:root{--paper: #f3ead8;--ink: #1e1710;--muted: #6d6256;--card: #fff8ec;--line: #e2d3bc;--accent: #c24b28;--accent-dark: #9a3518;--pine: #2b5546;--gold: #c9a227;--shadow: 0 18px 50px rgba(80, 50, 20, .12)}*{box-sizing:border-box}html,body,#root{min-height:100%}body{margin:0;color:var(--ink);background:radial-gradient(1200px 500px at 10% -10%,#ffe9c8 0%,transparent 55%),radial-gradient(900px 400px at 100% 0%,#dceee4 0%,transparent 50%),var(--paper);font-family:Outfit,system-ui,sans-serif}h1,h2,h3{font-family:Fraunces,Georgia,serif;font-weight:700;letter-spacing:-.03em;margin:0}button,input,textarea,select{font:inherit}a{color:inherit;text-decoration:none}.shell{max-width:1080px;margin:0 auto;padding:28px 20px 80px}.topbar{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:28px}.brand{display:flex;align-items:baseline;gap:10px}.brand strong{font-family:Fraunces,serif;font-size:28px}.brand span{color:var(--muted);font-size:14px}.user-chip{display:flex;align-items:center;gap:10px;background:var(--card);border:1px solid var(--line);border-radius:999px;padding:6px 8px 6px 14px}.ghost{background:transparent;border:1px solid var(--line);color:var(--ink);border-radius:999px;padding:8px 14px;cursor:pointer}.ghost:hover,.primary:hover,.pine:hover{transform:translateY(-1px)}.primary,.pine,.danger{border:0;border-radius:999px;padding:10px 16px;cursor:pointer;color:#fff}.primary{background:var(--accent)}.pine{background:var(--pine)}.danger{background:transparent;color:var(--accent);border:1px solid #efc3b4;border-radius:999px;padding:8px 12px;cursor:pointer}.welcome{min-height:100vh;display:grid;place-items:center;padding:24px}.welcome-card{width:min(480px,100%);background:var(--card);border:1px solid var(--line);border-radius:28px;padding:36px 32px;box-shadow:var(--shadow)}.eyebrow{text-transform:uppercase;letter-spacing:.18em;font-size:11px;color:var(--accent);font-weight:600;margin-bottom:10px}.lede{color:var(--muted);line-height:1.5;margin:12px 0 24px}label{display:block;font-size:13px;color:var(--muted);margin-bottom:6px}.field{width:100%;border:1px solid var(--line);background:#fff;border-radius:14px;padding:12px 14px;outline:none}.field:focus{border-color:var(--accent)}.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px}.deck-card,.panel{background:var(--card);border:1px solid var(--line);border-radius:22px;padding:18px;box-shadow:0 10px 30px #5032140f}.deck-card h3{margin-bottom:8px}.meta{color:var(--muted);font-size:13px}.row{display:flex;gap:12px;flex-wrap:wrap;align-items:end}.grow{flex:1;min-width:180px}.tabs{display:flex;gap:8px;margin:8px 0 16px}.tab{border:1px solid var(--line);background:#fff;border-radius:999px;padding:8px 14px;cursor:pointer}.tab.on{background:var(--ink);color:#fff;border-color:var(--ink)}.drop{border:1.5px dashed var(--line);border-radius:18px;padding:28px;text-align:center;background:#fff;cursor:pointer}.drop input{display:none}.drop.loading{cursor:wait;pointer-events:none;min-height:180px;display:grid;place-items:center}.photo-loader{display:grid;justify-items:center;gap:8px}.spinner{width:36px;height:36px;border:3px solid var(--line);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.preview{max-width:100%;max-height:220px;border-radius:14px;margin-top:12px}.card-list{display:flex;flex-direction:column;gap:12px;margin-top:18px}.study-card{display:grid;grid-template-columns:1fr auto;gap:12px;align-items:start}.word{font-family:Fraunces,serif;font-size:28px}.translation{font-size:18px;color:var(--pine);margin:4px 0 10px}.sentence{color:var(--muted);line-height:1.45}.note{margin-top:8px;font-size:13px;color:var(--gold)}.error{color:var(--accent);margin:10px 0}.stage{min-height:360px;display:grid;place-items:center;perspective:1200px}.flip{width:min(520px,100%);height:300px;position:relative;transform-style:preserve-3d;transition:transform .55s cubic-bezier(.2,.8,.2,1);cursor:pointer;border:0;background:transparent;padding:0;color:inherit}.flip.show-back{transform:rotateY(180deg)}.face{position:absolute;top:0;right:0;bottom:0;left:0;backface-visibility:hidden;background:var(--card);border:1px solid var(--line);border-radius:28px;box-shadow:var(--shadow);display:grid;place-items:center;padding:28px;text-align:center}.back{transform:rotateY(180deg)}.progress{height:6px;background:var(--line);border-radius:99px;overflow:hidden;margin:8px 0 22px}.progress>div{height:100%;background:var(--accent)}.actions{display:flex;justify-content:center;gap:12px;margin-top:18px}.done{text-align:center;padding:40px 0}.write-panel{width:min(560px,100%);margin:0 auto;background:var(--card);border:1px solid var(--line);border-radius:28px;box-shadow:var(--shadow);padding:28px;text-align:center}.write-field{font-size:22px;text-align:center;margin-top:4px}.write-field.correct{border-color:var(--pine);background:#eef6f1}.write-field.wrong{border-color:var(--accent);background:#fff1ea}.ok{color:var(--pine);font-weight:600;margin:10px 0 0}@media(max-width:640px){.word{font-size:22px}.flip{height:280px}}