@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Shippori+Mincho:wght@500;700;800&display=swap');
:root{--ink:#1b2933;--muted:#6b7a85;--paper:#eef1f3;--panel:#fffdf9;--line:#dde3e7;--red:#bd473b;--teal:#005B8E;--gold:#3f8fb5;--dark:#0d3652;--shadow:0 18px 55px rgba(13,54,82,.12);--ui:'DM Sans',sans-serif;--display:'Shippori Mincho',serif}
*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}.auth-screen{width:min(100%,460px);margin:10vh auto 0;padding:30px}.auth-screen h2{font:700 1.8rem var(--display);margin:7px 0 8px}.auth-screen p{color:var(--muted);font-size:.85rem;margin-bottom:22px}.auth-form{display:grid;gap:12px}.auth-form label{font-size:.72rem;color:var(--muted);font-weight:700;letter-spacing:.08em;text-transform:uppercase}.auth-form input{width:100%;border:1px solid var(--line);background:#fff;border-radius:10px;padding:12px 13px;font:inherit;color:var(--ink)}.auth-form input:focus{outline:2px solid rgba(40,111,107,.25);border-color:var(--teal)}.auth-submit{border:0;background:var(--dark);color:#fff;border-radius:999px;padding:12px 18px;font:700 .8rem var(--ui);cursor:pointer;margin-top:5px}.auth-submit:hover{background:var(--teal)}.auth-error{min-height:1.1em;color:var(--red);font-size:.8rem!important;margin:0!important}.user-tools{display:flex;justify-content:flex-end;margin:-8px 0 14px}.user-tools button{border:0;background:transparent;color:var(--muted);font:600 .7rem var(--ui);text-decoration:underline;cursor:pointer}.user-tools button:hover{color:var(--teal)}html{font-size:16px;scroll-behavior:smooth}body{min-height:100vh;background:var(--paper);color:var(--ink);font-family:var(--ui);overflow-x:hidden}body:before{content:"";position:fixed;inset:0;pointer-events:none;opacity:.32;background-image:radial-gradient(rgba(50,40,25,.12) .55px,transparent .55px);background-size:7px 7px;z-index:-1}.shell{width:min(100%,1120px);margin:auto;padding:38px 30px 28px}.hero{text-align:center;padding:0 0 28px}.eyebrow{font-size:.68rem;letter-spacing:.18em;text-transform:uppercase;color:var(--red);font-weight:700}.hero h1{font:800 clamp(2.8rem,6vw,4.7rem)/.95 var(--display);letter-spacing:-.055em;margin:10px 0 12px;color:var(--dark)}.hero h1 em{font-style:normal;color:var(--red)}.hero p{color:var(--muted);font-size:.9rem;letter-spacing:.04em}.panel{background:rgba(255,253,249,.9);border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow);margin-bottom:18px}.controls{padding:25px 28px 24px}.control-head{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:22px}.control-head h2{font:700 1.55rem var(--display);margin-top:5px}.ghost{font:600 .75rem var(--ui);letter-spacing:.04em;color:var(--teal);border:1px solid #b6d0ca;background:transparent;border-radius:999px;padding:10px 15px;cursor:pointer;transition:.2s}.ghost:hover{background:var(--teal);color:white}.deck-tabs{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:18px}.deck-btn{border:1px solid var(--line);border-radius:14px;background:#faf8f3;color:var(--ink);padding:14px 12px;text-align:left;font:700 .9rem var(--ui);cursor:pointer;transition:.2s}.deck-btn small{display:block;color:var(--muted);font:500 .78rem var(--display);margin-top:4px}.deck-btn:hover{border-color:var(--gold);transform:translateY(-1px)}.deck-btn.active{background:var(--dark);color:#fff;border-color:var(--dark);box-shadow:0 7px 15px rgba(30,35,30,.16)}.deck-btn.active small{color:#d9cfc1}.filters{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.filters.hidden,.hidden{display:none!important}.filter-label{font-size:.7rem;color:var(--muted);font-weight:700;text-transform:uppercase;letter-spacing:.12em;margin-right:3px}.filter-btn{border:1px solid var(--line);background:#fffdf9;color:var(--muted);border-radius:999px;padding:8px 13px;font:600 .72rem var(--ui);cursor:pointer;transition:.2s}.filter-btn:hover{border-color:var(--teal);color:var(--teal)}.filter-btn.active{background:#e0efeb;border-color:#a7cbc2;color:var(--teal)}.filter-btn.disabled{opacity:.42;cursor:not-allowed}.learning{padding:25px 34px 35px}.toolbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}.mode-tabs{display:flex;background:#eeeae2;border-radius:999px;padding:4px;gap:3px}.mode-btn{border:0;background:transparent;color:var(--muted);border-radius:999px;padding:9px 22px;font:700 .78rem var(--ui);cursor:pointer;transition:.2s}.mode-btn.active{background:var(--dark);color:#fff;box-shadow:0 3px 8px rgba(20,25,22,.18)}.progress{display:flex;align-items:center;gap:14px;margin-bottom:28px;color:var(--muted);font-size:.72rem;font-weight:700}.progress-track{height:5px;background:#ebe5db;border-radius:99px;flex:1;overflow:hidden}.progress-track div{height:100%;width:0;background:var(--red);border-radius:inherit;transition:width .3s}.card-wrap{display:flex;justify-content:center;perspective:1200px}.flashcard{width:min(100%,460px);height:390px;position:relative;transform-style:preserve-3d;transition:transform .55s cubic-bezier(.25,.7,.2,1);cursor:pointer}.flashcard.is-flipped{transform:rotateY(180deg)}.card-face{position:absolute;inset:0;backface-visibility:hidden;-webkit-backface-visibility:hidden;border-radius:20px;display:flex;flex-direction:column;align-items:center;justify-content:center;overflow:hidden}.card-front{background:var(--dark);color:#f8f3eb;box-shadow:0 20px 45px rgba(24,29,26,.2)}.card-front:after{content:"";position:absolute;width:210px;height:210px;border-radius:50%;background:rgba(189,71,59,.12);top:-75px;left:-45px}.card-type-badge{position:absolute;top:21px;left:23px;font-size:.64rem;letter-spacing:.14em;text-transform:uppercase;border:1px solid rgba(255,255,255,.24);border-radius:999px;padding:6px 10px;color:#e5b2a9;z-index:1}.card-kanji{font:500 9.5rem/1 var(--display);position:relative;z-index:1}.tap-hint{position:absolute;bottom:20px;color:rgba(255,255,255,.45);font-size:.68rem;letter-spacing:.12em;text-transform:uppercase}.card-back{background:#fff;transform:rotateY(180deg);padding:35px}.card-back .card-type-badge{color:var(--teal);border-color:#b9d7d0;left:auto;right:22px}.back-meaning{font:700 clamp(1rem,4vw,2.2rem) var(--display);color:var(--teal);overflow-wrap:break-word;hyphens:auto}.back-reading{color:var(--muted);font-size:.9rem}.example{margin-top:32px;padding-top:20px;border-top:1px solid var(--line);width:75%;text-align:center}.example span{display:block;color:var(--muted);font-size:.66rem;text-transform:uppercase;letter-spacing:.15em}.example strong{display:block;font:700 2rem var(--display);margin:8px 0 2px}.example small{color:var(--teal)}.example p{color:var(--muted);font-size:.8rem;margin-top:5px}.nav{display:flex;justify-content:space-between;max-width:460px;margin:20px auto 0;gap:15px}.nav-btn{border:1px solid var(--line);background:#fffdf9;color:var(--ink);border-radius:999px;padding:11px 19px;font:700 .75rem var(--ui);cursor:pointer;transition:.2s}.nav-btn:hover{background:var(--dark);color:#fff;border-color:var(--dark)}.quiz-area{display:none;text-align:center;padding:16px 0 10px}.quiz-area.active{display:block}.quiz-prompt{font:700 8rem/1 var(--display);margin:24px 0 8px;color:var(--dark)}.quiz-question{color:var(--muted);font-size:.85rem}.quiz-choices{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;max-width:500px;margin:25px auto 20px}.quiz-choice{border:1px solid var(--line);background:white;border-radius:12px;padding:14px;font:700 1rem var(--ui);cursor:pointer}.quiz-choice:hover:not(:disabled){border-color:var(--teal);color:var(--teal);transform:translateY(-2px)}.quiz-choice.correct{background:#dcefe9;border-color:var(--teal);color:var(--teal)}.quiz-choice.incorrect{background:#f7dfda;border-color:var(--red);color:var(--red)}.quiz-feedback{min-height:24px;font-weight:700}.quiz-feedback.correct{color:var(--teal)}.quiz-feedback.incorrect{color:var(--red)}.quiz-score{font-size:.78rem;color:var(--muted);margin-top:12px}.stats{padding:25px 28px}.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.stat-grid div{background:#f7f3eb;border-radius:14px;padding:18px;text-align:center}.stat-grid strong{display:block;font:800 2rem var(--display);color:var(--teal)}.stat-grid span{font-size:.72rem;color:var(--muted)}.history{margin-top:18px;color:var(--muted);font-size:.8rem}.history p{padding:8px 0;border-bottom:1px solid var(--line)}footer{text-align:center;color:#99968e;font-size:.7rem;letter-spacing:.08em;padding:10px}
@media(max-width:680px){.shell{padding:24px 14px}.controls,.learning,.stats{padding:20px 17px}.deck-tabs{grid-template-columns:1fr}.filters{gap:6px}.filter-label{width:100%}.toolbar{align-items:flex-start}.flashcard{height:360px}.card-kanji{font-size:8rem}.back-meaning{font-size:clamp(1.1rem,5.5vw,2rem)}.quiz-choices{grid-template-columns:repeat(2,1fr)}.hero h1{font-size:3.2rem}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;transition-duration:.01ms!important}}
#btn-next.is-finished{
  opacity:.5;
  cursor:not-allowed;
  pointer-events:none;
}

.nav-link-cours {
  display: inline-block;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  background: var(--teal, #005B8E);
  color: #fff;
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
  margin-right: 0.5rem;
}
.nav-link-cours:hover {
  opacity: 0.85;
}

.home-choices {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.home-card {
  flex: 1 1 240px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.5rem;
  padding: 1.5rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  text-decoration: none;
  color: var(--ink);
  background: var(--panel);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.home-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}

.home-card-icon {
  font-size: 2rem;
}

.home-card h2 {
  margin: 0;
}

.home-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}
.home-choices {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}

.home-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 0.5rem;
  padding: 2rem 1.5rem;
  border-radius: 12px;
  border: 1px solid var(--border, #e0e0e0);
  text-decoration: none;
  color: inherit;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.home-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 20px rgba(0,0,0,0.08);
}

.home-card-icon {
  font-size: 2.5rem;
}

.home-card h2 {
  margin: 0;
}

.home-card p {
  margin: 0;
  color: var(--muted, #888);
  font-size: 0.9rem;
}