*{box-sizing:border-box}:root{font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;line-height:1.5;font-weight:400;--color-electric-yellow: #FFEB3B;--color-deep-purple: #311B92;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{margin:0;padding:0;min-height:100vh}#root{min-height:100vh}@keyframes slideOutLeft{0%{transform:translate(0);opacity:1}to{transform:translate(-100%);opacity:0}}@keyframes slideOutRight{0%{transform:translate(0);opacity:1}to{transform:translate(100%);opacity:0}}@keyframes fadeIn{0%{opacity:0;transform:scale(.9)}to{opacity:1;transform:scale(1)}}.flashcard-wrapper{display:flex;flex-direction:column;align-items:center;gap:24px;width:100%;max-width:500px}.flashcard-wrapper.exit-left{animation:slideOutLeft .5s ease-in-out forwards}.flashcard-wrapper.exit-right{animation:slideOutRight .5s ease-in-out forwards}.flashcard-wrapper.fade-in{animation:fadeIn .5s ease-out}.flashcard-container{perspective:1000px;cursor:pointer;width:100%;height:400px}.flashcard{position:relative;width:100%;height:100%;transition:transform .6s;transform-style:preserve-3d}.flashcard.flipped{transform:rotateY(180deg)}.flashcard-front,.flashcard-back{position:absolute;width:100%;height:100%;backface-visibility:hidden;border-radius:16px;display:flex;flex-direction:column;justify-content:center;align-items:center;padding:40px;box-sizing:border-box;box-shadow:0 8px 24px #0000004d}.flashcard-front{background-color:var(--color-electric-yellow);color:var(--color-deep-purple)}.flashcard-back{background-color:var(--color-deep-purple);color:var(--color-electric-yellow);transform:rotateY(180deg)}.flashcard-front h2,.flashcard-back h2{font-size:4rem;font-weight:900;margin:0;text-align:center;line-height:1.2}.flashcard-front .hint{font-size:1.2rem;margin-top:20px;opacity:.7;font-weight:600}.flashcard-back .definition{font-size:1.3rem;margin-top:20px;text-align:center;font-weight:500;font-style:italic}.flashcard-back .tags{margin-top:24px;display:flex;gap:8px;flex-wrap:wrap;justify-content:center}.flashcard-back .tag{background-color:var(--color-electric-yellow);color:var(--color-deep-purple);padding:6px 14px;border-radius:20px;font-size:.9rem;font-weight:700}.flashcard-actions{display:flex;gap:20px;width:100%;justify-content:center}.action-button{padding:16px 32px;font-size:1.3rem;font-weight:700;border:none;border-radius:12px;cursor:pointer;transition:all .3s ease;box-shadow:0 4px 12px #0003;font-family:inherit}.action-button:hover{transform:translateY(-2px);box-shadow:0 6px 16px #0000004d}.action-button:active{transform:translateY(0);box-shadow:0 2px 8px #0003}.review-button{background-color:var(--color-electric-yellow);color:var(--color-deep-purple)}.known-button{background-color:var(--color-deep-purple);color:var(--color-electric-yellow);border:3px solid var(--color-electric-yellow)}@media(max-width:600px){.flashcard-container{height:350px}.flashcard-front h2,.flashcard-back h2{font-size:3rem}.flashcard-front .hint{font-size:1rem}.flashcard-back .definition{font-size:1.1rem}.flashcard-back .tag{font-size:.8rem;padding:4px 12px}.action-button{padding:12px 24px;font-size:1.1rem}}.app-container{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--color-deep-purple) 0%,#1a0f4d 100%);padding:20px}.app-header{text-align:center;margin-bottom:40px}.app-header h1{font-size:4rem;font-weight:900;color:var(--color-electric-yellow);margin:0;text-shadow:2px 2px 8px rgba(0,0,0,.5);letter-spacing:2px}.app-header .tagline{font-size:1.5rem;color:var(--color-electric-yellow);margin:10px 0 0;opacity:.9;font-weight:600;font-style:italic}.app-main{display:flex;flex-direction:column;align-items:center;gap:30px}.status{font-size:1.5rem;color:var(--color-electric-yellow);font-weight:600;text-align:center}.status.error{color:#ff5252}.navigation{text-align:center}.word-counter{font-size:1.2rem;color:var(--color-electric-yellow);font-weight:600;margin:0}.progress-info{text-align:center;margin-top:10px}.progress-text{font-size:1rem;color:var(--color-electric-yellow);font-weight:500;margin:0;opacity:.8}.reset-button{padding:16px 32px;font-size:1.3rem;font-weight:700;background-color:var(--color-electric-yellow);color:var(--color-deep-purple);border:none;border-radius:12px;cursor:pointer;transition:all .3s ease;box-shadow:0 4px 12px #0003;font-family:inherit;margin-top:20px}.reset-button:hover{transform:translateY(-2px);box-shadow:0 6px 16px #0000004d}.reset-button:active{transform:translateY(0);box-shadow:0 2px 8px #0003}@media(max-width:600px){.app-header h1{font-size:3rem}.app-header .tagline{font-size:1.2rem}.reset-button{padding:12px 24px;font-size:1.1rem}}