:root{font-family:"Gowun Dodum",sans-serif;color:#24304a;background:#f6f7fb;line-height:1.55;--ink:#24304a;--muted:#6e7890;--primary:#5b67d9;--primary-dark:#404bad;--surface:#fff;--line:#e1e5ef;--shadow:0 12px 34px rgba(42,55,90,.10)}*{box-sizing:border-box}html{background:#f6f7fb}body{margin:0;min-height:100vh;background:linear-gradient(180deg,#f8f9fd,#f3f5fa);transition:background .25s ease}body[data-theme="create"]{--primary:#8a5bd5;--primary-dark:#6e43b7;--line:#e6daf7;background:radial-gradient(circle at 8% 4%,#ffe9f6 0,transparent 28%),radial-gradient(circle at 94% 10%,#e6ddff 0,transparent 30%),linear-gradient(180deg,#fff8fd,#f8f1ff)}body[data-theme="quiz"]{--primary:#168ca3;--primary-dark:#0d6d82;--line:#ccebee;background:radial-gradient(circle at 8% 4%,#fff3b9 0,transparent 27%),radial-gradient(circle at 94% 8%,#c8f5ed 0,transparent 31%),linear-gradient(180deg,#f3fffd,#eefbff)}body[data-theme="teacher"]{--primary:#31598f;--primary-dark:#25456f;--line:#d4deec;background:radial-gradient(circle at 12% 3%,#dceaff 0,transparent 28%),radial-gradient(circle at 95% 10%,#f3dff4 0,transparent 29%),linear-gradient(180deg,#edf4ff,#f6f2fb)}body[data-theme="home"]{background:radial-gradient(circle at 12% 3%,#fce4f3 0,transparent 27%),radial-gradient(circle at 90% 8%,#dff5ee 0,transparent 30%),linear-gradient(180deg,#f9f6ff,#f2f8ff)}.topbar{height:68px;background:rgba(255,255,255,.88);backdrop-filter:blur(14px);border-bottom:1px solid rgba(210,216,229,.78);display:flex;align-items:center;justify-content:space-between;padding:0 max(18px,calc((100vw - 1100px)/2));position:sticky;top:0;z-index:20}.brand{font-weight:900;color:var(--ink);text-decoration:none;font-size:19px;letter-spacing:-.3px}.shell{max-width:1100px;margin:0 auto;padding:30px 18px 70px}.hero{background:rgba(255,255,255,.88);border:1px solid rgba(225,229,239,.9);border-radius:30px;padding:42px;box-shadow:var(--shadow)}.hero h1{font-size:clamp(30px,5vw,50px);line-height:1.13;margin:8px 0 14px;letter-spacing:-1.2px}.hero p{color:var(--muted);margin:0;max-width:720px}.home-hero{background:linear-gradient(135deg,rgba(255,255,255,.96),rgba(245,239,255,.9))}.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:20px}.card{background:rgba(255,255,255,.94);border:1px solid var(--line);border-radius:22px;padding:23px;box-shadow:0 8px 26px rgba(36,48,74,.07)}.card h2,.card h3{margin-top:0}.action-card{text-decoration:none;color:inherit;display:block;transition:transform .16s,box-shadow .16s,border-color .16s}.action-card:hover{transform:translateY(-3px);box-shadow:0 15px 34px rgba(36,48,74,.12)}.create-entry{background:linear-gradient(135deg,#fff7fc,#f3e8ff);border-color:#e6c8f4}.quiz-entry{background:linear-gradient(135deg,#f7fffd,#e5f8fb);border-color:#bfe9e8}.entry-emoji{font-size:42px;margin-bottom:8px}.muted{color:var(--muted)}.small{font-size:13px}.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.between{justify-content:space-between}.stack{display:grid;gap:14px}.btn{border:0;border-radius:13px;padding:12px 17px;font-size:15px;font-weight:800;cursor:pointer;background:var(--primary);color:#fff;box-shadow:0 5px 14px color-mix(in srgb,var(--primary) 18%,transparent);transition:transform .12s,opacity .12s,filter .12s}.btn:hover:not(:disabled){transform:translateY(-1px);filter:saturate(1.06)}.btn.secondary{background:#eef1f7;color:#344058;box-shadow:none}.btn.good{background:#28966b}.btn.bad{background:#cf5e69}.btn.warn{background:#d39536}.btn.ghost{background:rgba(255,255,255,.7);color:#526079;border:1px solid #dbe1eb;box-shadow:none}.btn:disabled{opacity:.42;cursor:not-allowed;transform:none}.btn.big{font-size:18px;padding:16px 24px}.field{display:grid;gap:7px}.field label{font-weight:800;font-size:14px}.field input,.field textarea,.field select{width:100%;border:1.5px solid #d9dfeb;border-radius:13px;padding:12px 13px;font:inherit;background:#fff;color:var(--ink);outline:none;transition:border-color .12s,box-shadow .12s}.field input:focus,.field textarea:focus,.field select:focus{border-color:var(--primary);box-shadow:0 0 0 4px color-mix(in srgb,var(--primary) 12%,transparent)}.field textarea{min-height:110px;resize:vertical}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.tabs{display:flex;gap:8px;overflow:auto;padding:4px 0 14px}.tab{white-space:nowrap;border:1px solid #d7dfeb;background:rgba(255,255,255,.9);border-radius:999px;padding:10px 16px;font-weight:800;cursor:pointer}.tab.active{background:var(--primary);color:#fff;border-color:var(--primary)}.badge{display:inline-flex;align-items:center;border-radius:999px;padding:6px 10px;font-size:12px;font-weight:900;background:#eef1f6}.badge.pending{background:#fff0b9;color:#765800}.badge.approved{background:#d9f5e7;color:#176d4e}.badge.rejected{background:#ffe0e4;color:#9c3443}.statusbar{display:flex;gap:10px;flex-wrap:wrap;margin:16px 0}.pill{background:rgba(255,255,255,.92);border:1px solid #dde3ed;border-radius:999px;padding:8px 12px}.page-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:18px}.page-heading h1{margin:4px 0}.page-kicker{display:inline-block;font-weight:900;color:var(--primary);font-size:14px}.notice-card{background:linear-gradient(135deg,#fff9df,#fff)}.create-form-card{background:linear-gradient(180deg,rgba(255,255,255,.97),#fff9fd)}.mini-label{display:inline-block;background:#eddcff;color:#7042a8;border-radius:999px;padding:4px 8px;font-size:11px;font-weight:900}.form-emoji{font-size:38px}.answer-choice{display:grid;grid-template-columns:1fr 1fr;gap:12px}.answer-pill{display:flex;align-items:center;justify-content:center;gap:8px;border:2px solid #e1d5ee;background:#fff;border-radius:16px;padding:14px;cursor:pointer;font-size:20px}.answer-pill:has(input:checked){border-color:var(--primary);background:#f6edff;box-shadow:0 0 0 4px rgba(138,91,213,.10)}.submit-warning{background:#fff0f5;border:1px solid #f5c8da;color:#8f4664;padding:11px 13px;border-radius:13px;font-weight:800}.preview-box{background:#faf7ff;border-radius:16px;padding:16px;border:1px solid #eadff6}.confirm-icon{text-align:center;font-size:42px}.my-question{border-left:5px solid #c79bea}.teacher-praise{background:#fff8d9;border-radius:12px;padding:9px 11px}.quiz-card{max-width:780px;margin:0 auto}.quiz-start{text-align:left;background:linear-gradient(145deg,rgba(255,255,255,.98),#effcf8)}.quiz-start-icon,.result-emoji{font-size:52px;text-align:center}.quiz-guide{background:linear-gradient(135deg,#fff9cf,#edfffa);border:1px solid #dceac9;border-radius:18px;padding:17px 18px}.quiz-guide p{margin:8px 0}.active-quiz{background:rgba(255,255,255,.97);border:2px solid #c9ece7}.quiz-top{display:flex;justify-content:space-between;align-items:flex-start;gap:14px}.quiz-step{font-size:22px;font-weight:950}.author-chip{display:inline-flex;margin-top:5px;background:#eaf7f5;color:#356767;border-radius:999px;padding:6px 10px;font-size:13px;font-weight:800}.score-box{text-align:right;background:#fff8d9;border:1px solid #f3df8b;border-radius:16px;padding:9px 13px;min-width:120px}.score-box span{display:block;font-size:11px;color:#837143;font-weight:800}.score-box strong{font-size:23px;display:block;line-height:1.2}.score-box b{font-size:13px;color:#7d672d}.progress{height:12px;background:#e5eef0;border-radius:999px;overflow:hidden;margin:15px 0}.progress>div{height:100%;background:linear-gradient(90deg,#55c7b5,#32a7c3);transition:width .2s}.pre-stats{display:flex;gap:9px;flex-wrap:wrap;margin:13px 0}.pre-stats span{background:#f0faf8;border:1px solid #cfece7;border-radius:999px;padding:8px 12px;font-size:14px}.quiz-question{font-size:clamp(23px,4.2vw,34px);line-height:1.4;margin:26px 0 14px;letter-spacing:-.5px}.instant-note{background:#fff5c8;border:1px solid #efd56f;color:#6f5c18;border-radius:14px;padding:11px 13px;font-weight:850;text-align:center}.ox{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:20px 0 4px}.ox button{min-height:145px;border-radius:28px;border:3px solid #dbe9e9;background:#fff;font-weight:950;cursor:pointer;display:grid;place-content:center;gap:2px;transition:transform .12s,border-color .12s,background .12s}.ox button span{font-size:62px;line-height:1}.ox button small{font-size:13px;color:#718080}.ox button:first-child{border-color:#a8ded0;background:#effcf7}.ox button:last-child{border-color:#b7d9ef;background:#f1f8ff}.ox button:hover:not(:disabled){transform:translateY(-3px)}.ox button.answering{transform:scale(.98);filter:saturate(1.2)}.feedback{border-radius:18px;padding:17px;margin:16px 0;display:flex;gap:12px;align-items:center}.feedback h2{margin:0 0 4px}.feedback p{margin:0}.feedback.correct{background:#e0f8e9;border:1px solid #bce8cc}.feedback.wrong{background:#ffe8ec;border:1px solid #f3c3ca}.feedback-emoji{font-size:37px}.explanation-card{border-radius:18px;padding:19px;margin:13px 0;background:#f6fbff;border:1px solid #d9eafa}.rating-callout{margin-top:22px;border:2px solid #ffd365;background:linear-gradient(145deg,#fffbe0,#fff3c9);border-radius:22px;padding:19px;text-align:center;box-shadow:0 10px 22px rgba(200,157,43,.10)}.rating-callout h3{font-size:22px;margin:0 0 4px}.rating-callout p{margin:0 0 14px;color:#685825}.rating-arrow{font-size:28px;line-height:1;margin-bottom:3px;animation:bob 1.15s ease-in-out infinite alternate}@keyframes bob{from{transform:translateY(-2px)}to{transform:translateY(4px)}}.rating{display:grid;grid-template-columns:1fr 1fr;gap:12px}.rating-btn{border:2px solid transparent;border-radius:18px;padding:15px;background:#fff;font-size:28px;cursor:pointer;font-weight:900;display:grid;gap:2px}.rating-btn span{font-size:15px}.rating-btn.up{border-color:#b6e0c9}.rating-btn.down{border-color:#e4d3d6}.rating-btn.selected{outline:4px solid rgba(54,111,94,.18);border-color:#4fa884;background:#effbf4}.rating-btn.down.selected{outline-color:rgba(180,86,96,.16);border-color:#d6838c;background:#fff2f4}.rating-saved{margin-top:9px;color:#76652e;font-weight:800}.next-btn{width:100%;margin-top:15px;min-height:56px}.metric{font-size:28px;font-weight:950}.score{font-size:58px;font-weight:950;line-height:1}.result-card{background:linear-gradient(180deg,#fff,#f3fffb)}.stopped-card{text-align:center}.teacher-head{display:grid;grid-template-columns:1fr auto;gap:16px;align-items:start;background:rgba(255,255,255,.48);border-radius:22px;padding:4px}.switches{display:flex;gap:10px;flex-wrap:wrap}.switch{border:1px solid #cdd9e9;background:#fff;border-radius:14px;padding:10px 13px;display:flex;gap:8px;align-items:center;font-weight:800}.switch input{width:20px;height:20px}.question-list,.student-list,.session-list{display:grid;gap:12px}.question-card{background:rgba(255,255,255,.94);border:1px solid var(--line);border-radius:18px;padding:18px;box-shadow:0 5px 16px rgba(40,58,90,.05)}.question-text{font-size:18px;font-weight:850;margin:8px 0}.meta{font-size:13px;color:#737d90;display:flex;gap:10px;flex-wrap:wrap}.preset-wrap{display:flex;gap:7px;flex-wrap:wrap}.preset{border:1px solid #d9dfe8;background:#fff;border-radius:999px;padding:7px 10px;cursor:pointer;font-size:13px}.preset.selected{background:var(--primary);color:#fff;border-color:var(--primary)}.student-card{border-left:5px solid #88a9d5}.student-approved{display:inline-block;margin-top:7px;background:#e5f7ea;color:#2b7050;border-radius:999px;padding:5px 10px;font-size:13px}.divider{height:1px;background:#e7eaf0;margin:18px 0}.empty{text-align:center;color:#7c8597;padding:42px 12px;background:rgba(255,255,255,.8);border:1px dashed #cfd8e6;border-radius:18px}.modal-backdrop{position:fixed;inset:0;background:rgba(18,25,38,.48);display:grid;place-items:center;padding:18px;z-index:50;backdrop-filter:blur(4px)}.modal{background:#fff;border-radius:23px;padding:24px;width:min(540px,100%);max-height:90vh;overflow:auto;box-shadow:0 24px 65px rgba(0,0,0,.22)}.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:#26344f;color:#fff;padding:11px 16px;border-radius:999px;z-index:80;box-shadow:0 8px 30px rgba(0,0,0,.16);font-weight:800;max-width:calc(100vw - 30px);text-align:center}table{width:100%;border-collapse:collapse;background:#fff;border-radius:16px;overflow:hidden}th,td{text-align:left;padding:11px;border-bottom:1px solid #edf0f5;font-size:14px}.danger-zone{border:1px solid #f0caca;background:#fff8f8}.review-item{border-top:1px solid #eceff4;padding:15px 0}.review-item:first-child{border-top:0}.login-card{max-width:540px;margin:38px auto}.auth-card{text-align:left}.auth-icon{text-align:center;font-size:48px}.auth-divider{display:flex;align-items:center;gap:10px;color:#8a93a5;font-size:12px;font-weight:800}.auth-divider:before,.auth-divider:after{content:"";height:1px;background:#e2e6ee;flex:1}
@media(max-width:720px){.shell{padding:18px 12px 48px}.hero{padding:27px 21px;border-radius:23px}.grid,.form-grid{grid-template-columns:1fr}.teacher-head{grid-template-columns:1fr}.card{padding:17px}.topbar{padding:0 14px;height:62px}.score{font-size:46px}.rating{grid-template-columns:1fr 1fr}.btn{padding:11px 14px}.page-heading{align-items:stretch;flex-direction:column}.page-heading>a{align-self:flex-start}.quiz-top{align-items:center}.quiz-step{font-size:19px}.score-box{min-width:108px}.ox button{min-height:120px;border-radius:22px}.ox button span{font-size:54px}.quiz-question{margin-top:21px}.pre-stats{gap:7px}.pre-stats span{font-size:13px}.rating-callout{padding:16px 13px}.rating-btn{padding:13px}.topbar .small{display:none}}

/* 2026-08 colorful classroom revamp */
:root{--shadow:0 10px 24px rgba(35,42,70,.14)}
body[data-theme="teacher"]{--primary:#d9364b;--primary-dark:#a91f35;--line:#f0a0ad;background:radial-gradient(circle at 8% 2%,#ffd0d8 0,transparent 28%),radial-gradient(circle at 94% 8%,#ff8fa1 0,transparent 32%),linear-gradient(135deg,#fff1f3 0%,#ffdfe5 48%,#ffc7d1 100%)}
body[data-theme="create"]{--primary:#35a853;--primary-dark:#19763a;--line:#8edb73;background:radial-gradient(circle at 4% 3%,#d8ff63 0,transparent 27%),radial-gradient(circle at 94% 8%,#fff06a 0,transparent 32%),linear-gradient(135deg,#edffd7 0%,#bff66f 45%,#fff27c 100%)}
body[data-theme="quiz"]{--primary:#eb4f93;--primary-dark:#be286b;--line:#f39abc;background:radial-gradient(circle at 6% 2%,#ffb3d2 0,transparent 29%),radial-gradient(circle at 96% 9%,#ff7caf 0,transparent 31%),linear-gradient(135deg,#fff0f6 0%,#ffd0e3 47%,#ffb1d1 100%)}
body[data-theme="home"]{background:radial-gradient(circle at 8% 4%,#fff084 0,transparent 24%),radial-gradient(circle at 90% 7%,#8de9ff 0,transparent 28%),radial-gradient(circle at 48% 70%,#ffb3de 0,transparent 30%),linear-gradient(135deg,#f4ffd9,#e7f6ff 48%,#fff0fa)}
.topbar{border-bottom:2px solid color-mix(in srgb,var(--primary) 38%,#d7dce7);box-shadow:0 3px 14px rgba(40,45,70,.08)}
.brand:before{content:"📚 ";}.card,.hero,.question-card,.modal,.empty{border-width:2px;box-shadow:var(--shadow)}
.btn{border:2px solid color-mix(in srgb,var(--primary-dark) 52%,transparent);box-shadow:0 5px 0 color-mix(in srgb,var(--primary-dark) 35%,transparent),0 9px 18px color-mix(in srgb,var(--primary) 18%,transparent)}
.btn:active:not(:disabled){transform:translateY(3px);box-shadow:0 2px 0 color-mix(in srgb,var(--primary-dark) 35%,transparent)}
.btn.secondary{border:2px solid #9ca8bb;background:#fff;color:#344058;box-shadow:0 4px 0 #d4dae4}.btn.ghost{border:2px solid #aab4c5;background:rgba(255,255,255,.86);box-shadow:none}.btn.good{border-color:#16704c;background:#2ba56f}.btn.bad{border-color:#9f2939;background:#e34f61}
.field input,.field textarea,.field select{border:2.5px solid color-mix(in srgb,var(--primary) 55%,#9ca6b8);border-radius:14px;box-shadow:inset 0 1px 0 rgba(255,255,255,.7)}
.field label{font-size:15px}.tabs{gap:9px}.tab{border:2px solid color-mix(in srgb,var(--primary) 45%,#c9cfda);box-shadow:0 3px 0 rgba(80,80,100,.08)}.tab b{display:inline-grid;place-items:center;min-width:25px;height:25px;padding:0 7px;margin-left:5px;border-radius:999px;background:#fff;color:var(--primary);font-size:12px}.tab.active b{background:#fff;color:var(--primary-dark)}
body[data-theme="create"] .create-heading{background:linear-gradient(100deg,rgba(38,166,76,.18),rgba(218,255,89,.34),rgba(255,235,74,.38));border:2px solid #70c95d;border-radius:22px;padding:18px;box-shadow:0 7px 0 rgba(59,130,57,.12)}
body[data-theme="create"] .create-form-card{background:linear-gradient(160deg,#ffffff,#f4ffe4 64%,#fffbd0);border:3px solid #62c754}.mini-label{background:#d9ff63;color:#267232;border:2px solid #57b444}.submit-warning{border:2px solid #e9b43b;background:#fff8c9}.my-question{border-left:7px solid #57bd48}
.answer-choice{gap:14px}.answer-pill{min-height:78px;border-width:3px;border-radius:18px;font-size:29px;font-weight:950;box-shadow:0 5px 0 rgba(0,0,0,.09)}.answer-pill input{position:absolute;opacity:0;pointer-events:none}.answer-pill.answer-o{border-color:#2e73df;background:linear-gradient(145deg,#f7fbff,#cfe4ff);color:#1358bd}.answer-pill.answer-x{border-color:#e24a58;background:linear-gradient(145deg,#fff9f9,#ffd4d8);color:#bd2637}.answer-pill.answer-o:has(input:checked){border-color:#124ea8;background:#79b5ff;color:#082f73;box-shadow:0 0 0 5px rgba(39,113,224,.18),0 6px 0 #326dbb}.answer-pill.answer-x:has(input:checked){border-color:#a61f31;background:#ff8f9a;color:#76101d;box-shadow:0 0 0 5px rgba(226,65,83,.18),0 6px 0 #bd3443}
body[data-theme="quiz"] .quiz-start,body[data-theme="quiz"] .active-quiz,body[data-theme="quiz"] .result-card{background:linear-gradient(155deg,#fff,#fff1f7 72%,#ffe0eb);border:3px solid #ef78a8}.quiz-guide{border:2px solid #f3a9c4;background:linear-gradient(135deg,#fff7c9,#ffe4f0)}.active-quiz{box-shadow:0 12px 28px rgba(185,40,101,.17)}.author-chip{background:#ffe1ed;color:#9c2d5e;border:2px solid #f4a5c4}.score-box{border:2px solid #ecbb45;background:#fff3a8}.pre-stats span{border:2px solid #ef9fbd;background:#fff0f6}.instant-note{border:2px solid #efc34d;background:#fff4a9}.progress{height:14px;border:2px solid #e98db2;background:#ffe6f0}.progress>div{background:linear-gradient(90deg,#ff5aa0,#ff91be,#ffd65c)}
.ox button{border-width:4px;box-shadow:0 7px 0 rgba(0,0,0,.12),0 13px 24px rgba(40,40,70,.10)}.ox button span{font-size:68px}.ox .ox-o{border-color:#2369d8;background:linear-gradient(145deg,#f8fbff,#9dccff);color:#0f4ca8}.ox .ox-x{border-color:#d73549;background:linear-gradient(145deg,#fff8f9,#ff9aa5);color:#a7192d}.ox button:hover:not(:disabled){transform:translateY(-4px)}.ox button:active:not(:disabled){transform:translateY(3px);box-shadow:0 2px 0 rgba(0,0,0,.16)}
.rating-callout{border:3px solid #efad30;background:linear-gradient(145deg,#fffbd4,#ffe59b);box-shadow:0 7px 0 rgba(195,132,29,.15),0 12px 25px rgba(170,110,20,.13)}.rating-btn{border-width:3px;box-shadow:0 4px 0 rgba(0,0,0,.08)}.rating-btn.up{border-color:#45a66c;background:#edfff3}.rating-btn.down{border-color:#e06b78;background:#fff0f2}.explanation-card{border:2px solid #8ac7ef;background:#edf8ff}.feedback.correct{border:2px solid #55b877}.feedback.wrong{border:2px solid #e47782}
.result-card{padding:20px}.result-summary{display:flex;align-items:center;justify-content:center;gap:24px;text-align:center;padding:8px 8px 14px;background:linear-gradient(135deg,#fff5c5,#ffe3ef);border:2px solid #ed9ebc;border-radius:20px}.result-summary .result-emoji{font-size:44px}.result-summary .score{font-size:48px}.result-summary .metric{font-size:24px;margin-top:2px}
body[data-theme="teacher"] .shell{max-width:1280px}.teacher-session-banner{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:20px;align-items:center;background:linear-gradient(120deg,#7f1025 0%,#c92b44 44%,#f06273 100%);color:#fff;border:3px solid #771125;border-radius:22px;padding:18px 20px;box-shadow:0 8px 0 rgba(109,18,35,.18),0 16px 28px rgba(116,17,38,.18);margin-bottom:14px}.teacher-kicker{font-size:11px;font-weight:950;letter-spacing:1.5px;opacity:.85}.teacher-session-row{display:flex;align-items:center;gap:12px}.teacher-session-row .session-icon{font-size:32px}.teacher-session-row h1{margin:0;font-size:clamp(24px,3vw,34px);line-height:1.15}.teacher-session-row p{margin:4px 0 0;color:#ffe7ec}.control-buttons{display:flex;gap:10px}.control-btn{min-width:170px;border:3px solid rgba(255,255,255,.9);border-radius:16px;padding:10px 13px;cursor:pointer;text-align:left;display:grid;grid-template-columns:auto 1fr;column-gap:7px;background:#fff;color:#632031;box-shadow:0 5px 0 rgba(86,12,28,.24)}.control-btn span{grid-row:1/3;font-size:22px;align-self:center}.control-btn strong{font-size:14px}.control-btn small{font-size:11px;color:#80505a}.control-btn.is-on{background:#eaffdb;color:#285c2c;border-color:#8ad46e}.control-btn.is-off{background:#fff0f2;color:#8e2639;border-color:#ffb4bf}.teacher-tabs{padding-top:5px}.teacher-tabs .tab{background:#fff7f8;border-color:#e896a4}.teacher-tabs .tab.active{background:#b8203a;border-color:#85172b}
.question-list{gap:7px}.teacher-question{padding:9px 11px;border:2px solid #e6a4ae;border-radius:13px;box-shadow:0 3px 0 rgba(132,27,47,.08)}.compact-main{display:grid;grid-template-columns:auto auto minmax(0,1fr) auto;gap:9px;align-items:center}.compact-question-text{font-weight:850;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:0}.compact-actions{display:flex;gap:6px}.compact-btn{padding:6px 9px;font-size:12px;border-radius:9px;box-shadow:none}.compact-sub{font-size:11px;color:#8c6570;margin:3px 0 0 92px}.answer-badge{display:grid;place-items:center;width:32px;height:32px;border-radius:10px;font-size:18px;font-weight:950;border:2px solid}.answer-o-badge{color:#1353b5;border-color:#2f74df;background:#dbeaff}.answer-x-badge{color:#ad1f32;border-color:#dd4858;background:#ffe0e3}.question-details{margin-top:9px;padding:12px;border:2px dashed #e6a4ae;border-radius:12px;background:#fff8f9}.detail-grid{display:grid;grid-template-columns:1fr 2fr;gap:10px}.detail-grid p,.detail-box p{margin:4px 0}.detail-box{margin:8px 0;background:#fff;border:2px solid #efc5cc;border-radius:10px;padding:9px 10px}.compact-comment textarea{min-height:70px}.detail-actions{margin-top:9px}
.student-table-head,.student-row{display:grid;grid-template-columns:minmax(190px,1.4fr) minmax(130px,1fr) 80px 80px 180px;gap:8px;align-items:center}.student-table-head{padding:0 10px 6px;font-size:11px;font-weight:900;color:#8a5b66}.compact-students{gap:4px}.student-row{background:#fff;border:2px solid #e5a6b0;border-radius:10px;padding:6px 9px;min-height:42px;box-shadow:0 2px 0 rgba(128,28,46,.06)}.student-name,.student-nick{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-size:13px}.student-approved-count{font-weight:900;color:#36734b;font-size:13px}.student-actions{display:flex;gap:5px;justify-content:flex-end}.danger-mini{border:2px solid #eb8795;background:#fff1f3;border-radius:12px;padding:11px;margin-top:4px}
.session-list .question-card{border-color:#eaa4af}.danger-zone{border:3px solid #e86f7f}.modal{border:3px solid color-mix(in srgb,var(--primary) 55%,#fff)}
@media(max-width:900px){.teacher-session-banner{grid-template-columns:1fr}.control-buttons{width:100%}.control-btn{flex:1}.student-table-head{display:none}.student-row{grid-template-columns:minmax(0,1fr) auto auto}.student-nick{grid-column:1}.student-approved-count{grid-column:2}.student-row>div:nth-child(4){grid-column:3}.student-actions{grid-column:1/-1;justify-content:flex-start}.compact-main{grid-template-columns:auto auto minmax(0,1fr)}.compact-actions{grid-column:1/-1}.compact-sub{margin-left:0}.detail-grid{grid-template-columns:1fr}}
@media(max-width:720px){.control-buttons{display:grid;grid-template-columns:1fr 1fr}.control-btn{min-width:0}.compact-main{grid-template-columns:auto auto minmax(0,1fr)}.compact-actions{grid-column:1/-1}.compact-btn{padding:7px 8px}.result-summary{gap:15px}.result-summary .score{font-size:39px}.answer-pill{min-height:68px;font-size:25px}.ox button span{font-size:58px}}

/* 2026-08-19 quiz UI refinements */
body[data-theme="quiz"] .ox .ox-o{border-color:#4d8fe6;background:linear-gradient(145deg,#edf5ff,#dbeaff);color:#1558a6;box-shadow:0 7px 0 rgba(40,104,183,.16)}
body[data-theme="quiz"] .ox .ox-x{border-color:#e1606c;background:linear-gradient(145deg,#fff2f3,#ffdfe3);color:#b52d3b;box-shadow:0 7px 0 rgba(181,45,59,.14)}
body[data-theme="quiz"] .ox .ox-o small{color:#326cae}
body[data-theme="quiz"] .ox .ox-x small{color:#b44a55}
body[data-theme="quiz"] .ox .ox-o:hover:not(:disabled){border-color:#2673ce;background:#d8eaff}
body[data-theme="quiz"] .ox .ox-x:hover:not(:disabled){border-color:#c83e4d;background:#ffdce0}
.rating.has-selection .rating-btn:not(.selected){opacity:.48;filter:grayscale(.15);transform:scale(.97)}
.rating-btn.selected{position:relative;transform:translateY(-3px) scale(1.02);box-shadow:0 8px 0 rgba(0,0,0,.10),0 13px 25px rgba(0,0,0,.12)!important}
.rating-btn.up.selected{outline:5px solid rgba(44,157,91,.22);border-color:#258c50!important;background:#dff8e8!important;color:#17693a}
.rating-btn.down.selected{outline:5px solid rgba(204,55,70,.20);border-color:#c83c4b!important;background:#ffe1e5!important;color:#9f2431}
.rating-choice{min-height:18px;font-size:12px;line-height:1.2;margin-top:3px}
.rating-btn.selected .rating-choice{display:block}
.rating-saved{font-size:14px;margin-top:12px;color:#493c19}
.result-summary-grid{display:grid;grid-template-columns:auto repeat(3,1fr);gap:14px;align-items:stretch;text-align:center}
.result-summary-grid .result-emoji{display:grid;place-items:center;padding:0 8px}
.result-stat{min-width:0;background:rgba(255,255,255,.8);border:2px solid #efb2ca;border-radius:16px;padding:13px 10px;display:grid;align-content:center;gap:4px}
.result-stat span{font-size:13px;font-weight:850;color:#8d4965}
.result-stat strong{font-size:24px;line-height:1.15}
.home-result-btn{width:100%;margin-top:18px}
@media(max-width:720px){.result-summary-grid{grid-template-columns:1fr 1fr}.result-summary-grid .result-emoji{grid-column:1/-1}.result-stat strong{font-size:21px}.result-stat:last-child{grid-column:1/-1}}

/* 2026-08-19 result time, review correctness, teacher status filters */
.review-item.review-correct,.review-item.review-wrong{border:2px solid transparent;border-radius:16px;padding:15px 16px;margin:10px 0}
.review-item.review-correct{background:#e9f8d8;border-color:#b9df8e}
.review-item.review-wrong{background:#fff0d7;border-color:#f0bf78}
.review-result-label{display:inline-flex;align-items:center;border-radius:999px;padding:5px 10px;margin-bottom:8px;font-size:13px;font-weight:950}
.review-correct .review-result-label{background:#cfeeae;color:#35651c}
.review-wrong .review-result-label{background:#ffd59a;color:#8b4a0a}
.review-explanation{margin-bottom:0;color:#52604b}
.review-wrong .review-explanation{color:#6f5438}
.result-time-stat strong{font-size:18px;line-height:1.35}
.question-filter-bar{display:flex;gap:9px;flex-wrap:wrap;margin-bottom:14px;padding:12px;background:rgba(255,255,255,.72);border:1px solid var(--line);border-radius:16px}
.question-filter{border:2px solid #d7deea;background:#fff;color:#4d596d;border-radius:999px;padding:9px 13px;cursor:pointer;font-weight:900}
.question-filter b{display:inline-grid;place-items:center;min-width:24px;height:24px;margin-left:4px;padding:0 6px;border-radius:999px;background:#eef1f6}
.question-filter.active{border-color:#586a87;background:#eef3fa;box-shadow:0 0 0 3px rgba(88,106,135,.10)}
.question-filter.approved{border-color:#a9d6b5;color:#286843}.question-filter.approved b{background:#e4f5e9}.question-filter.approved.active{background:#def3e5;border-color:#4b9a66}
.question-filter.rejected{border-color:#efb1b1;color:#a03434}.question-filter.rejected b{background:#fde8e8}.question-filter.rejected.active{background:#ffe4e4;border-color:#cf5555}
.question-filter.pending{border-color:#e5d393;color:#7c6820}.question-filter.pending b{background:#fff5ce}.question-filter.pending.active{background:#fff2bf;border-color:#c9a934}
@media(max-width:720px){.question-filter-bar{display:grid;grid-template-columns:1fr 1fr}.question-filter{width:100%;padding:10px 8px}.result-time-stat strong{font-size:16px}}

/* Student history: separate solving skill from question difficulty */
.modal:has(.student-performance-grid){width:min(820px,100%)}
.student-history-head h2{margin:2px 0 0}.student-history-nick{font-size:14px;color:#758096;font-weight:800;margin-left:6px}
.student-performance-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:18px 0 24px}
.performance-panel{border:2px solid;border-radius:20px;padding:18px;min-width:0}
.solve-performance{background:linear-gradient(145deg,#eef6ff,#f9fcff);border-color:#b9d8f6}
.author-performance{background:linear-gradient(145deg,#fff6e8,#fffbf3);border-color:#f0cf9b}
.performance-title{display:flex;gap:10px;align-items:flex-start;margin-bottom:15px}.performance-title b{display:block;font-size:16px}.performance-title small{display:block;color:#6f7a8e;margin-top:2px}.performance-icon{font-size:28px;line-height:1}
.performance-metrics{display:grid;grid-template-columns:1fr 1fr;gap:10px}.performance-metrics>div{background:rgba(255,255,255,.82);border:1px solid rgba(190,201,218,.7);border-radius:15px;padding:12px}.performance-metrics span{display:block;font-size:12px;color:#6e7890;font-weight:850}.performance-metrics strong{display:inline-block;font-size:27px;line-height:1.15;margin:4px 4px 2px 0}.performance-metrics small{display:block;color:#778195;font-size:11px}
.student-history-section-title{display:flex;align-items:center;justify-content:space-between;gap:10px;margin:22px 0 8px}.student-history-section-title h3{margin:0}.student-history-section-title>span{background:#eef1f6;border-radius:999px;padding:4px 9px;font-size:12px;font-weight:900;color:#667187}.recent-runs-title{margin-top:26px}
.authored-question-history{display:grid;gap:9px}.authored-history-item{border:1px solid #e2e7ef!important;border-radius:15px!important;padding:13px 14px!important;margin:0!important;background:#fff}.authored-history-top{display:flex;gap:9px;align-items:flex-start}.authored-history-top .badge{flex:0 0 auto}.authored-history-top>b{padding-top:3px;line-height:1.45}.authored-history-stats{display:flex;gap:8px;flex-wrap:wrap;margin:8px 0 0 2px}.authored-history-stats span{background:#f5f7fa;border-radius:999px;padding:4px 8px;font-size:12px;color:#697489}
@media(max-width:680px){.student-performance-grid{grid-template-columns:1fr}.performance-metrics strong{font-size:24px}.authored-history-top{display:grid;justify-items:start}}


/* Global typeface: Gowun Dodum */
body,button,input,textarea,select{font-family:"Gowun Dodum",sans-serif}

/* 2026-08-20 login home, my page, session CSV export */
.guest-hero{padding-bottom:18px}.home-login-card{max-width:500px;margin:0 auto}.teacher-entry-btn{display:flex;justify-content:center;align-items:center;text-decoration:none}.logged-home-hero{margin-bottom:20px}.student-home-grid{grid-template-columns:repeat(3,1fr)}.mypage-entry{border-color:#c9b8eb;background:linear-gradient(145deg,#faf7ff,#f0eaff)}.mypage-entry .entry-emoji{filter:saturate(.9)}
body[data-theme="mypage"]{--primary:#7356a8;--primary-2:#5d438c;--soft:#f5f0ff;--line:#ddd2ee;background:linear-gradient(180deg,#fbf9ff 0,#f7f3ff 100%)}
.mypage-heading{margin-bottom:18px}.mypage-summary-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-bottom:24px}.mypage-summary-card{display:grid;grid-template-columns:auto 1fr 1fr;gap:16px;align-items:center;border-width:2px}.mypage-summary-card.solve-summary{background:linear-gradient(145deg,#eef7ff,#fbfdff);border-color:#bddcf5}.mypage-summary-card.author-summary{background:linear-gradient(145deg,#fff7e9,#fffdf7);border-color:#edd3a4}.summary-icon{font-size:34px}.mypage-summary-card>div{background:rgba(255,255,255,.76);border-radius:14px;padding:11px 12px}.mypage-summary-card span:not(.summary-icon){display:block;font-size:12px;color:#6f7a8c;font-weight:850}.mypage-summary-card strong{font-size:27px;margin-right:4px}.mypage-summary-card small{color:#7f8795}.mypage-section-title{display:flex;justify-content:space-between;gap:12px;align-items:flex-end;margin-bottom:10px}.mypage-section-title h2,.mypage-section-title p{margin:0}.mypage-section-title>span{background:#eee7f8;color:#654f88;border-radius:999px;padding:6px 10px;font-weight:900;font-size:12px}.mypage-question-card{border-color:#ddd2ee}.mypage-question-top>.row{flex-wrap:wrap}.mypage-question-stats{display:flex;gap:9px;flex-wrap:wrap;margin-top:10px}.mypage-question-stats span{background:#f4f1f8;border-radius:999px;padding:6px 9px;font-size:12px;color:#655b72}.mypage-question-stats b{color:#463754}.session-export-guide{margin:16px 0 4px;padding:13px 15px;border:2px solid #bfd4ef;background:#f1f7ff;border-radius:14px;display:flex;gap:9px;align-items:center;flex-wrap:wrap}.session-export-guide b{color:#315b8f}.session-export-guide span{font-size:12px;color:#67768a}.session-actions{justify-content:flex-end;flex-wrap:wrap}.exportSession{white-space:nowrap}
@media(max-width:820px){.student-home-grid{grid-template-columns:1fr}.mypage-summary-grid{grid-template-columns:1fr}.mypage-summary-card{grid-template-columns:auto 1fr 1fr}}
@media(max-width:560px){.mypage-summary-card{grid-template-columns:1fr 1fr}.summary-icon{grid-column:1/-1}.mypage-section-title{align-items:flex-start}.session-list .row.between{align-items:flex-start}.session-actions{width:100%;justify-content:flex-start}}

/* 2026-08-20 main/mypage/teacher privacy/footer refinement */
.guest-login-only{margin-top:12px}
.mypage-author-summary{grid-template-columns:auto repeat(3,minmax(0,1fr))}
.author-accuracy-metric{border-left:1px solid #ddd2ee;padding-left:18px}
.public-author-meta{gap:7px 12px;align-items:center}
.public-author-meta>span:first-child{font-weight:850;color:#4e5668}
.public-author-meta>span:not(:first-child){font-size:12px;color:#727b8d;background:#f4f6f9;border:1px solid #e2e6ed;border-radius:999px;padding:3px 8px}
.public-author-meta b{color:#39435a}
.site-footer{max-width:1100px;margin:0 auto;padding:0 18px 24px;text-align:center;color:#7c8493;font-size:12px;letter-spacing:.15px}
body[data-theme="teacher"] .site-footer{max-width:1280px}
@media(max-width:760px){.mypage-author-summary{grid-template-columns:auto 1fr}.mypage-author-summary .author-accuracy-metric{grid-column:2;border-left:0;border-top:1px solid #ddd2ee;padding:12px 0 0}.guest-login-only{margin-top:0}}


/* 2026-08-20 guest mode + compact O/X + teacher meta spacing */
.ox-inline{display:inline-block;min-width:1.05em;text-align:center;font-weight:950;font-family:Arial,"Noto Sans KR",sans-serif;line-height:1;color:#222}
.ox-inline-o{color:#1764c0}.ox-inline-x{color:#c63845}
.public-author-meta{display:flex;flex-wrap:wrap;column-gap:9px!important;row-gap:6px;margin-top:6px!important}
.public-author-chip{margin-right:5px!important;padding-right:3px}
.public-stat-chip{margin-left:0!important}
.mypage-teacher-comment{margin-top:10px;padding:9px 11px;border-radius:11px;background:#fffaf0;border:1px solid #ead8ad;color:#65532c;font-size:13px;line-height:1.5}
.home-session-focus{margin:0 0 18px;padding:18px 22px;border:2px solid #d8dfeb;border-radius:20px;background:linear-gradient(145deg,#fff,#f6f8fb);box-shadow:0 5px 0 rgba(69,82,105,.05)}
.home-session-label{display:inline-flex;border-radius:999px;padding:5px 10px;background:#e9eef6;color:#536178;font-size:12px;font-weight:900}
.home-session-focus h1{font-size:clamp(28px,4vw,46px);line-height:1.15;margin:10px 0 6px;word-break:keep-all}
.home-session-focus>p{margin:0 0 9px;color:#69758a}.home-greeting{font-size:13px;color:#798397;margin-top:8px}
.guest-mode-box{margin-top:8px;padding:13px 14px;border:1px solid #cbd0d7;border-radius:14px;background:#f4f5f6;display:flex;gap:14px;align-items:center;justify-content:space-between}
.guest-mode-box>div{display:grid;gap:2px}.guest-mode-box b{color:#343a43}.guest-mode-box span,.guest-mode-box small{font-size:11px;color:#737b86}.guest-mode-btn{background:#5e646d;border-color:#5e646d;color:#fff;box-shadow:0 4px 0 #454a51}.guest-mode-btn:hover:not(:disabled){background:#50565e}.guest-closed-note{text-align:center;margin:6px 0 0}
body[data-theme="guest"]{--primary:#5c626a;--primary-2:#474c53;--soft:#f0f1f2;--line:#d1d4d8;background:linear-gradient(180deg,#eceeef 0,#f7f7f7 100%);color:#30343a}
body[data-theme="guest"] .topbar{background:rgba(245,246,247,.94);border-color:#d2d5d9}
body[data-theme="guest"] .site-footer{color:#747980}
.guest-intro-card{max-width:660px;margin:18px auto;padding:28px;border:2px solid #c9cdd2;background:linear-gradient(145deg,#fff,#f1f2f3);text-align:center;box-shadow:0 8px 0 rgba(69,73,79,.08)}
.guest-ticket{font-size:42px}.guest-mode-label{display:inline-block;margin-top:6px;border-radius:999px;padding:5px 10px;background:#e2e4e7;color:#555b64;font-size:11px;font-weight:950;letter-spacing:1px}.guest-intro-card h1{margin:8px 0 4px}.guest-session-name{margin:0;color:#5c626d}.guest-session-desc{margin:7px auto 0;color:#777e87;max-width:520px}.guest-readonly-guide{margin:20px 0 16px;padding:16px 18px;text-align:left;border:1px solid #c9cdd2;border-radius:15px;background:#f5f6f7}.guest-readonly-guide>b{display:block;margin-bottom:8px}.guest-readonly-guide ul{margin:0;padding-left:20px;color:#555b63;line-height:1.75}.guest-readonly-guide strong{color:#30343a}.guest-intro-actions{display:flex;gap:10px;justify-content:center}.guest-neutral-btn{background:#5e646d!important;border-color:#5e646d!important;color:#fff!important;box-shadow:0 4px 0 #454a51!important}.guest-neutral-btn:hover:not(:disabled){background:#50565e!important}.guest-closed-panel{margin:15px 0;padding:13px;border-radius:13px;background:#e2e4e7;color:#555b62;font-weight:900}.guest-quiz-card,.guest-result-card{border-color:#c7cbd0!important;background:#fbfbfb!important}.guest-author-chip,.guest-score-box,.guest-pre-stats span{background:#eceeef!important;border-color:#d2d5d9!important;color:#50565f!important}.guest-progress{background:#dfe2e5!important}.guest-progress>div{background:#737981!important}.guest-readonly-mini,.guest-no-rating,.guest-result-note{margin:13px 0;padding:10px 12px;border:1px solid #cdd1d5;border-radius:12px;background:#eff1f2;color:#5b6169;text-align:center;font-size:13px;font-weight:850}.guest-explanation{border-color:#d0d3d6!important;background:#f6f7f7!important}.guest-result-card .result-stat{border-color:#c9cdd2;background:#f4f5f6}.guest-result-card .result-stat span{color:#646a72}
@media(max-width:680px){.guest-mode-box{align-items:stretch;flex-direction:column}.guest-mode-btn{width:100%}.guest-intro-actions{display:grid}.home-session-focus{padding:16px}.home-session-focus h1{font-size:30px}}
.review-warning{background:#fff3e3;border:1.5px solid #f0ad63;color:#8a4b16;padding:11px 13px;border-radius:13px;font-weight:800;line-height:1.5}.review-warning b{color:#b33b2e}.review-warning.compact{margin:12px 0 14px;font-size:14px}

/* Teacher -> student view access */
.teacher-impersonation-badge{display:inline-flex;align-items:center;margin-left:7px;padding:2px 7px;border-radius:999px;background:#fff0c9;color:#7a5200;border:1px solid #e7c56b;font-size:11px;font-weight:900;vertical-align:middle}
@media(min-width:901px){.student-table-head,.student-row{grid-template-columns:minmax(190px,1.4fr) minmax(130px,1fr) 80px 80px minmax(285px,auto)}}

/* 2026-08-22 ranking + bulk review */
.top-ranking-link{display:inline-flex;align-items:center;gap:4px;padding:5px 9px;border-radius:999px;border:1px solid #d8deea;background:rgba(255,255,255,.75);color:#59657a;text-decoration:none;font-size:12px;font-weight:900;white-space:nowrap}.top-ranking-link:hover{background:#fff;color:#37445b}.top-user-row{justify-content:flex-end}
body[data-theme="ranking"]{--primary:#8a681b;--primary-dark:#684d0f;--line:#e9dfc5;background:radial-gradient(circle at 12% 4%,#fff2bf 0,transparent 27%),radial-gradient(circle at 92% 7%,#e6efff 0,transparent 29%),linear-gradient(180deg,#fffdf7,#f8f7f3)}
.ranking-heading{padding:12px 4px 20px}.ranking-heading>span{font-size:12px;font-weight:950;letter-spacing:1px;color:#8a681b}.ranking-heading h1{font-size:clamp(30px,4.5vw,46px);margin:5px 0 3px}.ranking-heading p{margin:0;color:#697386}.ranking-heading small{display:block;margin-top:6px;color:#9298a4}
.ranking-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.ranking-panel{padding:20px}.ranking-panel-head h2{font-size:20px;margin:4px 0}.ranking-panel-head p{font-size:12px;color:#7b8391;margin:0 0 14px}.ranking-kicker{font-size:12px;font-weight:900;color:#6b7482}.solve-ranking{border-color:#cfdff5}.author-ranking{border-color:#ead9bb}.ranking-list{display:grid;gap:8px}.ranking-row{display:grid;grid-template-columns:36px minmax(0,1fr) auto;gap:10px;align-items:center;padding:10px 11px;border:1px solid #e6e9ef;background:#fff;border-radius:13px}.ranking-place{display:grid;place-items:center;width:30px;height:30px;border-radius:50%;background:#edf0f5;color:#657085;font-weight:950}.ranking-row.podium-1 .ranking-place{background:#ffeaa3;color:#785a00}.ranking-row.podium-2 .ranking-place{background:#e8ebef;color:#56606e}.ranking-row.podium-3 .ranking-place{background:#f5dfcd;color:#82532e}.ranking-user{min-width:0}.ranking-user b{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.ranking-side{display:flex;gap:8px;align-items:baseline;justify-content:flex-end;flex-wrap:wrap;color:#788191;font-size:11px}.ranking-key{font-size:18px;font-weight:950;line-height:1}.solve-key{color:#1769a8}.author-key{color:#c56b24}.ranking-empty{padding:24px 8px;text-align:center;color:#8c94a0;border:1px dashed #d9dee7;border-radius:13px}.ranking-expand-wrap{text-align:center;margin-top:16px}.teacher-ranking-intro{display:flex;justify-content:space-between;align-items:flex-end;gap:12px;margin:3px 0 14px;padding:3px 2px}.teacher-ranking-intro span{font-size:12px;font-weight:900;color:#6e7890}.teacher-ranking-intro h2{margin:2px 0 0}.teacher-ranking-intro small{color:#8a92a0}
.bulk-review-bar{display:flex;justify-content:space-between;align-items:center;gap:14px;margin:0 0 12px;padding:12px 14px;border:1px solid #d5ddea;border-radius:14px;background:rgba(255,255,255,.88)}.bulk-review-bar>div:first-child{display:grid;gap:2px}.bulk-review-bar span{font-size:11px;color:#7b8494}.bulk-review-bar .btn{padding:8px 11px;font-size:12px}
@media(max-width:760px){.ranking-grid{grid-template-columns:1fr}.ranking-row{grid-template-columns:34px minmax(0,1fr) auto}.bulk-review-bar{align-items:stretch;flex-direction:column}.bulk-review-bar>.row,.bulk-review-bar>.btn{width:100%}.bulk-review-bar .row .btn{flex:1}.teacher-ranking-intro{align-items:flex-start;flex-direction:column}.top-user-row .small{display:none}}

/* 2026-08-22 always-visible home TOP 3 */
.home-ranking-summary{margin:0 0 18px}.home-ranking-summary-head{display:flex;align-items:flex-end;justify-content:space-between;gap:12px;margin:0 2px 9px}.home-ranking-summary-head>div{display:grid;gap:2px}.home-ranking-summary-head span{font-size:13px;font-weight:950;color:#5f6878}.home-ranking-summary-head small{font-size:11px;color:#9198a4}.home-ranking-more{font-size:11px;font-weight:900;color:#6a7382;text-decoration:none;white-space:nowrap}.home-ranking-more:hover{text-decoration:underline}.home-ranking-summary .ranking-grid{gap:12px}.home-ranking-summary .ranking-panel{padding:14px 15px}.home-ranking-summary .ranking-panel-head h2{font-size:16px;margin:2px 0}.home-ranking-summary .ranking-panel-head p{font-size:11px;margin-bottom:9px}.home-ranking-summary .ranking-kicker{font-size:11px}.home-ranking-summary .ranking-row{padding:8px 9px;border-radius:11px}.home-ranking-summary .ranking-place{width:26px;height:26px;font-size:12px}.home-ranking-summary .ranking-key{font-size:16px}.home-ranking-summary .ranking-side{font-size:10px}
@media(max-width:760px){.home-ranking-summary-head{align-items:flex-start}.home-ranking-summary .ranking-panel{padding:13px}.home-ranking-summary .ranking-grid{gap:10px}}


/* 2026-08-22: third ranking + compact login ranking + signup approval */
.ranking-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
.recommend-ranking{border-color:#d9d1f4}.recommend-key{color:#7454c7}
.login-ranking-summary{margin-bottom:10px}
.login-ranking-summary .home-ranking-summary-head{margin-bottom:5px;align-items:center}
.login-ranking-summary .home-ranking-summary-head span{font-size:11px}
.login-ranking-summary .home-ranking-summary-head small{font-size:9px}
.login-ranking-summary .home-ranking-more{font-size:9px}
.login-ranking-summary .ranking-grid{gap:7px}
.login-ranking-summary .ranking-panel{padding:8px 9px;border-radius:13px}
.login-ranking-summary .ranking-panel-head h2{font-size:12px;margin:1px 0}
.login-ranking-summary .ranking-panel-head p{font-size:8.5px;line-height:1.3;margin:0 0 5px}
.login-ranking-summary .ranking-kicker{font-size:9px}
.login-ranking-summary .ranking-list{gap:4px}
.login-ranking-summary .ranking-row{grid-template-columns:24px minmax(0,1fr) auto;gap:5px;padding:5px 6px;border-radius:9px}
.login-ranking-summary .ranking-place{width:20px;height:20px;font-size:9px}
.login-ranking-summary .ranking-user b{font-size:10px}
.login-ranking-summary .ranking-side{font-size:8px;gap:4px}
.login-ranking-summary .ranking-key{font-size:12px}
.login-ranking-summary .ranking-empty{font-size:9px;padding:12px 4px}
.signup-pending-tab-badge{margin-left:4px;padding:2px 5px;border-radius:999px;background:#fff0c7;color:#8a5a00;font-size:9px;font-weight:950}
.signup-approval-panel{border:1px solid #f1d28a;background:#fffaf0;border-radius:18px;padding:16px;margin-bottom:18px}
.signup-approval-head{display:flex;justify-content:space-between;align-items:flex-end;gap:12px;margin-bottom:10px}.signup-approval-head span{font-size:11px;font-weight:950;color:#a16a00}.signup-approval-head h2{margin:2px 0 0;font-size:19px}.signup-approval-head small{color:#8a8170}
.signup-request-list{display:grid;gap:8px}.signup-request-row{display:flex;justify-content:space-between;align-items:center;gap:12px;background:#fff;border:1px solid #eee1bf;border-radius:12px;padding:10px 12px}.signup-request-row>div:first-child{display:flex;align-items:baseline;gap:10px;flex-wrap:wrap}.signup-request-row span{font-size:12px;color:#727986}.student-list-label{display:flex;justify-content:space-between;align-items:center;margin:0 2px 9px;color:#687180;font-size:12px}.student-list-label b{font-size:14px;color:#2e3540}.signup-pending-modal{text-align:center}.signup-pending-modal .auth-icon{margin:0 auto 8px}
@media(max-width:1000px){.ranking-grid{grid-template-columns:1fr}.login-ranking-summary .ranking-grid{grid-template-columns:1fr 1fr 1fr}.login-ranking-summary .ranking-panel-head p{display:none}}
@media(max-width:760px){.login-ranking-summary .ranking-grid{grid-template-columns:1fr}.login-ranking-summary .ranking-panel{padding:8px}.login-ranking-summary .ranking-panel-head{display:none}.signup-request-row,.signup-approval-head{align-items:stretch;flex-direction:column}.signup-request-row .row{width:100%}.signup-request-row .row .btn{flex:1}}


/* 2026-08-22 personal ranking achievements + current-session mypage */
.ranking-my-achievement{display:flex;align-items:center;justify-content:space-between;gap:8px;flex-wrap:wrap;margin:0 0 10px;padding:7px 9px;border:1px solid #eadb9e;border-radius:11px;background:linear-gradient(105deg,#fff9d9,#fff,#f5f0ff);box-shadow:0 3px 10px rgba(122,92,20,.08);font-size:10px;color:#717887}.ranking-my-achievement>span b{color:#473b1e;font-size:12px}.ranking-my-achievement>div{display:flex;gap:4px;flex-wrap:wrap}.rank-achievement{display:inline-flex;align-items:center;padding:4px 7px;border-radius:999px;font-size:9px;font-weight:950;letter-spacing:.1px;box-shadow:0 2px 7px rgba(0,0,0,.09);white-space:nowrap}.rank-top10pct{background:linear-gradient(135deg,#fff0a8,#ffd264);color:#765200;border:1px solid #edbd43}.rank-top20pct{background:linear-gradient(135deg,#eee2ff,#d8c1ff);color:#66439b;border:1px solid #c6a9f4}.rank-top10{background:linear-gradient(135deg,#dff4ff,#bfe6ff);color:#21638c;border:1px solid #9ed2ee}.ranking-row.is-me{outline:2px solid rgba(129,98,200,.25);background:linear-gradient(100deg,#fff,#fbf8ff)}
.login-ranking-summary .ranking-my-achievement{display:none}
.mypage-scope-switch{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:0 0 14px;padding:12px 14px;border:1px solid #cfd9e8;border-radius:14px;background:linear-gradient(135deg,#f4f8ff,#fff)}.mypage-scope-switch>div{display:grid;gap:2px}.mypage-scope-switch b{font-size:13px;color:#405b7c}.mypage-scope-switch span{font-size:11px;color:#79869a}.mypage-scope-switch.is-total{border-color:#d7d9dd;background:linear-gradient(135deg,#f4f4f4,#fafafa)}.mypage-scope-switch.is-total b{color:#595d63}.mypage-scope-btn{font-size:11px}.mypage-current-session-desc{margin:-5px 2px 15px;color:#7d8796;font-size:12px}.mypage-total-compact{filter:saturate(.65)}.mypage-total-compact .mypage-summary-grid{gap:9px;margin-bottom:15px}.mypage-total-compact .mypage-summary-card{padding:12px;gap:9px;border-color:#d8dadd;background:#f7f7f7}.mypage-total-compact .summary-icon{font-size:25px}.mypage-total-compact .mypage-summary-card>div{padding:7px 8px;background:#fff}.mypage-total-compact .mypage-summary-card strong{font-size:20px}.mypage-total-compact .mypage-question-card{padding:12px;border-color:#dcdee1;background:#fbfbfb}.mypage-total-compact .question-text{font-size:14px}.mypage-total-compact .mypage-question-stats span{font-size:10px;padding:5px 7px;background:#efefef}.mypage-total-compact .mypage-teacher-comment{font-size:11px;padding:7px 9px;background:#f5f5f5;border-color:#ddd}
@media(max-width:760px){.ranking-my-achievement{align-items:flex-start;flex-direction:column}.mypage-scope-switch{align-items:flex-start;flex-direction:column}.mypage-scope-switch .mypage-scope-btn{width:100%}}

/* Quiz repeat mode controls */
.quiz-mode-controls{display:grid;grid-template-columns:1fr 1fr;gap:10px;min-width:min(520px,100%)}
.quiz-mode-controls .control-btn{min-width:0}
.quiz-mode-settings-note{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 12px;margin:4px 0 14px;border-radius:12px;background:#f4f5f7;color:#4d5561;font-size:.9rem}
.all-done-card{text-align:center;max-width:620px;margin:28px auto;padding:38px 30px}
.all-done-emoji{font-size:3.5rem;margin-bottom:8px}
.all-done-card h1{margin:12px 0 8px}
.all-done-cheer{font-weight:700;font-size:1.12rem;margin:18px 0 24px;color:#50612c}
@media (max-width:760px){.quiz-mode-controls{grid-template-columns:1fr}.teacher-session-banner .control-buttons{width:100%}}

/* 2026-08-22 ranking badge emphasis + teacher quiz controls layout polish */
.ranking-my-achievement{
  justify-content:flex-start;
  width:max-content;
  max-width:100%;
  padding:5px 7px;
  border:0;
  background:transparent;
  box-shadow:none;
}
.ranking-my-achievement>div{display:flex;align-items:center}
.rank-achievement{
  padding:4px 8px;
  font-size:9px;
  font-weight:1000;
  border-width:1px;
  border-style:solid;
  box-shadow:0 3px 9px rgba(0,0,0,.18),inset 0 1px 0 rgba(255,255,255,.55);
}
.rank-top10pct{
  background:linear-gradient(135deg,#ffe100,#ff9f00);
  color:#5b2a00;
  border-color:#ff8a00;
}
.rank-top20pct{
  background:linear-gradient(135deg,#c85cff,#7d35ff);
  color:#fff;
  border-color:#6c22ef;
}
.rank-top10{
  background:linear-gradient(135deg,#21c8ff,#0877ff);
  color:#fff;
  border-color:#0068ea;
}

.teacher-session-banner .control-buttons{
  display:grid;
  grid-template-columns:minmax(150px,.8fr) minmax(0,2fr);
  gap:10px;
  width:min(700px,100%);
  max-width:100%;
  min-width:0;
  justify-self:end;
  align-items:stretch;
}
.teacher-session-banner .control-buttons>.control-btn,
.teacher-session-banner .quiz-mode-controls .control-btn{
  width:100%;
  min-width:0;
  max-width:100%;
  box-sizing:border-box;
}
.teacher-session-banner .quiz-mode-controls{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:10px;
  width:100%;
  min-width:0;
  max-width:100%;
}
@media(max-width:1120px){
  .teacher-session-banner{grid-template-columns:1fr}
  .teacher-session-banner .control-buttons{justify-self:stretch;width:100%}
}
@media(max-width:760px){
  .teacher-session-banner .control-buttons{grid-template-columns:1fr}
  .teacher-session-banner .quiz-mode-controls{grid-template-columns:1fr 1fr}
}
@media(max-width:520px){
  .teacher-session-banner .quiz-mode-controls{grid-template-columns:1fr}
}
.teacher-full-question{margin-top:14px;background:#f8fbff;border-color:#cfdced}.teacher-full-question p{margin:8px 0 0;white-space:normal;overflow:visible;text-overflow:clip;word-break:keep-all;overflow-wrap:anywhere;line-height:1.7;font-size:16px;font-weight:800;color:#24304a}

/* Problem-solving caution: shown before student and guest quizzes */
.quiz-safety-warning{margin:18px 0;padding:18px 20px;border:3px solid #e22534;border-radius:18px;background:linear-gradient(145deg,#fff1f2,#ffe1e4);color:#801722;box-shadow:0 8px 22px rgba(190,31,47,.14);text-align:left}.quiz-safety-warning-title{margin-bottom:9px;color:#bd1423;font-size:18px;font-weight:950;letter-spacing:-.2px}.quiz-safety-warning p{margin:7px 0;font-size:14px;line-height:1.65;font-weight:750}.quiz-safety-warning p b{color:#a50918;font-weight:950}.quiz-safety-sign{margin-top:12px;padding-top:10px;border-top:1px solid #f1a1aa;color:#a30f1c;font-size:14px;font-weight:950;text-align:right}@media(max-width:600px){.quiz-safety-warning{padding:15px 16px;border-width:2px}.quiz-safety-warning-title{font-size:17px}.quiz-safety-warning p{font-size:13px}.quiz-safety-sign{font-size:13px}}

/* ===== Multi-session selection / management ===== */
.session-picker{max-width:1100px;margin:18px auto 32px}.session-picker-head{text-align:center;margin-bottom:18px}.session-picker-head>span{display:inline-block;font-size:12px;font-weight:900;letter-spacing:.12em;color:#667085;margin-bottom:6px}.session-picker-head h1{margin:0 0 7px;font-size:clamp(25px,4vw,38px)}.session-picker-head p{margin:0;color:#667085}.session-picker-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:14px}.session-choice-card{display:flex;flex-direction:column;gap:10px;border:1px solid #dce3ed;box-shadow:0 8px 22px rgba(30,41,59,.06)}.session-choice-card h2{margin:0;font-size:21px}.session-choice-card p{margin:0;min-height:42px}.session-choice-card .chooseSession{margin-top:auto}.session-choice-card.is-closed{opacity:.62}.session-choice-status{display:flex;flex-wrap:wrap;gap:6px;font-size:11px;font-weight:800}.session-choice-status span{padding:4px 7px;border-radius:999px;background:#f2f4f7}.session-choice-status .session-open-dot{color:#067647;background:#ecfdf3}.home-session-topline{width:100%;gap:12px}.action-card.action-disabled{opacity:.62}.guest-picker-back{text-align:center;margin:-12px 0 28px}

.multi-session-list{display:grid;gap:14px;margin-top:16px}.multi-session-admin-card{padding:18px;border:1px solid #e1e6ef}.multi-session-admin-card.is-admin-focus{box-shadow:0 0 0 2px rgba(220,38,38,.12),0 10px 25px rgba(17,24,39,.06)}.multi-session-admin-head{display:flex;justify-content:space-between;gap:14px;align-items:flex-start}.multi-session-admin-head h3{margin:0}.session-public-badge{background:#e8fff2!important;color:#067647!important}.session-independent-controls{display:grid;grid-template-columns:minmax(150px,.8fr) minmax(150px,.8fr) minmax(330px,2fr) minmax(180px,.9fr);gap:10px;margin-top:14px;align-items:stretch}.session-state-btn{border:1px solid #d0d5dd;border-radius:14px;background:#fff;padding:10px 12px;text-align:left;min-width:0;cursor:pointer;display:flex;flex-direction:column;gap:2px}.session-state-btn b{font:inherit;font-weight:900}.session-state-btn small{font-size:11px;color:#667085}.session-state-btn.on{border-color:#16a34a;background:#f0fdf4;box-shadow:inset 0 0 0 1px rgba(22,163,74,.08)}.session-quiz-mode-group{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:7px}.session-count-control{border:1px solid #e4e7ec;border-radius:14px;padding:9px 10px;background:#fafafa}.session-count-control label{display:block;font-size:11px;font-weight:800;color:#667085;margin-bottom:5px}.session-count-control>div{display:flex;gap:6px}.session-count-control input{width:72px;min-width:0;border:1px solid #d0d5dd;border-radius:9px;padding:7px}.session-count-control .btn{padding:7px 10px}.multi-session-admin-card .session-actions{justify-content:flex-end;flex-wrap:wrap}
@media(max-width:980px){.session-independent-controls{grid-template-columns:1fr 1fr}.session-quiz-mode-group{grid-column:1/-1}.session-count-control{grid-column:1/-1}.multi-session-admin-head{flex-direction:column}.multi-session-admin-card .session-actions{justify-content:flex-start}}
@media(max-width:600px){.session-picker-grid{grid-template-columns:1fr}.session-independent-controls{grid-template-columns:1fr}.session-quiz-mode-group{grid-column:auto;grid-template-columns:1fr}.session-count-control{grid-column:auto}.session-state-btn{text-align:center}.multi-session-admin-head{gap:9px}}

/* D1 optimization UI: hourly ranking notice + paged teacher questions */
.ranking-refresh-notice{
  margin:10px 0 14px;
  padding:8px 12px;
  border:1px solid #f2c66d;
  border-radius:12px;
  background:#fff8df;
  color:#78510a;
  font-size:.82rem;
  line-height:1.35;
  text-align:center;
}
.login-ranking-summary .ranking-refresh-notice{
  margin:6px 0 8px;
  padding:5px 8px;
  border-radius:9px;
  font-size:.68rem;
}
body[data-theme="teacher"] .ranking-refresh-notice{
  background:#fff4e8;
  border-color:#f0b06b;
  color:#7b3f0b;
}
.teacher-question-pager{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  margin-top:14px;
  padding:10px 12px;
  border:1px solid #e3e6ec;
  border-radius:14px;
  background:#fff;
  font-size:.84rem;
  color:#687080;
}
.teacher-question-pager>div{display:flex;gap:8px;}
.teacher-question-pager .btn{padding:7px 12px;min-width:74px;}
.teacher-question-pager .btn:disabled{opacity:.38;cursor:not-allowed;}
@media(max-width:640px){
  .teacher-question-pager{align-items:stretch;flex-direction:column;text-align:center;}
  .teacher-question-pager>div{display:grid;grid-template-columns:1fr 1fr;}
}


/* stage 4: session counts + teacher sorting */
.session-question-count{display:inline-flex;align-items:center;gap:5px;margin:2px 0 10px;padding:5px 9px;border-radius:999px;background:#f3f6fb;color:#465366;font-size:.82rem;font-weight:700}
.session-question-count b{font-size:.95rem;color:#1f2937}
.teacher-question-sortbar{display:flex;align-items:center;justify-content:flex-end;gap:8px;margin:10px 0 14px;padding:8px 10px;border:1px solid #e5e7eb;border-radius:12px;background:#fafafa}
.teacher-question-sortbar span{font-size:.82rem;font-weight:800;color:#6b7280}
.teacher-question-sortbar select{min-width:190px;padding:8px 10px;border:1px solid #d1d5db;border-radius:9px;background:#fff;font:inherit;font-size:.9rem}
@media (max-width:700px){.teacher-question-sortbar{justify-content:stretch}.teacher-question-sortbar select{flex:1;min-width:0}}

/* Build version footer */
.site-version{margin-top:3px;font-size:10px;line-height:1.35;letter-spacing:.35px;opacity:.72}