.navbar{display:flex;justify-content:space-between;align-items:center;padding:20px 40px}.logo{font-size:1.8rem;font-weight:700;color:#1c1e21}.nav-links{list-style-type:none;display:flex;gap:25px}.nav-links li{font-size:1.1rem;color:#4f4f4f;cursor:pointer}.nav-links li:hover{color:#1c1e21}.hero{display:flex;flex-direction:column;justify-content:center;align-items:center;height:80vh;text-align:center;background:linear-gradient(135deg,#e0efff,#fff)}.hero-header{font-size:3rem;font-weight:700;color:#1c1e21;margin-bottom:15px}.hero-subheader{font-size:1.5rem;color:#4f4f4f;margin-bottom:30px}.submit-btn{font-size:1.2rem;padding:15px 20px;color:#fff;background-color:#1c1e21;border:none;border-radius:6px;transition:background-color .3s ease;text-decoration:none}a{text-decoration:none;color:#1c1e21}@media (max-width: 768px){.hero-header{font-size:2.2rem}.hero-subheader{font-size:1.2rem}.cta-button{font-size:1rem;padding:12px 25px}}.doc-container{display:flex;justify-content:center;align-items:center;height:100vh;padding:20px;background-color:#f7f9fc}.doc{background-color:#fff;padding:40px;max-width:800px;width:100%;border-radius:8px;box-shadow:0 4px 16px #0000001a;font-family:Georgia,serif;line-height:1.6;color:#1c1e21;overflow-y:auto}.doc h1,.doc h2,.doc h3,.doc h4,.doc h5,.doc h6{color:#1c1e21;margin-top:20px;font-weight:700}.doc p{margin:10px 0}.doc blockquote{margin:20px 0;padding:10px 20px;background-color:#f1f3f4;border-left:5px solid #ccc}.doc pre{background-color:#f4f4f4;padding:15px;border-radius:6px;margin:20px 0;overflow-x:auto}.doc ul,.doc ol{margin-left:20px;padding-left:10px}.doc a{color:#007acc;text-decoration:none}.flashcard{width:300px;height:200px;perspective:1000px;cursor:pointer;margin:20px auto}.flashcard-inner{position:relative;width:100%;height:100%;text-align:center;transition:transform .6s;transform-style:preserve-3d}.flipped .flashcard-inner{transform:rotateY(180deg)}.flashcard-front,.flashcard-back{position:absolute;width:100%;height:100%;backface-visibility:hidden;display:flex;justify-content:center;align-items:center;border-radius:10px;background-color:#fff;box-shadow:0 4px 12px #0000001a}.flashcard-front{background-color:#f7f9fc;color:#1c1e21}.flashcard-back{background-color:#1c1e21;color:#fff;transform:rotateY(180deg)}.flashcard-front p,.flashcard-back p{font-size:1.2rem;padding:0 20px}*{margin:0;padding:0;box-sizing:border-box;font-family:Inter,sans-serif}body{background-color:#f7f9fc}.form-container{display:flex;flex-direction:column;align-items:center;margin:50px 20px}.form-header{font-size:2rem;font-weight:700;color:#1c1e21;margin-bottom:20px}.study-form{width:100%;max-width:500px;background-color:#fff;border-radius:10px;box-shadow:0 4px 12px #0000001a;padding:30px}.form-label{font-size:1rem;color:#1c1e21;margin-bottom:8px}.form-input{width:100%;padding:12px 15px;margin-bottom:20px;border:1px solid #dcdcdc;border-radius:6px;font-size:1rem;color:#1c1e21;background-color:#f7f9fc;transition:border-color .3s ease}.form-input:focus{border-color:#1c1e21;outline:none}.drag-drop-zone{display:flex;justify-content:center;align-items:center;height:150px;border:2px dashed #dcdcdc;border-radius:6px;background-color:#f7f9fc;margin-bottom:20px;text-align:center;color:#4f4f4f;cursor:pointer;transition:border-color .3s ease}.drag-drop-zone.active{border-color:#1c1e21;background-color:#e0efff}.drag-drop-zone p{margin:0;font-size:1rem}.file-input{display:none}.form-submit{font-size:1.2rem;padding:12px 20px;color:#fff;background-color:#1c1e21;border:none;border-radius:6px;cursor:pointer;margin:20px auto 0;display:block}.form-text{text-align:center;margin-top:20px}.loading{display:flex;justify-content:center;align-items:center;font-family:Inter,sans-serif;font-size:1.2em}.loading-dots span{animation:blink 1.4s infinite both}.loading-dots span:nth-child(2){animation-delay:.2s}.loading-dots span:nth-child(3){animation-delay:.4s}@keyframes blink{0%{opacity:0}to{opacity:1}}