* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    background: white;
    border-radius: 15px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

h1 {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-align: center;
    padding: 30px;
    font-size: 2.5rem;
    font-weight: 300;
    letter-spacing: 2px;
}

.task-form {
    padding: 30px;
    display: flex;
    gap: 15px;
    background: #f8f9fa;
    border-bottom: 1px solid #e9ecef;
}

.task-input {
    flex: 1;
    padding: 15px 20px;
    border: 2px solid #e9ecef;
    border-radius: 10px;
    font-size: 16px;
    transition: all 0.3s ease;
}

.task-input:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.priority-select {
    padding: 15px 20px;
    border: 2px solid #e9ecef;
    border-radius: 10px;
    font-size: 16px;
    background: white;
    cursor: pointer;
}

.add-btn {
    padding: 15px 30px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s ease;
}

.add-btn:hover {
    transform: translateY(-2px);
}

.message-alert {
    margin: 20px 30px;
    padding: 15px 20px;
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
    border-radius: 8px;
    font-weight: 500;
}

.tasks-container {
    padding: 20px 30px 30px;
}

.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: #6c757d;
    font-size: 18px;
}

.task-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    margin-bottom: 15px;
    background: white;
    border: 1px solid #e9ecef;
    border-radius: 12px;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.task-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.task-content {
    display: flex;
    align-items: center;
    gap: 20px;
    flex: 1;
}

.task-title {
    font-size: 18px;
    font-weight: 500;
    color: #2c3e50;
}

.task-priority {
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.priority-low {
    background: #d4edda;
    color: #155724;
}

.priority-high {
    background: #fff3cd;
    color: #856404;
}

.priority-urgent {
    background: #f8d7da;
    color: #721c24;
}

.task-actions {
    display: flex;
    gap: 10px;
}

.action-btn {
    width: 40px;
    height: 40px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    font-size: 14px;
}

.edit-btn {
    background: #28a745;
    color: white;
}

.edit-btn:hover {
    background: #218838;
    transform: scale(1.1);
}

.delete-btn {
    background: #dc3545;
    color: white;
}

.delete-btn:hover {
    background: #c82333;
    transform: scale(1.1);
}

.edit-dropdown {
    display: flex;
    gap: 10px;
    align-items: center;
    margin-top: 10px;
    padding: 10px;
    background: #f8f9fa;
    border-radius: 8px;
    border: 1px solid #e9ecef;
}

.priority-edit-select {
    padding: 8px 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
    background: white;
    cursor: pointer;
}

.save-btn {
    padding: 8px 16px;
    background: #28a745;
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 14px;
    cursor: pointer;
    transition: background 0.2s ease;
}

.save-btn:hover {
    background: #218838;
}

.cancel-btn {
    padding: 8px 16px;
    background: #6c757d;
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 14px;
    cursor: pointer;
    transition: background 0.2s ease;
}

.cancel-btn:hover {
    background: #5a6268;
}

.task-content {
    flex-direction: column;
    align-items: flex-start;
}

@media (max-width: 768px) {
    .task-form {
        flex-direction: column;
    }
    
    .task-item {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
    
    .task-content {
        flex-direction: column;
        gap: 10px;
    }
}