.nav-top{display:flex;justify-content:space-between;align-items:center;width:100%}.menu-toggle{display:none;flex-direction:column;justify-content:space-between;width:30px;height:21px;background:transparent;border:none;cursor:pointer;padding:0;z-index:10}.bar{height:3px;width:100%;background-color:var(--primary-color);border-radius:10px;transition:var(--transition)}.nav-content{display:flex;align-items:center;justify-content:space-between;width:100%}.user-menu{display:flex;align-items:center;margin-left:1rem}.username{margin-right:.5rem;font-weight:700;color:var(--primary-color)}.user-role{margin-right:.5rem;font-size:.8rem;color:#666}.logout-btn{background:none;border:none;color:var(--primary-color);cursor:pointer;font-size:.9rem;padding:.25rem .5rem;border-radius:var(--border-radius);transition:var(--transition)}.logout-btn:hover{background-color:#0000000d}.change-password-link{margin-right:.75rem;color:var(--primary-color);font-size:.9rem;transition:var(--transition)}.change-password-link:hover{color:var(--secondary-color);text-decoration:underline}.login-btn{padding:.25rem .75rem;background-color:var(--primary-color);color:#fff;border-radius:var(--border-radius);transition:var(--transition)}.login-btn:hover{background-color:var(--secondary-color);transform:translateY(-2px)}@media (max-width: 768px){.menu-toggle{display:flex;margin-right:5px}.bar{height:2px;margin:2px 0}.nav-content{flex-direction:column;position:absolute;top:60px;left:0;width:100%;background:white;box-shadow:0 4px 8px #0000001a;z-index:100;max-height:0;overflow:hidden;transition:max-height .3s ease-out,padding .3s ease;padding:0}.nav-content.nav-open{max-height:500px;padding:.5rem 0}.nav-links{flex-direction:column;width:100%;gap:0}.nav-links a{display:block;padding:12px 16px;width:100%;text-align:center;border-radius:0}.user-menu{flex-direction:column;align-items:center;margin:10px 0;width:100%;padding:10px 0;border-top:1px solid #eee}.username,.user-role{margin-right:0;margin-bottom:5px}.logout-btn{width:80%;padding:8px 0;margin-top:5px;text-align:center;background-color:#f5f5f5}.nav-links .login-btn{margin:10px auto;width:80%;text-align:center}}:root{--primary-color: #4CAF50;--secondary-color: #8BC34A;--accent-color: #FFC107;--text-color: #333;--light-bg: #f9f9f9;--border-radius: 12px;--box-shadow: 0 4px 8px rgba(0, 0, 0, .1);--transition: all .3s ease}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Comic Sans MS,Marker Felt,Arial Rounded MT Bold,sans-serif;color:var(--text-color);background-color:var(--light-bg);line-height:1.6}.app-container{display:flex;flex-direction:column;min-height:100vh}.app-header{background-color:#fff;box-shadow:var(--box-shadow);padding:1rem 2rem}.main-nav{display:flex;justify-content:space-between;align-items:center}.logo{display:flex;align-items:center;text-decoration:none;color:var(--primary-color);font-size:1.5rem;font-weight:700}.logo-image{height:40px;margin-right:10px}.nav-links{display:flex;gap:20px}.nav-links a{color:var(--text-color);text-decoration:none;padding:8px 16px;border-radius:var(--border-radius);transition:var(--transition)}.nav-links a:hover,.nav-links a.router-link-active{background-color:var(--primary-color);color:#fff}.app-main{flex:1;padding:2rem;max-width:1200px;margin:0 auto;width:100%}.app-footer{background-color:#fff;text-align:center;padding:1rem;margin-top:auto;font-size:.9rem;color:#666}.btn{background-color:var(--primary-color);color:#fff;border:none;padding:10px 20px;border-radius:var(--border-radius);cursor:pointer;font-size:1rem;transition:var(--transition)}.btn:hover{background-color:var(--secondary-color);transform:translateY(-2px)}.btn-secondary{background-color:var(--secondary-color)}.btn-accent{background-color:var(--accent-color)}.card{background-color:#fff;border-radius:var(--border-radius);box-shadow:var(--box-shadow);padding:1.5rem;margin-bottom:1.5rem;transition:var(--transition)}.card:hover{transform:translateY(-5px);box-shadow:0 6px 12px #00000026}.form-group{margin-bottom:1.5rem}.form-label{display:block;margin-bottom:.5rem;font-weight:700}.form-input{width:100%;padding:10px;border:2px solid #ddd;border-radius:var(--border-radius);font-size:1rem;transition:var(--transition)}.form-input:focus{border-color:var(--primary-color);outline:none}.flashcard{background-color:#fff;border-radius:var(--border-radius);box-shadow:var(--box-shadow);padding:2rem;margin:2rem auto;max-width:500px;text-align:center;transition:var(--transition);position:relative;min-height:200px;display:flex;flex-direction:column;justify-content:center}.flashcard-front,.flashcard-back{position:absolute;top:0;left:0;width:100%;height:100%;backface-visibility:hidden;display:flex;flex-direction:column;justify-content:center;align-items:center;padding:2rem;border-radius:var(--border-radius)}.flashcard-content{font-size:1.5rem;margin-bottom:1rem}@media (max-width: 768px){.app-header{padding:.75rem 1rem}.main-nav{flex-direction:column;gap:.75rem}.logo{font-size:1.2rem}.logo-image{height:32px}.nav-links{width:100%;justify-content:center;flex-wrap:wrap;gap:10px}.nav-links a{padding:6px 12px;font-size:.9rem}.user-menu{width:100%;justify-content:center;margin-left:0;margin-top:.5rem}.app-main{padding:1rem}.flashcard{margin:1rem auto;padding:1.5rem}}@media (max-width: 480px){.nav-links{flex-direction:column;align-items:center}.nav-links a{width:100%;text-align:center}.user-menu{flex-direction:column;gap:.5rem}.username,.user-role{margin-right:0}}