*{margin:0;padding:0;box-sizing:border-box}body{font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;background-color:#f5f7fa;color:#222;line-height:1.6}a{text-decoration:none;color:inherit}button{cursor:pointer;background-color:#007bff;color:#fff;padding:8px 14px;border:none;border-radius:5px;transition:.3s}button:hover{background-color:#0056b3}.container{margin:10px}header{background-color:#333;color:#fff;padding:15px 0;text-align:center}header h1{font-size:2rem}footer{background-color:#333;color:#fff;text-align:center;padding:12px 0;margin-top:40px}form{background-color:#fff;padding:20px;border-radius:8px;box-shadow:0 2px 8px #0000001a;max-width:500px;margin:20px auto}form input,form select,form textarea{width:100%;padding:10px 12px;margin-bottom:15px;border:1px solid #ccc;border-radius:5px}form label{font-weight:700;margin-bottom:5px;display:block}.card{background-color:#fff;border-radius:8px;padding:15px;box-shadow:0 2px 8px #0000001a;margin-bottom:20px}.course-link{color:#007bff;font-weight:700}.dashboard{display:flex;flex-direction:column;gap:20px}.alert{padding:10px 15px;background-color:#fdd;border-left:6px solid #f44336;margin-bottom:15px;border-radius:5px}.nav{display:flex;justify-content:space-between;align-items:center;background:#2b6777;padding:15px 40px;color:#fff;font-family:Poppins,sans-serif;box-shadow:0 2px 8px #00000026;position:sticky;top:0;z-index:100}.nav-left h1{margin:0;font-size:1.6rem;font-weight:600;cursor:pointer;letter-spacing:1px;transition:transform .3s ease}.nav-left h1:hover{transform:scale(1.05);color:#f5f5f5}.nav-right{display:flex;align-items:center;gap:20px}.nav-right a{text-decoration:none;color:#f2f2f2;font-size:1rem;font-weight:500;transition:all .3s ease;padding:6px 10px;border-radius:6px}.nav-right a:hover{background-color:#f2f2f2;color:#2b6777}.nav-right button{background-color:#f2f2f2;color:#2b6777;border:none;padding:7px 14px;border-radius:6px;font-size:1rem;font-weight:500;cursor:pointer;transition:all .3s ease}.nav-right button:hover{background-color:#205662;color:#fff}@media(max-width:768px){.nav{flex-direction:column;align-items:flex-start;padding:15px 25px}.nav-right{flex-wrap:wrap;gap:10px;margin-top:10px}.nav-right a,.nav-right button{font-size:.9rem}}.footer{background-color:#284e60;color:#eee;padding:30px 0;bottom:0;width:100%;text-align:left;font-family:Poppins,sans-serif;box-shadow:0 -2px 6px #0000004d}.footer-container{display:flex;justify-content:space-around;align-items:flex-start;flex-wrap:wrap;max-width:1100px;margin:0 auto;padding:0 20px}.footer-section{flex:1;min-width:220px;margin-bottom:20px}.footer-section h3{color:#00bcd4;margin-bottom:10px}.footer-section p,.footer-section ul,.footer-section a{font-size:14px;line-height:1.6;color:#ccc;text-decoration:none}.footer-section ul{list-style:none;padding:0}.footer-section li{margin:6px 0}.footer-section a:hover{color:#00bcd4}.social-links a{display:inline-block;margin-right:10px;color:#ccc}.social-links a:hover{color:#00bcd4}.footer-bottom{border-top:1px solid #444;margin-top:15px;padding-top:10px;text-align:center;font-size:13px;color:#aaa}*{padding:0;margin:0}.home{font-family:Poppins,sans-serif;color:#333;text-align:center;background:#f9fafc;min-height:100vh}.hero-section{background:linear-gradient(135deg,#007bff,#00bcd4);color:#fff;padding:50px 0;border-radius:0 0 40px 40px}.hero-section h1{font-size:2.8rem;margin-bottom:10px}.highlight{color:#ffeb3b}.hero-section p{font-size:1.2rem;max-width:700px;margin:10px auto 30px}.cta-buttons{display:flex;justify-content:center;gap:20px}.btn{padding:12px 25px;border-radius:25px;text-decoration:none;font-weight:600;transition:.3s ease}.btn.primary{background:#fff;color:#007bff}.btn.primary:hover{background:#ffeb3b;color:#222}.btn.secondary{background:transparent;border:2px solid #fff;color:#fff}.btn.secondary:hover{background:#fff;color:#007bff}.features{padding:60px 20px}.features h2{font-size:2rem;margin-bottom:40px;color:#007bff}.feature-grid{display:flex;flex-wrap:wrap;justify-content:center;gap:25px}.feature-card{background:#fff;border-radius:15px;padding:25px;width:300px;box-shadow:0 4px 10px #0000001a;transition:transform .3s ease}.feature-card:hover{transform:translateY(-5px)}.about{background:#eef6f8;padding:60px 20px;border-top:2px solid #00bcd4}.about h2{color:#007bff;margin-bottom:20px}.about p{max-width:800px;margin:10px auto;line-height:1.7}.home-footer{background:#111;color:#bbb;padding:20px 10px;font-size:.9rem;border-top:1px solid #333}.auth-form{max-width:400px;margin:40px auto;padding:25px;background-color:#fff;border-radius:8px;box-shadow:0 2px 8px #0000001a}.auth-form h2{margin-bottom:20px;text-align:center}.auth-form input{margin-bottom:15px}.auth-form button{width:100%}.tutor-dashboard{max-width:1000px;margin:50px auto;padding:30px;background:#fff;border-radius:16px;box-shadow:0 4px 20px #00000014;font-family:Poppins,sans-serif}h2{text-align:center;color:#333;margin-bottom:25px;font-weight:600}section{margin-bottom:40px;background:#fafafa;border-radius:12px;padding:20px 25px;box-shadow:0 2px 8px #0000000d}h3{color:#2b6777;margin-bottom:15px;font-size:1.2rem;border-left:4px solid #2b6777;padding-left:10px}.add-course form{display:flex;flex-direction:column;gap:12px}.add-course input,.add-course textarea{padding:10px;border:1px solid #ddd;border-radius:8px;outline:none;font-size:14px;transition:all .2s ease}.add-course input:focus,.add-course textarea:focus{border-color:#2b6777;box-shadow:0 0 4px #2b67774d}.add-course button{background:#2b6777;color:#fff;border:none;padding:12px;border-radius:8px;cursor:pointer;font-size:15px;font-weight:500;transition:all .2s ease}.add-course button:hover{background:#205662}.my-courses{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px}.course-card{background:#fff;border-radius:12px;box-shadow:0 2px 10px #00000014;padding:15px;transition:transform .2s ease,box-shadow .2s ease}.course-card:hover{transform:translateY(-3px);box-shadow:0 4px 14px #0000001f}.course-card h4{color:#222;margin-bottom:6px;font-weight:600}.course-card p{color:#555;font-size:14px}.requests .request-card{background:#fff;padding:15px;margin-bottom:15px;border-radius:10px;border-left:5px solid #2b6777;transition:all .3s ease}.requests .request-card:hover{background:#f4fbfc}.requests button{background:#2b6777;color:#fff;border:none;margin-right:10px;padding:8px 14px;border-radius:6px;cursor:pointer;transition:all .2s ease}.requests button:hover{background:#205662}.requests button:nth-child(2){background:#c0392b}.requests button:nth-child(2):hover{background:#a93226}.course-card{border:1px solid #e0e0e0;border-radius:12px;padding:20px;margin:15px;width:280px;background:#fff;box-shadow:0 4px 12px #00000014;display:flex;flex-direction:column;gap:12px;transition:transform .2s ease,box-shadow .2s ease}.course-card:hover{transform:translateY(-5px);box-shadow:0 8px 20px #0000001f}.course-card h3{font-size:1.2rem;color:#333;margin-bottom:5px}.course-card p{font-size:.95rem;color:#555;margin:0}.video-link{color:#fff;background-color:#007bff;padding:8px 12px;border-radius:6px;text-decoration:none;text-align:center;font-weight:500;transition:background-color .2s ease}.video-link:hover{background-color:#0056b3}.enroll-btn{background-color:#28a745;color:#fff;border:none;padding:10px 14px;border-radius:6px;cursor:pointer;font-weight:500;transition:background-color .2s ease}.enroll-btn:hover{background-color:#218838}.student-dashboard{max-width:1200px;margin:0 auto;padding:20px;font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif}.student-dashboard h2{text-align:center;font-size:2rem;margin-bottom:10px;color:#333}.student-dashboard p{text-align:center;color:#555;margin-bottom:30px;font-size:1.1rem}.courses{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:20px}.course-card{background-color:#fff;border-radius:10px;padding:20px;box-shadow:0 5px 15px #0000001a;transition:transform .3s,box-shadow .3s;display:flex;flex-direction:column;justify-content:space-between}.course-card:hover{transform:translateY(-5px);box-shadow:0 10px 25px #00000026}.course-card h3{font-size:1.3rem;margin-bottom:10px;color:#007bff}.course-card p{font-size:.95rem;color:#555;margin-bottom:15px}.course-card button{align-self:flex-start;padding:8px 15px;border:none;border-radius:5px;background-color:#007bff;color:#fff;font-weight:500;cursor:pointer;transition:background-color .3s}.course-card button:hover{background-color:#0056b3}@media(max-width:768px){.courses{grid-template-columns:repeat(auto-fill,minmax(200px,1fr))}}.search-bar{text-align:center;margin-bottom:20px}.search-bar input{width:300px;max-width:90%;padding:10px 15px;border-radius:8px;border:1px solid #ccc;font-size:1rem;transition:border-color .3s}.search-bar input:focus{border-color:#007bff;outline:none}.student-dashboard{padding:20px;max-width:1000px;margin:auto}.approved-link{margin-bottom:15px}.approved-link a{background-color:#4caf50;color:#fff;padding:8px 15px;border-radius:5px;text-decoration:none;font-weight:700}.approved-link a:hover{background-color:#45a049}.search-bar{margin:15px 0}.search-bar input{width:100%;padding:10px;font-size:16px;border-radius:5px;border:1px solid #ccc}.courses{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px;margin-top:20px}