:root {
  --bg: #0f0e17;
  --surface: #1a1825;
  --card: #1e1c2e;
  --card2: #261f38;
  --border: #2a2740;
  --accent: #e8c547;
  --accent2: #ff6b6b;
  --accent3: #7ec8e3;
  --text: #e8e6f0;
  --muted: #6b6882;
  --n5: #4ade80; --n4: #60a5fa; --n3: #f59e0b; --n2: #f97316; --n1: #ef4444;
  --srs-0: #4b5563; --srs-1: #3b82f6; --srs-2: #f59e0b; --srs-3: #4ade80; --srs-4: #a78bfa;
}
* { margin:0; padding:0; box-sizing:border-box; }
html, body { height:100%; }
body {
  font-family: 'Noto Sans JP', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
}
body::before {
  content:''; position:fixed; inset:0;
  background-image: linear-gradient(rgba(232,197,71,0.025) 1px, transparent 1px), linear-gradient(90deg, rgba(232,197,71,0.025) 1px, transparent 1px);
  background-size: 44px 44px; pointer-events:none; z-index:0;
}

/* ─── SCREENS ─── */
.screen { position:relative; z-index:1; min-height:100vh; display:flex; flex-direction:column; }
.hidden { display:none !important; }

/* ─── HOME ─── */
.home-header { padding:40px 36px 0; text-align:center; }
.logo { font-family:'Noto Serif JP',serif; font-size:48px; color:var(--accent); letter-spacing:-2px; text-shadow:0 0 40px rgba(232,197,71,0.25); line-height:1; }
.logo-sub { font-size:11px; letter-spacing:6px; color:var(--muted); text-transform:uppercase; margin-top:6px; }
.home-body { flex:1; padding:28px 28px 120px; max-width:680px; margin:0 auto; width:100%; }

/* SRS stats overview */
.srs-overview { display:flex; gap:8px; margin-bottom:24px; flex-wrap:wrap; }
.srs-stat-pill {
  flex:1; min-width:80px;
  background:var(--surface); border:1.5px solid var(--border);
  border-radius:12px; padding:10px 8px; text-align:center;
  cursor:pointer; transition:all 0.15s;
}
.srs-stat-pill:hover { border-color:rgba(232,197,71,0.3); background:var(--card); transform:translateY(-1px); }
.srs-stat-num { font-family:'Space Mono',monospace; font-size:20px; font-weight:700; line-height:1; }
.srs-stat-label { font-size:10px; color:var(--muted); margin-top:3px; letter-spacing:1px; }

/* category tabs */
.cat-tabs { display:flex; gap:6px; margin-bottom:24px; background:var(--surface); border-radius:14px; padding:5px; border:1px solid var(--border); }
.cat-tab { flex:1; padding:10px 8px; border-radius:10px; border:none; background:transparent; color:var(--muted); font-size:13px; font-family:'Noto Sans JP',sans-serif; cursor:pointer; transition:all 0.2s; font-weight:500; }
.cat-tab.active { background:var(--card2); color:var(--accent); }
.cat-tab:hover:not(.active) { color:var(--text); }

/* level pills */
.section-label { font-size:10px; letter-spacing:3px; color:var(--muted); text-transform:uppercase; margin-bottom:10px; }
.level-pills { display:flex; gap:6px; flex-wrap:wrap; margin-bottom:24px; }
.level-pill { padding:7px 16px; border-radius:100px; border:1.5px solid var(--border); background:transparent; color:var(--muted); font-size:12px; font-family:'Space Mono',monospace; cursor:pointer; transition:all 0.15s; font-weight:700; }
.level-pill[data-lv="N5"].active { color:var(--n5); border-color:var(--n5); background:rgba(74,222,128,0.1); }
.level-pill[data-lv="N4"].active { color:var(--n4); border-color:var(--n4); background:rgba(96,165,250,0.1); }
.level-pill[data-lv="N3"].active { color:var(--n3); border-color:var(--n3); background:rgba(245,158,11,0.1); }
.level-pill[data-lv="N2"].active { color:var(--n2); border-color:var(--n2); background:rgba(249,115,22,0.1); }
.level-pill[data-lv="N1"].active { color:var(--n1); border-color:var(--n1); background:rgba(239,68,68,0.1); }
.level-pill[data-lv="ALL"].active { color:var(--accent); border-color:var(--accent); background:rgba(232,197,71,0.1); }
.level-pill:hover:not(.active) { color:var(--text); border-color:var(--text); }

/* study modes */
.mode-section { margin-bottom:24px; }
.mode-cards { display:flex; gap:10px; flex-direction:column; }
.mode-card {
  background:var(--surface); border:1.5px solid var(--border);
  border-radius:14px; padding:16px 18px;
  display:flex; align-items:center; gap:14px;
  cursor:pointer; transition:all 0.2s;
}
.mode-card:hover { border-color:var(--accent); background:var(--card); transform:translateX(2px); }
.mode-card.mode-review:hover { border-color:var(--n4); }
.mode-card.mode-new:hover { border-color:var(--n5); }
.mode-icon { font-size:24px; width:40px; text-align:center; flex-shrink:0; }
.mode-info { flex:1; }
.mode-title { font-size:14px; font-weight:600; margin-bottom:2px; }
.mode-desc { font-size:11px; color:var(--muted); }
.mode-badge {
  font-family:'Space Mono',monospace; font-size:14px; font-weight:700;
  padding:4px 12px; border-radius:100px; flex-shrink:0;
}
.badge-review { background:rgba(96,165,250,0.15); color:var(--n4); }
.badge-new { background:rgba(74,222,128,0.15); color:var(--n5); }
.badge-free { background:rgba(232,197,71,0.15); color:var(--accent); }

/* options row */
.opts-row { display:flex; gap:10px; margin-bottom:20px; }
.opt-box { flex:1; background:var(--surface); border:1.5px solid var(--border); border-radius:12px; padding:12px 14px; }
.opt-box label { font-size:10px; letter-spacing:2px; color:var(--muted); text-transform:uppercase; display:block; margin-bottom:8px; }
.opt-box select, .opt-box input[type=number] { width:100%; background:var(--card); border:1px solid var(--border); color:var(--text); padding:8px 10px; border-radius:8px; font-size:13px; font-family:'Noto Sans JP',sans-serif; }

/* ─── BOTTOM NAV ─── */
.bottom-nav {
  position:fixed; bottom:0; left:0; right:0; z-index:100;
  background:rgba(15,14,23,0.95); backdrop-filter:blur(12px);
  border-top:1px solid var(--border);
  display:flex; padding:8px 16px 20px;
  gap:8px;
}
.nav-btn {
  flex:1; padding:10px 8px; border-radius:12px; border:none;
  background:transparent; color:var(--muted);
  font-size:11px; letter-spacing:1px; text-transform:uppercase;
  cursor:pointer; transition:all 0.2s;
  display:flex; flex-direction:column; align-items:center; gap:4px;
}
.nav-btn .nav-icon { font-size:20px; }
.nav-btn.active { color:var(--accent); background:rgba(232,197,71,0.08); }
.nav-btn:hover:not(.active) { color:var(--text); }

/* ─── LIST SCREEN ─── */
.list-header { padding:20px 20px 0; display:flex; align-items:center; gap:12px; }
.list-title { font-family:'Noto Serif JP',serif; font-size:18px; font-weight:700; }
.list-count { font-family:'Space Mono',monospace; font-size:12px; color:var(--muted); }
.search-wrap { padding:14px 20px 10px; position:relative; }
.search-input {
  width:100%; background:var(--surface); border:1.5px solid var(--border);
  border-radius:12px; padding:11px 16px 11px 40px;
  color:var(--text); font-size:14px; font-family:'Noto Sans JP',sans-serif;
  outline:none; transition:border-color 0.2s;
}
.search-input:focus { border-color:rgba(232,197,71,0.4); }
.search-icon { position:absolute; left:32px; top:50%; transform:translateY(-50%); color:var(--muted); font-size:16px; pointer-events:none; }
.list-filters { padding:0 16px 12px; overflow-x:auto; -webkit-overflow-scrolling:touch; }
.filter-row { display:flex; gap:6px; width:max-content; padding:2px; }
.filter-pill {
  padding:5px 14px; border-radius:100px; border:1.5px solid var(--border);
  background:transparent; color:var(--muted); font-size:11px;
  font-family:'Space Mono',monospace; cursor:pointer; transition:all 0.15s;
  white-space:nowrap; font-weight:700; flex-shrink:0;
}
.filter-pill.active { border-color:currentColor; }
.fp-srs-0.active { color:#9ca3af; background:rgba(156,163,175,0.1); }
.fp-srs-1.active { color:var(--srs-1); background:rgba(59,130,246,0.1); }
.fp-srs-2.active { color:var(--srs-2); background:rgba(245,158,11,0.1); }
.fp-srs-3.active { color:var(--srs-3); background:rgba(74,222,128,0.1); }
.fp-srs-4.active { color:var(--srs-4); background:rgba(167,139,250,0.1); }
.fp-all.active { color:var(--accent); background:rgba(232,197,71,0.1); }
.filter-divider { width:1px; background:var(--border); margin:0 4px; flex-shrink:0; }
.filter-pill[data-lv="N5"].active { color:var(--n5); border-color:var(--n5); background:rgba(74,222,128,0.1); }
.filter-pill[data-lv="N4"].active { color:var(--n4); border-color:var(--n4); background:rgba(96,165,250,0.1); }
.filter-pill[data-lv="N3"].active { color:var(--n3); border-color:var(--n3); background:rgba(245,158,11,0.1); }
.filter-pill[data-lv="N2"].active { color:var(--n2); border-color:var(--n2); background:rgba(249,115,22,0.1); }
.filter-pill[data-lv="N1"].active { color:var(--n1); border-color:var(--n1); background:rgba(239,68,68,0.1); }

/* list items */
.list-body { flex:1; overflow-y:auto; padding:0 16px; padding-bottom:100px; }
.list-item {
  display:flex; align-items:center; gap:12px;
  padding:11px 14px; border-radius:12px; margin-bottom:6px;
  background:var(--surface); border:1.5px solid var(--border);
  cursor:pointer; transition:all 0.15s;
}
.list-item:hover { border-color:rgba(232,197,71,0.25); background:var(--card); }
.li-srs { width:8px; height:8px; border-radius:50%; flex-shrink:0; }
.li-word { font-family:'Noto Serif JP',serif; font-size:18px; font-weight:700; min-width:50px; }
.li-reading { font-size:12px; color:var(--accent); font-family:'Noto Serif JP',serif; min-width:60px; }
.li-mean { flex:1; font-size:12px; color:var(--muted); overflow:hidden; white-space:nowrap; text-overflow:ellipsis; }
.li-badges { display:flex; gap:4px; flex-shrink:0; }
.li-badge { font-family:'Space Mono',monospace; font-size:9px; font-weight:700; padding:2px 7px; border-radius:100px; }
.li-badge-srs { display:inline-block; }
.li-badge-lv { display:inline-block; }

/* pagination */
.pagination { display:flex; align-items:center; justify-content:center; gap:8px; padding:16px; padding-bottom:90px; }
.page-btn { padding:7px 14px; border-radius:8px; border:1.5px solid var(--border); background:var(--surface); color:var(--text); font-family:'Space Mono',monospace; font-size:12px; cursor:pointer; transition:all 0.15s; }
.page-btn:hover:not(:disabled) { border-color:var(--accent); color:var(--accent); }
.page-btn:disabled { opacity:0.3; cursor:default; }
.page-info { font-family:'Space Mono',monospace; font-size:12px; color:var(--muted); }

/* ─── STUDY SCREEN ─── */
#study-screen { position:fixed; inset:0; min-height:unset; overflow:hidden; }
.study-header { flex-shrink:0; background:var(--bg); border-bottom:1px solid var(--border); padding-bottom:8px; z-index:10; }
.study-top { padding:16px 16px 0; display:flex; align-items:center; gap:10px; }
.back-btn { background:var(--surface); border:1px solid var(--border); color:var(--text); width:34px; height:34px; border-radius:10px; cursor:pointer; font-size:16px; display:flex; align-items:center; justify-content:center; transition:background 0.2s; flex-shrink:0; }
.back-btn:hover { background:var(--card); }
.progress-wrap { flex:1; height:5px; background:var(--border); border-radius:100px; overflow:hidden; }
.progress-bar { height:100%; background:linear-gradient(90deg, var(--accent), var(--accent2)); border-radius:100px; transition:width 0.4s; }
.progress-count { font-family:'Space Mono',monospace; font-size:11px; color:var(--muted); white-space:nowrap; }
.settings-btn { background:var(--surface); border:1px solid var(--border); color:var(--text); width:34px; height:34px; border-radius:10px; cursor:pointer; font-size:16px; display:flex; align-items:center; justify-content:center; transition:background 0.2s; flex-shrink:0; }
.settings-btn:hover { background:var(--card); }
.study-mode-label { font-size:10px; color:var(--muted); text-align:center; letter-spacing:2px; text-transform:uppercase; padding:8px 0 0; }
.card-area { flex:1; overflow-y:auto; min-height:0; padding:14px 20px 120px; display:flex; flex-direction:column; align-items:center; }
.card-actions-fixed {
  position:fixed; bottom:0; left:0; right:0; z-index:50;
  padding:12px 20px 28px;
  background:linear-gradient(to top, var(--bg) 70%, transparent);
  display:flex; flex-direction:column; gap:8px; align-items:center;
}
.card-actions { display:flex; gap:12px; width:100%; max-width:460px; }
.card-actions.srs-4btn { gap:8px; }
.card-top-row { display:flex; align-items:center; gap:10px; margin-bottom:14px; width:100%; max-width:460px; }
.card-badge { font-family:'Space Mono',monospace; font-size:11px; font-weight:700; padding:3px 12px; border-radius:100px; letter-spacing:1px; }
.badge-N5 { background:rgba(74,222,128,0.15); color:var(--n5); }
.badge-N4 { background:rgba(96,165,250,0.15); color:var(--n4); }
.badge-N3 { background:rgba(245,158,11,0.15); color:var(--n3); }
.badge-N2 { background:rgba(249,115,22,0.15); color:var(--n2); }
.badge-N1 { background:rgba(239,68,68,0.15); color:var(--n1); }
.card-wrapper { width:100%; max-width:460px; cursor:pointer; }
.card-inner { width:100%; }
.card-face {
  background:var(--card); border:1.5px solid var(--border); border-radius:22px;
  padding:32px 28px; min-height:200px; display:flex; flex-direction:column;
  align-items:center; justify-content:center;
  box-shadow:0 16px 44px rgba(0,0,0,0.45);
  position:relative; overflow:hidden;
  animation: cardIn 0.22s ease;
}
@keyframes cardIn { from { opacity:0; transform:translateY(8px) scale(0.99); } to { opacity:1; transform:none; } }
.card-face::before { content:''; position:absolute; inset:0; background:radial-gradient(ellipse at 65% 35%, rgba(232,197,71,0.045) 0%, transparent 65%); pointer-events:none; }
.card-back { display:none; background:var(--card2); border-color:rgba(232,197,71,0.2); }
.card-inner.flipped .card-front { display:none; }
.card-inner.flipped .card-back { display:flex; }
.card-hint { font-size:10px; letter-spacing:2px; color:var(--muted); text-transform:uppercase; margin-bottom:16px; }
.card-word { font-family:'Noto Serif JP',serif; font-size:48px; font-weight:700; color:var(--text); text-align:center; line-height:1.2; margin-bottom:8px; }
.card-reading { font-size:20px; color:var(--accent); font-family:'Noto Serif JP',serif; text-align:center; }
.card-mean-main { font-size:22px; color:var(--text); text-align:center; margin-bottom:14px; font-weight:500; line-height:1.5; }
.card-meanings { display:flex; flex-direction:column; gap:5px; width:100%; }
.card-meaning-item { background:rgba(255,255,255,0.04); border-radius:8px; padding:7px 12px; font-size:12px; color:var(--muted); text-align:center; }
.kanji-big { font-family:'Noto Serif JP',serif; font-size:88px; font-weight:700; color:var(--text); line-height:1; margin-bottom:10px; text-shadow:0 0 40px rgba(232,197,71,0.12); }
.kanji-strokes { font-family:'Space Mono',monospace; font-size:10px; color:var(--muted); }
.kanji-readings { display:flex; gap:16px; margin-bottom:14px; flex-wrap:wrap; justify-content:center; }
.reading-group { text-align:center; }
.reading-label { font-size:9px; letter-spacing:2px; color:var(--muted); text-transform:uppercase; margin-bottom:3px; }
.reading-value { font-size:14px; color:var(--accent3); }
.kanji-examples { display:flex; flex-direction:column; gap:5px; width:100%; }
.kanji-ex-item { background:rgba(255,255,255,0.04); border-radius:8px; padding:7px 12px; display:flex; justify-content:space-between; align-items:center; font-size:12px; }
.kanji-ex-word { color:var(--text); font-family:'Noto Serif JP',serif; }
.kanji-ex-mean { color:var(--muted); font-size:11px; }
.grammar-key { font-family:'Space Mono',monospace; font-size:26px; color:var(--accent); text-align:center; margin-bottom:8px; font-weight:700; }
.grammar-struct { font-size:12px; color:var(--muted); text-align:center; background:rgba(255,255,255,0.04); border-radius:8px; padding:9px 14px; width:100%; margin-top:10px; }
.grammar-examples { display:flex; flex-direction:column; gap:7px; width:100%; }
.grammar-ex-item { background:rgba(255,255,255,0.04); border-radius:8px; padding:9px 12px; }
.grammar-ex-jp { font-size:14px; color:var(--text); margin-bottom:3px; font-family:'Noto Serif JP',serif; }
.grammar-ex-vn { font-size:12px; color:var(--muted); }

.flip-hint { font-size:10px; color:var(--muted); text-align:center; margin-top:10px; letter-spacing:1px; }

/* SRS Level Dots */
.srs-level-dots { display:flex; gap:5px; align-items:center; }
.srs-dot {
  width:10px; height:10px; border-radius:50%;
  background:var(--border); border:1.5px solid rgba(255,255,255,0.08);
  transition:all 0.25s;
}
.srs-dot-filled { border-color:transparent; }
.srs-dot-lv-0 { background:#9ca3af; }
.srs-dot-lv-1 { background:var(--srs-1); }
.srs-dot-lv-2 { background:var(--srs-2); }
.srs-dot-lv-3 { background:var(--srs-3); }
.srs-dot-lv-4 { background:var(--srs-4); }

/* 4-button SRS actions */
.srs-btn {
  flex:1; display:flex; flex-direction:column; align-items:center; gap:2px;
  padding:10px 4px 8px; border-radius:14px; border:1.5px solid;
  font-family:'Noto Sans JP',sans-serif; cursor:pointer;
  transition:all 0.18s; position:relative; min-width:0;
}
.srs-btn:hover { transform:translateY(-2px); filter:brightness(1.15); }
.srs-btn:active { transform:scale(0.96); }
.srs-btn-hint {
  font-family:'Space Mono',monospace; font-size:10px; font-weight:700;
  opacity:0.85; letter-spacing:0.5px;
}
.srs-btn-label { font-size:12px; font-weight:600; letter-spacing:0.3px; }
.srs-btn-key {
  position:absolute; top:3px; right:5px;
  font-family:'Space Mono',monospace; font-size:8px; font-weight:700;
  opacity:0.35; line-height:1;
}
.srs-btn-again {
  background:rgba(255,107,107,0.1); border-color:rgba(255,107,107,0.35);
  color:#f87171;
}
.srs-btn-again:hover { background:rgba(255,107,107,0.18); border-color:#f87171; }
.srs-btn-hard {
  background:rgba(251,191,36,0.1); border-color:rgba(251,191,36,0.35);
  color:#fbbf24;
}
.srs-btn-hard:hover { background:rgba(251,191,36,0.18); border-color:#fbbf24; }
.srs-btn-good {
  background:rgba(74,222,128,0.1); border-color:rgba(74,222,128,0.35);
  color:#4ade80;
}
.srs-btn-good:hover { background:rgba(74,222,128,0.18); border-color:#4ade80; }
.srs-btn-easy {
  background:rgba(96,165,250,0.1); border-color:rgba(96,165,250,0.35);
  color:#60a5fa;
}
.srs-btn-easy:hover { background:rgba(96,165,250,0.18); border-color:#60a5fa; }

/* ─── RESULT ─── */
.result-screen { min-height:100vh; display:flex; flex-direction:column; align-items:center; justify-content:center; padding:40px; text-align:center; }
.result-emoji { font-size:60px; margin-bottom:14px; }
.result-title { font-family:'Noto Serif JP',serif; font-size:28px; color:var(--accent); margin-bottom:6px; }
.result-sub { color:var(--muted); font-size:13px; margin-bottom:32px; }
.result-stats { display:flex; gap:16px; justify-content:center; margin-bottom:32px; flex-wrap:wrap; }
.stat-card { background:var(--surface); border:1.5px solid var(--border); border-radius:14px; padding:20px 24px; min-width:100px; }
.stat-num { font-family:'Space Mono',monospace; font-size:32px; font-weight:700; }
.stat-num.green { color:var(--n5); } .stat-num.red { color:var(--accent2); }
.stat-label { font-size:11px; color:var(--muted); margin-top:3px; letter-spacing:1px; }
.result-btns { display:flex; gap:10px; flex-wrap:wrap; justify-content:center; }
.result-btn { padding:12px 22px; border-radius:12px; border:1.5px solid var(--border); background:var(--surface); color:var(--text); font-size:13px; cursor:pointer; font-family:'Noto Sans JP',sans-serif; transition:all 0.18s; }
.result-btn.primary { background:var(--accent); border-color:var(--accent); color:var(--bg); font-weight:700; }
.result-btn:hover { opacity:0.82; transform:translateY(-1px); }

/* ─── DETAIL MODAL ─── */
.modal-overlay {
  position:fixed; inset:0; z-index:200;
  background:rgba(10,9,16,0.85); backdrop-filter:blur(6px);
  display:flex; align-items:flex-end; justify-content:center;
  padding:20px 16px;
  animation:fadeIn 0.2s;
}
.modal-overlay.hidden { display:none !important; }
@keyframes fadeIn { from { opacity:0; } to { opacity:1; } }
.modal-box {
  background:var(--surface); border:1.5px solid var(--border);
  border-radius:24px 24px 16px 16px;
  width:100%; max-width:500px; max-height:85vh;
  overflow-y:auto; padding:28px 24px 32px;
  animation:slideUp 0.25s cubic-bezier(0.4,0,0.2,1);
}
@keyframes slideUp { from { transform:translateY(30px); opacity:0; } to { transform:translateY(0); opacity:1; } }
.modal-header { display:flex; justify-content:space-between; align-items:flex-start; margin-bottom:20px; }
.modal-close { background:var(--card); border:1px solid var(--border); color:var(--muted); width:32px; height:32px; border-radius:8px; cursor:pointer; font-size:16px; display:flex; align-items:center; justify-content:center; }
.modal-main-word { font-family:'Noto Serif JP',serif; font-size:42px; font-weight:700; color:var(--text); line-height:1.1; }
.modal-reading { font-size:16px; color:var(--accent); font-family:'Noto Serif JP',serif; margin-top:4px; }
.modal-mean { font-size:16px; color:var(--text); margin-bottom:16px; line-height:1.6; }
.modal-section-label { font-size:10px; letter-spacing:2px; color:var(--muted); text-transform:uppercase; margin-bottom:8px; }
.modal-srs-bar { display:flex; gap:6px; margin-bottom:20px; flex-wrap:wrap; }
.modal-srs-item { flex:1; min-width:70px; border-radius:10px; padding:10px 8px; text-align:center; border:1.5px solid; }
.modal-srs-val { font-family:'Space Mono',monospace; font-size:14px; font-weight:700; }
.modal-srs-lbl { font-size:9px; color:var(--muted); margin-top:3px; letter-spacing:1px; text-transform:uppercase; }
.modal-examples { display:flex; flex-direction:column; gap:7px; }
.modal-ex-item { background:rgba(255,255,255,0.04); border-radius:10px; padding:11px 14px; }
.modal-ex-jp { font-family:'Noto Serif JP',serif; font-size:14px; color:var(--text); margin-bottom:4px; }
.modal-ex-vn { font-size:12px; color:var(--muted); }
.modal-kanji-readings { display:flex; gap:20px; margin-bottom:16px; }
.modal-read-group { display:flex; flex-direction:column; }
.modal-read-lbl { font-size:10px; color:var(--muted); letter-spacing:2px; text-transform:uppercase; margin-bottom:4px; }
.modal-read-val { font-size:15px; color:var(--accent3); }
.modal-study-btn { width:100%; margin-top:20px; padding:12px; border-radius:12px; background:var(--accent); border:none; color:var(--bg); font-weight:700; font-size:14px; font-family:'Noto Sans JP',sans-serif; cursor:pointer; transition:opacity 0.2s; }
.modal-study-btn:hover { opacity:0.88; }

/* ─── SRS LEVEL DISPLAY ─── */
.srs-lv-0 { color:#9ca3af; } .srs-lv-1 { color:var(--srs-1); } .srs-lv-2 { color:var(--srs-2); } .srs-lv-3 { color:var(--srs-3); } .srs-lv-4 { color:var(--srs-4); }
.dot-0 { background:#4b5563; } .dot-1 { background:var(--srs-1); } .dot-2 { background:var(--srs-2); } .dot-3 { background:var(--srs-3); } .dot-4 { background:var(--srs-4); }
.srs-tag-0 { background:rgba(75,85,99,0.2); color:#9ca3af; }
.srs-tag-1 { background:rgba(59,130,246,0.15); color:var(--srs-1); }
.srs-tag-2 { background:rgba(245,158,11,0.15); color:var(--srs-2); }
.srs-tag-3 { background:rgba(74,222,128,0.15); color:var(--srs-3); }
.srs-tag-4 { background:rgba(167,139,250,0.15); color:var(--srs-4); }

/* ─── FURIGANA TOGGLE ─── */
.furigana-toggle {
  display:inline-flex; align-items:center; gap:6px;
  font-size:11px; color:var(--muted); cursor:pointer;
  background:var(--surface); border:1px solid var(--border);
  border-radius:100px; padding:4px 10px; margin-bottom:8px;
  transition:all 0.15s; user-select:none;
}
.furigana-toggle:hover { color:var(--text); border-color:var(--accent3); }
.furigana-toggle.on { color:var(--accent3); border-color:var(--accent3); background:rgba(126,200,227,0.08); }

ruby { ruby-align:center; }
ruby rt { font-size:0.55em; color:var(--accent); opacity:1; transition:opacity 0.2s; }
.furigana-hidden ruby rt { opacity:0; pointer-events:none; }

.kanji-ex-item { background:rgba(255,255,255,0.04); border-radius:8px; padding:7px 12px; display:flex; justify-content:space-between; align-items:center; font-size:12px; }
.kanji-ex-word { color:var(--text); font-family:'Noto Serif JP',serif; }
.kanji-ex-mean { color:var(--muted); font-size:11px; }

/* card flip is now a toggle */
.card-inner.flipped .card-front { display:none; }
.card-inner.flipped .card-back { display:flex; }

/* ─── SETTINGS MODAL ─── */
.settings-section { margin-bottom:24px; }
.settings-item { margin-bottom:16px; }
.settings-label {
  display:flex; align-items:center; gap:10px;
  font-size:14px; color:var(--text); font-weight:500;
  cursor:pointer; user-select:none;
}
.settings-label input[type=checkbox] {
  width:18px; height:18px; accent-color:var(--accent);
  cursor:pointer;
}
.settings-desc {
  font-size:11px; color:var(--muted); margin-top:4px; margin-left:28px;
  line-height:1.4;
}
.settings-select {
  width:100%; background:var(--card); border:1px solid var(--border);
  color:var(--text); padding:8px 12px; border-radius:8px;
  font-size:13px; font-family:'Noto Sans JP',sans-serif;
  margin-top:6px;
}

/* ─── QUICK COUNT BUTTONS ─── */
.quick-count-row { display:flex; gap:6px; }
.qc-btn {
  flex:1; padding:7px 4px; border-radius:8px;
  border:1.5px solid var(--border); background:transparent;
  color:var(--muted); font-family:'Space Mono',monospace;
  font-size:13px; font-weight:700; cursor:pointer; transition:all 0.15s;
}
.qc-btn:hover { color:var(--text); border-color:var(--text); }
.qc-btn.active { background:rgba(232,197,71,0.12); border-color:var(--accent); color:var(--accent); }

/* ─── LIST ITEM QUICK STUDY ─── */
.list-item { position:relative; cursor:pointer; }
.li-info-btn {
  position:absolute; right:10px; top:50%; transform:translateY(-50%);
  background:rgba(255,255,255,0.07); border:1px solid var(--border);
  color:var(--muted); width:28px; height:28px; border-radius:8px;
  font-size:13px; cursor:pointer; display:flex; align-items:center;
  justify-content:center; flex-shrink:0; z-index:2;
  transition:background 0.15s;
}
.li-info-btn:hover { background:rgba(255,255,255,0.14); color:var(--text); }
.list-item:has(.li-info-btn) .li-badges { margin-right:38px; }

/* ─── QUICK STUDY PANEL ─── */
.qs-overlay {
  position:fixed; inset:0; z-index:200;
  background:rgba(0,0,0,0.55); backdrop-filter:blur(3px);
  display:flex; align-items:flex-end;
  transition:opacity 0.25s;
}
.qs-overlay.hidden { display:none; }
.qs-overlay.closing { opacity:0; }
.qs-panel {
  width:100%; max-height:85vh;
  background:var(--surface); border-radius:22px 22px 0 0;
  display:flex; flex-direction:column;
  transform:translateY(0); transition:transform 0.3s cubic-bezier(.32,1.2,.45,1);
  overflow:hidden;
}
.qs-overlay.entering .qs-panel { transform:translateY(100%); }
.qs-handle {
  width:40px; height:4px; background:var(--border);
  border-radius:100px; margin:12px auto 0; flex-shrink:0;
}
.qs-header {
  display:flex; align-items:center; gap:8px;
  padding:12px 18px 8px; flex-shrink:0;
}
.qs-body {
  flex:1; overflow-y:auto; padding:0 20px 16px;
}
.qs-word { font-family:'Noto Serif JP',serif; font-size:38px; font-weight:700; color:var(--text); line-height:1.2; margin-bottom:6px; }
.qs-reading { font-size:16px; color:var(--accent3); margin-bottom:12px; letter-spacing:1px; }
.qs-kanji { font-family:'Noto Serif JP',serif; font-size:64px; font-weight:700; color:var(--text); line-height:1; margin-bottom:4px; }
.qs-meaning { font-size:15px; color:var(--muted); margin-bottom:14px; line-height:1.6; }
.qs-meaning strong { color:var(--text); font-size:17px; }
.qs-section-label { font-size:10px; letter-spacing:2px; text-transform:uppercase; color:var(--muted); margin:14px 0 8px; }
.qs-divider { height:1px; background:var(--border); margin:12px 0; }
.qs-ex-item { padding:8px 0; border-bottom:1px solid rgba(255,255,255,0.04); }
.qs-ex-item:last-child { border-bottom:none; }
.qs-ex-jp { font-size:14px; color:var(--text); font-family:'Noto Serif JP',serif; line-height:1.6; }
.qs-ex-vn { font-size:12px; color:var(--muted); margin-top:2px; }
.qs-readings { display:flex; gap:10px; margin:10px 0; }
.qs-read-group { background:var(--card); border-radius:8px; padding:6px 12px; flex:1; }
.qs-read-lbl { font-size:9px; text-transform:uppercase; letter-spacing:1px; color:var(--muted); }
.qs-read-val { font-size:14px; color:var(--text); margin-top:2px; }
.qs-actions {
  display:flex; gap:10px; padding:12px 18px 30px; flex-shrink:0;
  background:var(--surface); border-top:1px solid var(--border);
}
.qs-btn {
  flex:1; height:50px; border-radius:14px; font-size:15px; font-weight:600;
  border:none; cursor:pointer; font-family:'Noto Sans JP',sans-serif;
  transition:opacity 0.15s, transform 0.1s;
}
.qs-btn:active { transform:scale(0.97); opacity:0.85; }
.qs-btn-no { background:rgba(239,68,68,0.15); color:#f87171; border:1px solid rgba(239,68,68,0.3); }
.qs-btn-yes { background:rgba(34,197,94,0.15); color:#4ade80; border:1px solid rgba(34,197,94,0.3); }

@media (max-width:480px) {
  .home-header { padding:28px 20px 0; }
  .home-body { padding:20px 16px 100px; }
  .logo { font-size:36px; }
  .card-word { font-size:38px; }
  .kanji-big { font-size:70px; }
  .opts-row { flex-direction:column; }
  .srs-btn { padding:8px 2px 6px; border-radius:12px; }
  .srs-btn-hint { font-size:9px; }
  .srs-btn-label { font-size:11px; }
  .card-actions-fixed { padding:10px 12px 24px; }
  .card-actions.srs-4btn { gap:6px; }
  .card-area { padding-bottom:110px; }
}