.flashcard{border:none;padding:30px;border-radius:20px;width:100%;max-width:500px;min-height:200px;background:linear-gradient(135deg,#ffffffe6,#ffffffb3);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);box-shadow:0 8px 32px #0000001a;cursor:pointer;transition:all .3s cubic-bezier(.4,0,.2,1);border:1px solid rgba(255,255,255,.2);display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;color:#2d1b69;font-weight:500;line-height:1.6;margin:0 auto}.flashcard:hover{transform:translateY(-8px) scale(1.02);box-shadow:0 15px 40px #9896f133;background:linear-gradient(135deg,#fffffff2,#fffc)}.flashcard h3{margin:0 0 15px;color:#9896f1;font-size:1.1rem;font-weight:600}.flashcard p{margin:0;font-size:1.1rem;color:#2d1b69}@media (max-width: 768px){.flashcard{padding:25px;max-width:90vw;min-height:180px}.flashcard h3,.flashcard p{font-size:1rem}}@media (max-width: 480px){.flashcard{padding:20px;max-width:95vw;min-height:160px;border-radius:15px}.flashcard h3,.flashcard p{font-size:.9rem}.flashcard:hover{transform:translateY(-4px) scale(1.01)}}*{box-sizing:border-box}body{margin:0;padding:0;background:linear-gradient(135deg,#edb1f1,#d59bf6 25%,#9896f1 75%,#8ef6e4);min-height:100vh;font-family:Inter,Segoe UI,Tahoma,Geneva,Verdana,sans-serif}.container{padding:20px;align-items:center;display:flex;flex-direction:column;min-height:100vh;max-width:800px;margin:0 auto}.title{color:#2d1b69;font-size:2.5rem;font-weight:700;margin-bottom:2rem;text-align:center;text-shadow:0 2px 4px rgba(0,0,0,.1)}input[type=file]{display:none}.file-input-label{display:inline-block;padding:12px 24px;background:linear-gradient(135deg,#d59bf6,#9896f1);color:#fff;border-radius:12px;cursor:pointer;font-weight:600;font-size:1rem;border:none;box-shadow:0 4px 15px #9596f14d;transition:all .3s ease;margin-bottom:2rem}.file-input-label:hover{transform:translateY(-2px);box-shadow:0 6px 20px #9596f166;background:linear-gradient(135deg,#c589f3,#8784ee)}.file-input-label:active{transform:translateY(0)}.button-group{display:flex;gap:20px;margin-top:30px;justify-content:center;flex-wrap:wrap}.button-left,.button-right{padding:12px 24px;border:none;border-radius:12px;font-weight:600;font-size:1rem;cursor:pointer;transition:all .3s ease;color:#fff;box-shadow:0 4px 15px #0000001a;min-width:120px}.button-left{background:linear-gradient(135deg,#edb1f1,#d59bf6)}.button-left:hover{background:linear-gradient(135deg,#e89fee,#c589f3);transform:translateY(-2px);box-shadow:0 6px 20px #edb1f166}.button-right{background:linear-gradient(135deg,#9896f1,#8ef6e4)}.button-right:hover{background:linear-gradient(135deg,#8784ee,#7cf0d9);transform:translateY(-2px);box-shadow:0 6px 20px #9896f166}.button-left:active,.button-right:active{transform:translateY(0)}p{color:#2d1b69;font-weight:500;margin-top:15px;font-size:1.1rem}p:has-text("Processing..."){color:#9896f1;font-weight:600;font-size:1.2rem}div[style*="color: red"]{background:#ff6b6b1a;border:1px solid #ff6b6b;border-radius:8px;padding:12px;margin-bottom:20px;color:#d63031!important;font-weight:500}@media (max-width: 768px){.container{padding:15px}.title{font-size:2rem;margin-bottom:1.5rem}.button-group{gap:15px;margin-top:20px}.button-left,.button-right{padding:10px 20px;font-size:.9rem;min-width:100px}.file-input-label{padding:10px 20px;font-size:.9rem}}@media (max-width: 480px){.container{padding:10px}.title{font-size:1.8rem}.button-group{flex-direction:column;align-items:center;gap:12px}.button-left,.button-right{width:200px;padding:12px 20px}}