:root { --ink:#1c211d; --muted:#737a72; --paper:#f8f7f2; --cream:#f0eee5; --lime:#dfff70; --yellow:#ffe77b; --line:#dcdcd3; --red:#b94d43; }
* { box-sizing:border-box; }
body { margin:0; color:var(--ink); background:var(--paper); font-family:"Noto Sans KR", sans-serif; }
button, input { font:inherit; }
button { cursor:pointer; }
.app-shell { width:min(100% - 40px, 760px); margin:0 auto; padding:28px 0 44px; }
header { display:flex; justify-content:space-between; align-items:center; }
.header-actions { display:flex; align-items:center; gap:13px; }
.list-link { display:inline-flex; align-items:center; gap:6px; padding:8px 11px; border:1px solid var(--ink); border-radius:7px; color:var(--ink); background:#fff; box-shadow:2px 2px 0 var(--lime); font-size:12px; font-weight:700; text-decoration:none; white-space:nowrap; transition:transform .15s ease, box-shadow .15s ease; }.list-link:hover { transform:translate(-1px,-1px); box-shadow:4px 4px 0 var(--lime); }.list-link span { font-size:15px; line-height:1; }
.brand { color:var(--ink); font-weight:800; text-decoration:none; letter-spacing:-.04em; display:flex; align-items:center; gap:9px; }
.brand-mark { width:31px; height:31px; display:grid; place-items:center; border:2px solid var(--ink); border-radius:50%; font-family:"Noto Sans JP"; font-size:17px; line-height:1; }
.streak { background:var(--yellow); border-radius:100px; padding:7px 12px; font-size:13px; }
.streak span { font-size:15px; }
.hero { padding:73px 0 38px; }
.eyebrow,.control-label,.prompt-label,.reveal-label { color:var(--muted); font-family:"DM Mono", monospace; font-size:11px; letter-spacing:.11em; margin:0; }
h1 { margin:12px 0 14px; font-size:clamp(38px, 8vw, 60px); line-height:1.16; letter-spacing:-.07em; }
h1 em { background:linear-gradient(transparent 58%, var(--lime) 58%); font-style:normal; }
.hero > p:last-child { color:var(--muted); font-size:15px; margin:0; }
.controls { display:flex; gap:20px; justify-content:space-between; align-items:end; margin-bottom:18px; }
.level-buttons { display:flex; flex-wrap:wrap; gap:5px; margin-top:8px; }
.level-btn { padding:6px 10px; background:transparent; border:1px solid var(--line); color:var(--muted); border-radius:6px; font-family:"DM Mono",monospace; font-size:12px; }
.level-btn:hover,.level-btn.active { background:var(--ink); border-color:var(--ink); color:white; }
.only-useful { flex:none; padding:8px 0; color:var(--muted); font-size:12px; cursor:pointer; white-space:nowrap; }
.only-useful input { accent-color:var(--ink); vertical-align:-2px; }
.quiz-card { background:#fff; padding:28px; border:1px solid var(--line); border-radius:18px; box-shadow:6px 7px 0 var(--cream); }
.card-topline { display:flex; justify-content:space-between; color:var(--muted); font-family:"DM Mono",monospace; font-size:11px; letter-spacing:.07em; }
#level-badge { background:var(--lime); color:var(--ink); padding:4px 7px; border-radius:4px; font-weight:500; }
.prompt-area { padding:42px 0 30px; }
.prompt-label { margin-bottom:10px; }
h2 { margin:0; font-size:clamp(26px, 5vw, 38px); line-height:1.25; letter-spacing:-.05em; word-break:keep-all; }
.english-gloss { margin:9px 0 0; color:var(--muted); font-family:"DM Mono", monospace; font-size:12px; line-height:1.5; }
.part-of-speech { min-height:19px; margin:10px 0 0; color:var(--muted); font-size:13px; }
#answer-form { display:flex; gap:8px; }
#answer { min-width:0; flex:1; border:1px solid #bfc3b9; border-radius:8px; padding:13px 14px; font-family:"Noto Sans JP","Noto Sans KR",sans-serif; font-size:17px; outline:none; }
#answer:focus { border:2px solid var(--ink); padding:12px 13px; }
#answer:disabled { background:#f3f3ef; }
#check-button,.next-button { border:0; border-radius:8px; background:var(--ink); color:white; padding:0 17px; font-weight:700; }
#check-button:disabled,.next-button:disabled,.text-button:disabled { opacity:.38; cursor:default; }
.feedback { min-height:22px; margin:12px 0 0; font-size:13px; font-weight:700; }
.feedback.correct { color:#31703c; }.feedback.incorrect { color:var(--red); }
.answer-reveal { margin-top:8px; padding:18px; background:var(--cream); border-radius:10px; display:grid; grid-template-columns:1fr 1.4fr; gap:25px; }
.reveal-label { display:block; margin-bottom:4px; }
#japanese-word { display:block; font-family:"Noto Sans JP"; font-size:26px; letter-spacing:-.03em; }
#romanization { color:var(--muted); font-size:13px; }
.example p { margin:3px 0 0; font-size:13px; line-height:1.5; }.example p:last-child { color:var(--muted); }
.card-actions { display:flex; justify-content:space-between; align-items:center; margin-top:22px; }
.text-button { padding:8px 0; border:0; background:transparent; color:var(--muted); text-decoration:underline; text-underline-offset:3px; font-size:13px; }
.next-button { padding:11px 15px; }.next-button span { padding-left:9px; font-size:18px; }
.footer-note { margin:25px 0 0; text-align:center; color:var(--muted); font-size:11px; }
.list-hero { padding:65px 0 27px; }.list-hero h1 { margin-bottom:8px; }.list-hero > p:last-child { color:var(--muted); margin:0; font-size:14px; }
.list-tools { display:flex; gap:9px; margin:0 0 17px; }.list-tools input { flex:1; min-width:0; padding:13px 14px 13px 40px; border:1px solid var(--line); border-radius:10px; background:#fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='17' height='17' viewBox='0 0 24 24' fill='none' stroke='%23737a72' stroke-width='2'%3E%3Ccircle cx='11' cy='11' r='7'/%3E%3Cpath d='m20 20-4-4'/%3E%3C/svg%3E") no-repeat 14px center; outline:none; box-shadow:0 3px 0 var(--cream); }.list-tools input:focus { border-color:var(--ink); }
.list-count { display:inline-block; margin:0 0 13px; padding:5px 8px; border-radius:5px; background:var(--cream); color:var(--muted); font-family:"DM Mono",monospace; font-size:11px; }.vocabulary-list { list-style:none; padding:0; margin:0; display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:10px; }.vocabulary-list li { min-width:0; padding:17px; background:#fff; border:1px solid var(--line); border-radius:12px; box-shadow:3px 4px 0 var(--cream); transition:transform .15s ease, box-shadow .15s ease; }.vocabulary-list li:hover { transform:translate(-1px,-2px); box-shadow:5px 6px 0 var(--lime); }.list-word-block { display:flex; align-items:flex-start; gap:10px; }.list-word { font-family:"Noto Sans JP"; font-size:25px; line-height:1.2; font-weight:600; letter-spacing:-.04em; }.list-reading { display:block; margin-top:6px; color:var(--muted); font-family:"Noto Sans JP"; font-size:12px; }.list-level { margin-left:auto; flex:none; padding:4px 6px; color:var(--ink); background:var(--lime); border-radius:4px; font-family:"DM Mono",monospace; font-size:10px; }.list-meaning { display:block; margin-top:18px; padding-top:12px; border-top:1px solid var(--cream); font-size:15px; font-weight:600; word-break:keep-all; }.list-meaning small { display:block; margin-top:4px; color:var(--muted); font-family:"DM Mono",monospace; font-size:10px; font-weight:400; line-height:1.45; }.empty-list { grid-column:1 / -1; padding:35px !important; text-align:center; color:var(--muted); background:#fff; border:1px solid var(--line); border-radius:12px; }
.sr-only { position:absolute; width:1px; height:1px; overflow:hidden; clip:rect(0,0,0,0); }
@media (max-width:560px) { .app-shell { width:min(100% - 28px, 760px); padding-top:18px; }.header-actions { gap:7px; }.list-link { padding:7px 8px; font-size:11px; }.hero { padding:54px 0 30px; }.controls { display:block; }.only-useful { display:block; margin-top:10px; }.quiz-card { padding:20px; border-radius:14px; }.prompt-area { padding:34px 0 25px; }.answer-reveal { grid-template-columns:1fr; gap:17px; } #check-button { padding:0 13px; font-size:13px; }.list-hero { padding:48px 0 24px; }.vocabulary-list { grid-template-columns:1fr; } }