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#00000026}.course-header{display:flex;align-items:center;margin-bottom:20px;flex-wrap:wrap}.course-cover-image{width:150px;height:auto;border-radius:12px;margin-right:20px;box-shadow:0 4px 8px #0000001a}.course-header h1{font-size:2.2rem;color:#333;margin:0;flex:1}.course-description{width:100%;padding:12px;border:1px solid #ccc;border-radius:8px;margin-bottom:20px;resize:none;font-size:1rem;transition:border-color .3s}.course-description:focus{border-color:#007bff;outline:none}.videos-section{margin:20px 0}.videos-list{display:flex;flex-direction:column}.video-card-horizontal{display:flex;align-items:center;margin-bottom:15px;padding:15px;border:1px solid #e0e0e0;border-radius:8px;background-color:#fff;box-shadow:0 4px 12px #0000000d;transition:transform .3s,box-shadow .3s}.video-card-horizontal:hover{transform:translateY(-5px);box-shadow:0 8px 20px #0000001a}.video-thumbnail-horizontal{width:260px;height:180px;border-radius:8px;margin-right:15px;box-shadow:0 4px 8px #0000001a}.watch-delete{display:flex}.watch-delete a,.watch-delete button{height:40px;max-width:150px}.quiz-section{margin-top:20px;padding:15px;background-color:#f9f9f9;border:1px solid #e0e0e0;border-radius:8px;box-shadow:0 4px 12px #0000000d;transition:box-shadow .3s}.quiz-section:hover{box-shadow:0 8px 20px #0000001a}.quiz-data{display:flex;justify-content:space-between;align-items:center;padding:10px;background-color:#fff;border:1px solid #ccc;border-radius:6px;margin-bottom:10px;box-shadow:0 2px 5px #0000000d}.quiz-data p{max-width:400px}.quiz-title{font-size:1.1rem;font-weight:500;color:#333;flex:2}.quiz-actions{display:flex;gap:10px}.quiz-button{background-color:#007bff;color:#fff;padding:6px 12px;border:none;border-radius:6px;cursor:pointer;transition:background-color .3s,box-shadow .3s}.quiz-button:hover{background-color:#0056b3;box-shadow:0 4px 10px #0000001a}.selected-file{margin-top:20px;display:flex;flex-direction:column}.video-card{border:1px solid 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.3s}.watch-video-button:hover,.btn:hover{background-color:#c82333;box-shadow:0 4px 12px #0003}@media (max-width: 1024px){.course-cover-image{width:120px}.course-header,.video-card-horizontal{flex-direction:column;align-items:flex-start}.video-thumbnail-horizontal{margin-bottom:10px}.add-video-button,.button-container button,.watch-video-button,.btn{width:100%}}@media (max-width: 600px){.course-header h1{font-size:1.8rem}.update-course-container{padding:15px}}.quiz-container{width:80%;max-width:900px;border:2px solid black;margin:100px auto;height:auto;min-height:80vh;padding:30px;border-radius:20px;background-color:#e0f7fa;box-shadow:0 4px 8px #0000001a}.quiz-slider{border:2px solid saddlebrown;padding:10px;background-color:#f0f0f0;border-radius:10px;margin-bottom:15px}.quiz-name{font-size:1.2rem;border:1px solid black;padding:10px;border-radius:10px;text-align:center;background-color:#fff;box-shadow:0 2px 4px #0000001a}.button-save{display:flex;justify-content:center;align-items:center;padding:10px 20px;border-radius:5px;color:#fff;cursor:pointer;transition:background-color .3s,transform .2s}.display-score{padding:30px;background-color:#f3f4f6;border-radius:12px;box-shadow:0 2px 10px #0000001a;max-width:80%;margin:0 auto}.display-score h1{font-size:2em;color:#333;text-align:center;margin-bottom:20px}.correctSelct{padding:20px;background-color:#e5ffe5;border-radius:10px;box-shadow:0 2px 8px #0000001a;margin-top:20px}.correctSelct h1{font-size:1.8em;color:#28a745;border-bottom:2px solid #28a745;padding-bottom:5px;margin-bottom:15px}.wrongSelected{padding:20px;background-color:#ffe5e5;border-radius:10px;box-shadow:0 2px 8px #0000001a;margin-top:20px}.wrongSelected h1{font-size:1.8em;color:#dc3545;border-bottom:2px solid #dc3545;padding-bottom:5px;margin-bottom:15px}.answer-card{background-color:#fff;padding:15px;border-radius:8px;border-left:5px solid;margin-bottom:15px;box-shadow:0 2px 6px #0000001a;transition:transform .2s ease}.answer-card.correct{border-color:#28a745}.answer-card.incorrect{border-color:#dc3545}.answer-card:hover{transform:scale(1.03);box-shadow:0 4px 12px #00000026}.question-text{font-size:1.2em;font-weight:700;color:#333;margin-bottom:10px}.answer-details{display:flex;flex-direction:column;gap:8px}.your-answer,.correct-answer{font-size:1em;color:#555;padding:8px;border-radius:5px;transition:background-color .2s ease}.your-answer{background-color:#fcc}.correct-answer{background-color:#cfc;border:1px solid #28a745;font-weight:700;box-shadow:0 1px 3px #0000001a}.label{font-weight:700;color:#dc3545}.correct-answer .label{color:#28a745}.tech{height:auto;width:90%;max-width:800px;margin:0 auto}.show-tut{display:flex;margin:0;gap:10px;padding:10px;background:#071524;min-height:45rem}.video-tut{width:990px;height:500px}.data-content{margin:10px;border:1px solid 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