@import url('https://fonts.googleapis.com/css2?family=Nunito:wght@400;500;600;700;800;900&display=swap');
:root{--ink:#35304d;--muted:#7c7594;--purple:#705ba6;--deep:#56428c;--lavender:#eeeafa;--bg:#f7f4fc;--white:#fff;--line:#e3dcf0;--peach:#fff0e6;--green:#267c5c;--red:#b54f66;--shadow:0 14px 35px rgba(76,57,114,.08)}
*{box-sizing:border-box}body{margin:0;background:linear-gradient(135deg,#f8f5fd,#f3f2ff 60%,#fef6f7);color:var(--ink);font-family:Nunito,system-ui,-apple-system,Segoe UI,sans-serif;font-size:16px;min-height:100vh}button,input,textarea,select{font:inherit}button{cursor:pointer}button:disabled{opacity:.5;cursor:not-allowed}a{color:var(--deep)}.topbar{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:12px max(20px,calc((100vw - 1220px)/2));background:#fffcff;box-shadow:0 2px 0 #e9e3f1;min-height:80px}.brand{display:flex;gap:12px;align-items:center}.brand img{width:55px;height:55px}.brand strong{font-size:1.25rem;display:block;color:#393251}.brand small{font-size:.77rem;font-weight:700;color:#9287a5;letter-spacing:.03em}.topbar nav{display:flex;gap:8px;align-items:center;flex-wrap:wrap}.shell{max-width:1220px;margin:0 auto;padding:30px 20px 65px}.card{background:#fff;border:1.5px solid var(--line);border-radius:25px;box-shadow:var(--shadow);padding:26px}.hero{background:linear-gradient(115deg,#e9e2f8,#f9edf1);border:1px solid #e4d8ed;border-radius:26px;padding:30px 35px;display:flex;align-items:center;justify-content:space-between;gap:20px;position:relative;overflow:hidden}.hero h1{font-size:clamp(1.65rem,3vw,2.35rem);margin:0 0 8px;line-height:1.2}.hero p{margin:0;color:#6b6180;max-width:650px}.hero img{width:155px;max-width:25%;filter:drop-shadow(0 12px 8px #ac9abe55)}.eyebrow{font-size:.77rem;letter-spacing:.13em;text-transform:uppercase;font-weight:900;color:#876bae}.btn{border:1.5px solid #dcd2ee;border-radius:14px;background:white;color:#594778;padding:11px 18px;font-weight:900;transition:transform .12s,background .12s;display:inline-flex;align-items:center;justify-content:center;gap:8px;text-decoration:none;min-height:46px}.btn:hover:not(:disabled){transform:translateY(-1px);background:#faf7ff}.btn-primary{background:var(--purple);color:#fff;border-color:var(--purple);box-shadow:0 4px 0 #4e4085}.btn-primary:hover:not(:disabled){background:var(--deep)}.btn-success{background:#267c5c;color:#fff;border-color:#267c5c}.btn-danger{background:#fff2f4;color:#a94b65;border-color:#f4cad4}.btn-ghost{border-color:transparent;background:transparent}.btn-small{font-size:.86rem;min-height:36px;padding:7px 12px}.btn-large{padding:15px 22px;font-size:1.1rem;min-height:56px}.row{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.between{justify-content:space-between}.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:20px}.muted{color:var(--muted)}.small{font-size:.87rem}.space-top{margin-top:20px}.section-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:23px 0 14px}.section-head h2,.card h2{margin:0;font-size:1.4rem}.tabs{display:flex;gap:8px;flex-wrap:wrap}.tab{padding:12px 17px;border-radius:13px;border:1px solid var(--line);background:white;color:#66577a;font-weight:900}.tab.active{background:var(--purple);color:white;border-color:var(--purple)}.field{display:block}.field span{display:block;font-size:.86rem;font-weight:900;margin-bottom:6px;color:#675a80}.field input,.field select,.field textarea,.input{border:1.5px solid #dcd3ed;border-radius:12px;padding:11px 12px;width:100%;background:#fff;color:#35304d;outline:0}.field textarea{min-height:76px;resize:vertical}.field input:focus,.field textarea:focus,.field select:focus,.input:focus{border-color:#806ab5;box-shadow:0 0 0 3px #dfd5f399} .inline-label{font-size:.82rem;font-weight:900;color:#796a91}.student-edit-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:12px}.word-list{display:grid;gap:11px}.word-row{display:grid;grid-template-columns:58px minmax(120px,.7fr) minmax(180px,1.6fr) minmax(130px,1fr) 70px 80px;align-items:center;gap:12px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:12px}.word-picture{height:54px;width:58px;border-radius:12px;background:#f1ecf8;object-fit:cover;display:flex;align-items:center;justify-content:center;font-size:2rem}.word-name{font-weight:900}.word-clue{color:#6b617b;font-size:.86rem;line-height:1.45}.word-row select{border:1.5px solid #dcd3ed;padding:9px 8px;border-radius:10px;background:white;width:100%;color:#514267;font-weight:800}.toggle{display:flex;gap:6px;align-items:center;justify-content:center;font-size:.74rem;font-weight:800;color:#6e627a}.toggle input{width:20px;height:20px;accent-color:#705ba6}.pill{display:inline-block;background:#ebe5f7;color:#644fa2;font-size:.76rem;padding:5px 10px;font-weight:900;border-radius:999px}.pill.green{background:#e4f4eb;color:#267c5c}.pill.amber{background:#fff2d9;color:#956124}.note{border-radius:14px;padding:14px 16px;background:#f7f2ff;border:1px solid #e6ddf2;color:#685e80;font-size:.91rem}.warning{background:#fff7e9;border-color:#f2dec0}.footer-note{color:#8a7c9c;text-align:center;font-size:.84rem;margin:24px}.login-wrap{max-width:440px;margin:45px auto}.login-wrap .card{text-align:center}.login-wrap img{width:140px}.login-wrap h1{margin:0}.login-wrap p{color:var(--muted)}.login-wrap .field{text-align:left;margin:22px 0}.session-grid{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(280px,.8fr);gap:20px}.qr-card{display:flex;flex-direction:column;align-items:center;text-align:center;gap:10px}.qr-card img{width:min(245px,100%);aspect-ratio:1;object-fit:contain;background:white;border:1px solid #e7e2ec;border-radius:12px;padding:10px}.qr-card code{font-size:.85rem;overflow-wrap:anywhere;color:#675b81}.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.stat{border-radius:16px;background:#f7f4fd;padding:15px;text-align:center}.stat strong{display:block;font-size:1.6rem}.stat span{font-size:.83rem;color:#837495}.progress-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.progress-item{background:#faf8ff;border:1px solid #ede7f4;border-radius:14px;padding:13px;display:flex;justify-content:space-between;gap:12px;align-items:center}.progress-item strong{font-size:.93rem}.progress-item small{display:block;color:var(--muted)}.progress-track{width:100%;height:11px;background:#e9e1f0;overflow:hidden;border-radius:999px;margin-top:7px}.progress-fill{height:100%;background:linear-gradient(90deg,#7b67b7,#d0a2db);border-radius:999px}.student-main{max-width:820px;margin:10px auto}.student-hero{text-align:center;padding:12px 0 18px}.student-hero img{height:124px}.student-hero h1{font-size:clamp(1.8rem,5vw,2.6rem);margin:0}.student-hero p{margin:5px 0;color:#827495}.student-picks{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:16px}.student-card{border:2px solid #ddd1ed;background:#fff;border-radius:22px;padding:10px;box-shadow:0 5px 0 #e6e0f0;text-align:center;color:#574778;font-weight:900}.student-card:not(:disabled):hover{background:#faf6ff}.student-card:not(:disabled):active{transform:translateY(3px);box-shadow:none}.student-card.taken{opacity:.52}.student-photo{aspect-ratio:1/1;border-radius:18px;overflow:hidden;background:#f0ebf7;margin-bottom:10px;display:flex;align-items:center;justify-content:center}.student-photo img{width:100%;height:100%;object-fit:cover}.student-photo-placeholder{font-size:3rem}.student-card-name{font-size:1.1rem;line-height:1.2}.student-card-status{font-size:.8rem;color:#7a6a94;margin-top:4px}.question-visual{display:flex;align-items:center;justify-content:center;height:205px;border-radius:22px;background:radial-gradient(ellipse,#faf0ff,#e8e4fa);margin-bottom:18px}.question-visual img{width:100%;height:100%;object-fit:contain;border-radius:20px}.question-visual .emoji{font-size:6.5rem}.question-card{text-align:center}.question-card h2{font-size:clamp(1.5rem,4vw,2.1rem);margin:10px 0 24px;line-height:1.35}.answer-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:15px}.answer-btn{min-height:82px;font-size:clamp(1.12rem,2.5vw,1.5rem);font-weight:900;letter-spacing:.01em;background:#fff;border:2px solid #dcd0ee;color:#554471;border-radius:17px;box-shadow:0 5px 0 #e5def1}.answer-btn:active:not(:disabled){box-shadow:none;transform:translateY(4px)}.answer-btn:hover:not(:disabled){background:#f6f0ff}.answer-btn.right{background:#e3f6e9;border-color:#79ba92;color:#206c48}.answer-btn.wrong{background:#ffe8ec;border-color:#e49daf;color:#a64058}.progress-header{display:flex;justify-content:space-between;align-items:center;font-weight:900;color:#7a6a94;margin:0 0 12px}.feedback{border-radius:16px;padding:20px;margin:20px 0;font-weight:900;font-size:1.2rem}.feedback.yes{background:#e6f6e9;color:#226d47}.feedback.no{background:#fff0f1;color:#9f4358}.complete{text-align:center;padding:25px 10px}.complete .medal{font-size:5rem}.complete h2{font-size:2rem;margin:10px}.overlay{position:fixed;inset:0;background:#29203d9e;display:flex;align-items:center;justify-content:center;padding:20px;z-index:20}.modal{max-width:620px;width:100%;max-height:92vh;overflow-y:auto;background:white;border-radius:24px;padding:24px;box-shadow:0 35px 90px #30214140}.modal h2{margin:0 0 16px}.modal-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.modal .field{margin-bottom:13px}.upload-preview{height:130px;border:1px dashed #d8c9ea;background:#f8f4fd;border-radius:15px;display:flex;align-items:center;justify-content:center;margin-bottom:10px}.upload-preview img{height:100%;max-width:100%;object-fit:contain}.upload-preview span{font-size:3.5rem}.toast{position:fixed;right:22px;bottom:22px;background:#39304b;color:white;border-radius:13px;padding:14px 20px;box-shadow:var(--shadow);max-width:350px;z-index:30;opacity:0;transform:translateY(15px);transition:.2s;pointer-events:none}.toast.show{opacity:1;transform:translateY(0)}.loading{display:flex;gap:14px;align-items:center;justify-content:center;padding:100px 0;color:#78678f}.spinner{width:24px;height:24px;border:3px solid #dbd3ec;border-top-color:var(--purple);border-radius:100%;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.center{text-align:center}.hide{display:none!important}.divider{height:1px;background:var(--line);margin:20px 0}
@media(max-width:900px){.student-edit-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.word-row{grid-template-columns:55px 1fr 1fr;gap:8px}.word-clue{grid-column:2/4}.word-row select{grid-column:2/3}.word-row .toggle{grid-column:3/4;grid-row:3}.word-row .word-edit{grid-column:1/2;grid-row:3}.session-grid{grid-template-columns:1fr}.progress-list{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:620px){.topbar{padding:10px 14px;min-height:65px}.brand img{width:43px;height:43px}.brand strong{font-size:1rem}.brand small{font-size:.67rem}.shell{padding:18px 12px 55px}.card{padding:18px;border-radius:20px}.hero{padding:18px}.hero img{width:100px}.hero h1{font-size:1.55rem}.student-edit-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.word-row{grid-template-columns:46px minmax(0,1fr) minmax(0,1fr)}.word-picture{width:46px;height:52px}.word-row select{font-size:.85rem}.word-clue{font-size:.81rem}.progress-list{grid-template-columns:1fr}.stat-grid{gap:6px}.stat{padding:9px}.student-picks{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.answer-grid{gap:10px}.student-card{padding:8px}.student-card-name{font-size:1rem}.answer-btn{min-height:74px}.question-visual{height:165px}.modal{padding:17px}.modal-grid{grid-template-columns:1fr}.topbar nav .btn-small{padding:6px 8px}.section-head{align-items:flex-start}.qr-card img{width:220px}}

/* Private student QR links: large, legible cards for classroom printing and tablet scanning */
.personal-qr-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:16px}
.personal-qr{display:flex;flex-direction:column;align-items:center;gap:9px;background:#faf7ff;border:1px solid #e5ddef;border-radius:18px;padding:12px;min-width:0;text-align:center}
.personal-qr-heading{display:flex;align-items:center;gap:8px;min-height:40px;font-size:.94rem;color:#53436c}
.personal-qr-heading img{width:36px;height:36px;border-radius:8px;object-fit:cover}
.personal-qr-image{width:100%;max-width:160px;aspect-ratio:1;background:#fff;border-radius:10px;object-fit:contain;padding:5px}
.personal-qr .btn{width:100%}
.student-link{font-size:.78rem;overflow-wrap:anywhere;text-decoration:underline}
@media(max-width:900px){.personal-qr-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:560px){.personal-qr-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media print{.topbar,.hero,.tabs,.progress-list,.qr-card,.personal-qr .btn{display:none!important}.personal-qr-grid{grid-template-columns:repeat(5,1fr)}.personal-qr{break-inside:avoid}.personal-qr-heading{font-size:11pt}}