
.answer-number-chip.wrong{background:#e5484d;color:#fff;box-shadow:0 6px 14px rgba(229,72,77,.18)}
.answer-table-wrap{overflow:auto;border-top:1px solid #e1e9f4}
.answer-table{min-width:780px}
.answer-table th{background:#f5f8fd}
.answer-table td:nth-child(1){width:66px}
.answer-table td:nth-child(2){min-width:300px;white-space:pre-wrap}
.answer-letter{display:inline-grid;place-items:center;min-width:34px;height:34px;padding:0 9px;border-radius:10px;background:#e8f0ff;color:#2456ce;font-weight:950}
.answer-letter.key{background:#eef1f6;color:#384962}

/* Login */
.login-body{min-height:100vh;display:grid;place-items:center;overflow:hidden;background:
radial-gradient(circle at 15% 20%,rgba(49,200,239,.22),transparent 28%),
radial-gradient(circle at 85% 80%,rgba(111,140,255,.28),transparent 32%),
linear-gradient(135deg,#06162e,#0b2a54)}
.login-shell{width:min(980px,calc(100% - 28px));display:grid;grid-template-columns:1.08fr .92fr;border:1px solid rgba(255,255,255,.14);border-radius:28px;overflow:hidden;background:rgba(255,255,255,.08);box-shadow:0 36px 100px rgba(0,0,0,.36);backdrop-filter:blur(18px);animation:loginIn .65s ease both}
@keyframes loginIn{from{opacity:0;transform:translateY(20px) scale(.98)}to{opacity:1;transform:none}}
.login-showcase{padding:54px;color:#fff;display:flex;flex-direction:column;justify-content:space-between;min-height:570px;background:
linear-gradient(160deg,rgba(35,91,199,.78),rgba(10,35,76,.6)),
radial-gradient(circle at 80% 15%,rgba(49,200,239,.5),transparent 30%)}
.login-showcase h1{color:#fff;font-size:52px;max-width:500px}
.login-showcase p{color:#c8daf3;max-width:520px;font-size:17px}
.feature-list{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.feature-chip{padding:12px;border:1px solid rgba(255,255,255,.16);border-radius:14px;background:rgba(255,255,255,.08);font-size:13px;color:#e9f2ff}
.login-panel{background:#fff;padding:54px;display:flex;flex-direction:column;justify-content:center}
.login-panel h2{font-size:32px;margin-bottom:8px}
.login-switch{margin-top:15px;font-size:14px}

/* Exam landing */
.exam-landing-body{min-height:100vh;background:
radial-gradient(circle at 90% 10%,#dce8ff,transparent 32%),
linear-gradient(145deg,#f3f7fd,#fbfdff)}
.participant-header{display:flex;align-items:center;justify-content:space-between;padding:17px max(18px,calc((100vw - 1080px)/2));background:rgba(255,255,255,.88);backdrop-filter:blur(15px);border-bottom:1px solid #dfe8f4}
.participant-header .brand{color:var(--ink)}
.participant-header .brand:hover{color:var(--ink)}
.participant-header .brand small{color:var(--muted)}
.exam-hero{width:min(1080px,calc(100% - 30px));margin:55px auto;display:grid;grid-template-columns:1.25fr .75fr;gap:24px}
.exam-hero-main{padding:42px;border-radius:28px;background:linear-gradient(145deg,#0b2448,#123c72);color:#fff;box-shadow:0 28px 70px rgba(11,36,72,.28);position:relative;overflow:hidden}
.exam-hero-main::after{content:"";position:absolute;width:280px;height:280px;border-radius:50%;right:-90px;bottom:-130px;background:linear-gradient(135deg,#467aff,#35c4e7);opacity:.55}
.exam-hero-main h1{color:#fff;max-width:720px}
.exam-hero-main p{color:#c8d8ed;max-width:680px}
.exam-info{display:grid;gap:14px}
.info-card{background:#fff;border:1px solid #dce5f2;border-radius:20px;padding:21px;box-shadow:0 15px 38px rgba(33,62,105,.1);animation:cardIn .5s ease both}
.info-card strong{display:block;font-size:20px}
.info-label{font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);font-weight:850}


/* Nilai peserta setelah ujian selesai */
.participant-result-card{position:relative;z-index:2;display:grid;grid-template-columns:150px 1fr;gap:22px;align-items:center;margin-top:24px;padding:20px;border:1px solid rgba(255,255,255,.18);border-radius:22px;background:rgba(255,255,255,.11);backdrop-filter:blur(10px);box-shadow:0 18px 42px rgba(0,0,0,.12)}
.participant-result-card[data-new-result="1"]{animation:resultReveal .6s ease both}
@keyframes resultReveal{from{opacity:0;transform:translateY(12px) scale(.98)}to{opacity:1;transform:none}}
.result-score-ring{width:138px;height:138px;border-radius:50%;display:flex;flex-direction:column;align-items:center;justify-content:center;background:#fff;color:#0b2448;box-shadow:0 16px 34px rgba(0,0,0,.2),inset 0 0 0 9px #e8f2ff}
.result-score-ring span{font-size:12px;font-weight:850;text-transform:uppercase;letter-spacing:.07em;color:#6a7890}
.result-score-ring strong{font-size:48px;line-height:1;font-weight:1000;color:#1a66e8;margin:5px 0 1px}
.result-score-ring small{font-size:12px;font-weight:800;color:#6a7890}
.result-summary h2{color:#fff;font-size:25px;margin:8px 0 5px}
.result-summary p{color:#d4e2f4;margin-bottom:14px}
.result-complete-badge{display:inline-flex;align-items:center;padding:6px 10px;border-radius:999px;background:#dff8ee;color:#0f6a4c;font-size:12px;font-weight:900}
.result-mini-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:9px}
.result-mini-stats div{padding:10px 12px;border-radius:13px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.13)}
.result-mini-stats strong{display:block;color:#fff;font-size:21px}
.result-mini-stats span{font-size:11px;color:#c9d8eb;text-transform:uppercase;letter-spacing:.05em;font-weight:800}

/* Exam page */
.exam-body{min-height:100vh;background:linear-gradient(145deg,#edf3fb,#f9fbff)}
.exam-topbar{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.93);border-bottom:1px solid #dce5f1;backdrop-filter:blur(18px);box-shadow:0 10px 34px rgba(20,42,77,.08)}
.exam-topbar-inner{width:min(1380px,calc(100% - 28px));margin:auto;padding:12px 0;display:flex;align-items:center;justify-content:space-between;gap:16px}
.exam-brand{display:flex;align-items:center;gap:12px}
.exam-logo{min-width:68px;height:44px;padding:0 13px;border-radius:14px;display:grid;place-items:center;background:linear-gradient(135deg,#0b2448 0%,#316ff5 55%,#38c5e9 100%);border:1px solid rgba(255,255,255,.35);color:#fff;font-weight:1000;font-size:15px;letter-spacing:.16em;text-indent:.16em;text-shadow:0 2px 8px rgba(0,0,0,.22);box-shadow:0 10px 24px rgba(47,109,246,.28),inset 0 1px 0 rgba(255,255,255,.22)}
.exam-brand h1{font-size:17px;margin:0}
.exam-brand small{color:var(--muted)}
.timer-card{display:flex;align-items:center;gap:10px;min-width:154px;padding:9px 13px;border-radius:14px;background:#fff6e5;border:1px solid #ffd9a2;color:#8a4b00}
.timer-card.urgent{background:#fff0f1;border-color:#f4bdc0;color:#a22128;animation:timerPulse 1s infinite}
@keyframes timerPulse{50%{transform:scale(1.025);box-shadow:0 0 0 7px rgba(229,72,77,.08)}}
.timer-card strong{font-size:22px;font-variant-numeric:tabular-nums}
.exam-shell{width:min(1380px,calc(100% - 28px));margin:22px auto 50px;display:grid;grid-template-columns:290px minmax(0,1fr);gap:20px}
.exam-sidebar{position:sticky;top:90px;align-self:start}
.exam-user{display:flex;align-items:center;gap:12px}
.avatar{width:46px;height:46px;border-radius:15px;display:grid;place-items:center;background:linear-gradient(135deg,#dce8ff,#dff8ff);color:#2456ce;font-weight:950;font-size:18px}
.progress-head{display:flex;justify-content:space-between;align-items:center;margin-top:20px}
.progress-track{height:10px;border-radius:999px;overflow:hidden;background:#e6edf7;margin-top:9px}
.progress-fill{height:100%;width:0;background:linear-gradient(90deg,#2f6df6,#31c8ef);transition:width .3s ease}
.question-nav{display:grid;grid-template-columns:repeat(5,1fr);gap:8px;margin-top:18px}
.question-nav button{width:100%;padding:9px 4px;border:1px solid #d5e0ee;background:#f8faff;color:#63728a;box-shadow:none;border-radius:10px}
.question-nav button:hover{transform:translateY(-1px);box-shadow:0 5px 12px rgba(37,75,130,.1)}
.question-nav button.active{background:#2f6df6;border-color:#2f6df6;color:#fff}
.question-nav button.answered{background:#ddf8ee;border-color:#9ce0c6;color:#126747}
.question-nav button.active.answered{background:#14926a;border-color:#14926a;color:#fff}
.legend{display:grid;gap:8px;margin-top:18px;font-size:12px;color:var(--muted)}
.legend span{display:flex;align-items:center;gap:8px}
.legend i{width:12px;height:12px;border-radius:4px;background:#f8faff;border:1px solid #d5e0ee}
.legend .done i{background:#ddf8ee;border-color:#9ce0c6}
.exam-main-card{background:#fff;border:1px solid #dce5f1;border-radius:24px;box-shadow:0 25px 65px rgba(25,50,89,.12);overflow:hidden;animation:cardIn .5s ease both}
.exam-card-header{padding:19px 24px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid #e4ebf5;background:linear-gradient(180deg,#fff,#fbfdff)}
.question-label{font-weight:950;color:#2f6df6}
.question-count{font-size:13px;color:var(--muted)}
.question-slide{display:none;padding:30px;animation:slideQuestion .3s ease}
.question-slide.active{display:block}
@keyframes slideQuestion{from{opacity:0;transform:translateX(10px)}to{opacity:1;transform:none}}
.question-text{font-size:20px;font-weight:790;line-height:1.62;color:#13233e;white-space:pre-wrap;margin-bottom:24px}
.question-image{max-width:100%;max-height:430px;border:1px solid #dce5f2;border-radius:16px;margin:0 0 22px}
.option-card{position:relative;display:grid;grid-template-columns:38px 1fr;align-items:center;gap:13px;padding:15px 17px;margin:11px 0;border:1px solid #d7e1ee;border-radius:15px;background:#fff;cursor:pointer;transition:transform .18s,border .18s,background .18s,box-shadow .18s}
.option-card:hover{transform:translateX(4px);border-color:#8db0ff;background:#f9fbff;box-shadow:0 9px 22px rgba(47,109,246,.08)}
.option-card input{position:absolute;opacity:0;pointer-events:none}
.option-letter{width:36px;height:36px;border-radius:11px;display:grid;place-items:center;background:#edf2f8;color:#475873;font-weight:950;transition:.18s}
.option-card.selected{border-color:#3d79f5;background:linear-gradient(145deg,#eef5ff,#f7fbff);box-shadow:0 0 0 4px rgba(47,109,246,.09)}
.option-card.selected .option-letter{background:#2f6df6;color:#fff;transform:scale(1.05)}
.exam-actions{display:flex;align-items:center;justify-content:space-between;gap:13px;padding:18px 23px;border-top:1px solid #e4ebf5;background:#fbfdff}
.exam-actions-right{display:flex;gap:10px}
.finish-btn{background:linear-gradient(135deg,#1eb17c,#12805b);box-shadow:0 10px 24px rgba(25,169,116,.23)}
.exam-note{font-size:12px;color:var(--muted);margin-top:15px}

/* Modal */
.modal-layer{position:fixed;inset:0;z-index:999;display:flex;align-items:center;justify-content:center;padding:20px;background:rgba(5,18,38,.58);backdrop-filter:blur(8px);opacity:0;visibility:hidden;transition:.25s}
.modal-layer.show{opacity:1;visibility:visible}
.modal-card{width:min(460px,100%);background:#fff;border:1px solid rgba(255,255,255,.7);border-radius:24px;padding:30px;box-shadow:0 35px 100px rgba(0,0,0,.3);text-align:center;transform:translateY(18px) scale(.96);transition:.3s}
.modal-layer.show .modal-card{transform:none}
.modal-icon{width:65px;height:65px;border-radius:21px;margin:0 auto 17px;display:grid;place-items:center;font-size:30px;font-weight:950;background:#e9f1ff;color:#2f6df6}
.modal-icon.danger{background:#ffe9ea;color:#d63138}
.modal-icon.success{background:#ddf8ee;color:#13835e}
.modal-card h3{font-size:25px;margin-bottom:9px}
.modal-card p{color:var(--muted);margin-bottom:22px}
.modal-stats{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:18px 0}
.modal-stat{padding:12px;border-radius:14px;background:#f4f7fb}
.modal-stat strong{display:block;font-size:24px}
.modal-actions{display:flex;justify-content:center;gap:10px}
.submitting-overlay{position:fixed;inset:0;z-index:1100;display:none;place-items:center;background:rgba(5,18,38,.72);color:#fff;text-align:center;backdrop-filter:blur(8px)}
.submitting-overlay.show{display:grid}
.loader{width:52px;height:52px;margin:0 auto 15px;border:5px solid rgba(255,255,255,.25);border-top-color:#fff;border-radius:50%;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

@media(max-width:920px){
  .admin-nav{position:absolute;left:16px;right:16px;top:70px;display:none;flex-direction:column;align-items:stretch;padding:12px;border-radius:16px;background:#0b2448;box-shadow:0 20px 50px rgba(0,0,0,.28)}
  .admin-nav.open{display:flex;animation:menuIn .2s ease}
  @keyframes menuIn{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:none}}
  .menu-toggle{display:inline-flex}
  .exam-shell{grid-template-columns:1fr}
  .exam-sidebar{position:static}
  .question-nav{grid-template-columns:repeat(8,1fr)}
  .exam-hero{grid-template-columns:1fr}
}
@media(max-width:760px){
  .participant-result-card{grid-template-columns:1fr;text-align:center}.result-score-ring{margin:auto}.result-mini-stats{text-align:left}

  .answer-number-groups{grid-template-columns:1fr}
  .detail-summary-meta{display:none}

  .container{width:min(100% - 22px,1180px);margin-top:20px}
  .card{padding:19px;border-radius:17px}
  .form-grid{grid-template-columns:1fr}.form-grid .full{grid-column:auto}
  .login-shell{grid-template-columns:1fr}.login-showcase{display:none}.login-panel{padding:34px 24px;min-height:560px}
  .exam-hero{margin-top:25px}.exam-hero-main{padding:28px;border-radius:22px}
  .exam-topbar-inner{align-items:flex-start}.exam-brand small{display:none}.timer-card{min-width:auto}
  .exam-shell{width:calc(100% - 18px);margin-top:10px}
  .question-nav{grid-template-columns:repeat(5,1fr)}
  .question-slide{padding:20px}.question-text{font-size:18px}
  .exam-actions{flex-wrap:wrap;padding:14px}.exam-actions-right{width:100%}.exam-actions-right button{flex:1}
  .modal-actions{flex-direction:column-reverse}.modal-actions button{width:100%}
}

/* Vercel + Firebase edition */
[hidden]{display:none!important}.loading-state{padding:28px;text-align:center;color:var(--muted,#65758b)}
.inline-actions{display:flex;gap:8px;flex-wrap:wrap}.flash-slot:empty{display:none}.field-help{font-size:12px;color:#6b7b91;margin-top:6px}
.admin-user-chip{display:flex;align-items:center;gap:10px}.admin-user-chip .avatar{width:36px;height:36px}
.empty-state{padding:28px;text-align:center}.score-big{font-size:26px;font-weight:800}.result-score{font-weight:800;font-size:18px}
.setup-note{background:#fff8e8;border:1px solid #f2d18a;border-radius:14px;padding:14px 16px;margin:16px 0;color:#6c4b00}
.code-note{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;background:#f6f8fb;border:1px solid #e2e8f0;border-radius:10px;padding:10px 12px;overflow:auto}
.question-image-preview{max-width:220px;max-height:160px;object-fit:contain;border-radius:12px;border:1px solid #e2e8f0;margin-top:8px}
.status-dot{display:inline-block;width:8px;height:8px;border-radius:999px;background:#16a36a;margin-right:6px}.status-dot.off{background:#d84a4a}
.toast{position:fixed;right:20px;bottom:20px;z-index:9999;min-width:260px;max-width:420px;padding:14px 16px;border-radius:14px;background:#0d1b2f;color:white;box-shadow:0 18px 45px rgba(0,0,0,.24);animation:fadeUp .2s ease}.toast.err{background:#7b1e25}.toast.ok{background:#0d6b4d}
@keyframes fadeUp{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}