/* Thème commun Karuta (laque façon jūbako) : laque noire, intérieur vermillon, filet doré.
   Toutes les pages du site partagent ce fichier. */
:root{
  --bg:#0b0807; --lacquer:#16110f; --lacquer-2:#1e1714; --line:#33251f; --gold-line:rgba(201,164,92,.38);
  --ink:#f3ebe0; --muted:#b2a495; --faint:#7d6f63;
  --red:#a8231a; --red-hi:#d4412f; --red-deep:#5c100c;
  --gold:#c9a45c; --gold-hi:#e2c27f;
  --good:#c9a45c; --again:#d4412f;
  --f-kana:"Klee One","Zen Maru Gothic","Hiragino Mincho ProN","Noto Serif JP",serif;
  --f-round:"Zen Maru Gothic","Hiragino Maru Gothic ProN","Noto Sans JP",sans-serif;
  --f-body:"Atkinson Hyperlegible",system-ui,sans-serif;
  --radius:16px;
  color-scheme:dark;
}
*{box-sizing:border-box}
[hidden]{display:none!important}
html,body{margin:0}
body{
  min-height:100vh;color:var(--ink);font-family:var(--f-body);font-size:16px;line-height:1.5;
  background:
    radial-gradient(900px 420px at 50% -160px,rgba(168,35,26,.28),transparent 70%),
    var(--bg);
  -webkit-tap-highlight-color:transparent;
}
a{color:var(--gold-hi)}
button,input{font:inherit}
button:focus-visible,input:focus-visible,a:focus-visible,.face:focus-visible,.chip:focus-within{outline:2px solid var(--gold);outline-offset:2px}

/* En-tête : bande vermillon comme le liseré d'un couvercle de jūbako */
.top{position:sticky;top:0;z-index:10;background:rgba(11,8,7,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.top::after{content:"";display:block;height:3px;background:linear-gradient(90deg,var(--red-deep),var(--red),var(--red-hi),var(--red),var(--red-deep))}
.top-in{max-width:760px;margin:0 auto;padding:10px 16px;display:flex;align-items:center;justify-content:space-between;gap:12px}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);text-decoration:none;font-weight:700;letter-spacing:.04em}
.mon{display:grid;place-items:center;width:34px;height:34px;border-radius:8px;background:var(--red);color:var(--ink);font-family:var(--f-kana);font-size:1.2rem;box-shadow:inset 0 0 0 1px var(--gold-line)}
.tabs{display:flex;gap:4px}
.tabs a{display:flex;align-items:center;gap:6px;color:var(--muted);text-decoration:none;font-weight:600;font-size:.92rem;padding:7px 12px;border-radius:999px}
.tabs a .ico{font-family:var(--f-kana);font-size:1rem}
.tabs a[aria-current="page"]{color:var(--ink);background:var(--lacquer-2);box-shadow:inset 0 0 0 1px var(--gold-line)}
/* Sur téléphone : barre d'onglets en bas, comme une appli */
@media (max-width:600px){
  .tabs{position:fixed;left:0;right:0;bottom:0;justify-content:space-around;background:rgba(11,8,7,.96);border-top:1px solid var(--line);padding:6px 8px calc(6px + env(safe-area-inset-bottom))}
  .tabs a{flex-direction:column;gap:0;font-size:.72rem;padding:4px 10px;border-radius:10px}
  .tabs a .ico{font-size:1.3rem}
  .tabs a[aria-current="page"]{color:var(--red-hi);background:none;box-shadow:none}
  body{padding-bottom:72px}
  .top{backdrop-filter:none;background:var(--bg)} /* sinon la barre fixe reste collée en haut */
}

.wrap{max-width:760px;margin:0 auto;padding:20px 16px 48px;display:flex;flex-direction:column;gap:22px}
.page-head h1{font-family:var(--f-kana);font-weight:600;font-size:1.9rem;margin:0;text-wrap:balance}
.page-head h1 small{display:block;font-family:var(--f-body);font-size:1rem;font-weight:400;color:var(--muted)}
.page-head p{margin:4px 0 0;color:var(--muted);max-width:60ch}
h2.sec{font-family:var(--f-kana);font-weight:600;font-size:1.25rem;margin:0;display:flex;align-items:center;gap:10px}
h2.sec::before{content:"";width:14px;height:14px;border-radius:3px;background:var(--red);box-shadow:inset 0 0 0 1px var(--gold-line)}

/* Contrôles segmentés */
.row{display:flex;gap:10px;flex-wrap:wrap}
.row .seg{flex:1;min-width:240px}
.seg{display:flex;background:var(--lacquer);border:1px solid var(--line);border-radius:999px;padding:4px;gap:4px}
.seg button{flex:1;border:0;background:none;color:var(--muted);font-weight:600;font-size:.95rem;padding:8px 10px;border-radius:999px;cursor:pointer}
.seg button[aria-pressed="true"]{background:linear-gradient(180deg,var(--red-hi),var(--red));color:var(--ink);box-shadow:inset 0 1px 0 rgba(255,255,255,.15)}

/* Boîte d'étude : laque noire avec filet doré */
.card{background:linear-gradient(180deg,var(--lacquer-2),var(--lacquer));border:1px solid var(--line);border-radius:20px;padding:18px;display:flex;flex-direction:column;gap:14px;box-shadow:0 0 0 1px rgba(0,0,0,.6),inset 0 0 0 4px var(--lacquer),inset 0 0 0 5px var(--gold-line),0 18px 40px -20px rgba(0,0,0,.9)}
.meta{display:flex;justify-content:space-between;font-size:.85rem;color:var(--muted);font-variant-numeric:tabular-nums}
.bar{height:6px;background:var(--red-deep);border-radius:6px;overflow:hidden}
.bar i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--gold),var(--gold-hi));transition:width .3s}

/* Face de carte : intérieur vermillon laqué avec reflet */
.face{all:unset;box-sizing:border-box;position:relative;overflow:hidden;cursor:pointer;width:100%;min-height:240px;border-radius:14px;
  background:linear-gradient(160deg,#b8291e 0%,#931c14 50%,#5c100c 100%);
  box-shadow:inset 0 0 0 1px rgba(226,194,127,.45),inset 0 -30px 60px -30px rgba(0,0,0,.6);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;text-align:center;padding:16px;color:var(--ink)}
.face::before{content:"";position:absolute;inset:0 0 55% 0;background:linear-gradient(180deg,rgba(255,255,255,.14),transparent);pointer-events:none}
.face>*{position:relative}
.face .hint,.face .sub{color:rgba(243,235,224,.75)}
.face .tag{font-size:.75rem;letter-spacing:.1em;text-transform:uppercase;color:var(--gold-hi)}
.hint{color:var(--muted);font-size:.85rem}

.actions{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:14px}
.actions button{border:0;border-radius:12px;padding:14px;font-weight:700;font-size:1rem;cursor:pointer}
.again{background:transparent;color:var(--red-hi);box-shadow:inset 0 0 0 1.5px var(--red-hi)}
.know{background:linear-gradient(180deg,var(--gold-hi),var(--gold));color:#1a120c}
.actions button:disabled{opacity:.3;cursor:default}

.done{text-align:center;display:flex;flex-direction:column;gap:10px;align-items:center;padding:20px 0}
.done h2{font-family:var(--f-kana);margin:0}
.ghost{border:1px solid var(--line);background:var(--lacquer);color:var(--ink);border-radius:10px;padding:8px 14px;font-weight:600;font-size:.9rem;cursor:pointer}
.ghost:hover{border-color:var(--gold-line)}

/* Puces de sélection */
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--line);background:var(--lacquer);color:var(--ink);border-radius:999px;padding:6px 12px;cursor:pointer;font-weight:600;font-size:.88rem;user-select:none}
.chip[aria-pressed="true"],.chip:has(input:checked){background:var(--red-deep);border-color:var(--red-hi)}
.chip input{accent-color:var(--red-hi);margin:0}
.chip .k{font-family:var(--f-round);font-size:1rem}
.chip .n{color:var(--muted);font-weight:400;font-variant-numeric:tabular-nums}
.tools{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.grp{font-size:.75rem;letter-spacing:.08em;text-transform:uppercase;color:var(--gold);margin:6px 0 2px;width:100%}

.panel{background:var(--lacquer);border:1px solid var(--line);border-radius:14px}
.note{font-size:.85rem;color:var(--muted);max-width:65ch;margin:0}
.foot{text-align:center;color:var(--faint);font-size:.8rem;padding:10px 0 0}

@media (prefers-reduced-motion:reduce){*{transition:none!important}}

/* Célébration : pétales de sakura, éclats dorés, texte 正解！ */
.fx-p{position:fixed;z-index:100;width:11px;height:8px;border-radius:100% 0 100% 0;pointer-events:none;will-change:transform,opacity}
.fx-p.fx-dot{width:6px;height:6px;border-radius:50%;box-shadow:0 0 6px currentColor}
.fx-txt{position:fixed;z-index:101;pointer-events:none;font-family:var(--f-kana);font-weight:600;font-size:1.6rem;color:var(--gold-hi);text-shadow:0 2px 0 var(--red-deep),0 0 14px rgba(226,194,127,.6);white-space:nowrap}
.fx-txt.big{font-size:2.3rem}
.fx-txt.calm{transform:translateX(-50%)}
/* Bouton son */
.snd{border:1px solid var(--line);background:var(--lacquer);border-radius:999px;width:36px;height:36px;font-size:1rem;cursor:pointer;flex:none;display:grid;place-items:center}
.snd:hover{border-color:var(--gold-line)}
@media (max-width:600px){.top-in .snd{margin-left:auto}}