:root{color-scheme:light;font-family:Helvetica Neue,Arial,sans-serif;background-color:#f4f4f8;color:#1f2933}body{margin:0;min-height:100vh}a{color:#2563eb;text-decoration:none}a:hover{text-decoration:underline}.main-layout{min-height:100vh;display:flex;flex-direction:column}.navbar{background:#111827;color:#fff;padding:1rem 1.5rem;display:flex;justify-content:space-between;align-items:center}.navbar a{color:#fff;margin-left:1rem}.content{flex:1;padding:2rem}.card{background:#fff;padding:2rem;border-radius:12px;box-shadow:0 10px 25px #0f172a1a;max-width:720px;margin:0 auto}button{background:#2563eb;color:#fff;border:none;padding:.75rem 1.5rem;border-radius:8px;font-size:1rem;cursor:pointer;transition:background .2s ease-in-out}button:hover{background:#1d4ed8}button:disabled{opacity:.6;cursor:not-allowed}input[type=text],input[type=password],input[type=url],textarea{width:100%;padding:.75rem;border:1px solid #d2d6dc;border-radius:8px;font-size:1rem;margin-top:.4rem;box-sizing:border-box}label{display:block;font-weight:600;margin-top:1rem}.error-text{color:#b91c1c;margin-top:.5rem}.success-text{color:#059669;margin-top:.5rem}.video-player{width:100%;border-radius:12px;background:#000}.video-card{display:grid;gap:1rem}.table{width:100%;border-collapse:collapse;margin-top:1rem}.table th,.table td{text-align:left;padding:.75rem;border-bottom:1px solid #e5e7eb}.table th{background:#f9fafb}.delete-button{background:#dc2626}.delete-button:hover{background:#b91c1c}.logout-button{background:#6b7280}.logout-button:hover{background:#4b5563}.upload-dropzone{border:2px dashed #94a3b8;border-radius:12px;padding:3rem 1.5rem;text-align:center;color:#475569;transition:background .2s ease-in-out,border-color .2s;margin-top:1.5rem}.upload-dropzone.dragging{background:#2563eb14;border-color:#2563eb}.url-box{background:#f1f5f9;padding:.75rem 1rem;border-radius:8px;margin-top:1rem;font-family:SFMono-Regular,Consolas,Liberation Mono,Menlo,Courier,monospace;word-break:break-all}.video-wrapper{display:flex;justify-content:center}.video-meta{margin-top:1.5rem;text-align:center}.alert{padding:.75rem 1rem;border-radius:8px;margin-top:1rem}.alert.error{background:#fee2e2;color:#b91c1c}.alert.info{background:#e0f2fe;color:#0369a1}